[Bf-extensions-cvs] [8d24537a] master: gltf exporter: new feature: export 'Loose Points' and 'Loose Edges'
Julien Duroure
noreply at git.blender.org
Thu Feb 25 19:09:45 CET 2021
Commit: 8d24537a6e9c6e39f7d18d1bf3f4d162a85edd11
Author: Julien Duroure
Date: Thu Feb 25 19:08:53 2021 +0100
Branches: master
https://developer.blender.org/rBA8d24537a6e9c6e39f7d18d1bf3f4d162a85edd11
gltf exporter: new feature: export 'Loose Points' and 'Loose Edges'
===================================================================
M io_scene_gltf2/__init__.py
M io_scene_gltf2/blender/exp/gltf2_blender_extract.py
M io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives.py
M io_scene_gltf2/io/exp/gltf2_io_draco_compression_extension.py
===================================================================
diff --git a/io_scene_gltf2/__init__.py b/io_scene_gltf2/__init__.py
index 8d3ac965..352affa3 100755
--- a/io_scene_gltf2/__init__.py
+++ b/io_scene_gltf2/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2018-2019 The glTF-Blender-IO authors.
+# Copyright 2018-2021 The glTF-Blender-IO authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
bl_info = {
'name': 'glTF 2.0 format',
'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
- "version": (1, 6, 4),
+ "version": (1, 6, 5),
'blender': (2, 91, 0),
'location': 'File > Import-Export',
'description': 'Import-Export as glTF 2.0',
@@ -263,6 +263,22 @@ class ExportGLTF2_Base:
default=True
)
+ use_mesh_edges: BoolProperty(
+ name='Loose Edges',
+ description=(
+ 'Export loose edges as lines, using the material from the first material slot'
+ ),
+ default=False,
+ )
+
+ use_mesh_vertices: BoolProperty(
+ name='Loose Points',
+ description=(
+ 'Export loose points as glTF points, using the material from the first material slot'
+ ),
+ default=False,
+ )
+
export_cameras: BoolProperty(
name='Cameras',
description='Export cameras',
@@ -444,10 +460,18 @@ class ExportGLTF2_Base:
return ExportHelper.invoke(self, context, event)
def save_settings(self, context):
- # find all export_ props
+ # find all props to save
+ exceptional = [
+ # options that don't start with 'export_'
+ 'use_selection',
+ 'use_mesh_edges',
+ 'use_mesh_vertices',
+ ]
all_props = self.properties
- export_props = {x: getattr(self, x) for x in dir(all_props)
- if (x.startswith("export_") or x == "use_selection") and all_props.get(x) is not None}
+ export_props = {
+ x: getattr(self, x) for x in dir(all_props)
+ if (x.startswith("export_") or x in exceptional) and all_props.get(x) is not None
+ }
context.scene[self.scene_key] = export_props
@@ -479,6 +503,8 @@ class ExportGLTF2_Base:
export_settings['gltf_texcoords'] = self.export_texcoords
export_settings['gltf_normals'] = self.export_normals
export_settings['gltf_tangents'] = self.export_tangents and self.export_normals
+ export_settings['gltf_loose_edges'] = self.use_mesh_edges
+ export_settings['gltf_loose_points'] = self.use_mesh_vertices
if self.is_draco_available:
export_settings['gltf_draco_mesh_compression'] = self.export_draco_mesh_compression_enable
@@ -692,6 +718,11 @@ class GLTF_PT_export_geometry(bpy.types.Panel):
col.active = operator.export_normals
col.prop(operator, 'export_tangents')
layout.prop(operator, 'export_colors')
+
+ col = layout.column()
+ col.prop(operator, 'use_mesh_edges')
+ col.prop(operator, 'use_mesh_vertices')
+
layout.prop(operator, 'export_materials')
col = layout.column()
col.active = operator.export_materials == "EXPORT"
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_extract.py b/io_scene_gltf2/blender/exp/gltf2_blender_extract.py
index 5a78ab04..0492c901 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_extract.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_extract.py
@@ -1,4 +1,4 @@
-# Copyright 2018-2019 The glTF-Blender-IO authors.
+# Copyright 2018-2021 The glTF-Blender-IO authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -283,6 +283,90 @@ def extract_primitives(glTF, blender_mesh, library, blender_object, blender_vert
'material': material_idx,
})
+ if export_settings['gltf_loose_edges']:
+ # Find loose edges
+ loose_edges = [e for e in blender_mesh.edges if e.is_loose]
+ blender_idxs = [vi for e in loose_edges for vi in e.vertices]
+
+ if blender_idxs:
+ # Export one glTF vert per unique Blender vert in a loose edge
+ blender_idxs = np.array(blender_idxs, dtype=np.uint32)
+ blender_idxs, indices = np.unique(blender_idxs, return_inverse=True)
+
+ attributes = {}
+
+ attributes['POSITION'] = locs[blender_idxs]
+
+ for morph_i, vs in enumerate(morph_locs):
+ attributes['MORPH_POSITION_%d' % morph_i] = vs[blender_idxs]
+
+ if skin:
+ joints = [[] for _ in range(num_joint_sets)]
+ weights = [[] for _ in range(num_joint_sets)]
+
+ for vi in blender_idxs:
+ bones = vert_bones[vi]
+ for j in range(0, 4 * num_joint_sets):
+ if j < len(bones):
+ joint, weight = bones[j]
+ else:
+ joint, weight = 0, 0.0
+ joints[j//4].append(joint)
+ weights[j//4].append(weight)
+
+ for i, (js, ws) in enumerate(zip(joints, weights)):
+ attributes['JOINTS_%d' % i] = js
+ attributes['WEIGHTS_%d' % i] = ws
+
+ primitives.append({
+ 'attributes': attributes,
+ 'indices': indices,
+ 'mode': 1, # LINES
+ 'material': 0,
+ })
+
+ if export_settings['gltf_loose_points']:
+ # Find loose points
+ verts_in_edge = set(vi for e in blender_mesh.edges for vi in e.vertices)
+ blender_idxs = [
+ vi for vi, _ in enumerate(blender_mesh.vertices)
+ if vi not in verts_in_edge
+ ]
+
+ if blender_idxs:
+ blender_idxs = np.array(blender_idxs, dtype=np.uint32)
+
+ attributes = {}
+
+ attributes['POSITION'] = locs[blender_idxs]
+
+ for morph_i, vs in enumerate(morph_locs):
+ attributes['MORPH_POSITION_%d' % morph_i] = vs[blender_idxs]
+
+ if skin:
+ joints = [[] for _ in range(num_joint_sets)]
+ weights = [[] for _ in range(num_joint_sets)]
+
+ for vi in blender_idxs:
+ bones = vert_bones[vi]
+ for j in range(0, 4 * num_joint_sets):
+ if j < len(bones):
+ joint, weight = bones[j]
+ else:
+ joint, weight = 0, 0.0
+ joints[j//4].append(joint)
+ weights[j//4].append(weight)
+
+ for i, (js, ws) in enumerate(zip(joints, weights)):
+ attributes['JOINTS_%d' % i] = js
+ attributes['WEIGHTS_%d' % i] = ws
+
+ primitives.append({
+ 'attributes': attributes,
+ 'mode': 0, # POINTS
+ 'material': 0,
+ })
+
print_console('INFO', 'Primitives created: %d' % len(primitives))
return primitives
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives.py
index 8678db83..9f9b949a 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives.py
@@ -1,4 +1,4 @@
-# Copyright 2018-2019 The glTF-Blender-IO authors.
+# Copyright 2018-2021 The glTF-Blender-IO authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -54,7 +54,7 @@ def gather_primitives(
material_idx = internal_primitive['material']
material = None
- if export_settings['gltf_materials'] == "EXPORT":
+ if export_settings['gltf_materials'] == "EXPORT" and material_idx is not None:
blender_material = None
if material_names:
i = material_idx if material_idx < len(material_names) else -1
@@ -73,7 +73,7 @@ def gather_primitives(
extras=None,
indices=internal_primitive['indices'],
material=material,
- mode=None,
+ mode=internal_primitive['mode'],
targets=internal_primitive['targets']
)
primitives.append(primitive)
@@ -101,7 +101,8 @@ def __gather_cache_primitives(
primitive = {
"attributes": __gather_attributes(internal_primitive, blender_mesh, modifiers, export_settings),
"indices": __gather_indices(internal_primitive, blender_mesh, modifiers, export_settings),
- "material": internal_primitive['material'],
+ "mode": internal_primitive.get('mode'),
+ "material": internal_primitive.get('material'),
"targets": __gather_targets(internal_primitive, blender_mesh, modifiers, export_settings)
}
primitives.append(primitive)
@@ -109,7 +110,9 @@ def __gather_cache_primitives(
return primitives
def __gather_indices(blender_primitive, blender_mesh, modifiers, export_settings):
- indices = blender_primitive['indices']
+ indices = blender_primitive.get('indices')
+ if indices is None:
+ return None
# NOTE: Values used by some graphics APIs as "primitive restart" values are disallowed.
# Specifically, the values 65535 (in UINT16) and 4294967295 (in UINT32) cannot be used as indices.
diff --git a/io_scene_gltf2/io/exp/gltf2_io_draco_compression_extension.py b/io_scene_gltf2/io/exp/gltf2_io_draco_compression_extension.py
index 0c6bfaf4..74dbfa03 100644
--- a/io_scene_gltf2/io/exp/gltf2_io_draco_compression_extension.py
+++ b/io_scene_gltf2/io/exp/gltf2_io_draco_compression_extension.py
@@ -1,4 +1,4 @@
-# Copyright 2018-2019 The glTF-Blender-IO authors.
+# Copyright 2018-2021 The glTF-Blender-IO authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you m
@@ Diff output truncated at 10240 characters. @@
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