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more beziers fixes

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Adrian Mariano 2021-10-17 21:21:53 -04:00
parent 80c6e0666d
commit a7ca1b1b64
1 changed files with 13 additions and 11 deletions
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24
beziers.scad
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@ -1157,7 +1157,7 @@ function is_patch(x) =
// ];
// vnf = bezier_patch(tri, splinesteps=16);
// vnf_polyhedron(vnf);
// Example(3D,FlatSpin,VPD=444): Chaining Patches
// Example(3D,FlatSpin,VPD=444): Merging multiple patches
// patch = [
// // u=0,v=0 u=1,v=0
// [[0, 0,0], [33, 0, 0], [67, 0, 0], [100, 0,0]],
@ -1166,13 +1166,15 @@ function is_patch(x) =
// [[0,100,0], [33,100, 0], [67,100, 0], [100,100,0]],
// // u=0,v=1 u=1,v=1
// ];
// vnf1 = bezier_patch(translate(p=patch,[-50,-50,50]));
// vnf2 = bezier_patch(vnf=vnf1, rot(a=[90,0,0],p=translate(p=patch,[-50,-50,50])));
// vnf3 = bezier_patch(vnf=vnf2, rot(a=[-90,0,0],p=translate(p=patch,[-50,-50,50])));
// vnf4 = bezier_patch(vnf=vnf3, rot(a=[180,0,0],p=translate(p=patch,[-50,-50,50])));
// vnf5 = bezier_patch(vnf=vnf4, rot(a=[0,90,0],p=translate(p=patch,[-50,-50,50])));
// vnf6 = bezier_patch(vnf=vnf5, rot(a=[0,-90,0],p=translate(p=patch,[-50,-50,50])));
// vnf_polyhedron(vnf6);
// tpatch = translate([-50,-50,50], patch);
// vnf = vnf_merge([
// bezier_patch(tpatch),
// bezier_patch(xrot(90, tpatch)),
// bezier_patch(xrot(-90, tpatch)),
// bezier_patch(xrot(180, tpatch)),
// bezier_patch(yrot(90, tpatch)),
// bezier_patch(yrot(-90, tpatch))]);
// vnf_polyhedron(vnf);
// Example(3D): Connecting Patches with Asymmetric Splinesteps
// steps = 8;
// edge_patch = [
@ -1225,7 +1227,7 @@ function is_patch(x) =
function bezier_patch(patch, splinesteps=16, style="default") =
assert(is_num(splinesteps) || is_vector(splinesteps,2))
assert(all_positive(splinesteps))
is_tripatch(patch)? _bezier_triangle(patch, splinesteps=splinesteps, vnf=vnf) :
is_tripatch(patch)? _bezier_triangle(patch, splinesteps=splinesteps) :
let(
splinesteps = is_list(splinesteps) ? splinesteps : [splinesteps,splinesteps],
uvals = [
@ -1430,7 +1432,7 @@ function bezier_patch_degenerate(patch, splinesteps=16, reverse=false, return_ed
function _tri_count(n) = (n*(1+n))/2;
function _bezier_triangle(tri, splinesteps=16, vnf=EMPTY_VNF) =
function _bezier_triangle(tri, splinesteps=16) =
assert(is_num(splinesteps))
let(
pts = [
@ -1455,7 +1457,7 @@ function _bezier_triangle(tri, splinesteps=16, vnf=EMPTY_VNF) =
)
) for (face=allfaces) face
]
) vnf_merge([vnf,[pts, faces]]);
) [pts, faces];