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Added EMPTY_VNF

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Revar Desmera
2020-03-09 18:35:14 -07:00
parent 37392e1376
commit 2551f19939
3 changed files with 14 additions and 11 deletions
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8
beziers.scad
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@@ -808,7 +808,7 @@ function is_patch(x) = is_tripatch(x) || is_rectpatch(x);
// )
// ];
// vnf_polyhedron(concat(edges,corners,faces));
function bezier_patch(patch, splinesteps=16, vnf=[[],[]]) =
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) :
let(
@@ -831,7 +831,7 @@ function bezier_patch(patch, splinesteps=16, vnf=[[],[]]) =
function _tri_count(n) = (n*(1+n))/2;
function _bezier_triangle(tri, splinesteps=16, vnf=[[],[]]) =
function _bezier_triangle(tri, splinesteps=16, vnf=EMPTY_VNF) =
assert(is_num(splinesteps))
let(
pts = [
@@ -923,7 +923,7 @@ function patch_reverse(patch) = [for (row=patch) reverse(row)];
// ];
// vnf = bezier_surface(patches=[patch1, patch2], splinesteps=16);
// polyhedron(points=vnf[0], faces=vnf[1]);
function bezier_surface(patches=[], splinesteps=16, vnf=[[],[]], i=0) =
function bezier_surface(patches=[], splinesteps=16, vnf=EMPTY_VNF, i=0) =
let(
vnf = (i >= len(patches))? vnf :
bezier_patch(patches[i], splinesteps=splinesteps, vnf=vnf)
@@ -958,7 +958,7 @@ function bezier_surface(patches=[], splinesteps=16, vnf=[[],[]], i=0) =
// [[18,82,0], [33,100, 0], [ 67,100, 0], [ 82, 82,0]],
// ];
// bezier_polyhedron([patch1, patch2], splinesteps=8);
module bezier_polyhedron(patches=[], splinesteps=16, vnf=[[],[]])
module bezier_polyhedron(patches=[], splinesteps=16, vnf=EMPTY_VNF)
{
vnf_polyhedron(
bezier_surface(patches=patches, splinesteps=splinesteps, vnf=vnf)