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glTF exporter: use mesh.loop_triangles 

Thanks scurest!
This commit is contained in:
Julien Duroure 2020-07-21 20:24:03 +02:00
parent bb4dc6f1da
commit bd8e1f3e57
2 changed files with 7 additions and 25 deletions
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2
io_scene_gltf2/__init__.py
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@ -15,7 +15,7 @@
bl_info = {
'name': 'glTF 2.0 format',
'author': 'Julien Duroure, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
"version": (1, 3, 35),
"version": (1, 3, 36),
'blender': (2, 90, 0),
'location': 'File > Import-Export',
'description': 'Import-Export as glTF 2.0',

30
io_scene_gltf2/blender/exp/gltf2_blender_extract.py
View File

@ -17,7 +17,6 @@
#
from mathutils import Vector, Quaternion, Matrix
from mathutils.geometry import tessellate_polygon
from . import gltf2_blender_export_keys
from ...io.com.gltf2_io_debug import print_console
@ -232,7 +231,11 @@ def extract_primitives(glTF, blender_mesh, library, blender_object, blender_vert
prims = {}
for blender_polygon in blender_mesh.polygons:
blender_mesh.calc_loop_triangles()
for loop_tri in blender_mesh.loop_triangles:
blender_polygon = blender_mesh.polygons[loop_tri.polygon_index]
material_idx = -1
if use_materials:
material_idx = blender_polygon.material_index
@ -257,28 +260,7 @@ def extract_primitives(glTF, blender_mesh, library, blender_object, blender_vert
face_tangent.normalize()
face_bitangent.normalize()
loop_index_list = []
if len(blender_polygon.loop_indices) == 3:
loop_index_list.extend(blender_polygon.loop_indices)
elif len(blender_polygon.loop_indices) > 3:
# Triangulation of polygon. Using internal function, as non-convex polygons could exist.
polyline = []
for loop_index in blender_polygon.loop_indices:
vertex_index = blender_mesh.loops[loop_index].vertex_index
v = blender_mesh.vertices[vertex_index].co
polyline.append(Vector((v[0], v[1], v[2])))
triangles = tessellate_polygon((polyline,))
for triangle in triangles:
for triangle_index in triangle:
loop_index_list.append(blender_polygon.loop_indices[triangle_index])
else:
continue
for loop_index in loop_index_list:
for loop_index in loop_tri.loops:
vertex_index = blender_mesh.loops[loop_index].vertex_index
vertex = blender_mesh.vertices[vertex_index]