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allow count to take a list as input

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vnf_wireframe does not draw unreferenced vertices
some error checking
This commit is contained in:
Adrian Mariano
2021-10-14 18:29:52 -04:00
parent 320867ac7a
commit acb65b3298
5 changed files with 16 additions and 8 deletions
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6
vnf.scad
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@@ -587,7 +587,9 @@ module vnf_wireframe(vnf, width=1)
sort([face[i], select(face,i+1)])
]);
for (e=edges) extrude_from_to(vertex[e[0]],vertex[e[1]]) circle(d=width);
move_copies(vertex) sphere(d=width);
// Identify vertices actually used and draw them
vertused = search(count(len(vertex)), flatten(edges), 1);
for(i=idx(vertex)) if(vertused[i]!=[]) move(vertex[i]) sphere(d=width);
}
@@ -687,6 +689,8 @@ function vnf_centroid(vnf) =
// cut_knot = vnf_halfspace([1,0,0,0], knot);
// vnf_polyhedron(cut_knot);
function vnf_halfspace(plane, vnf, closed=true) =
assert(_valid_plane(plane), "Invalid plane")
assert(is_vnf(vnf), "Invalid vnf")
let(
inside = [for(x=vnf[0]) plane*[each x,-1] >= 0 ? 1 : 0],
vertexmap = [0,each cumsum(inside)],