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Added scutoid example

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Adrian Mariano 2020-10-08 15:59:28 -04:00
parent 5b739deb58
commit db54881dd3
1 changed files with 26 additions and 0 deletions
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skin.scad
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@ -298,6 +298,32 @@ include <vnf.scad>
// for (ang = [0:5:360]) // for (ang = [0:5:360])
// rot([0,ang,0], cp=[100,0,0], p=rot(ang/2, p=path3d(square([1,30],center=true)))) // rot([0,ang,0], cp=[100,0,0], p=rot(ang/2, p=path3d(square([1,30],center=true))))
// ], caps=false, slices=0, refine=20); // ], caps=false, slices=0, refine=20);
// Example: This model of two scutoids packed together is based on https://www.thingiverse.com/thing:3024272 by mathgrrl
// sidelen = 10; // Side length of scutoid
// height = 25; // Height of scutoid
// angle = -15; // Angle (twists the entire form)
// push = -5; // Push (translates the base away from the top)
// flare = 1; // Flare (the two pieces will be different unless this is 1)
// midpoint = .5; // Height of the extra vertex (as a fraction of total height); the two pieces will be different unless this is .5)
// pushvec = rot(angle/2,p=push*RIGHT); // Push direction is the the average of the top and bottom mating edges
// pent = path3d(apply(move(pushvec)*rot(angle),pentagon(side=sidelen,align_side=RIGHT,anchor="side0")));
// hex = path3d(hexagon(side=flare*sidelen, align_side=RIGHT, anchor="side0"),height);
// pentmate = path3d(pentagon(side=flare*sidelen,align_side=LEFT,anchor="side0"),height);
// // Native index would require mapping first and last vertices together, which is not allowed, so shift
// hexmate = polygon_shift(
// path3d(apply(move(pushvec)*rot(angle),hexagon(side=sidelen,align_side=LEFT,anchor="side0"))),
// -1);
// join_vertex = lerp(
// mean(select(hex,1,2)), // midpoint of "extra" hex edge
// mean(select(hexmate,0,1)), // midpoint of "extra" hexmate edge
// midpoint);
// augpent = repeat_entries(pent, [1,2,1,1,1]); // Vertex 1 will split at the top forming a triangular face with the hexagon
// augpent_mate = repeat_entries(pentmate,[2,1,1,1,1]); // For mating pentagon it is vertex 0 that splits
// // Middle is the interpolation between top and bottom except for the join vertex, which is doubled because it splits
// middle = list_set(lerp(augpent,hex,midpoint),[1,2],[join_vertex,join_vertex]);
// middle_mate = list_set(lerp(hexmate,augpent_mate,midpoint), [0,1], [join_vertex,join_vertex]);
// skin([augpent,middle,hex], slices=10, refine=10, sampling="segment");
// color("green")skin([augpent_mate,middle_mate,hexmate], slices=10,refine=10, sampling="segment");
// Example: If you create a self-intersecting polyhedron the result is invalid. In some cases self-intersection may be obvous. Here is a more subtle example. // Example: If you create a self-intersecting polyhedron the result is invalid. In some cases self-intersection may be obvous. Here is a more subtle example.
// skin([ // skin([
// for (a = [0:30:180]) let( // for (a = [0:30:180]) let(