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Fix face orientation bugs in vnf_vertex_array, rounded_prism,

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bezier_patch_degenerate.  Added reverse option to count().
This commit is contained in:
Adrian Mariano
2021-04-12 20:15:01 -04:00
parent d4d5794ef2
commit dea5949df8
4 changed files with 67 additions and 70 deletions
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8
rounding.scad
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@@ -1779,8 +1779,8 @@ function _rp_compute_patches(top, bot, rtop, rsides, ktop, ksides, concave) =
// M = path3d(turtle(["left", 180, "length",3,"move", "left", "move", 3, "right", "move", "right", "move", 4, "right", "move", 3, "right", "move", 2]));
// rounded_prism(M, apply(right(1)*scale(.75)*up(3),M), joint_top=0.5, joint_bot=0.2, joint_sides=[.2,1,1,0.5,1.5,.5,2], splinesteps=32);
// Example: this example shows most of the different types of patches that rounded_prism creates. Note that some of the patches are close to interfering with each other across the top of the polyhedron, which would create an invalid result.
N = apply(rot(180)*yscale(.8),turtle(["length",3,"left", "move", 2, "right", 135, "move", sqrt(2), "left", "move", sqrt(2), "right", 135, "move", 2]));
rounded_prism(N, height=3, joint_bot=0.5, joint_top=1.25, joint_sides=[[1,1.75],0,.5,.5,2], debug=true);
// N = apply(rot(180)*yscale(.8),turtle(["length",3,"left", "move", 2, "right", 135, "move", sqrt(2), "left", "move", sqrt(2), "right", 135, "move", 2]));
// rounded_prism(N, height=3, joint_bot=0.5, joint_top=1.25, joint_sides=[[1,1.75],0,.5,.5,2], debug=true);
// Example: This object has different scales on its different axies. Here is the largest symmetric rounding that fits. Note that the rounding is slightly smaller than the object dimensions because of roundoff error.
// rounded_prism(square([100.1,30.1]), height=8.1, joint_top=4, joint_bot=4, joint_sides=15, k_sides=0.3, splinesteps=32);
// Example: Using asymetric rounding enables a much more rounded form:
@@ -1886,8 +1886,8 @@ function rounded_prism(bottom, top, joint_bot=0, joint_top=0, joint_sides=0, k_b
let(
// Entries in the next two lists have the form [edges, vnf] where
// edges is a list [leftedge, rightedge, topedge, botedge]
top_samples = [for(patch=top_patch) bezier_patch_degenerate(patch,splinesteps,reverse=true,return_edges=true) ],
bot_samples = [for(patch=bot_patch) bezier_patch_degenerate(patch,splinesteps,reverse=false,return_edges=true) ],
top_samples = [for(patch=top_patch) bezier_patch_degenerate(patch,splinesteps,reverse=false,return_edges=true) ],
bot_samples = [for(patch=bot_patch) bezier_patch_degenerate(patch,splinesteps,reverse=true,return_edges=true) ],
leftidx=0,
rightidx=1,
topidx=2,