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FBX IO: Vertex position access with attributes #104647

Merged
Bastien Montagne merged 1 commits from Mysteryem/blender-addons:attribute_access_positions_pr into main 2023-06-26 17:42:49 +02:00
Conversation 2 Commits 1 Files Changed 2 +15 -22
2 changed files with 15 additions and 22 deletions
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14
io_scene_fbx/export_fbx_bin.py
View File

@ -894,12 +894,10 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
attributes = me.attributes
# Vertex cos.
co_bl_dtype = np.single
co_fbx_dtype = np.float64
t_co = np.empty(len(me.vertices) * 3, dtype=co_bl_dtype)
me.vertices.foreach_get("co", t_co)
elem_data_single_float64_array(geom, b"Vertices", vcos_transformed(t_co, geom_mat_co, co_fbx_dtype))
del t_co
pos_fbx_dtype = np.float64
t_pos = MESH_ATTRIBUTE_POSITION.to_ndarray(attributes)
elem_data_single_float64_array(geom, b"Vertices", vcos_transformed(t_pos, geom_mat_co, pos_fbx_dtype))
del t_pos
# Polygon indices.
#
@ -2662,10 +2660,10 @@ def fbx_data_from_scene(scene, depsgraph, settings):
# Get and cache only the cos that we need
@cache
def sk_cos(shape_key):
_cos = np.empty(len(me.vertices) * 3, dtype=co_bl_dtype)
if shape_key == sk_base:
me.vertices.foreach_get("co", _cos)
_cos = MESH_ATTRIBUTE_POSITION.to_ndarray(me.attributes)
else:
_cos = np.empty(len(me.vertices) * 3, dtype=co_bl_dtype)
shape_key.data.foreach_get("co", _cos)
return vcos_transformed(_cos, geom_mat_co, co_fbx_dtype)

23
io_scene_fbx/import_fbx.py
View File

@ -1452,8 +1452,6 @@ def blen_read_geom(fbx_tmpl, fbx_obj, settings):
fbx_polys = elem_prop_first(elem_find_first(fbx_obj, b'PolygonVertexIndex'))
fbx_edges = elem_prop_first(elem_find_first(fbx_obj, b'Edges'))
bl_vcos_dtype = np.single
# The dtypes when empty don't matter, but are set to what the fbx arrays are expected to be.
fbx_verts = parray_as_ndarray(fbx_verts) if fbx_verts else np.empty(0, dtype=data_types.ARRAY_FLOAT64)
fbx_polys = parray_as_ndarray(fbx_polys) if fbx_polys else np.empty(0, dtype=data_types.ARRAY_INT32)
@ -1474,12 +1472,12 @@ def blen_read_geom(fbx_tmpl, fbx_obj, settings):
if tot_verts:
if geom_mat_co is not None:
fbx_verts = vcos_transformed(fbx_verts, geom_mat_co, bl_vcos_dtype)
fbx_verts = vcos_transformed(fbx_verts, geom_mat_co, MESH_ATTRIBUTE_POSITION.dtype)
else:
fbx_verts = fbx_verts.astype(bl_vcos_dtype, copy=False)
fbx_verts = fbx_verts.astype(MESH_ATTRIBUTE_POSITION.dtype, copy=False)
mesh.vertices.add(tot_verts)
mesh.vertices.foreach_set("co", fbx_verts.ravel())
MESH_ATTRIBUTE_POSITION.foreach_set(attributes, fbx_verts.ravel())
if tot_loops:
bl_loop_start_dtype = bl_loop_vertex_index_dtype = np.uintc
@ -1596,9 +1594,7 @@ def blen_read_shapes(fbx_tmpl, fbx_data, objects, me, scene):
# No shape key data. Nothing to do.
return
bl_vcos_dtype = np.single
me_vcos = np.empty(len(me.vertices) * 3, dtype=bl_vcos_dtype)
me.vertices.foreach_get("co", me_vcos)
me_vcos = MESH_ATTRIBUTE_POSITION.to_ndarray(me.attributes)
me_vcos_vector_view = me_vcos.reshape(-1, 3)
objects = list({node.bl_obj for node in objects})
@ -3530,19 +3526,18 @@ def load(operator, context, filepath="",
if fbx_obj.props[-1] == b'Mesh':
mesh = fbx_item[1]
if decal_offset != 0.0:
num_verts = len(mesh.vertices)
if decal_offset != 0.0 and num_verts > 0:
for material in mesh.materials:
if material in material_decals:
num_verts = len(mesh.vertices)
blen_cos_dtype = blen_norm_dtype = np.single
vcos = np.empty(num_verts * 3, dtype=blen_cos_dtype)
blen_norm_dtype = np.single
vcos = MESH_ATTRIBUTE_POSITION.to_ndarray(mesh.attributes)
vnorm = np.empty(num_verts * 3, dtype=blen_norm_dtype)
mesh.vertices.foreach_get("co", vcos)
mesh.vertex_normals.foreach_get("vector", vnorm)
vcos += vnorm * decal_offset
mesh.vertices.foreach_set("co", vcos)
MESH_ATTRIBUTE_POSITION.foreach_set(mesh.attributes, vcos)
break
for obj in (obj for obj in bpy.data.objects if obj.data == mesh):