OpenSCAD User Manual/Commented Example Projects
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The text in its current form is incomplete. |
Dodecahedron
//create a dodecahedron by intersecting 6 boxes
module dodecahedron(height)
{
scale([height,height,height]) //scale by height parameter
{
intersection(){
//make a cube
cube([2,2,1], center = true);
intersection_for(i=[0:4]) //loop i from 0 to 4, and intersect results
{
//make a cube, rotate it 116.565 degrees around the X axis,
//then 72*i around the Z axis
rotate([0,0,72*i])
rotate([116.565,0,0])
cube([2,2,1], center = true);
}
}
}
}
//create 3 stacked dodecahedra
//call the module with a height of 1 and move up 2
translate([0,0,2])dodecahedron(1);
//call the module with a height of 2
dodecahedron(2);
//call the module with a height of 4 and move down 4
translate([0,0,-4])dodecahedron(4);
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The Dodecahedron as rendered from the example.
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Bounding Box
// Rather kludgy module for determining bounding box from intersecting projections
module BoundingBox()
{
intersection()
{
translate([0,0,0])
linear_extrude(height = 1000, center = true, convexity = 10, twist = 0)
projection(cut=false) intersection()
{
rotate([0,90,0])
linear_extrude(height = 1000, center = true, convexity = 10, twist = 0)
projection(cut=false)
rotate([0,-90,0])
child(0);
rotate([90,0,0])
linear_extrude(height = 1000, center = true, convexity = 10, twist = 0)
projection(cut=false)
rotate([-90,0,0])
child(0);
}
rotate([90,0,0])
linear_extrude(height = 1000, center = true, convexity = 10, twist = 0)
projection(cut=false)
rotate([-90,0,0])
intersection()
{
rotate([0,90,0])
linear_extrude(height = 1000, center = true, convexity = 10, twist = 0)
projection(cut=false)
rotate([0,-90,0])
child(0);
rotate([0,0,0])
linear_extrude(height = 1000, center = true, convexity = 10, twist = 0)
projection(cut=false)
rotate([0,0,0])
child(0);
}
}
}
// Test module on ellipsoid
translate([0,0,40]) scale([1,2,3]) sphere(r=5);
BoundingBox() scale([1,2,3]) sphere(r=5);
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Bounding Box applied to an Ellipsoid
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