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bugfix "Export UV Layout" stalls when saving file in 2.55b

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remove duplicate UVs on export to avoid long ztransp filling times - common on faces which have no assigned UV coords.
This commit is contained in:
Campbell Barton
2010-11-28 13:39:39 +00:00
parent 2840d524e0
commit 6b4e7e8def
1 changed files with 27 additions and 15 deletions
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42
release/scripts/op/uv.py
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@@ -126,27 +126,39 @@ def write_png(fw, mesh_source, image_width, image_height, face_iter):
for f in mesh_source.faces:
tot_verts += len(f.vertices)
faces_source = mesh_source.faces
# get unique UV's incase there are many overlapping which slow down filling.
face_hash_3 = set()
face_hash_4 = set()
for i, uv in face_iter:
material_index = faces_source[i].material_index
if len(uv) == 3:
face_hash_3.add((uv[0][0], uv[0][1], uv[1][0], uv[1][1], uv[2][0], uv[2][1], material_index))
else:
face_hash_4.add((uv[0][0], uv[0][1], uv[1][0], uv[1][1], uv[2][0], uv[2][1], uv[3][0], uv[3][1], material_index))
# now set the faces coords and locations
# build mesh data
mesh_new_vertices = []
mesh_new_materials = []
mesh_new_face_vertices = []
current_vert = 0
faces_source = mesh_source.faces
for i, uv in face_iter:
if len(uv) == 3:
mesh_new_vertices.extend([uv[0][0], uv[0][1], 0.0, uv[1][0], uv[1][1], 0.0, uv[2][0], uv[2][1], 0.0])
mesh_new_face_vertices.extend([current_vert, current_vert + 1, current_vert + 2, 0])
current_vert += 3
else:
mesh_new_vertices.extend([uv[0][0], uv[0][1], 0.0, uv[1][0], uv[1][1], 0.0, uv[2][0], uv[2][1], 0.0, uv[3][0], uv[3][1], 0.0])
mesh_new_face_vertices.extend([current_vert, current_vert + 1, current_vert + 2, current_vert + 3])
current_vert += 4
mesh_new_materials.append(faces_source[i].material_index)
current_vert = 0
for face_data in face_hash_3:
mesh_new_vertices.extend([face_data[0], face_data[1], 0.0, face_data[2], face_data[3], 0.0, face_data[4], face_data[5], 0.0])
mesh_new_face_vertices.extend([current_vert, current_vert + 1, current_vert + 2, 0])
mesh_new_materials.append(face_data[6])
current_vert += 3
for face_data in face_hash_4:
mesh_new_vertices.extend([face_data[0], face_data[1], 0.0, face_data[2], face_data[3], 0.0, face_data[4], face_data[5], 0.0, face_data[6], face_data[7], 0.0])
mesh_new_face_vertices.extend([current_vert, current_vert + 1, current_vert + 2, current_vert + 3])
mesh_new_materials.append(face_data[8])
current_vert += 4
mesh.vertices.add(len(mesh_new_vertices) // 3)
mesh.faces.add(len(mesh_new_face_vertices) // 4)