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Eradicated admesh from TriangleMesh:

Browse source 
TriangleMesh newly only holds indexed_triangle_set and
TriangleMeshStats. TriangleMeshStats contains an excerpt of stl_stats.
TriangleMeshStats are updated when initializing with indexed_triangle_set.

Admesh triangle mesh fixing is newly only used when loading an STL.
AMF / 3MF / OBJ file formats are already indexed triangle sets, thus
they are no more converted to admesh stl_file format, nor fixed
through admesh repair machinery. When importing AMF / 3MF / OBJ files,
volume is calculated and if negative, all faces are flipped. Also
a bounding box and number of open edges is calculated.

Implemented its_number_of_patches(), its_num_open_edges()
Optimized its_split(), its_is_splittable() using a visitor pattern.

Reworked QHull integration into TriangleMesh:
    1) Face normals were not right.
    2) Indexed triangle set is newly emitted instead of duplicating
       vertices for each face.

Fixed cut_mesh(): Orient the triangulated faces correctly.
This commit is contained in:
Vojtech Bubnik 2021-09-20 17:12:22 +02:00
parent f484953a5a
commit 8a2a9dba2f
59 changed files with 1056 additions and 1758 deletions
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11
src/admesh/stl_io.cpp
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@ -205,11 +205,12 @@ bool stl_write_quad_object(stl_file *stl, char *file)
fprintf(fp, "CQUAD\n");
for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
switch (stl->neighbors_start[i].num_neighbors_missing()) {
case 0: color = connect_color; break;
case 1: color = uncon_1_color; break;
case 2: color = uncon_2_color; break;
default: color = uncon_3_color;
switch (stl->neighbors_start[i].num_neighbors()) {
case 0:
default: color = uncon_3_color; break;
case 1: color = uncon_2_color; break;
case 2: color = uncon_1_color; break;
case 3: color = connect_color; break;
}
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2), color(0), color(1), color(2));
fprintf(fp, "%f %f %f %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2), color(0), color(1), color(2));