diff options
Diffstat (limited to 'io_scene_gltf2/blender')
| -rwxr-xr-x | io_scene_gltf2/blender/imp/gltf2_blender_mesh.py | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py b/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py index 2d3abb6c..1f7f7b66 100755 --- a/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py +++ b/io_scene_gltf2/blender/imp/gltf2_blender_mesh.py @@ -145,26 +145,17 @@ class BlenderMesh(): for fi in range(face_idx, face_idx + prim.num_faces): mesh.polygons[fi].use_smooth = True elif gltf.import_settings['import_shading'] == "NORMALS": + mesh_loops = mesh.loops for fi in range(face_idx, face_idx + prim.num_faces): poly = mesh.polygons[fi] - calc_norm_vertices = [] + # "Flat normals" are when all the vertices in poly have the + # poly's normal. Otherwise, smooth the poly. for loop_idx in range(poly.loop_start, poly.loop_start + poly.loop_total): - vert_idx = mesh.loops[loop_idx].vertex_index - calc_norm_vertices.append(vert_idx) - - if len(calc_norm_vertices) == 3: - # Calcul normal - vert0 = mesh.vertices[calc_norm_vertices[0]].co - vert1 = mesh.vertices[calc_norm_vertices[1]].co - vert2 = mesh.vertices[calc_norm_vertices[2]].co - calc_normal = (vert1 - vert0).cross(vert2 - vert0).normalized() - - # Compare normal to vertex normal - for i in calc_norm_vertices: - vec = Vector(bme.verts[i].normal) - if not calc_normal.dot(vec) > 0.9999999: - poly.use_smooth = True - break + vi = mesh_loops[loop_idx].vertex_index + if poly.normal.dot(bme.verts[vi].normal) <= 0.9999999: + poly.use_smooth = True + break + else: # shouldn't happen pass |