Initial work for blender integration

Author: munkybutt

src/pyrightconfig.json

@@ -2,7 +2,7 @@
     "pythonVersion": "3.10",
     "pythonPlatform": "Windows",
     "extraPaths": [
-        "C:/Users/Shea.Richardson/Desktop/Git/SkinPlusPlus/.dev/venv/310/.venv/Lib/site-packages"
+        "D:/Code/Git/SkinPlusPlus-latest/.dev/venvs/py310/.venv/Lib/site-packages"
     ],
     "reportDuplicateImport": "warning",
     "reportImplicitStringConcatenation": "warning",
@@ -15,4 +15,14 @@
     "reportUnusedFunction": "information",
     "reportUnusedImport": "information",
     "reportUnusedVariable": "information",
+    "reportMissingModuleSource": "none",
+    "executionEnvironments": [
+        {
+            "root": "D:/Code/Git/SkinPlusPlus-latest/src/skin_plus_plus/dccs/blender",
+            "extraPaths": [
+                "C:/Program Files/Blender Foundation/Blender 4.2/4.2/scripts/modules",
+                "D:/Code/Git/SkinPlusPlus-latest/.dev/venvs/py311/.venv/Lib/site-packages"
+            ]
+        }
+    ]
 }

src/skin_plus_plus/dccs/blender/__init__.py

@@ -0,0 +1,135 @@
+from __future__ import annotations
+
+import pathlib
+
+import bpy
+import bpy.types as bpy_types
+from typing_extensions import override
+
+from .. import core
+
+_typing = False
+if _typing:
+    from collections.abc import Sequence
+
+    from ... import _types
+del _typing
+
+
+class IHost(core.IHost[bpy_types.Object]):
+    @property
+    @override
+    def name(self) -> str:
+        return "blender"
+
+    @property
+    @override
+    def api_name(self) -> str:
+        return "bpy"
+
+    @override
+    def _get_version_number(self):
+        version_info = mxrt.MaxVersion()
+        version_number = version_info[7]
+        return version_number
+
+    @override
+    def get_current_file_path(self) -> pathlib.Path:
+        max_file_path = mxrt.MaxFilePath
+        if not max_file_path:
+            raise RuntimeError("File is not saved!")
+
+        return pathlib.Path(max_file_path, mxrt.MaxFileName)
+
+    @override
+    def get_selection(self) -> tuple[bpy_types.Object, ...]:
+        return tuple(mxrt.Selection)
+
+    @override
+    def get_node_name(self, node: bpy_types.Object) -> str:
+        return node.name
+
+    @override
+    def get_vertex_positions(self, node: bpy_types.Object) -> _types.T_Float64Array:
+        return self._get_vertex_positions(node.Name)
+
+    @override
+    def get_node_handle(self, node: bpy_types.Object) -> int:
+        return node.Handle
+
+    @override
+    def extract_skin_data(
+        self, node: bpy_types.Object, vertex_ids: Sequence[int] | None = None
+    ) -> core.SkinData:
+        armature = self._get_armature(node)
+        if armature is None:
+            raise RuntimeError(f"No armature found for node: {node}")
+
+        vertices = node.data.vertices
+        vertex_group_names = [vertex_group.name for vertex_group in node.vertex_groups]
+        for bone in armature.pose.bones:
+            if bone.name not in vertex_group_names:
+                continue
+
+            bone_index = node.vertex_groups[bone.name].index
+            bone_vertices = (
+                vertex
+                for vertex in vertices
+                if bone_index in {group.group for group in vertex.groups}
+            )
+
+            for bone_vertex in bone_vertices:
+                weight = bone_vertex.groups[bone_index].weight
+                print(f"Vertex: {bone_vertex.index} weight: {weight} bone: {bone.name}")
+
+    def _get_armature(self, node: bpy_types.Object) -> bpy_types.Object | None:
+        parent = node.parent
+        while parent:
+            if parent.type == "ARMATURE":
+                return parent
+
+
+
+
+
+
+def _get_armature(node: bpy_types.Object) -> bpy_types.Object | None:
+    parent = node.parent
+    while parent:
+        if parent.type == "ARMATURE":
+            return parent
+
+def extract_skin_data(
+    node: bpy_types.Object, vertex_ids: Sequence[int] | None = None
+):
+    armature = _get_armature(node)
+    if armature is None:
+        raise RuntimeError(f"No armature found for node: {node}")
+
+    vertices = node.data.vertices
+    skin_data = [[0.0, 0.0]] * len(vertices)
+    vertex_group_names = [vertex_group.name for vertex_group in node.vertex_groups]
+    for bone in armature.pose.bones:
+        if (bone_name := bone.name) not in vertex_group_names:
+            continue
+
+        # bone_index = node.vertex_groups[bone_name].index
+        # bone_vertices = (
+        #     vertex
+        #     for vertex in vertices
+        #     if bone_index in {group.group for group in vertex.groups}
+        # )
+        for vertex in vertices:
+            for influence in vertex.groups:
+                skin_data[vertex.index][influence.group] = influence.weight
+
+        # for bone_vertex in bone_vertices:
+        #     weight = bone_vertex.groups[bone_index].weight
+        #     # print(f"Vertex: {bone_vertex.index} weight: {weight} bone: {bone.name}")
+        #     skin_data[bone_vertex.index][bone_index] = weight
+        #     print(f"[{bone_vertex.index}][{bone_index}] = {weight}")
+
+    for weights in skin_data:
+        print(weights)
+
+