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refactor

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Justin Lin
2022-05-13 08:59:54 +08:00
parent 038429ede7
commit 663c43f70e
1 changed files with 10 additions and 17 deletions
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27
src/__comm__/_vertex_normals.scad
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@@ -1,32 +1,25 @@
use <_face_normal.scad>; use <_face_normal.scad>;
use <../util/sum.scad>; use <../util/sum.scad>;
use <../util/contains.scad>;
function connected_faces(leng_pts, faces) =
let(cnt_faces = [for(i = [0:leng_pts - 1]) []])
_connected_faces(faces, len(faces), leng_pts, cnt_faces);
function _connected_faces(faces, leng, leng_pts, cnt_faces, i = 0) =
i == leng ? cnt_faces :
let(
n_cnt_faces = [
for(k = [0:leng_pts - 1])
search([k], faces[i])[0] != [] ? [each cnt_faces[k], faces[i]] : cnt_faces[k]
]
)
_connected_faces(faces, leng, leng_pts, n_cnt_faces, i + 1);
function _vertex_normals(points, faces) = function _vertex_normals(points, faces) =
let( let(
leng_pts = len(points), leng_pts = len(points),
cnn_faces = connected_faces(leng_pts, faces) range = [0:leng_pts - 1],
cnn_indices_faces = [
for(face = faces, i = range)
if(contains(face, i)) [i, face]
]
) )
[ [
for(i = [0:leng_pts - 1]) for(i = [0:leng_pts - 1])
let( let(
indices = search(i, cnn_indices_faces, num_returns_per_match = 0),
connected_faces = [for(j = indices) cnn_indices_faces[j][1]],
face_normals = [ face_normals = [
for(face = cnn_faces[i]) for(face = connected_faces)
_face_normal([for(i = face) points[i]]) _face_normal([for(k = face) points[k]])
] ]
) )
sum(face_normals) / len(face_normals) sum(face_normals) / len(face_normals)