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Add linear_sweep examples with disconnected texture ends and show fix

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Adrian Mariano 2023-01-15 09:25:38 -05:00
parent 46b5bf2709
commit 84d2e3d417
1 changed files with 49 additions and 16 deletions
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65
skin.scad
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@ -625,28 +625,61 @@ function skin(profiles, slices, refine=1, method="direct", sampling, caps, close
// ] // ]
// ]; // ];
// linear_sweep(path, texture=tex, tex_size=[5,5], h=40); // linear_sweep(path, texture=tex, tex_size=[5,5], h=40);
// Example: VNF tile that has no top/bottom edges and produces a disconnected result
// shape = skin([
// rect(2/5),
// rect(2/3),
// rect(2/5)
// ],
// z=[0,1/2,1],
// slices=0,
// caps=false);
// tile = move([0,1/2,2/3],yrot(90,shape));
// linear_sweep(
// circle(20), texture=tile,
// tex_size=[10,10],tex_scale=5,
// h=40,convexity=4);
// Example: As Function // Example: As Function
// path = glued_circles(r=15, spread=40, tangent=45); // path = glued_circles(r=15, spread=40, tangent=45);
// vnf = linear_sweep( // vnf = linear_sweep(
// path, h=40, texture="trunc_pyramids", tex_size=[5,5], // path, h=40, texture="trunc_pyramids", tex_size=[5,5],
// tex_scale=1, style="convex"); // tex_scale=1, style="convex");
// vnf_polyhedron(vnf, convexity=10); // vnf_polyhedron(vnf, convexity=10);
// Example: VNF tile that has no top/bottom edges and produces a disconnected result
// shape = skin([rect(2/5),
// rect(2/3),
// rect(2/5)],
// z=[0,1/2,1],
// slices=0,
// caps=false);
// tile = move([0,1/2,2/3],yrot(90,shape));
// linear_sweep(circle(20), texture=tile,
// tex_size=[10,10],tex_scale=5,
// h=40,convexity=4);
// Example: The same tile from above, turned 90 degrees, creates problems at the ends, because the end cap is not a connected polygon. When the ends are disconnected you may find that some parts of the end cap are missing and spurious polygons included.
// shape = skin([rect(2/5),
// rect(2/3),
// rect(2/5)],
// z=[0,1/2,1],
// slices=0,
// caps=false);
// tile = move([1/2,1,2/3],xrot(90,shape));
// linear_sweep(circle(20), texture=tile,
// tex_size=[30,20],tex_scale=15,
// h=40,convexity=4);
// Example: This example shoes some endcap polygons missing and a spurious triangle
// shape = skin([rect(2/5),
// rect(2/3),
// rect(2/5)],
// z=[0,1/2,1],
// slices=0,
// caps=false);
// tile = xscale(.5,move([1/2,1,2/3],xrot(90,shape)));
// doubletile = vnf_join([tile, right(.5,tile)]);
// linear_sweep(circle(20), texture=doubletile,
// tex_size=[45,45],tex_scale=15, h=40);
// Example: You can fix ends for disconnected cases using {{top_half()}} and {{bottom_half()}}
// shape = skin([rect(2/5),
// rect(2/3),
// rect(2/5)],
// z=[0,1/2,1],
// slices=0,
// caps=false);
// tile = move([1/2,1,2/3],xrot(90,shape));
// vnf_polyhedron(
// top_half(
// bottom_half(
// linear_sweep(circle(20), texture=tile,
// tex_size=[30,20],tex_scale=15,
// h=40.2,caps=false),
// z=20),
// z=-20));
module linear_sweep( module linear_sweep(
region, height, center, region, height, center,