[User]
I'd like to create a customizable door wedge with some text inlayed on the angled face. I'd like to be able to adjust the height, length, and depth of the wedge, as well as the text itself and the size of that text.

Specifically, the wedge should be a triangular prism shape, and I want the text to be centered on the angled face. The text should be slightly recessed into the wedge.

I'd also like the edges to be slightly rounded.

Could you write the OpenSCAD code for this? I'm not using any specific libraries, so I expect all code to be written from scratch. Thanks!

[Assistant]
door_wedge.scad:
```
/*door wedge with text
20181004 P. de Graaff
*/

//height in mm
height=30;
//length in mm
length=130;
//depth in mm
depth=50;

fontsize=18;

Text="don't close";

b=sqrt(height*height+length*length);
echo(b);

//Winkel berechnen
gamma=90-acos(height/b);
echo(gamma);

difference(){
    minkowski(){
        difference(){
            cube([length,depth,height]);
            translate([0,0,height])rotate([0,gamma,0])cube([length+10,depth+10,50]);
        }
        sphere(0.5);
    }
    #translate([0,depth/2,height-2])rotate([0,gamma,0])translate([b/2,0,0])
    color("Green")linear_extrude(height = 2.5,convexity=10)
    text(Text, size = fontsize, font ="Arial",valign="center",halign="center", $fn = 100);
}

```


[User]
I'd like to create a customizable fidget spinner using OpenSCAD. The design will have a central bearing and several outer bearings arranged in a circle around it, connected by arms.

Here's what I envision for the parameters:

*   **`$fn`**: This controls the smoothness of the curves. I'd like this to be easily adjustable.
*   **`Tolerance`**: This value will adjust the size of the bearing holes. I need a way to tweak this because sometimes my bearings fit too tightly or too loosely.
*   **`BearingAmount`**: This determines how many outer bearings the spinner has.
*   **`ArmLength`**:  This sets the length of the connecting arms.
*  **`ArmThickness`**: This defines how thick the arms are.
*   **`LengthBetweenArms`**: This parameter sets the spacing between the two arms connected to each bearing.
*   **`BearingHeight`**:  This is the height of the bearings.
*   **`BearingRadius`**: This is the radius of the bearings.
*   **`HolderThickness`**: This is the thickness of the material around the bearing holes.

The design should have a central cylindrical bearing hole and then for each bearing it should have:

1. A cylindrical hole to hold each of the bearings.
2. Two arms extending outwards from the main center bearing, connecting to the bearing holder at the end.
3. A small gap to ensure that the outer bearings don't merge with the arms, or with each other.
4. The arms should be connected using a small cube to the bearing holder cylinder.

I'd like the code to be parametric so I can easily change these variables and test different designs. Could you generate the OpenSCAD file for me? I'm not using any libraries currently and I'd like to keep the design simple without needing any.

[Assistant]
Spinner.scad:
```
// The quality of the rings
$fn = 150;
// The tolerance of the bearing size (make it higher if the bearings don't fit and lower if they fall out) (default = 0.3)
Tolerance = 0.3;
// How many bearings you want to have around the inner bearing
BearingAmount = 8;
// How long you want the arms to be
ArmLength = 34; //[100]
// How thick you want the arms to be
ArmThickness = 2; //[5]
// How much space should there be between arms
LengthBetweenArms = 4; //[24]
// The height of your bearings
BearingHeight = 7 + Tolerance;
// The radius of your bearings
BearingRadius = 11 + Tolerance/2;
// The thickness of the walls around the bearing
HolderThickness = 3; // [15]

difference() {
    cylinder(BearingHeight, r = BearingRadius+HolderThickness, true);
    translate([0, 0, -0.001])
    cylinder(BearingHeight+0.002, r = BearingRadius, true);
}
difference() {
for (i = [1: BearingAmount]) {
        rotate([0, 0, (360/BearingAmount) * i]) {
            translate([ArmLength, 0, 0]) {
                difference() {
                    cylinder(BearingHeight, r = BearingRadius+HolderThickness, true);
                    translate([0, 0, -0.001])
                    cylinder(BearingHeight+0.002, r = BearingRadius, true);
                }
            }
        difference() {
            translate([0, -(ArmThickness/2), 0]) {
                    translate([0, LengthBetweenArms/2])
                    cube([ArmLength, ArmThickness, BearingHeight]);
                    translate([0, -LengthBetweenArms/2])
                    cube([ArmLength, ArmThickness, BearingHeight]);
            }
            translate([ArmLength, 0, -0.001])
                cylinder(BearingHeight+0.002, r = BearingRadius, true);
        }
    }
}
    translate([0, 0, -0.001])
    cylinder(BearingHeight+0.002, r = BearingRadius, true);
}
```


[User]
I'd like to design a customizable, printable filament spool. It should be modular, with a core, arms connecting the core to the edges, and then the circular edges that form the sides of the spool. I've seen some designs on Thingiverse that are close, but I'd like more control over the different parts and their connections.

Here are the basic parameters I'd like to be able to control:

*   **General:**
    *   `part`:  I want to be able to select which part(s) are generated (e.g., "core", "arm", "edge", "setOfArms", "setOfEdges", "spool" (complete), "explodedSpool").
    *   `spoolHeight`: The total height of the assembled spool.
    *   `innerRadius`: The inner radius of the spool's central hole.
    *   `outerCoreRadius`: The outer radius of the core section.
    *   `outerEdgeRadius`: The outer radius of the entire spool (including the edges).
    *   `gap`:  A gap value for press-fit connections between parts, this should be applied all around mating surfaces but not on top or bottom, and should be applied 50/50 to both the male and female sides of the connection.

*   **Core:**
    *   `wallCutouts`: A boolean to enable or disable wall cut-outs in the core.
    *   `innerSegments`: The number of sides/segments of the inner mounting hole.
    *   `topRecessRadius`: The radius of a recess (counterbore) on the top side of the core.
    *   `topRecessDepth`: The depth of that recess.
    *   `coreHoles`: An option for filament holes in the core. It should have the following options: "all" (holes in corners and middle), "corner" (holes at corners), "cornerTop" (holes at corners on top, bottom cut out), "cornerTop2" (like cornerTop but keeps some material at bottom), and "none" (no holes).
    *   `holeDiameter`: The diameter of the filament holes in the core.
    *   `bridgeLength`: The maximum bridge length for the wall cut-outs.

*   **Arms:**
    *   `armThickness`: The thickness of the arms.
    *   `armWidth`: The width of the arms.
    *   `dovetailChamfer`: A chamfer size on the bottom of the dovetail connections, it should also affect the chamfers on the edges.

*   **Edges:**
    *   `edgeThickness`: The thickness of the edges.
    *   `edgeWidth`:  The width of the edges (the difference between their inner and outer radii).
    *   `edgeHoles`: The number of filament holes in each edge.
    *   `edgeHoleDiameter`:  The diameter of the filament holes in the edges.
    *    `largeEdgeHoles`: An option for larger filament holes on the surfaces of the edges, options should include "both" (larger holes on both sides), "single" (larger hole on one side only), "none" (no larger holes).
    *   `outerEdgeHoleDiameter`: The diameter of the larger filament holes on the surface of the edges.
    *   `lengthyEdgeHoles`: A factor to make the filament holes elliptical rather than circular, with 1 being a circle.

*   **Colors:**
    *   `coreColor`: Color of the core (display only).
    *   `armColor`: Color of the arms (display only).
    *   `edgeColor`: Color of the edges (display only).

I'm hoping for a design that uses dovetail joints for connections between the core/arms and arms/edges. The parts should press-fit together if the gap parameter is set correctly, so I would like the code to calculate the dovetail dimensions and use a gap offset as appropriate. I think that's about it for now.

Oh, and I'd like the code to define a `dovetail()` module, a `ringSector()` module, and a `pieSlice()` module for use in generating the shapes. It should also include a `cutoutBody()` module, a `edgeChamferPrism()` module, and a `edgeChamfers()` module.

I don't have any specific requests for additional libraries at this time.

[Assistant]
spool.scad:
```
//
// Cutomizable Printable Spool
//
// Initial version: V1.0 by Physicator, Oct/2018
//
// Licensed under the Creative Commons - Attribution - Non-Commercial license.
//
// Note: this design does not work properly in Makerbot's Customizer on Thingiverse. Use the integrated customizer in OpenSCAD instead (tested with version 2018.09.05).
//
// This is a remix of thing #7980 by MakeALot: https://www.thingiverse.com/thing:7980
// A related thing with variable width is #102270 by ksaathoff: https://www.thingiverse.com/thing:102270
//
// This design uses a very similar geometry but offers several cutomizable options and additional features.
//
//
// General naming conventions:
// "core" is the center part of the spool, may also be called "drum center".
// "arm" is a connecting piece between the core and an "edge".
// "edge" is one segment of the circular wall, defining the spool's outer diameter.
// "dovetail" is the structure element for connecting different parts. It is a triangular prism with chamfers.
// "top" and "bottom" refer to positive / negative z-directions, respectively, parallel to the spool axis.
//
// Parameters:
// Note: parameters are NOT fool-proof, so reasonable values must be chosen!
//

/* [General] */

// Select part to be generated. Usually you should only need "core" (1x), "setOfArms" (2x), and "setOfEdges" (2x).
part = "spool"; // [core:Core, arm:Arm, edge:Edge, setOfArms:Set of 8 Arms, setOfEdges:Set of 8 Edges, spool:Complete Spool, explodedSpool:Exploded View]

// Total height of spool. All dimensions in mm!
spoolHeight = 45; // [20:0.5:120]

// Inner radius of spool (circumcircle of inner mounting hole).
innerRadius = 18; // [10:0.2:40]

// Outer radius of core (circumcircle). Also affects dimensions of some elements of arms.
outerCoreRadius = 40; // [15:0.5:100]

// Outer radius of spool. Also affects dimensions of some elements of arms.
outerEdgeRadius = 85; // [30:0.5:170]

// Gap size between mounting structures (increase for easier fit, decrease for tighter fit).
gap = 0.2; // [0:0.02:0.5]
/* Gaps are applied on all sides (but not top and bottom) of mounts; and 50/50 to both 'male' and 'female' structures. */

/* [Core] */

// Set this to "true" for enabling wall cut-outs.
wallCutouts = "true"; // [true, false]

// Number of edges of inner hole. Lower numbers may prevent uncontrolled spool rotation during print (acts like a brake).
innerSegments = 8; // [4:1:60]

// Radius of recess (counterbore) on one side of the core with larger diameter than innerRadius.
topRecessRadius = 30; // [10:0.2:80]

// Depth of recess (counterbore).
topRecessDepth = 0; // [0:0.2:25]

/* Option for filament holes in the spool core. The more holes are involved the more additional space is needed such that wall cut-outs will be smaller (if enabled).
    // all: holes at top and bottom in the middle of edges and at corners
    // corner: holes at top and bottom at corners.
    // cornerTop: holes at top at corners; bottom is cou out as far as possible.
    // cornerTop2: like cornerTop but keeps some material at bottom just above
    //      dovetail cut-outs for sturdier arm mounts.
    // none: no holes at all in the core. Otherwise same as cornerTop2.*/
// Option for filament holes in the spool core. The more holes are involved the more additional space is needed such that wall cut-outs will be smaller (if enabled).
coreHoles = "cornerTop2"; // [all, corner, cornerTop, cornerTop2, none]

// Diameter of holes in core for filament.
holeDiameter = 2.2; // [0:0.1:8]

// Maximum bridge length. This is the maximum length of the top roof of wall cut-outs in the core. Decrease this value if your printer doesn't like bridges, set to zero for no bridge ('pitched roof'). Only relevant if wall cutouts are enabled.
bridgeLength = 10; // [0:0.5:50]

/* [Arms] */

// Thickness of arms. Also affects dimensions of some elements of the core.
armThickness = 4; // [1:0.2:10]

// Width of arms.
armWidth = 4; // [1:0.2:15]

// Chamfer size on bottom plane of dovetail for easier assembly. Also affects chamfers on dovetails of edge elements.
dovetailChamfer = 0.4; // [0:0.1:1]

/* [Edges] */

// Thickness of edges. Should not be larger than armThickness. Also affects dimensions of some elements of the core.
edgeThickness = 3; // [1:0.2:10]

// Edge width, i.e. difference between outer and inner radius of edges. Also affects dimensions of some elements of arms.
edgeWidth = 8; // [3:0.2:30]

// Number of holes in each edge.
edgeHoles = 2; // [0:1:5]

// Diameter of filament holes through edges.
edgeHoleDiameter = 2.4; // [0:0.1:8]

// Option for applying a larger hole diameter at the surface of edges for easier filament insertion. May be restricted to one side of the edges for easier printing.
largeEdgeHoles = "both"; // [both, single, none]

// Diameter of filament holes at the surface of edges. Make this larger than edgeHoleDiameter for easier filament insertion.
outerEdgeHoleDiameter = 5; // [0:0.1:16]

// Elliptical instead of circular holes in the edges for easier filament insertion. The hole diameter along edge direction is multiplied by this factor. Use 1 for circular holes.
lengthyEdgeHoles = 3; // [1:0.1:6]

/* [Colors] */

// Color appearance of core, just for display. Does not affect .stl file. For valid color names see: https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/The_OpenSCAD_Language#color
coreColor = "Gold";

// Color appearance of arms, just for display.
armColor = "Red";

// Color appearance of edges, just for display.
edgeColor = "DarkGreen";

/* [Hidden] */

// Derived parameters (better do not change):
triGap = gap * sqrt(3); // half of side length change of dovetail triangles due to gap
centerDist = outerCoreRadius * cos(22.5); // distance between origin and the middle of one edge of core polygon. Equivalent to distance of arm from origin (without mounting structures).
dtWidthEdges = edgeWidth * 9 / 16; // side length of dovetail mounts for edges.
sectorAngle = asin(edgeWidth / 2 / (outerEdgeRadius - edgeWidth / 2)); // half-angle of ring sector at the end of arms for connection to edges.
coreEdgeLength = 2 * outerCoreRadius * sin(22.5); // length of outer straight edge of core.
dovetailWidth = coreEdgeLength/2; // Length of dovetail mounting structures between core and arms. Also affects dimensions of some elements of the core.

// 2D shape of a circular sector.
// Taken from module donutSlice() from 2Dshapes.scad in the MCAD directory.
module pieSlice(size, start_angle, end_angle) //size in radius(es)
{
    rx = ((len(size) > 1)? size[0] : size);
    ry = ((len(size) > 1)? size[1] : size);
    trx = rx* sqrt(2) + 1;
    try = ry* sqrt(2) + 1;
    a0 = (4 * start_angle + 0 * end_angle) / 4;
    a1 = (3 * start_angle + 1 * end_angle) / 4;
    a2 = (2 * start_angle + 2 * end_angle) / 4;
    a3 = (1 * start_angle + 3 * end_angle) / 4;
    a4 = (0 * start_angle + 4 * end_angle) / 4;
    if(end_angle > start_angle)
        intersection() {
		if(len(size) > 1)
        	ellipse(rx*2,ry*2);
		else
			circle(r = rx, $fn = 120);
        polygon([
            [0,0],
            [trx * cos(a0), try * sin(a0)],
            [trx * cos(a1), try * sin(a1)],
            [trx * cos(a2), try * sin(a2)],
            [trx * cos(a3), try * sin(a3)],
            [trx * cos(a4), try * sin(a4)],
            [0,0]
       ]);
    }
}

// Arc of a cylindrical ring with rectangular cross section.
// Adapted from module donutSlice() from 2Dshapes.scad in the MCAD directory.
module ringSector(innerSize, outerSize, startAngle, endAngle, height)
{
    linear_extrude(height = height, center = false, convexity = 6)
        difference()
        {
            pieSlice(outerSize, startAngle, endAngle);
            circle(innerSize, $fn = 120);
        }
}

// Dovetail mounting geometry (triangular prism with chamfers).
// h = height, l = length, c = chamfer size.
module dovetail(h, l, c) {
    d = l * sqrt(3) / 2; // l along x-direction
    if(c > 0)
        polyhedron(
            points = [[2*c,0,0],[d-c,-l/2+c*sqrt(3),0],[d-c,l/2-c*sqrt(3),0], // bottom triangle
                        [0,0,c],[d,-l/2,c],[d,l/2,c], // triangle on bottom chamfer plane
                        [0,0,h-c],[d,-l/2,h-c],[d,l/2,h-c], // triangle on top chamfer plane
                        [2*c,0,h],[d-c,-l/2+c*sqrt(3),h],[d-c,l/2-c*sqrt(3),h]], // top triangle
            faces = [[0,1,2],[3,4,1,0],[4,5,2,1],[5,3,0,2], // bottom with chamfers
                        [6,7,4,3],[7,8,5,4],[8,6,3,5], // sides
                        [9,10,7,6],[10,11,8,7],[11,9,6,8],[11,10,9]]); // top with chamfers
    else
        polyhedron(
            points = [[0,0,0], [d,-l/2,0], [d,l/2,0], // bottom triangle
                    [0,0,h], [d,-l/2,h], [d,l/2,h]], // top triangle
            faces = [[0,1,2],[3,5,4],[0,3,4,1],[1,4,5,2],[2,5,3,0]]);
}

// Polyhedron for wall cut-outs (if enabled).
// This is a geometry similar to a pyramid.
// l = length, w = width, h = height (prior to rotation!).
// b = bridge length (see also parameter bridgeLength).
module cutoutBody(l, w, h, b) {
    d = (b < w) ? (w - b) / 2 : 0; // distance between outer and inner edges
    translate([h+0.1,0,l/2])
        rotate([0,-90,0])
            polyhedron(
                points = [[-l/2,-w/2,0],[-l/2,w/2,0],[l/2-d,-w/2,0],[l/2-d,w/2,0],[l/2,-w/2+d,0],[l/2,w/2-d,0], // base polygon
                    [-l/2,0,h],[l/2,0,h]], // top points
                faces = [[0,2,4,5,3,1],[0,6,7,2],[3,7,6,1],[0,1,6],[2,7,4],[5,7,3],[4,7,5]]);
}

// Inner part (core) of spool.
module core() {
    // Margin on top and bottom to allow for sufficient space for center holes:
    topBottomMargin = coreHoles == "all" ? max(edgeThickness, armThickness) : edgeThickness;
    // Calculation of height of filament holes on top side:
    filHoleHeight = topRecessDepth > topBottomMargin + 1.5 * holeDiameter ?
        spoolHeight - topBottomMargin - holeDiameter :
        spoolHeight - max(topRecessDepth + holeDiameter, topBottomMargin + holeDiameter);
    // z-position of lower edge of wall cut-outs:
    cutoutBottom = coreHoles == "cornerTop" ? (topBottomMargin) : (
        (coreHoles == "cornerTop2") || (coreHoles == "none") ? (
            topBottomMargin * 1.5) : (topBottomMargin + 2 * holeDiameter));
    // Height of wall cut-outs:
    cutoutHeight = coreHoles == "all" ? (
        min(filHoleHeight - holeDiameter, spoolHeight - topRecessDepth - topBottomMargin / 2) - cutoutBottom) : (
            spoolHeight - max(topBottomMargin * 1.5, topRecessDepth + topBottomMargin / 2) - cutoutBottom);
    // Width of wall cut-outs, determining the radial wall thickness:
    cutoutWidth = coreEdgeLength - 1 - sqrt(armThickness * edgeThickness) * (1 + (spoolHeight / outerCoreRadius) / 4); // weakly scales with a few other parameters, just to keep dimensions somewhhat consistent.

	difference() {
        // inner part:
        rotate([0,0,22.5])
            cylinder(h = spoolHeight, r = outerCoreRadius, $fn=8);
        translate([0,0,-0.1])
            cylinder(h = spoolHeight+0.2, r = innerRadius, $fn = innerSegments);
		if (topRecessDepth > 0)
            translate([0,0,spoolHeight-topRecessDepth])
                cylinder(h = topRecessDepth + .1, r = topRecessRadius, $fn = 64);
        // dovetail cut-outs:
		for (i=[0:7]) {
			rotate([0,0,i*45])
                translate([-centerDist-dovetailWidth/2-gap,0,-0.1])
                    dovetail(edgeThickness + .2, dovetailWidth + triGap, 0);
			rotate([0,0,i*45])
                translate([-centerDist-dovetailWidth/2-gap,0,spoolHeight - edgeThickness])
                    dovetail(edgeThickness + .1, dovetailWidth + triGap, 0);
		}
		// filament holes:
		for (i=[0:3]) {
            // top at corners:
			if (coreHoles != "none")
                rotate([90,0,i*45+22.5])
                    translate([0,filHoleHeight,-outerCoreRadius*1.5])
                        cylinder(h = outerCoreRadius * 3, r = holeDiameter/2, $fn = 12);
            // top in the middle of straight sections:
            if (coreHoles == "all")
                rotate([90,0,i*45])
                    translate([0,filHoleHeight,-outerCoreRadius*1.5])
                        cylinder(h = outerCoreRadius * 3, r = holeDiameter/2, $fn = 12);
            // bottom:
            if ((coreHoles == "all") || (coreHoles == "corner"))
                rotate([90,0,i*45+22.5])
                    translate([0,edgeThickness+holeDiameter,-outerCoreRadius*1.5])
                        cylinder(h = outerCoreRadius * 3, r = holeDiameter/2, $fn = 12);
            if (coreHoles == "all")
                rotate([90,0,i*45])
                    translate([0,edgeThickness+holeDiameter,-outerCoreRadius*1.5])
                        cylinder(h = outerCoreRadius * 3, r = holeDiameter/2, $fn = 12);
        }
        // wall cut-outs (if enabled):
        if (wallCutouts == "true")
            for (i=[0:7]) {
                rotate([0,0,i*45])
                    translate([0,0,cutoutBottom])
                        cutoutBody(cutoutHeight, cutoutWidth, centerDist + 0.1, bridgeLength);
            }
	}
}

// A single arm connecting the core and two edges.
module arm() {
    armLength = outerEdgeRadius - centerDist - edgeWidth; // length of arms (without dovetail mounts)

    difference() {
        // main arm body and dovetail mount at core side:
        union() {
            // arm bar:
            // In the case of a very large arm width we need to cut out material for avoiding conflicts with edges:
            difference() {
                translate([dovetailWidth/4-0.1,-armWidth/2,0])
                    cube([armLength-dovetailWidth/4+0.2,armWidth,armThickness]);
                translate([-centerDist,0,-0.1]) {
                    ringSector(outerEdgeRadius - edgeWidth - gap, outerEdgeRadius, sectorAngle, sectorAngle + 22.5, armThickness + 0.2);
                    ringSector(outerEdgeRadius - edgeWidth - gap, outerEdgeRadius, -sectorAngle - 22.5, -sectorAngle, armThickness + 0.2);
                }
            }
            // dovetail mount on core side:
            difference() {
                translate([dovetailWidth/2-gap,0,0.001])
                    rotate([0,0,180])
                        dovetail(edgeThickness - 0.002, dovetailWidth - triGap, dovetailChamfer);
                translate([gap+dovetailChamfer+0.1,-dovetailWidth/2-0.1,-0.1])
                    cube([dovetailWidth/2+0.2,dovetailWidth+0.2,edgeThickness+0.2]);
            }
            // counter-bar of dovetail mount on core side, with chamfers:
            translate ([gap/2,0,0])
                rotate([-90,0,0])
                    linear_extrude(height = dovetailWidth, center = true, convexity = 4)
                        polygon(
                            points = [[dovetailChamfer,0],[0,-dovetailChamfer], // upper chamfer
                                [0,-armThickness+dovetailChamfer],[dovetailChamfer,-armThickness], // lower chamfer
                                [dovetailWidth/4,-armThickness],[dovetailWidth/4,0]], // side without chamfers
                            paths = [[0,1,2,3,4,5]], convexity = 4);
            // edge connection body:
            translate([-centerDist,0,0])
                ringSector(outerEdgeRadius - edgeWidth, outerEdgeRadius, -sectorAngle, sectorAngle, armThickness);
        }
        // dovetail cut-outs for mounts of edges:
        translate([-centerDist,0,-0.1]) {
            rotate([0,0,-sectorAngle*0.55])
                translate([outerEdgeRadius-edgeWidth/2,-dtWidthEdges*sqrt(3)/2-gap,0])
                    rotate([0,0,90])
                        dovetail(edgeThickness + 0.101, dtWidthEdges + triGap, 0);
            rotate([0,0,sectorAngle*0.55])
                translate([outerEdgeRadius-edgeWidth/2,dtWidthEdges*sqrt(3)/2+gap,0])
                    rotate([0,0,-90])
                        dovetail(edgeThickness + 0.101, dtWidthEdges + triGap, 0);
        }
    }
}

// All 16 arms, readily positioned around core.
module arms() {
	for (i=[0:7]) {
        rotate([0,0,i*45])
        {
            // arms in lower plane:
            translate([centerDist,0,0])
                arm();
            // arms in upper plane:
            translate([centerDist,0,spoolHeight])
                rotate([180,0,0])
                    arm();
        }
    }
}

// Chamfer geometry for edges (single triangular prism).
module edgeChamferPrism(c, w) {
    polyhedron(
        points = [[-w,0,0],[-w,c,0],[0,c,0],[0,0,0], // top points
            [0,0,-c], [-w,0,-c]], // bottom points
        faces = [[0,1,2,3],[5,4,2,1],[3,4,5,0],[5,1,0],[4,3,2]]);
}

// Two edge chamfer geometries. Need to be rotated and cut out from edges.
module edgeChamfers() {
    // top chamfer:
    translate([outerEdgeRadius+0.1,-0.1,edgeThickness+0.1])
        edgeChamferPrism(dovetailChamfer + 0.2, edgeWidth + 0.2);
    // bottom chamfer:
    translate([outerEdgeRadius+0.1,-0.1,-0.1])
        rotate([90,0,0])
            edgeChamferPrism(dovetailChamfer + 0.2, edgeWidth + 0.2);
}

// A single edge segment.
module edge() {
    // angle of gap opening between arm and edge:
    gapAngle = 2 * asin(gap / 2 / (outerEdgeRadius - edgeWidth / 2));
    // angle between two holes (measured from center of core):
    holeAngle = (edgeHoles <= 1) ? 0 : ((45 - 2 * sectorAngle) / edgeHoles);
    // z-distance between surface of edge and end of larger holes:
    largeHoleZ = largeEdgeHoles == "both" ? edgeThickness * 3 / 8 : (
        largeEdgeHoles == "single" ? edgeThickness * 3 / 4 : 0);
    // radius of circle on which the center points of holes are aligned:
    holeCircleRad = edgeWidth > 2 * max(edgeHoleDiameter, outerEdgeHoleDiameter) ?
        outerEdgeRadius - max(edgeHoleDiameter, outerEdgeHoleDiameter) :
        outerEdgeRadius - edgeWidth / 2;
	difference() {
        union() {
            difference() {
                // main body of edge segment:
                ringSector(outerEdgeRadius - edgeWidth, outerEdgeRadius, sectorAngle + gapAngle, 45 - sectorAngle - gapAngle, edgeThickness);
                // chamfers:
                rotate([0,0,sectorAngle])
                    edgeChamfers();
                rotate([0,0,45-sectorAngle])
                    mirror([0,1,0])
                        edgeChamfers();
            }
            // dovetail mounts:
            rotate([0,0,sectorAngle*0.55])
                translate([outerEdgeRadius-edgeWidth/2,dtWidthEdges*sqrt(3)/2-gap,0.001])
                    rotate([0,0,-90])
                        dovetail(edgeThickness - 0.002, dtWidthEdges - triGap, dovetailChamfer);
            rotate([0,0,45-sectorAngle*0.55])
                translate([outerEdgeRadius-edgeWidth/2,-dtWidthEdges*sqrt(3)/2+gap,0.001])
                    rotate([0,0,90])
                        dovetail(edgeThickness - 0.002, dtWidthEdges - triGap, dovetailChamfer);
        }
        // Filament holes:
        if (edgeHoles > 0) {
            for (i=[0:(edgeHoles-1)]) {
                rotate([0,0,22.5+(i-(edgeHoles-1)/2)*holeAngle]) {
                    if (largeEdgeHoles == "both") {
                        translate([holeCircleRad,0,edgeThickness-largeHoleZ])
                            scale([1,lengthyEdgeHoles,1])
                                cylinder(h = largeHoleZ + 0.1, r1 = edgeHoleDiameter / 2,
                                    r2 = outerEdgeHoleDiameter / 2, $fn = 24);
                    }
                    if ((largeEdgeHoles == "single") || (largeEdgeHoles == "both")) {
                        translate([holeCircleRad,0,-0.1])
                            scale([1,lengthyEdgeHoles,1])
                                cylinder(h = largeHoleZ + 0.1, r1 = outerEdgeHoleDiameter / 2,
                                    r2 = edgeHoleDiameter / 2, $fn = 24);
                    }
                    translate([holeCircleRad,0,-0.1])
                        scale([1,lengthyEdgeHoles,1])
                            cylinder(h = edgeThickness + 0.2, r = edgeHoleDiameter / 2, $fn = 18);
                }
            }
        }
    }
}

// All 16 edges, readily positioned around arms and core.
module edges() {
    for (i=[0:7]) {
        rotate([0,0,i*45])
            edge();
        rotate([0,0,i*45])
            translate([0,0,spoolHeight])
                rotate([0,180,0])
                    edge();
    }
}

// Complete spool (in final arrangment of parts).
module spool() {
    color(coreColor)
        core();
    color(armColor)
        arms();
    color(edgeColor)
        edges();
}

// Exploded view of spool.
module explodedSpool() {
    armDelta = centerDist+dovetailWidth*0.7; // translation distance of arms
    edgeDelta = armDelta - centerDist + edgeWidth; // translation distance of edges
    // Core:
    color(coreColor)
        core();
    // Arms:
    for (i=[0:7]) {
        rotate([0,0,i*45])
        {
            // arms in lower plane:
            translate([armDelta,0,0])
                color(armColor)
                    arm();
            // arms in upper plane:
            translate([armDelta,0,spoolHeight])
                rotate([180,0,0])
                    color(armColor)
                        arm();
        }
    }
    // Edges:
    for (i=[0:7]) {
        rotate([0,0,i*45])
            translate([edgeDelta*cos(22.5),edgeDelta*sin(22.5),0])
                color(edgeColor)
                    edge();
        rotate([0,0,(i+0.5)*45])
            translate([-edgeDelta,0,spoolHeight])
                rotate([0,180,22.5])
                    color(edgeColor)
                        edge();
    }
}

// Set of 8 arms ready for 3D printing.
module setOfArms() {
    for (i=[0:7]) {
        translate([(i%2)*dovetailWidth,(i-3.5)*(armWidth+dovetailWidth/2)+1,0])
            arm();
    }
}

// Set of 8 edges ready for 3D printing.
module setOfEdges() {
    for (i=[0:7]) {
        translate([+outerEdgeRadius-(i-3)*(edgeWidth*1.15+1),0,0])
            rotate([0,180,22.5])
                edge();
    }
}

// Selection of part for Customizer.
module makePart() {
	if (part == "core") {
		color(coreColor)
            core();
	} else if (part == "arm") {
		color(armColor)
            arm();
	} else if (part == "edge") {
		color(edgeColor)
            translate ([outerEdgeRadius-edgeWidth,0,0])
                rotate([0,180,22.5])
                    edge();
    } else if (part == "spool") {
        translate([0,0,0.01]) spool();
    } else if (part == "explodedSpool") {
        explodedSpool();
    } else if (part == "setOfArms") {
        color(armColor)
            setOfArms();
    } else if (part == "setOfEdges") {
        color(edgeColor)
            setOfEdges();
	} else {
		cube(50); // select a valid part or you will be punished by the cube of doom!
	}
}

makePart();

//core();
//arm();
//edge();
//spool();
//explodedSpool();
//setOfArms();
//setOfEdges();
```


[User]
I'd like to create a customizable box with inner compartments, and I'm looking for an OpenSCAD design that allows for a lot of flexibility. I really like the approach in the given example file, `customized-box.scad`, but I want a more modular design and more customizability options.

Here are the requirements:

1.  **Overall Box Dimensions:** The box should have parametric width, depth, and height, with parameters called `box_width`, `box_depth`, and `box_height`, respectively.
2.  **Wall Thickness:**  The outer walls and the bottom should have independent thickness parameters, namely, `outer_wall_thickness` and `bottom_thickness`.
3.  **Rounded Corners:**  The outer box should have rounded corners, with a `corner_radius` parameter.
4.  **Angled Top:** The top edge of the box should be angled, cut by a plane, defined with `top_angle`. It's important that the top edge and bottom edge of this angled top be rounded with their own separate radii, `top_cut_radius` and `bottom_cut_radius`, respectively.
5.  **Internal Compartments:** The box should support configurable internal compartments. Instead of using preset layouts, I'd like a more flexible system where the compartments are defined in a list of modules that each take up a percentage of the box's interior space. The user should be able to specify an arbitrary list of modules, with each module defined by a position in percentage (`module_pos_x`, `module_pos_y`) and a size in percentage (`module_size_x`, `module_size_y`). So a list like `modules = [ [ [0, 0], [25, 50] ], ... ]` would define the position and size of each module in percentage of the interior box space.
6.  **Module Wall Thickness:** The walls of each module should have a separate thickness parameter `module_wall_thickness`.
7.  **Modules Should Not Intersect:** There should be logic that prevents the modules from intersecting or overlapping. This is important.
8.  **No Built-in module presets**: The predefined modules in the original example (empty box, 2x2, 3+1, etc) should not be present. I want to define all the compartments.
9.  **Customizable $fn**: The $fn value should be available as a customizable parameter (`resolution`), which should default to 100.
10. **No Libraries** I do not want to use any external libraries. All the code should be included in the file that the assistant produces.

Can you generate the OpenSCAD code for this?

[Assistant]
customized-box.scad:
```
/*
 * Customizable Box - https://www.thingiverse.com/thing:3138285
 * by ASP3D - https://www.thingiverse.com/asp3d/about
 * created 2018-10-05
 * version v1.0
 *
 * Changelog
 * --------------
 * v1.0 - 2018-10-05:
 *  - [new] Initial release
 * --------------
 *
 * This work is licensed under the Creative Commons - Attribution - Non-Commercial ShareAlike license.
 * https://creativecommons.org/licenses/by-nc-sa/3.0/
 */

/* [Box size and params] */

width = 120;
depth = 80;
height = 70;

// Outer walls thickness
wall = 2;
// Bottom shell thickness
bottom = 3;

// Inner modules configiration
modules_select = 4; // [0:Custom (need to download source),1:Empty box,2:2x2,3:3+1,4:3+2,5:2+3+4]
// Inner modules walls thickness
modules_wall = 1;
// Custom modules (when modules_select=0 (Custom))
// Format: modules_custom = [ [[pos_x, pos_y], [size_x, size_y]], ... ];
// All sizes are in percentage
modules_custom = [
    [[0, 0], [25, 50]], [[25, 0], [50, 34]], [[75, 0], [25, 34]],
    [[0, 34], [67, 34]], [[67, 34], [33, 34]],
    [[0, 68], [25, 32]], [[50, 68], [50, 75]]
];

// Smooth corners by this value
corners_radius = 10;

// Make near side lower, use this angle for cut
top_angle = 20; // [0:45]
// Smooth top cut by this value
top_radius = 10;

/* [Hidden] */

modules_list = [

    [],
    [
        [[0, 0], [50, 50]], [[50, 0], [50, 50]],
        [[0, 50], [50, 50]], [[50, 50], [50, 50]]
    ],
    [
        [[0, 0], [100, 50]],
        [[0, 50], [33, 50]], [[33, 50], [34, 50]], [[67, 50], [33, 50]]
    ],
    [
        [[0, 0], [50, 50]], [[50, 0], [50, 50]],
        [[0, 50], [33, 50]], [[33, 50], [34, 50]], [[67, 50], [33, 50]]
    ],
    [
        [[0, 0], [25, 34]], [[25, 0], [25, 34]], [[50, 0], [25, 34]], [[75, 0], [25, 34]],
        [[0, 34], [33, 34]], [[33, 34], [34, 34]], [[67, 34], [33, 34]],
        [[0, 68], [50, 32]], [[50, 68], [50, 32]]
    ]

// [], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], [[], []], ]

];

bottom_radius = 1;

front_height = height - sin(top_angle)*height;

$fn = 100;

intersection() {
    union() {
        box_3d();
        grig_3d();
    }
    cut_3d();
}

module cut_3d() {
    translate([-1, 0, 0])
        rotate([90, 0, 90])
            linear_extrude(width + 2)
                cut_shape();
}

module cut_shape() {
    hull() {
        translate([bottom_radius, bottom_radius - bottom_radius*2, 0])
            circle(bottom_radius);
        translate([depth - bottom_radius, bottom_radius - bottom_radius*2, 0])
            circle(bottom_radius);
        translate([depth - top_radius, height - top_radius, 0])
            circle(top_radius);
        translate([top_radius, front_height - top_radius, 0])
            circle(top_radius);

    }
}

module grig_3d() {
    linear_extrude(height, convexity = 10) {
        if (modules_select == 0) {
            grid_shape(modules_custom);
        } else {
            grid_shape(modules_list[modules_select - 1]);
        }
    }
}

module grid_shape(modules) {
    w = width - wall*2 + modules_wall;
    h = depth - wall*2 + modules_wall;
    intersection() {
        translate([wall, wall, 0])
            union() {
                for (m = [0:len(modules)-1]) {
                    mx = w * modules[m][0][0]/100;
                    my = h * modules[m][0][1]/100;
                    wx = w * modules[m][1][0]/100;
                    wy = h * modules[m][1][1]/100;
                    translate([mx, my, 0])
                        difference() {
                            square([wx, wy]);
                            square([wx - modules_wall, wy - modules_wall]);
                        }
                }
            }
        bottom_shape();
    }
}

module box_3d() {
    linear_extrude(height, convexity = 10)
        difference() {
            bottom_shape();
            offset(delta = -wall)
                bottom_shape();
        }
    linear_extrude(bottom)
        bottom_shape();
}

module bottom_shape() {
    translate([corners_radius, corners_radius, 0])
        minkowski() {
            square([width - corners_radius*2, depth - corners_radius*2]);
            circle(corners_radius);
        }
}
```


[User]
Okay, so I'm looking to design some custom snap-on faces for a Jack-O'-Lantern, specifically for the one on Thingiverse by thjelmfelt, thing:2590046.  They have a modular design where you can swap out different face plates. I want to be able to import an SVG file as the basis for the cut-out shape for these face plates.

The existing files use an OpenSCAD file that acts like a customizer, letting you define a few parameters to adjust the SVG's position, size, and rotation, plus a "depth" that I believe sets the z offset from the main face, but it's kind of clunky.  I would like to improve on that.

I need OpenSCAD files that can do the following:

1.  **Import SVG:**  The main functionality needs to import an SVG file. The filename should be a configurable parameter.
2.  **Face and Slide Templates:** I need two base shapes, one for the main face plate and one for the "slide" part that holds the face on. These will be imported from .stl files, specifically: "JoL_Template_Face.Final.stl" and "JoL_Slide_Template.30.stl". These files will be included in the project, so they don't need to be generated by code.
3.  **Placement:** I need to be able to adjust the imported SVG's position along the X and Y axes and its Z offset. Also allow for scaling using separate "stretch" and "squish" parameters and to rotate around the Z axis (in degrees).
4.  **Mode Switch:** Provide a parameter, let's call it `type`, that allows me to switch between generating either the face plate or the slide component. If `type=0`, generate the face plate; `type=1` generates the slide component. The face plate should use `FACE_OFFSET=[5,40,0]` while the slide uses `SLIDE_OFFSET=[125,40,-44.5]`. These offsets should be applied to the overall model (STL + SVG).
5.  **Extrusion:** The SVG should be linearly extruded. The height of the extrusion should be a set constant value, `HEIGHT=200`. This is the height before the difference operation is performed.

Essentially, I'm trying to replicate the functionality of the provided customizer, but with a clearer design and maybe a bit more flexibility. The `depth` parameter on the current version is confusing, so a true Z offset, rather than a z-offset only if depth is non-zero, would be useful. I would like the resulting face/slide to be created as the `difference()` between the base shape and the extruded SVG.

I am hoping that you can provide all the required OpenSCAD files. I do not expect you to create the STL files for the base shapes or any example SVGs, those will be provided.

[Assistant]
Custom_Snap_On_Faces_for_Jack_O_Lantern.scad:
```
/*
    Custom_Snap_On_Faces_for Jack_O_Lantern

    Create a custom face for thjelmfelt's "Jack O'Lantern with Snap On Faces"
    https://www.thingiverse.com/thing:2590046

*/
// name of .svg file
filename=".svg";

type=0; // [0:face,1:slide]

depth=0; // [0:20]
x=0; // [-300:300]
y=0; // [-300:300]

// smaller (if too large)
squish = 1; // [1:0.1:30]

// larger (if too small)
stretch = 1; // [1:0.1:30]

// rotate (degrees)
rotate=0; // [-180:180]

/* [Hidden] */
HEIGHT=200;
FACE_OFFSET=[5,40,0];
SLIDE_OFFSET=[125,40,-44.5];

scale = (stretch > 1) ? stretch : (squish > 1) ? 1/squish : 1;
use_depth = depth == 0 ? -1 : depth;

module face() {
    rotate([0,0,rotate])
    translate([x,y,use_depth])
    linear_extrude(height=HEIGHT)
    scale(scale)
    import(filename);
}

module main_shape() {
    if (type == 0) {
        translate(FACE_OFFSET)
        import("JoL_Template_Face.Final.stl", center=true);
    } else {
        translate(SLIDE_OFFSET)
        import("JoL_Slide_Template.30.stl", center=true);
    }
}

difference() {
    main_shape();
    face();
}
```


[User]
I'm looking to create a customizable kaleidocycle and I'd like to use OpenSCAD to design it. I've seen a few online but I want to make my own version with specific parameters.

The kaleidocycle will be made of interconnected tetrahedral modules. Here's what I have in mind:

1.  **Basic Shape:** Each module will be a tetrahedron. I want to be able to choose how the faces are represented:
    *   **Filled:** A solid tetrahedron.
    *   **Wireframe:** A tetrahedron with lines connecting the vertices.
    *   **Curved Surface:** A tetrahedron with rounded edges and faces, basically a "smoothed-out" tetrahedron.

2.  **Size:** The overall size of the kaleidocycle should be adjustable with a parameter `L` representing the length of the edges of the central triangles in the assembled structure.

3.  **Roundness:** There should be a `roundness` parameter. When using the "Curved Surface" option, this will control the radius of the spheres used to create the rounded edges.

4.  **Pin Diameter:** The kaleidocycle will be held together by pins. I need a parameter `Dpin` to set the diameter of these pins.

5.  **Joint Gap:** There should be a small gap at the contact points between the modules to make assembly easier, controlled by a parameter `gap`.

6.  **Assembly:** I want to be able to produce either a single tetrahedral module, or all 6 modules connected into the full kaleidocycle.

7.  **OpenSCAD Libraries:** Please don't use any external libraries for this. I'd like to keep it all within vanilla OpenSCAD.

I think that covers the basic design, can you create the OpenSCAD files for this?

[Assistant]
kaleidocycle3.scad:
```
// Size in mm
L = 25; //[15:50]

// Diameter of the pin in mm
Dpin=1.0; //[0.5:0.1:5]

// Shape roundness (relative)
roundness=0.14;//[0.02:0.02:0.3]

// Gap at the contact in mm
gap     = 0.5;//[0:0.1:1]

// 6 modules combined
arrangement="combined"; //[combined:combined, single:single]

// Type of the body shape
type=2; //[1:Filled,2:Wireframe,3:Curved Surface]

//jointw=0.24;
H = L*sqrt(3);
Rpin=Dpin/2;
Rtetra = L*roundness;
Lp = Rtetra*2;
Rjoint= Rpin*5;
Wjoint = (L-Rtetra*(sqrt(3)+1/sqrt(3))-gap*2)/2.5; //L*jointw;

module cubicsphere(r=1){
    L = r*2/sqrt(3);
    rotate([(180-109.5)/2,0,0])
      rotate([0,0,45])
        cube(L, center=true);
}

module roundbond(p1=[0,0,0],p2=[1,1,1],r=1)
{
    hull(){
        translate(p1)
            cubicsphere(r);
        translate(p2)
            cubicsphere(r);
    }
}

module tetra(LL, HH, R, mode=3)
{
    render(){
        RR = R*(sqrt(3)+1/sqrt(3));
        HH0 = R*2; //axis offset at the open position
        v1 = [HH0,0,-(LL-RR)];
        v2 = [HH0,0,+(LL-RR)];
        v3 = [HH-HH0,+(LL-RR),0];
        v4 = [HH-HH0,-(LL-RR),0];
        if (mode==1){
            hull(){
                for(v=[v1,v2,v3,v4]){
                    translate(v)
                        cubicsphere(r=R);
                }
            }
        }
        else if(mode==2){
            for(v=[[v1,v2],[v1,v3],[v1,v4],[v2,v3],[v2,v4],[v3,v4]]){
                hull(){
                    translate(v[0])
                        cubicsphere(r=R);
                    translate(v[1])
                        cubicsphere(r=R);
                }
            }
        }
        else if(mode==3){
            for(a=[0.0:0.125:1-0.125]){
                b=a+0.125;
                hull(){
                    roundbond(v1*a+v3*(1-a), v2*a+v4*(1-a),R);
                    roundbond(v1*b+v3*(1-b), v2*b+v4*(1-b),R);
                }
            }
        }
    }
}

module female(Rpin, R1=Rjoint, R2=Rtetra, H=Wjoint, fn=6){
    difference(){
        hull(){
            rotate([0,0,30])
            cylinder(r=R1,h=H, center=true, $fn=fn);
            translate([Lp,0,0])
            rotate([0,0,30])
                cylinder(r=R2,h=H, center=true, $fn=fn);
        }
            cylinder(r=Rpin, h=Wjoint+0.01, $fn=40, center=true);
    }
}

module body(mode){
    //tetrahedron
    difference(){
        tetra(L,H,Rtetra,mode=mode);
        for (z=[-1:2:1]){
            translate([0,0,z*(Wjoint+gap)])
                for(a=[-60,60]){
                    rotate([0,0,a])
                        female(Rpin, R1=Rjoint+gap, R2=Rtetra+gap, H=Wjoint+gap*2, fn=30);
                }
        }
        translate([H/2,0,0])
            rotate([90,0,180])
                translate([-H/2,0,0])
                    for (z=[-2:2:2]){
                        translate([0,0,z*(Wjoint+gap)])
                            for(a=[-60,60]){
                                rotate([0,0,a])
                                                            female(Rpin, R1=Rjoint+gap, R2=Rtetra+gap, H=Wjoint+gap*2, fn=30);
                            }
                        }

    }
    for (z=[-2:4:2]){
        translate([0,0,z*(Wjoint+gap)])
            female(Rpin);
    }
    for (z=[0]){
        translate([0,0,z*(Wjoint+gap)])
            female(Rpin*1.2);
    }
    translate([H/2,0,0])
    rotate([90,0,180])
    translate([-H/2,0,0])
    for (z=[-1:2:1]){
        translate([0,0,z*(Wjoint+gap)])
            female(Rpin*1.2);
    }
}

module body2(mode){
    L2 = H /sqrt(3);
    translate([0,L2,0])
    rotate([90,0,0])
        body(mode=mode);
    translate([-H,L2,0])
        body(mode=mode);
}

if(arrangement=="combined"){
    for(b=[0,120,240]){
        rotate([0,0,b])
            body2(type);
    }
}
else{
    translate([-H/2,0,0])
        rotate([45,0,0])
            body(type);
}

```


[User]
I'd like to design a customizable object with a few different configurations. It'll have a base, a central part, and optionally a ring around the base. Let's call the core module `dinamik`.

The base will be a cylinder with a height `h` and a diameter `d1`, and it should have rounded corners using smaller cylinders of diameter `d2`. These corner cylinders should be placed such that they create rounded edges around the perimeter of the base. The central part should be a cylinder with a height `h3` and a diameter `d3` placed on top of the base. The base also needs to have holes drilled in it for mounting, located at the same corner positions as the rounded corner cylinders, and these should go all the way through the base. The mounting holes have a diameter of `do` and also should have a countersink/washer recess at each hole with diameter `dsh`, extending through a `lay*4` height. `bw` will be the length between these holes.

The central part will be inset from the edges of the base by 1 unit of length on each side. `d3` should be calculated as `di + 2` where di is the diameter of the inset.

I'd like to be able to optionally add a ring, which we'll call module `dko`. When the ring is present, the overall structure becomes `dinamik1`. The ring itself will be a cylinder with a height `h4` and an inner diameter `d3 + rz` and outer diameter `d4 + rz`, where `d4` is calculated as `di+wr+2` and `rz` is the gap between the ring and base. The ring rests on top of the base and surrounds the core.

There should also be a hexagonal pattern applied to the top, similar to a honeycomb, using a module `sot`, and this will sit on top of the core with the hexagon pattern facing upwards. The hexagon cells should have a width `sow` and a height `sohh`. The module `sot` is applied to the whole structure using module `sot1`. The height of the `sot1` structure will be `soh` and that `soh` is calculated as `sohh + h3`. The hexagons should also be 'cut' using a sphere of diameter `sphd`, and it should be positioned at the top of the hex pattern with respect to z coordinates so that only a small sphere section is cut out, creating a 'domed' structure over the hex pattern. This `sot1` module is applied to the overall structure in `dinamik1`.

The `rorb` variable determines whether the ring (module `dko`) or overall structure (module `dinamik1`) is generated. When `rorb` is 0, `dinamik1` is generated and when `rorb` is 1, `dko` is generated.

All of these parameters should be customizable and at the top level of the file.

So to recap, I'd like:

*   A module `dinamik` for the base and core.
*   A module `sot` to create the hexagon pattern.
*   A module `sot1` to apply the hexagon pattern on top with a 'domed' shape.
*   A module `dko` for the optional ring around the base.
*   A module `dinamik1` to assemble the full structure (core, base, hexagon, and optional ring) when `rorb` is 0.
*   The output to be either the `dinamik1` or `dko` structure depending on `rorb`, set at the top level.
*   All parameters should be customizable at the top level.

Please generate an OpenSCAD file or files to achieve this. I don't need any external libraries.

[Assistant]
dinamik.scad:
```
// Dinamic
// by Radus 2018
// http://vk.com/linuxbashev

// Parameters

rorb=0; // 0 base or 1 ring

h=2;    // height base
h3=3;   // height center
h4=2;   // height ring

di=130; // diameter inside
d1=160; // diameter outside
d2=22;  // diameter corners

wr=5;   // width ring

rz=0.2; // gap between ring and base

do=4.3; // diameter holes
dsh=10+2; // diameter washers

bw=115;  // length between holes

lay=0.2;    // layer height
sow=0.8;    // hex width nozzle*2
sohh=10;    // hex height
sodd=10;    // hex diameter

sphd=217;   // sphere diameter

// other formulas
d3=di+2;
d4=di+wr+2;

$fn=128;

sox=di+2;
soy=di+2;
soh=sohh+h3;

sod=sodd+sow;
sodx=sod*sin(360/6);

module sot() {
difference() {
	translate([0,0,soh/2]) cube([sox,soy,soh], true);

for (n=[0,1]) mirror([0,n,0])
	for (m=[0,1]) mirror([m,0,0])
	for (j=[0:sox/sodx]) translate([j*(sodx+sow), 0, 0])
	for (i=[0:sox/sodx]) {
	rotate([0,0,360/6])
	translate([i*(sodx+sow), 0, -1]) rotate([0,0,360/6/2]) cylinder(soh+2, sod/2, sod/2, $fn=6);
	rotate([0,0,360/6*2])
	translate([i*(sodx+sow), 0, -1]) rotate([0,0,360/6/2]) cylinder(soh+2, sod/2, sod/2, $fn=6);
	} // for i
} // df
} // mod sot

module dinamik(){
difference() {
union(){
hull(){
translate([0,0,h/2]) cylinder(h,d1/2,d1/2,true);
for (my=[0,1]) mirror([0,my,0])
for (mx=[0,1]) mirror([mx,0,0])
translate([-bw/2,-bw/2,h/2]) cylinder(h,d2/2,d2/2,true);
} // hl
translate([0,0,h3/2]) cylinder(h3,d3/2,d3/2,true);
} // un
translate([0,0,h3/2]) cylinder(h3+1, di/2,di/2,true);
for (my=[0,1]) mirror([0,my,0])
for (mx=[0,1]) mirror([mx,0,0]) {
translate([-bw/2,-bw/2,h/2]) cylinder(h+1,do/2,do/2,true);
translate([-bw/2,-bw/2,h]) cylinder(lay*4,dsh/2,dsh/2,true);
} // for

} // df
} // mod

module sot1(){
difference() {
difference() {
sot();
difference(){
translate([0,0,soh/2]) cylinder(soh+1,d1/2+40,d1/2+40,true);
//translate([0,0,soh/2]) cylinder(soh+2,di/2+1,di/2+1,true);
translate([0,0,-sphd+soh]) sphere(sphd);

} // df
} // df
translate([0,0,-sphd+soh-h3]) sphere(sphd);

} // df
} // mod

module dinamik1(){
difference(){
union(){
dinamik();
sot1();
} // un

difference(){
translate([0,0,h]) cylinder(h4+lay*2, d4/2+rz*2,d4/2+rz*2,true);
translate([0,0,h]) cylinder(h4+1, d3/2,d3/2,true);
} // df

} // df
} // mod

module dko(){
difference(){
translate([0,0,h]) cylinder(h4, d4/2+rz,d4/2+rz,true);
translate([0,0,h]) cylinder(h4+1, d3/2+rz,d3/2+rz,true);
} // df
} // mod

if (rorb==0)
dinamik1();
else
dko();

```


[User]
Okay, I'd like to create a parametric, modular magic cube design in OpenSCAD, similar to the one described in the provided text but more flexible and easier to customize. The existing code uses a specific "Yoshimoto" cube shape as the base, but I'd like to be able to choose between several different base shapes. I'm also going to want more control over the pins and connections, and I'd like different options for how the cube's sub-modules are structured.

Here's a breakdown of what I'm looking for:

**Core Cube Module (Base Shape):**

*   **Parametric Dimensions:** The overall cube size should be adjustable using a `cubesize` parameter, probably in mm.
*   **Base Shape Options:**
    *   **Solid Cube:** A simple cube with an optional internal gap.
    *   **Hollow Cube (Shell):** A hollow cube with adjustable wall thickness.
    *   **Step-wise Structure:** A nested cube-like structure where each layer is slightly smaller than the last, creating a stepped appearance, and using a `Ndiv` (number of divisions) to specify the number of steps.
    *   **Network/Cage Structure:** A frame-like structure made of intersecting bars, with a `Ndiv` to control the mesh density.
    *   **Yoshimoto Cube:** The original shape should be included, as a selectable option.
    *   **Sphere:** The base shape could also be a sphere centered within the cube with an adjustable radius.
*   **Internal Gap:** All cube shapes should support an adjustable gap (`gap`) between the outer cube dimensions and the shape itself; this will create the internal space for pins/connectors.

**Pin/Connection System:**

*   **Pin Diameter:** The pin diameter (`Dpin`) should be a parameter. The pins should be cylinders and should be created in pairs; one 'male' pin and one 'female' opening.
*   **Pin Placement:** The pins should be strategically placed to allow for rotation of adjacent cube modules as in the original design. I imagine I will need modules for the edge connections and for the corner connections, so that they will have the correct male/female orientations. They'll be placed on the edges and on the corners of the cubes, and it might be a good idea to allow me to control the depth to which they're embedded in the module.
*   **Pin Type:** I'd like to be able to toggle between a simple cylindrical pin/hole and a more secure bayonet-style pin/hole if possible.

**Assembly and Structure:**

*   **Module Arrangement:** The design should allow for assembling multiple cubes into a larger cube shape with edge connectors and corner connectors.
*   **Assembly Style:**  I'd like to be able to choose between several assembly styles:
    *   **Decomposed:** Each individual cube module is created separately, and then they are all positioned for an assembled display of the final cube, with the appropriate pins/connectors between them.
    *   **Combined:** All the cube modules, pins, and connector elements are combined into a single mesh, with no internal spaces.
    *   **Integrated:** The assembled cube will be created by generating the necessary connecting elements within each face of a series of basic blocks.
    *   **Modular:** The assembly style should also allow for a modular construction approach, where I can generate and export the separate cube and connector pieces individually for separate printing, and then assemble them myself.

**User Interface and Customization:**

*   **Parameters:** All of the parameters mentioned should be easily accessible and adjustable in the OpenSCAD customizer.
*   **Module Selection:** I want to be able to select the base shape type using a drop-down menu or similar method in the customizer.
*   **Commented Code:** Please add plenty of comments to make the code readable and easy to understand.

**Libraries:**

*   I expect that I will need the `BOSL2` library for the more complex shapes and transformations involved.

So, to summarize, I'm looking for a fully parametric and customizable magic cube generator with flexible base shapes, connection options, and assembly styles. I think this will be a fun project, and I'm looking forward to seeing what you come up with.

[Assistant]
OpenCube_pin.scad:
```
//Part size in mm
cubesize = 25; // [10:50]

//Gap in mm
gap = 0.6;     // [0.3:0.1:1.0]

// Pin diameter in mm
Dpin = 1.0;  //  [0.5:0.1:2.5]

// Division (steps, mesh)
Ndiv = 9; // [3:2:31]

// Type
type = 2; // [0:filled, 1:sphere, 2:steps, 3:cage, 4:original]

// Style
style = 3; // [1:decomposed, 2:combined, 3:integrated]

/* [Hidden] */
bdiv=5;
$fn=40;
bsize = cubesize/bdiv-gap;
binterval = bsize+gap;
jointgap = gap;  // gap at the joint
Rpin = Dpin/2;
rad = Rpin*5;

module quarter(r,h,gap){
    translate([gap/2,gap/2,0]){
        cube([r,r,h]);
    }
}

module end(r,h,gap){
    difference(){
        union(){
            quarter(r=rad+gap,h=h,gap=gap);
            cylinder(r=rad,h=h);
        }
        translate([0,0,h-rad]){
            cylinder(r1=0,r2=rad+0.1,h=rad+0.1);
        }
    }
}

module middle(r,h,gap){
    quarter(r=rad+gap,h=h,gap=gap);
    cylinder(r=rad,h=h);
    translate([0,0,h]){
        cylinder(r2=0,r1=rad,h=rad);
    }
    translate([0,0,-rad]){
        cylinder(r1=0,r2=rad,h=rad);
    }
}

//joint x-positive regions
module butterfly1(rad,height,jointgap,gap){
    for(z=[0:2:bdiv-1]){
        translate([0,0,z*binterval]){
            difference(){
                union(){
                    translate([gap/2,gap/2,0])
                        cube([rad*2,rad*sqrt(3)/2-gap/2,bsize]);
                    cylinder(r=rad,h=bsize, $fn=6);
                }
                translate([0,0,-0.1])
                    cylinder(r=Rpin,h=bsize+0.2);
            }
        }
    }
}

module butterfly2(rad,height,jointgap,gap){
    for(z=[1:2:bdiv-1]){
        translate([0,0,z*binterval]){
            difference(){
                union(){
                    translate([gap/2,gap/2,0])
                        cube([rad*2,rad*sqrt(3)/2-gap/2,bsize]);
                    cylinder(r=rad,h=bsize, $fn=6);
                }
                translate([0,0,-0.1])
                    cylinder(r=Rpin*1.2,h=bsize+0.2);
            }
        }
    }
}

module zerocube(cubesize,gap){
                translate([
                    gap/2,
                    gap/2,
                    gap/2
                ]){
                    cube([cubesize-gap,cubesize-gap,cubesize-gap]);
                }
}

module shell(L,t){
    difference(){
        cube([L,L,L]);
        translate([-0.1,-0.1,-0.1])
        cube([L-t+0.1,L-t+0.1,L-t+0.1]);
    }
}

module network(L,t,i,N){
    difference(){
        union(){
            for(x=[i:2:N]){
                for(y=[i:2:N]){
                    translate([x*t,y*t,i*t])
                        cube([t,t,L-i*t]);
                }
            }
            for(x=[i:2:N]){
                for(z=[i:2:N]){
                    translate([x*t,i*t,z*t])
                        cube([t,L-i*t,t]);
                }
            }
            for(y=[i:2:N]){
                for(z=[i:2:N]){
                    translate([i*t,y*t,z*t])
                        cube([L-i*t,t,t]);
                }
            }
        }
        translate([-1,-1,-1])
            cube([L-t*(i+1)+1,L-t*(i+1)+1,L-t*(i+1)+1]);
    }
}

module yoshimoto(){
    vv = [[0,0,0], [0,0,1], [0,1,0], [0,1,1], [1,0,0], [1,0,1], [1,1,0], [1,1,1], [0.5, 0.5, 0.5]];
    ff = [[7,6,4,5],[7,3,2,6],[7,5,1,3],[8,5,4],[8,4,6],[8,6,2],[8,2,3],[8,3,1],[8,1,5]];
    polyhedron(points=vv, faces=ff);
}

module onecube(cubesize,gap,type){
    if ( type == 0 ){
        zerocube(cubesize,gap);
    }
    else if (type == 1){
        difference(){
            zerocube(cubesize,gap);
            sphere(r=cubesize*0.85);
        }
    }
    else if ( type == 2 ){
        L0 = cubesize-gap;
        t  = L0/Ndiv;
        for(i=[0:(Ndiv-1)/2]){
            translate([t*i+gap/2,t*i+gap/2,t*i+gap/2])
            shell(L0-t*i,t*(i+1));
        }
    }
    else if ( type == 3 ){
        L0 = cubesize-gap;
        t  = L0/Ndiv;
        for(i=[0:2:0]){
            translate([gap/2,gap/2,gap/2])
                network(L0,t,i,Ndiv);
        }
    }
    else if (type==4){
        //original yoshimoto cube
        L0 = cubesize - gap;
        translate([gap/2,gap/2,gap/2])
            scale([L0,L0,L0])
                yoshimoto();
    }
}

module dig(cubesize,rad,gap){
    L = cubesize;
            translate([0,gap/2,L]){
                rotate([-90,0,0]){
                    cylinder(r=rad+gap,h=cubesize-gap);
                }
            }
            translate([L,0,gap/2]){
                    cylinder(r=rad+gap,h=cubesize-gap);
            }
}

module add(cubesize,rad,gap){
    L = cubesize;
            translate([0,gap/2,L]){
                rotate([-90,0,0]){
                    butterfly1(rad,cubesize-gap,jointgap,gap);
                }
            }
            translate([L,0,gap/2]){
                rotate([0,0,90])
                    butterfly2(rad,cubesize-gap,jointgap,gap);
            }
}

module dig2(cubesize,rad,gap){
    L = cubesize;
            translate([gap/2,L,0]){
                rotate([0,90,0]){
                    cylinder(r=rad+gap,h=cubesize-gap);
                }
            }
            translate([L,0,gap/2]){
                    cylinder(r=rad+gap,h=cubesize-gap);
            }
}

module add2(cubesize,rad,gap){
    L = cubesize;
            translate([gap/2,L,0]){
                rotate([0,90,0]){
                rotate([0,0,180])
                    butterfly1(rad,cubesize-gap,jointgap,gap);
                }
            }
            translate([L,0,gap/2]){
                rotate([0,0,90])
                    butterfly2(rad,cubesize-gap,jointgap,gap);
            }
}

module magiccube(cubesize,rad,gap,type){
    difference(){
        onecube(cubesize,gap,type);
        dig(cubesize,rad,gap);
    }
    add(cubesize,rad,gap);
}

module magiccube2(cubesize,rad,gap,type){
    difference(){
        onecube(cubesize,gap,type);
        dig2(cubesize,rad,gap);
    }
    add2(cubesize,rad,gap);
}

module half(type){
magiccube(cubesize,rad,gap,type);
    translate([cubesize,-cubesize,0])
rotate([-90,0,0])
mirror([0,1,0])
magiccube(cubesize,rad,gap,type);
translate([cubesize,-cubesize,0])
rotate([0,90,0])
rotate([90,0,90])
magiccube2(cubesize,rad,gap,type);
rotate([0,-90,-90])
mirror([1,0,0])
magiccube2(cubesize,rad,gap,type);
}

module half2(type){
    translate([-cubesize,-cubesize,-cubesize])
        magiccube(cubesize,rad,gap,type);
    translate([cubesize,-cubesize,-cubesize])
    rotate([-90,0,90])
    mirror([0,1,0])
        magiccube(cubesize,rad,gap,type);
    translate([-cubesize,cubesize,-cubesize])
    rotate([0,-90,90])
    mirror([0,1,0])
    magiccube2(cubesize,rad,gap,type);
    translate([cubesize,cubesize,-cubesize])
    rotate([0,0,180])
    magiccube2(cubesize,rad,gap,type);
}

if(style==2){
    half(type);
    rotate([0,180,0])
        half(type);
}
else if (style==1){
    //rotate([45,-(180-109.5)/2,0])
        translate([rad/2,cubesize,0])
            rotate([-90,0,-90])
            magiccube(cubesize,rad,gap,type);
    translate([rad/2,-rad*1.5,0])
        rotate([-180,0,0])
            magiccube2(cubesize,rad,gap,type);
    mirror([1,0,0]){
        translate([rad/2,cubesize,0])
            rotate([-90,0,-90])
                magiccube(cubesize,rad,gap,type);
        translate([rad/2,-rad*1.5,0])
            rotate([-180,0,0])
                magiccube2(cubesize,rad,gap,type);
    }
}
else if (style==3){
    //combined, for display
    half2(type);
    rotate([180,0,0])
        half2(type);
}

```


[User] Hi, I'd like to create an OpenSCAD design for a bed leveling test pattern for 3D printers. I'm envisioning a grid of test pads, and I want to be able to easily adjust the size of the bed, the number of pads, and the shapes of the pads, as well as line width and layer thickness. I'd need to be able to specify the bed's width, length, and margin. I'll also want to set the number of pads in both the x and y directions. For the pads themselves, I'd like to be able to choose between squares or circles, and set their size and thickness. Finally, I also need to control the first layer thickness and the line width used to print the grid around them. The code should use only the built-in OpenSCAD functions, nothing external. Could you generate a parametric OpenSCAD file for me?

[Assistant]
BedLevelTest.scad:
```
////----BedLevelTest.scad----
////----OpenSCAD 2015.03-2----
////----Kijja Chaovanakij----
////----2018.10.7----

/*[printer]*/
//bed x size[210]
bed_xsize=210;
//bed y size[270]
bed_ysize=270;
//bed margin[15]
bed_margin=15;

/*[layer and line]*/
//first layer thickness[0.24]
first_layer_thick=0.30;
//line size [multiplier of nozzle size]
line_size=2.4;

/*[element shape]*/
//element shape
element_shape=0; //[0:square,1:circle]
//element size[12]
element_size=12;
//element thickness[0.84]
element_thick=0.84;

/*[array pattern]*/
//number of array x size[3]
array_xsize=3; //[2:1:5]
//number of array y size[3]
array_ysize=3; //[2:1:5]

////----translate var---
x_c2c=bed_xsize-bed_margin*2-element_size;
y_c2c=bed_ysize-bed_margin*2-element_size;
x_space=x_c2c/(array_xsize-1);
y_space=y_c2c/(array_ysize-1);
echo("x_c2c",x_c2c);
echo("y_c2c",y_c2c);
echo("x_space",x_space);
echo("y_space",y_space);

////----main----
color("LightGreen"){
  element_shape();
  element_line();
}//c
//

module element_shape(){
  for (i=[-x_c2c/2:x_space:x_c2c/2])
    for (j=[-y_c2c/2:y_space:y_c2c/2])
      if (element_shape==0)
        translate([i,j,element_thick/2])
          cube([element_size,element_size,element_thick],true);
      else
        translate([i,j,element_thick/2])
          cylinder(element_thick,element_size/2,element_size/2,true);
}//m
//

module element_line(){
  for (i=[-x_c2c/2+x_space/2:x_space:x_c2c/2-x_space/2])
  for (j=[-y_c2c/2:y_space:y_c2c/2])
    translate([i,j,first_layer_thick/2])
      cube([x_space,line_size,first_layer_thick],true);

  for (i=[-x_c2c/2:x_space:x_c2c/2])
  for (j=[-y_c2c/2+y_space/2:y_space:y_c2c/2-y_space/2])
    translate([i,j,first_layer_thick/2])
      cube([line_size,y_space,first_layer_thick],true);
}//m

```


[User]
I'd like to create a parametric whiteboard tray, similar to the design I saw on Thingiverse, but I want it to be completely customizable and use a modular design that allows for easy extensions. I'm thinking of something that uses pins for connections but I need to control the pin sizes and tolerances.

The core design will be a main tray piece that slides onto a whiteboard frame with a T-shaped channel. This tray should have a base, a raised lip at the front, a pen divider that also acts as a pin support, and a curved front edge. I need to be able to specify the length, width, and thickness of the tray, as well as the dimensions of the T-rail, including its width, height, undercut depth (X), undercut height (Z) and offset from the back of the tray.

Additionally, I want to include end pieces that attach to the main tray using pins, and an optional cup section that can also be attached with pins. The cup should have its own height, length, and thickness parameters, and can be divided into two halves (left and right) for printing.

I would like to control pin diameters as well as adjustments for nozzle ooze that will be applied only to pin holes (not the pins themselves). This will allow me to use cut filament as pins without having to scale them.

I want to specify if I want bottom cuts for the tray, and adjust the radius of these cuts.

Finally, I want to have all of the parts generated based on a part variable, or render all of the parts if I select "all". This way I can print specific parts as needed.

I would also need a way to preview the parts with a specific view (south west). The entire design should be in millimeters, unless otherwise specified.

Could you generate the necessary OpenSCAD code for this? I don't have any specific preference for what libraries to use, but I know there are some good ones out there. I'm hoping it will use an approach that is easy to expand upon in the future if I want to make further additions to the tray system.

[Assistant]
whiteBoardTray.scad:
```
// Released under the Creative Commons: Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license.
// http://creativecommons.org/licenses/by-sa/3.0/
// Attribution may be made by linking to:  http://www.thingiverse.com/thing:1037034

//Choose to render all parts or specific parts.
part="all"; // [tray:Main Tray,lend:Left End,rend:Right End,cup:undivided Cup,rcup:Right half Cup, lcup: Left half Cup,pins:Pins,all:All]

bottomCutsSwitch=true; //false: no bottomcuts; true: withbottomcuts

//All measurements in mm unless otherwise indicated. Length of the main tray
trayLength=140;

//Width of the tray.
trayWidth=55;

//Thickness of the tray.
trayThickness=4;

//Width of the catch rail from tip to tip along the X axis.  See diagram in the thing page if this is not clear.
railWidth=10.6;

//Height of the catch rail from the top surface of the tray to the top top.  See diagram in the thing page if this is not clear.
railHeight=4.3;

//Depth of the rail undercut -- creates a 90 degree overhang, so don't make this too big.  See diagram in the thing page if this is not clear.
railUndercutX=2;

//Height of the rail undercut -- make this at least 1mm shorter than the total height.  A smaller number here makes the overhanging rails thicker.  See diagram in the thing page if this is not clear.
railUndercutZ=3.0;

//Distance from the back side of the tray to offset the entire catch rail.  See diagram in the thing page if this is not clear.
railOffset=2.71;

//Pin Diameter (for example, 3mm or 1.75mm would let you just cut up some filament - make each piece about 8-9 mm long).  You can also print the pins.
pinDiameter=1.75;

//This will add an adjustment to pinholes (but not to pins) to account for side ooze from your nozzle.  Your nozzle diameter is a good starting point.  You can also use this variable to tighten or loosen the fitment of pins (larger numbers loosen, smaller numbers (even negative) tighten by shrinking or enlarging the pinholes).  NOTE:  this is not applied to pins to make it possible to cut pins from filament.  If you want to enlarge pins to take into account ooze, you must do that in the pinDiameter variable.
oozeAdjustment=0.35;

//The Cup Parameters start here
//Be aware of the fact that trayWidth and trayThickness is also used for the Cup!
//Therefor the upper part matches the style of the Tray.
//The Length of the Cup. Cup can be devided(lcup and rcup) in two halfs (for printing).
cupLength = 80;
//The outer Heigth of the Cup. Inner Height is less, cause of the Bottom thickness
cupHeigth = 80;
//The Thickness of the Walls and the Bottom of the Cup
cupThickness = 4;

/* [Hidden] */
// preview[view:south west]

$fn=100;
pinRadius=pinDiameter/2;
oozeRadius=oozeAdjustment/2;

finalAssembly();

module finalAssembly()
{
    if (part=="lcup")
    {
        translate([-2*trayWidth + 20, 1, 0]) cupLeft(trayWidth,cupLength,trayThickness,cupHeigth,cupThickness);
    }
    else if (part=="rcup")
    {
        translate([-2*trayWidth + 20, 0, 0]) cupRight(trayWidth,cupLength,trayThickness,cupHeigth,cupThickness);
    }
    else if (part=="cup")
    {
        translate([-2*trayWidth + 20, 0, 0]) cup(trayWidth,cupLength,trayThickness,cupHeigth,cupThickness);
    }
	else if (part=="tray")
	{
		union()
		{
			//tray base
			difference()
			{
				union()
				{
					tray(trayWidth,trayLength,trayThickness);
					slide(trayWidth, trayLength, trayThickness, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
				}

				union()
				{
					trayPinCuts(trayWidth, -1,trayThickness);
					trayPinCuts(trayWidth, trayLength-5,trayThickness);
                    if (bottomCutsSwitch)
                    {
                        trayBottomCuts(trayWidth, trayLength, trayThickness);
                    }
				}
			}

		}
	} else if (part=="lend")
	{
		leftEnd(trayWidth, trayThickness+10, trayThickness);
	} else if (part=="rend")
	{
		rightEnd(trayWidth, trayThickness+10, trayThickness);
	} else if (part=="pins")
	{
		pins();
	} else if (part=="all")
	{
		union()
		{
			//tray base
			difference()
			{
				union()
				{
					tray(trayWidth,trayLength,trayThickness);
					slide(trayWidth, trayLength, trayThickness, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
				}

				union()
				{
					trayPinCuts(trayWidth, -1,trayThickness);
					trayPinCuts(trayWidth, trayLength-5,trayThickness);
                    if (bottomCutsSwitch)
                    {
                        if(trayThickness>=3)
                        {
                            trayBottomCuts(trayWidth, trayLength, trayThickness, 2);

                        } else if (trayThickness>=2 && trayThickness<3)
                        {
                            trayBottomCuts(trayWidth, trayLength, trayThickness, 1);
                        }
                    }
				}
			}

		}

		rightEnd(trayWidth, trayThickness+10, trayThickness);
		leftEnd(trayWidth, trayThickness+10, trayThickness);
		pins();

        translate([-2*trayWidth + 20, 1, 0]) cupLeft(trayWidth,cupLength,trayThickness,cupHeigth,cupThickness);
        translate([-2*trayWidth + 20, 0, 0]) cupRight(trayWidth,cupLength,trayThickness,cupHeigth,cupThickness);
	} else
	{
		cylinder(r=10, h=10);
		echo ("==================================================================");
		echo ("Error -- you must select a part! See available Parts below        ");
		echo (" -- all, tray, lend, rend, pins, cup, rcup or lcup. --            ");
        echo ("==================================================================");
	}
}

//********************************************************************************************
//--------------------------------TRAY PART

module tray(tW, tL, tT)
{
	//Basic tray parts
	union() //trayWidth, trayLength, trayThickness
	{
		//base
		cube([tW,tL,tT]);

		//lip
		translate([(-3*tT)+(tT/1.5),0,(4*tT)-(tT/2)]) rotate([-90,0,0]) cylinder(h=tL, r=tT);

		//pen divider, pin hole beefer
		translate([(tW*0.4),0,tT/3*2.6]) rotate([-90,0,0]) cylinder(h=tL, r=tT/3*2.5);

		//curved front, quarter section of cylinder
		difference()
		{
			translate([0,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tL, r=3*tT);
			translate([0,-1,(3*tT)]) rotate([-90,0,0]) cylinder(h=tL+2, r=2*tT);
			translate([0,-1,tT]) cube([6*tT+1,tL+2,6*tT+1]);
			translate([-6*tT,-1,3*tT]) cube([6*tT+1,tL+2,6*tT+1]);
		}
	}
}

module slide(tW, tL, tT, rW, rH, rX, rZ, rO)
{
	difference()
	{
		translate([tW-rO-rW,0,tT-1]) cube([rW,tL,rH+1]);
		translate([tW-rO-rW-1,-1,tT]) cube([rX+1,tL+2,rZ]);
		translate([tW-rO-rX,-1,tT]) cube([rX+2,tL+2,rZ]);
	}
}

module trayPinCuts(tW, yPos, tT)
{
	union()
	{
		//frontPinHole
		translate([(-3*tT)+(tT/1.5),yPos,(4*tT)-(tT/2)]) rotate([-90,0,0]) cylinder(h=6, r=pinRadius+oozeRadius);

		//middlePinHole
		 translate([(tW*0.4),yPos,tT/3*2.3]) rotate([-90,0,0]) cylinder(h=6, r=pinRadius+oozeRadius);

		//backPinHole
		translate([tW-railOffset-railWidth+(railWidth/2),yPos,tT/3*2.3]) rotate([-90,0,0])  cylinder(h=6, r=pinRadius+oozeRadius);
	}
}

module trayBottomCuts(tW, tL, tT, cutRadius)
{
	for (i=[10:10:tL-10])
	{
		translate([tW+1, i, 0]) rotate([0,-90,0]) cylinder(h=tW+(3*tT)+2, r=cutRadius);
	}
}

module rightEnd(tW, tL, tT)
{
	difference()
	{
		union()
		{
			translate([0,-(tT+11),0]) tray(tW, tL, tT);
			translate([0,-(tT+11),0]) slide(tW, tL, tT, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
			translate([0,-(tT+11),0]) endWall(tW, 3*tT, tT);
		}
		trayPinCuts(trayWidth, -6,trayThickness);
	}
}

module leftEnd(tW, tL, tT)
{
	difference()
	{
		union()
		{
			//note we need to use global trayLength here rather than the different lenght passed to this module here
			//because we need to move the piece on Y to the other end of the main tray.
			translate([0,(trayLength+1),0]) tray(tW, tT+10, tT);
			translate([0,(trayLength+1),0]) slide(tW, tT+10, tT, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
			translate([0,(trayLength+11),0]) endWall(tW, 3*tT, tT);
		}
		trayPinCuts(tW,trayLength,tT);
	}
}

module endWallB(tW, tL, tT)
{

	difference()
	{
		union()
		{
			cube([tW-railOffset-railWidth-(tW/8),tT,4*tT]);
			translate([0,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tT, r=3*tT);
		}
		translate([-(3*tT)-1,-1,4*tT]) cube([tW,tL+2,3*tT]);

	}
}

module endWall(tW, tL, tT)
{
	hull()
	{
		translate([tW*0.6,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tT, r=tT);
		translate([tW*0.6,0,tT]) rotate([-90,0,0]) cylinder(h=tT, r=tT);

		difference()
		{
			translate([0,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tT, r=3*tT);
			translate([-(3*tT)-1,-1,4*tT]) cube([tW,tL+2,3*tT]);
		}
	}
}

module pins()
{

	for (i=[0:3*pinRadius:18*pinRadius-1])
	{
		translate([-trayWidth/2,i,0]) cylinder(h=8, r=pinRadius);
	}
}

//********************************************************************************************
//--------------------------------CUP PART

module cupPinCuts(tW, cL, cT, cH)
{
    translate([(tW*0.4),cL - 5 ,cT/3*2.3 - cH]) rotate([-90,0,0]) cylinder(h=6, r=pinRadius+oozeRadius);
    translate([(tW*0.4),-1,cT/3*2.3 - cH]) rotate([-90,0,0]) cylinder(h=6, r=pinRadius+oozeRadius);
    if (part != "cup"){ //when Cup is not devided you dont need the holes in the middle
       translate([(tW*0.4),cL/2 - 4,cT/3*2.3 - cH]) rotate([-90,0,0]) cylinder(h=8, r=pinRadius+oozeRadius);
    }
}

module cup(tW, cL, tT, cH, cT)
{
    difference(){
        union(){
            tray(tW,cL,tT);
            slide(tW, cL, tT, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
            translate([0,0,-cH]) cube([tW-(railWidth + railOffset), cL, cH]);
        }
        difference(){ //The inner Part of the Cup, without the Rail on the Bottom
            translate([cT,cT,-cH+cT]) cube([tW-(railWidth + railOffset) - 2*cT, cL - 2*cT, tT*2 + cH - cT]);
            //pen divider, pin hole beefer at the bottom
            translate([(tW*0.4),0,cT/3*2.6 - cH ]) rotate([-90,0,0]) cylinder(h=cL, r=cT/3*2.5);
        }

        trayPinCuts(tW, -1,tT);
        trayPinCuts(tW, cL-5,tT);
        if (part != "cup"){ //when Cup is not devided you dont need the holes in the middle
            trayPinCuts(tW, cL/2 - 3, tT);
        }
        cupPinCuts(tW, cL, cT, cH);
    }
}

module cupLeft(tW, cL, tT, cH, cT)
{
    difference(){
        cup(tW, cL, tT, cH, cT);
        translate([-tW,-cL/2,-2*cH]) cube([3*tW, cL, 3* cH]);
    }
}

module cupRight(tW, cL, tT, cH, cT)
{
    difference(){
        cup(tW, cL, tT, cH, cT);
        translate([-tW, cL/2,-2*cH]) cube([3*tW, cL, 3* cH]);
    }
}

```


[User]
I'm looking to create a parametric OpenSCAD model for generating projection disks, specifically for use with an IKEA LED torch pinhole projector. I want to be able to import an image and use it to create the pinhole pattern on the disk. Here's what I need:

1.  **Disk Base:** The disk should have a base shape with a small lip on top. The dimensions for the base should be adjustable through parameters. The base disk should be composed of the following:
    *   A cylinder of a specified radius and height.
    *   A smaller cylinder, offset vertically and with a slightly smaller radius, sitting on top of the base cylinder.
    *  A third cylinder sitting on top of the second with the same radius as the second and the same height as the first.
    *  A final small cylinder (the pinhole) off to the side of the others.
   *  A thin cube that connects the final cylinder to the main structure.
2.  **Image Import:** I need to be able to import a 2D image file. This image will be used to generate a raised surface on the disk which will be the pinholes. I'll need to set the dimensions of this image surface and control its position, including a z-offset and depth.
3.  **Debug View:** It'd be helpful to have a debug view option that lets me see the image surface in the same space as the disk base. This should be a simple boolean to enable or disable it. When disabled the image surface will be used to cut away from the disk base.
4.  **Image Dimensions:** I need to be able to adjust the image width and height.
5.  **Parameters:** All the relevant dimensions (radius, height, offsets, etc.) should be controlled via parameters so I can customize the disk for different images and setups.

I would like the code to use the `surface()` function for importing the image and the `difference()` function to create the pinhole effect. The final generated disk should use this subtraction.

I expect the code will be created in two files: one to generate the base of the disk, and another to generate the image surface and combine it with the base. I'd also like to be able to use the files in the Thingiverse Customizer, so please avoid using STL file imports.

[Assistant]
itp_disk_gen.scad:
```
// Ikea led torch pinhole projector disk generator
// 2018/10/07
// Author: crashdebug
// Thingiverse link: https://www.thingiverse.com/thing:3142042
// Licensed under the Creative Commons - Attribution - Non-Commercial -
// Share Alike license.
//

// Maximum 100x100 image, should be white on black for best results
image_file = "image-surface.dat"; // [image_surface:100x100]
//image_file = "KnightHead.png";
//image_file = "snail_small_linear.png";

image_width = 20; // [1:30]
image_height = 20; // [1:30]

/* [Advanced] */

// set to true to check alignment of image with disk
debug_view = "false"; // [true, false]

// moves the image surface up/down
image_z_offset = -5; // [-20:20]
// adjusts the depth of the image surface
image_z_depth = 20;    // [1:20]

// customizer generates the surface in a strange way, default offset
// should be -15 when not using customizer.

// importing stl is not possible in thingiverse customizer
// import("disk_blank.stl", convexity=3);
module disk_blank()
{
    union() {
        cylinder(r1=14.9, r2=14.9, h=1, $fn=32);
        translate([0,0,1])
            cylinder(r1=14.9, r2=13.5, h=0.5, $fn=32);
        translate([0,0,1.5])
            cylinder(r1=13.5, r2=13.5, h=0.5, $fn=32);
        translate([20,0,0])
            cylinder(r1=5, r2=5, h=1, $fn=32);
        translate([10,-5,0])
            cube([10,10,1]);
    }
}

module image_surface_positioned()
{
    translate([0,0,image_z_offset])
            resize(newsize=[image_width,image_height,image_z_depth])
                surface(file = image_file, center = true);
}

module generate_disk()
{
    if ( debug_view == "false" ) {
        difference() {
            disk_blank();
            image_surface_positioned();
        }
    } else {
        union() {
            disk_blank();
            image_surface_positioned();
        }
    }
}

generate_disk();

```


[User]
Hi, I'm looking to create a modular castle playset, and I need a standard wall module. I've seen some designs online, but I'd like to have a parametric one built from scratch, using a design that is very similar to those I've attached, which have a few key features:

*   **Overall Dimensions:** The wall should be 80mm wide and 40mm deep, and the height should be a parameter that I can set, with a default of 46mm, or 34mm before the battlements.

*   **Wall Thickness:** The main wall thickness should be a parameter, let's call it `d`, with a default of 3mm. There should be another parameter, let's call it `dx`, with a default of 7mm, which is the thickness of the wall where the connectors are.

*   **Chamfers:** The bottom edge should have a chamfer, defined by parameter `c`, with a default of 1mm, and the top edges of the main body should have a chamfer too, defined by parameter `tc` with a default of 0.5mm.

*   **Core:** The wall can be either hollow or solid. This should be controlled by a boolean parameter, `is_solid`, defaulting to 0 (hollow). If hollow, there needs to be an internal curved void going along the length of the wall. If solid, the void will be filled.

*   **Brims:** There should be a parameter, `has_brims`, defaulting to 0 (no brims), that can be set to 1 to add brims for printing. The brims should be rectangular cylinders placed at the four corners of the wall, on the base layer only, of 9mm diameter and .3mm height.

*   **Battlements:** On the top of the wall, there should be a flat section (10mm deep) which adds 12mm of height. It should have three cuboid elements, battlements, each 15mm wide, 10mm deep and 12mm tall with the top chamfered. These battlements should be spaced evenly across the top of the wall.

*   **Connectors:** The walls need to have connectors on either end. This design uses a dovetail-style connector.

*   **File Format:** Please use OpenSCAD for all files.
*   **$fn:** The number of facets used for rounded elements should be set using `$fn = 128`.

Can you generate the OpenSCAD code for this? Also, can you ensure that all dimensions are driven by variables and not hardcoded values, where possible? This will make it easier to reuse in other modular pieces.

[Assistant]
Modular_Castle_Playset_-_Standard_Wall_V3.1.scad:
```
// Standard Wall
// V3.1 by Bikecyclist, 12 March   2018: New Parameter: Total wall height
// V3   by Bikecyclist, 07 October 2018: Customizer doesn't speak boolean?!
// V2   by Bikecyclist, 07 October 2018: Customizer Syntax Fix
// V1   by Bikecyclist, 07 October 2018
// https://www.thingiverse.com/thing:3142698
//
// For use with Modular Castle Playset:
// https://www.thingiverse.com/thing:1930665
//
// More things for the Modular Castle Playset: https://www.thingiverse.com/Bikecyclist/collections/modular-castle-playset

// Total wall height (default is 46 mm)
total_wall_height = 46;

wall_height = total_wall_height - 12;

// Wall thickness
d = 3;

// Wall thickness for walls with connectors
dx = 7;

// Bottom Chamfer
c = 1;

// Top Chamfer
tc = 0.5;

// Solid core - uses more material, depending on slicer settings (0 = no solid core)
is_solid = 0;

// Add brims for printing? These are easier to remove than the slicer's. (0 = no brims)
has_brims = 0;

// Number of facets for rounded elements
$fn = 128;

// Small distance to ensure proper meshing
epsilon = 0.01;

standard_wall (is_solid);

if (has_brims != 0)
    brims ();

module brims ()
{
    for (i = [-1, 1])
        translate ([80/2 * i, 0, 0])
            hull ()
                for (j = [-1, 1])
                    translate ([0, 40/2 * j, 0])
                        cylinder (d = 9, h = 0.3);
}

module standard_wall (solid = 0)
{
    difference ()
    {
        ccube ([80 + epsilon, 40 + epsilon, wall_height + epsilon], c, 0);

        if (solid == 0)
          epstep (-1)
            intersection ()
            {
                rotate ([0, 90, 0])
                    translate ([0, 0, -(80 - 2 * dx)/2])
                        linear_extrude (80 - 2 * dx)
                            arc (wall_height - d, 8);

                ccube ([80 - 2 * d, 40 - 2 * d, wall_height - d]);
            }

        epstep (-1)
            for (i = [-1, 1])
                translate ([80/2 * i, 0, 0])
                    connectivity (i);
    }

    for (j = [-1, 1])
    {
        translate ([0, j * (40/2 - 10/2), wall_height])
        {
            ccube ([80, 10, 6], 0, tc, true);

            for (i = [-1:1])
                translate ([26.75 * i, 0, 0])
                        ccube ([15, 10, 12], 0, tc);
        }
    }
}

module ccube (c, bc = 0, tc = 0, xonly = false)
{
    bcx = xonly ? 0 : bc;
    tcx = xonly ? 0 : tc;

    hull ()
    {
        translate ([0, 0, (c[2] + bc - tc)/2])
            cube ([c[0], c[1], c[2] - bc - tc], center = true);

        translate ([0, 0, c[2] - tc/2])
            cube ([c[0] - 2 * tcx, c[1] - 2 * tc, tc], center = true);
    }

    hull ()
    {
        translate ([0, 0, (c[2] + bc - tc)/2])
            cube ([c[0], c[1], c[2] - bc - tc], center = true);

        translate ([0, 0, bc/2])
            cube ([c[0] - 2 * bcx, c[1] - 2 * bc, bc], center = true);
    }
}

module epstep (s)
{
    translate ([0, 0, s * epsilon])
        children ();
}

module arc (ra, h)
{
    translate ([-h, -ra/2, 0])
        union ()
        {
            intersection ()
            {
                circle (ra);

                translate ([0, ra, 0])
                    circle (ra);

                translate ([-ra, 0, 0])
                    square ([ra, ra]);
            }
            square ([h, ra]);
        }
}

module connectivity (i)
{
    connector_hole ();

    rotate ([0, 0, -i * 90])
    {
        translate ([0, 0, 27.5])
            rotate ([90, 0, 0])
                cylinder (d1 = 2.2, d2 = 1.75, h = 7.5);

        translate ([0, 0 + 1e-2, 27.5])
            rotate ([90, 0, 0])
                cylinder (d1 = 3.2, d2 = 0, h = 1.6);
    }
}

module connector_hole ()
{
    h = 17;
    wl = 15.7;

    wcl = 5.82;
    ll = 23.75;
    rl = 3.25;
    r2l = 1;
    offl = 7.75;

    wcu = 3.44;
    lu = 20.68;
    ru = 3;
    r2u = 1;
    yu = -1.5;
    du = 0.81 + ru + r2u;

    hull()
    {
        cube ([ll, wcl, epsilon], center = true);

        translate ([0, 0, h])
            cube ([lu, wcu, epsilon], center = true);
    }

    connector_hole_dovetail ();

    mirror ([1, 0, 0])
        connector_hole_dovetail ();

    module connector_hole_dovetail ()
    {
        hull()
        {
            for (i = [-1, 1])
            {
                translate ([offl, i * (wl/2 - rl), 0])
                    cylinder (r = rl, epsilon);

                translate ([ll/2 - r2l, i * (wl/2 - r2l), 0])
                    cylinder (r = r2l, epsilon);

                difference ()
                {
                    translate ([lu/2 + ru - du, i * (wl/2 - ru + yu), h])
                        cylinder (r = ru, epsilon);

                    translate ([lu/2 + ru - du, -wl/2, h])
                        cube ([ru, wl, 0.1]);
                }

                translate ([lu/2 - r2u, i * (wl/2 - r2u + yu), h])
                    cylinder (r = r2u, epsilon);
            }
        }
    }
}
```
Modular_Castle_Playset_-_Standard_Wall.scad:
```
// Standard Wall
// V3 by Bikecyclist, 07 October 2018: Customizer doesn't speak boolean?!
// V2 by Bikecyclist, 07 October 2018: Customizer Syntax Fix
// V1 by Bikecyclist, 07 October 2018
// https://www.thingiverse.com/thing:3142698
//
// For use with Modular Castle Playset:
// https://www.thingiverse.com/thing:1930665
//
// More things for the Modular Castle Playset: https://www.thingiverse.com/Bikecyclist/collections/modular-castle-playset

// Wall thickness
d = 3;

// Wall thickness for walls with connectors
dx = 7;

// Bottom Chamfer
c = 1;

// Top Chamfer
tc = 0.5;

// Solid core - uses more material, depending on slicer settings (0 = no solid core)
is_solid = 0;

// Add brims for printing? These are easier to remove than the slicer's. (0 = no brims)
has_brims = 0;

// Number of facets for rounded elements
$fn = 128;

// Small distance to ensure proper meshing
epsilon = 0.01;

standard_wall (is_solid);

if (has_brims != 0)
    brims ();

module brims ()
{
    for (i = [-1, 1])
        translate ([80/2 * i, 0, 0])
            hull ()
                for (j = [-1, 1])
                    translate ([0, 40/2 * j, 0])
                        cylinder (d = 9, h = 0.3);
}

module standard_wall (solid = 0)
{
    difference ()
    {
        ccube ([80 + epsilon, 40 + epsilon, 34 + epsilon], c, 0);

        if (solid == 0)
          epstep (-1)
            intersection ()
            {
                rotate ([0, 90, 0])
                    translate ([0, 0, -(80 - 2 * dx)/2])
                        linear_extrude (80 - 2 * dx)
                            arc (34 - d, 8);

                ccube ([80 - 2 * d, 40 - 2 * d, 34 - d]);
            }

        epstep (-1)
            for (i = [-1, 1])
                translate ([80/2 * i, 0, 0])
                    connectivity (i);
    }

    for (j = [-1, 1])
    {
        translate ([0, j * (40/2 - 10/2), 34])
        {
            ccube ([80, 10, 6], 0, tc, true);

            for (i = [-1:1])
                translate ([26.75 * i, 0, 0])
                        ccube ([15, 10, 12], 0, tc);
        }
    }
}

module ccube (c, bc = 0, tc = 0, xonly = false)
{
    bcx = xonly ? 0 : bc;
    tcx = xonly ? 0 : tc;

    hull ()
    {
        translate ([0, 0, (c[2] + bc - tc)/2])
            cube ([c[0], c[1], c[2] - bc - tc], center = true);

        translate ([0, 0, c[2] - tc/2])
            cube ([c[0] - 2 * tcx, c[1] - 2 * tc, tc], center = true);
    }

    hull ()
    {
        translate ([0, 0, (c[2] + bc - tc)/2])
            cube ([c[0], c[1], c[2] - bc - tc], center = true);

        translate ([0, 0, bc/2])
            cube ([c[0] - 2 * bcx, c[1] - 2 * bc, bc], center = true);
    }
}

module epstep (s)
{
    translate ([0, 0, s * epsilon])
        children ();
}

module arc (ra, h)
{
    translate ([-h, -ra/2, 0])
        union ()
        {
            intersection ()
            {
                circle (ra);

                translate ([0, ra, 0])
                    circle (ra);

                translate ([-ra, 0, 0])
                    square ([ra, ra]);
            }
            square ([h, ra]);
        }
}

module connectivity (i)
{
    connector_hole ();

    rotate ([0, 0, -i * 90])
    {
        translate ([0, 0, 27.5])
            rotate ([90, 0, 0])
                cylinder (d1 = 2.2, d2 = 1.75, h = 7.5);

        translate ([0, 0 + 1e-2, 27.5])
            rotate ([90, 0, 0])
                cylinder (d1 = 3.2, d2 = 0, h = 1.6);
    }
}

module connector_hole ()
{
    h = 17;
    wl = 15.7;

    wcl = 5.82;
    ll = 23.75;
    rl = 3.25;
    r2l = 1;
    offl = 7.75;

    wcu = 3.44;
    lu = 20.68;
    ru = 3;
    r2u = 1;
    yu = -1.5;
    du = 0.81 + ru + r2u;

    hull()
    {
        cube ([ll, wcl, epsilon], center = true);

        translate ([0, 0, h])
            cube ([lu, wcu, epsilon], center = true);
    }

    connector_hole_dovetail ();

    mirror ([1, 0, 0])
        connector_hole_dovetail ();

    module connector_hole_dovetail ()
    {
        hull()
        {
            for (i = [-1, 1])
            {
                translate ([offl, i * (wl/2 - rl), 0])
                    cylinder (r = rl, epsilon);

                translate ([ll/2 - r2l, i * (wl/2 - r2l), 0])
                    cylinder (r = r2l, epsilon);

                difference ()
                {
                    translate ([lu/2 + ru - du, i * (wl/2 - ru + yu), h])
                        cylinder (r = ru, epsilon);

                    translate ([lu/2 + ru - du, -wl/2, h])
                        cube ([ru, wl, 0.1]);
                }

                translate ([lu/2 - r2u, i * (wl/2 - r2u + yu), h])
                    cylinder (r = r2u, epsilon);
            }
        }
    }
}
```