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Optimized bezier_patch()

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Revar Desmera
2020-03-20 14:27:11 -07:00
parent f65228f0af
commit 9f3cf44f91
3 changed files with 26 additions and 21 deletions
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19
beziers.scad
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@@ -809,11 +809,20 @@ function is_patch(x) = is_tripatch(x) || is_rectpatch(x);
// ];
// vnf_polyhedron(concat(edges,corners,faces));
function bezier_patch(patch, splinesteps=16, vnf=EMPTY_VNF) =
assert(is_num(splinesteps)||is_list(splinesteps))
is_tripatch(patch)? _bezier_triangle(patch, splinesteps=splinesteps, vnf=vnf) :
assert(is_num(splinesteps) || is_vector(splinesteps,2))
is_tripatch(patch) ? _bezier_triangle(patch, splinesteps=splinesteps, vnf=vnf) :
let(
splinesteps = is_list(splinesteps)? splinesteps : [splinesteps, splinesteps],
pts = [for (v=[0:1:splinesteps.y], u=[0:1:splinesteps.x]) bezier_patch_point(patch, u/splinesteps.x, v/splinesteps.y)],
splinesteps = is_list(splinesteps) ? splinesteps : [splinesteps,splinesteps],
bpatch = [
for(step=[0:1:splinesteps.x]) [
for(patchline=patch)
bez_point(patchline, step/splinesteps.x)
]
],
pts = [
for(step=[0:1:splinesteps.y], bezparm=bpatch)
bez_point(bezparm, step/splinesteps.y)
],
faces = [
for (
v=[0:1:splinesteps.y-1],
@@ -825,7 +834,7 @@ function bezier_patch(patch, splinesteps=16, vnf=EMPTY_VNF) =
v4 = v3 + 1
) each [[v1,v3,v2], [v2,v3,v4]]
]
) vnf_merge([vnf, [pts, faces]]);
) vnf_merge([vnf, [pts, faces]]);
function _tri_count(n) = (n*(1+n))/2;