Initial commit of glTF 2.0 importer/exporter

Official Khronos Group Blender glTF 2.0 importer and exporter.

glTF specification: https://github.com/KhronosGroup/glTF
The upstream repository can be found here:
https://github.com/KhronosGroup/glTF-Blender-IO

Reviewed By: Bastien, Campbell

Differential Revision: https://developer.blender.org/D3929

1 files changed, 90 insertions, 0 deletions

diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_mesh.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_mesh.py
new file mode 100755
index 00000000..57903287
--- /dev/null
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_mesh.py
@@ -0,0 +1,90 @@
+# Copyright 2018 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.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import bpy
+from typing import Optional, Dict, List, Any
+from io_scene_gltf2.blender.exp.gltf2_blender_gather_cache import cached
+from io_scene_gltf2.io.com import gltf2_io
+from io_scene_gltf2.blender.exp import gltf2_blender_gather_primitives
+
+
+@cached
+def gather_mesh(blender_mesh: bpy.types.Mesh,
+                vertex_groups: Optional[bpy.types.VertexGroups],
+                modifiers: Optional[bpy.types.ObjectModifiers],
+                export_settings
+                ) -> Optional[gltf2_io.Mesh]:
+    if not __filter_mesh(blender_mesh, vertex_groups, modifiers, export_settings):
+        return None
+
+    mesh = gltf2_io.Mesh(
+        extensions=__gather_extensions(blender_mesh, vertex_groups, modifiers, export_settings),
+        extras=__gather_extras(blender_mesh, vertex_groups, modifiers, export_settings),
+        name=__gather_name(blender_mesh, vertex_groups, modifiers, export_settings),
+        primitives=__gather_primitives(blender_mesh, vertex_groups, modifiers, export_settings),
+        weights=__gather_weights(blender_mesh, vertex_groups, modifiers, export_settings)
+    )
+
+    return mesh
+
+
+def __filter_mesh(blender_mesh: bpy.types.Mesh,
+                  vertex_groups: Optional[bpy.types.VertexGroups],
+                  modifiers: Optional[bpy.types.ObjectModifiers],
+                  export_settings
+                  ) -> bool:
+    if blender_mesh.users == 0:
+        return False
+    return True
+
+
+def __gather_extensions(blender_mesh: bpy.types.Mesh,
+                        vertex_groups: Optional[bpy.types.VertexGroups],
+                        modifiers: Optional[bpy.types.ObjectModifiers],
+                        export_settings
+                        ) -> Any:
+    return None
+
+
+def __gather_extras(blender_mesh: bpy.types.Mesh,
+                    vertex_groups: Optional[bpy.types.VertexGroups],
+                    modifiers: Optional[bpy.types.ObjectModifiers],
+                    export_settings
+                    ) -> Optional[Dict[Any, Any]]:
+    return None
+
+
+def __gather_name(blender_mesh: bpy.types.Mesh,
+                  vertex_groups: Optional[bpy.types.VertexGroups],
+                  modifiers: Optional[bpy.types.ObjectModifiers],
+                  export_settings
+                  ) -> str:
+    return blender_mesh.name
+
+
+def __gather_primitives(blender_mesh: bpy.types.Mesh,
+                        vertex_groups: Optional[bpy.types.VertexGroups],
+                        modifiers: Optional[bpy.types.ObjectModifiers],
+                        export_settings
+                        ) -> List[gltf2_io.MeshPrimitive]:
+    return gltf2_blender_gather_primitives.gather_primitives(blender_mesh, vertex_groups, modifiers, export_settings)
+
+
+def __gather_weights(blender_mesh: bpy.types.Mesh,
+                     vertex_groups: Optional[bpy.types.VertexGroups],
+                     modifiers: Optional[bpy.types.ObjectModifiers],
+                     export_settings
+                     ) -> Optional[List[float]]:
+    return None
+