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Fix T68967: Export to .fbx error. 

Handle more gracefully the case where we cannot compute tangent space
for a mesh.
This commit is contained in:
Bastien Montagne 2019-08-21 15:14:03 +02:00
parent 1faadc1aeb
commit 346320d012
Notes: blender-bot 2023-02-14 19:08:54 +01:00 
Referenced by issue #68967, Export to .fbx error
2 changed files with 46 additions and 35 deletions
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2
io_scene_fbx/__init__.py
View File

@ -21,7 +21,7 @@
bl_info = {
"name": "FBX format",
"author": "Campbell Barton, Bastien Montagne, Jens Restemeier",
"version": (4, 14, 14),
"version": (4, 14, 15),
"blender": (2, 80, 0),
"location": "File > Import-Export",
"description": "FBX IO meshes, UV's, vertex colors, materials, textures, cameras, lamps and actions",

79
io_scene_fbx/export_fbx_bin.py
View File

@ -1032,42 +1032,53 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
if scene_data.settings.use_tspace:
tspacenumber = len(me.uv_layers)
if tspacenumber:
t_ln = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops) * 3
# t_lnw = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops)
uv_names = [uvlayer.name for uvlayer in me.uv_layers]
for name in uv_names:
me.calc_tangents(uvmap=name)
for idx, uvlayer in enumerate(me.uv_layers):
name = uvlayer.name
# Loop bitangents (aka binormals).
# NOTE: this is not supported by importer currently.
me.loops.foreach_get("bitangent", t_ln)
lay_nor = elem_data_single_int32(geom, b"LayerElementBinormal", idx)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_BINORMAL_VERSION)
elem_data_single_string_unicode(lay_nor, b"Name", name)
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Binormals",
chain(*nors_transformed_gen(t_ln, geom_mat_no)))
# Binormal weights, no idea what it is.
# elem_data_single_float64_array(lay_nor, b"BinormalsW", t_lnw)
# We can only compute tspace on tesellated meshes, need to check that here...
t_lt = [None] * len(me.polygons)
me.polygons.foreach_get("loop_total", t_lt)
if any((lt > 4 for lt in t_lt)):
del t_lt
scene_data.settings.report(
{'WARNING'},
"Mesh '%s' has polygons with more than 4 vertices, "
"cannot compute/export tangent space for it" % me.name)
else:
del t_lt
t_ln = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops) * 3
# t_lnw = array.array(data_types.ARRAY_FLOAT64, (0.0,)) * len(me.loops)
uv_names = [uvlayer.name for uvlayer in me.uv_layers]
for name in uv_names:
me.calc_tangents(uvmap=name)
for idx, uvlayer in enumerate(me.uv_layers):
name = uvlayer.name
# Loop bitangents (aka binormals).
# NOTE: this is not supported by importer currently.
me.loops.foreach_get("bitangent", t_ln)
lay_nor = elem_data_single_int32(geom, b"LayerElementBinormal", idx)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_BINORMAL_VERSION)
elem_data_single_string_unicode(lay_nor, b"Name", name)
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Binormals",
chain(*nors_transformed_gen(t_ln, geom_mat_no)))
# Binormal weights, no idea what it is.
# elem_data_single_float64_array(lay_nor, b"BinormalsW", t_lnw)
# Loop tangents.
# NOTE: this is not supported by importer currently.
me.loops.foreach_get("tangent", t_ln)
lay_nor = elem_data_single_int32(geom, b"LayerElementTangent", idx)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_TANGENT_VERSION)
elem_data_single_string_unicode(lay_nor, b"Name", name)
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Tangents",
chain(*nors_transformed_gen(t_ln, geom_mat_no)))
# Tangent weights, no idea what it is.
# elem_data_single_float64_array(lay_nor, b"TangentsW", t_lnw)
# Loop tangents.
# NOTE: this is not supported by importer currently.
me.loops.foreach_get("tangent", t_ln)
lay_nor = elem_data_single_int32(geom, b"LayerElementTangent", idx)
elem_data_single_int32(lay_nor, b"Version", FBX_GEOMETRY_TANGENT_VERSION)
elem_data_single_string_unicode(lay_nor, b"Name", name)
elem_data_single_string(lay_nor, b"MappingInformationType", b"ByPolygonVertex")
elem_data_single_string(lay_nor, b"ReferenceInformationType", b"Direct")
elem_data_single_float64_array(lay_nor, b"Tangents",
chain(*nors_transformed_gen(t_ln, geom_mat_no)))
# Tangent weights, no idea what it is.
# elem_data_single_float64_array(lay_nor, b"TangentsW", t_lnw)
del t_ln
# del t_lnw
me.free_tangents()
del t_ln
# del t_lnw
me.free_tangents()
me.free_normals_split()