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Code Issues Releases Wiki Activity

refactor

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This commit is contained in:
Justin Lin
2021-07-10 09:39:28 +08:00
parent 90831fb216
commit 3ea7909853
3 changed files with 8 additions and 9 deletions
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3
src/__comm__/_face_normal.scad Normal file
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@@ -0,0 +1,3 @@
function _face_normal(points) =
let(v = cross(points[2] - points[0], points[1] - points[0])) v / norm(v);

6
src/__comm__/_vertex_normals.scad
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@@ -1,4 +1,5 @@
use <_face_normal.scad>;
use <../util/slice.scad>; use <../util/slice.scad>;
use <../util/sort.scad>; use <../util/sort.scad>;
use <../util/find_index.scad>; use <../util/find_index.scad>;
@@ -24,9 +25,6 @@ function _connected_faces(faces, leng, leng_pts, cnt_faces, i = 0) =
) )
_connected_faces(faces, leng, leng_pts, n_cnt_faces, i + 1); _connected_faces(faces, leng, leng_pts, n_cnt_faces, i + 1);
function face_normal(points) =
let(v = cross(points[2] - points[0], points[1] - points[0])) v / norm(v);
function _vertex_normals(points, faces) = function _vertex_normals(points, faces) =
let( let(
leng_pts = len(points), leng_pts = len(points),
@@ -37,7 +35,7 @@ function _vertex_normals(points, faces) =
let( let(
face_normals = [ face_normals = [
for(face = cnn_faces[i]) for(face = cnn_faces[i])
face_normal([for(i = face) points[i]]) _face_normal([for(i = face) points[i]])
] ]
) )
sum(face_normals) / len(face_normals) sum(face_normals) / len(face_normals)

8
src/surface/sf_thickenT.scad
View File

@@ -8,6 +8,7 @@
* *
**/ **/
use <../__comm__/_face_normal.scad>;
use <../util/sort.scad>; use <../util/sort.scad>;
use <../util/find_index.scad>; use <../util/find_index.scad>;
use <../util/sum.scad>; use <../util/sum.scad>;
@@ -40,9 +41,6 @@ module sf_thickenT(points, thickness, triangles = undef, direction = "BOTH") {
) )
_connected_tris(triangles, leng, leng_pts, n_cnt_tris, i + 1); _connected_tris(triangles, leng, leng_pts, n_cnt_tris, i + 1);
function tri_normal(tri) =
let(v = cross(tri[2] - tri[0], tri[1] - tri[0])) v / norm(v);
leng_pts = len(points); leng_pts = len(points);
cnn_tris = connected_tris(leng_pts, tris); cnn_tris = connected_tris(leng_pts, tris);
@@ -50,7 +48,7 @@ module sf_thickenT(points, thickness, triangles = undef, direction = "BOTH") {
dir_v = direction / norm(direction); dir_v = direction / norm(direction);
mid = sort(points)[leng_pts / 2]; mid = sort(points)[leng_pts / 2];
tri = cnn_tris[find_index(points, function(p) p == mid)][0]; tri = cnn_tris[find_index(points, function(p) p == mid)][0];
nv = tri_normal([points[tri[0]], points[tri[1]], points[tri[2]]]); nv = _face_normal([points[tri[0]], points[tri[1]], points[tri[2]]]);
pts = [for(p = points) p + dir_v * thickness]; pts = [for(p = points) p + dir_v * thickness];
if(nv * dir_v > 0) { if(nv * dir_v > 0) {
@@ -66,7 +64,7 @@ module sf_thickenT(points, thickness, triangles = undef, direction = "BOTH") {
let( let(
normals = [ normals = [
for(tri = cnn_tris[i]) for(tri = cnn_tris[i])
tri_normal([ _face_normal([
points[tri[0]], points[tri[0]],
points[tri[1]], points[tri[1]],
points[tri[2]]] points[tri[2]]]