feat: 添加VRM网格工具插件，支持网格分离和UV边融并功能

添加VRM网格工具插件，包含以下主要功能： - Body网格分离：将非皮肤材质面分离为独立对象 - UV边融并：根据预定义UV数据将三角面转换为四边面 - 提供独立面板和操作符，与VRM官方插件兼容 - 包含材质处理顺序和自动转换逻辑 - 添加JSON数据文件和工具函数
2026-01-02 14:11:43 +08:00
commit 3bbb46bca7
18 changed files with 96964 additions and 0 deletions
--- a/panel.py
+++ b/panel.py
@@ -0,0 +1,134 @@
+# SPDX-License-Identifier: MIT
+# VRM Mesh Tools - UI Panel for mesh separation and UV edge merging
+
+from collections.abc import Set as AbstractSet
+from typing import TYPE_CHECKING, Optional
+
+from bpy.types import Context, Panel
+
+from .utils import (
+    MaterialInfo,
+    find_body_mesh,
+    find_face_mesh,
+    get_material_face_count,
+    is_retained_material,
+)
+
+if TYPE_CHECKING:
+    from bpy.types import Object
+
+
+class VRM_TOOLS_PT_mesh_separator(Panel):
+    """VRM Mesh Tools 面板 - 提供网格分离和UV边融并功能"""
+
+    bl_idname = "VRM_TOOLS_PT_mesh_separator"
+    bl_label = "VRM Mesh Tools"
+    bl_space_type = "VIEW_3D"
+    bl_region_type = "UI"
+    bl_category = "VRM Tools"  # 独立的侧边栏分类
+    bl_options: AbstractSet[str] = set()
+
+    @classmethod
+    def poll(cls, context: Context) -> bool:
+        """检查是否应该显示面板 - 仅在选中包含Body网格的Armature时显示"""
+        armature = cls._get_armature(context)
+        if armature is None:
+            return False
+        body_mesh = find_body_mesh(armature)
+        return body_mesh is not None
+
+    @classmethod
+    def _get_armature(cls, context: Context) -> Optional["Object"]:
+        """获取当前选中的Armature对象"""
+        active_object = context.active_object
+        if active_object is None:
+            return None
+
+        if active_object.type == "ARMATURE":
+            return active_object
+
+        # 如果选中的是网格，检查其父对象是否为Armature
+        if active_object.parent is not None and active_object.parent.type == "ARMATURE":
+            return active_object.parent
+
+        return None
+
+    def draw(self, context: Context) -> None:
+        """绘制面板UI"""
+        layout = self.layout
+        armature = self._get_armature(context)
+
+        if armature is None:
+            layout.label(text="未找到Armature对象", icon="ERROR")
+            return
+
+        body_mesh = find_body_mesh(armature)
+        if body_mesh is None:
+            layout.label(text="未找到Body网格对象", icon="ERROR")
+            return
+
+        mesh_data = body_mesh.data
+        if mesh_data is None:
+            layout.label(text="Body网格数据无效", icon="ERROR")
+            return
+
+        # 显示材质统计信息（区分保留材质和可分离材质）
+        box = layout.box()
+        box.label(text="材质列表", icon="MATERIAL")
+
+        # 收集材质信息，使用is_retained_material分类
+        materials_info: list[MaterialInfo] = []
+        for i, material in enumerate(mesh_data.materials):
+            if material is not None:
+                face_count = get_material_face_count(mesh_data, i)
+                is_retained = is_retained_material(material.name)
+                materials_info.append(
+                    MaterialInfo(
+                        name=material.name,
+                        index=i,
+                        face_count=face_count,
+                        is_skin=is_retained,  # 使用is_skin字段存储保留状态
+                    )
+                )
+
+        # 显示材质列表，区分保留材质（SKIN/HAIR）和可分离材质（CLOTH和其他）
+        has_separable = False
+        for mat_info in materials_info:
+            row = box.row()
+            if mat_info.is_skin:  # is_skin字段现在表示是否为保留材质
+                # 保留材质（SKIN/HAIR）标记为"[保留]"
+                row.label(text=f"[保留] {mat_info.name}", icon="CHECKMARK")
+            else:
+                # 可分离材质（CLOTH和其他）标记为"[分离]"
+                row.label(text=f"[分离] {mat_info.name}", icon="MESH_DATA")
+                has_separable = True
+            row.label(text=f"{mat_info.face_count} 面")
+
+        # 显示分离操作按钮
+        layout.separator()
+        col = layout.column()
+        col.enabled = has_separable
+        col.operator(
+            "vrm_tools.separate_non_skin_faces",
+            text="分离非皮肤面",
+            icon="MESH_DATA",
+        )
+
+        if not has_separable:
+            layout.label(text="没有可分离材质", icon="INFO")
+
+        # 显示UV边融并按钮
+        layout.separator()
+        face_mesh = find_face_mesh(armature) if armature else None
+        has_vrm_structure = body_mesh is not None and face_mesh is not None
+
+        col = layout.column()
+        col.enabled = has_vrm_structure
+        col.operator(
+            "vrm_tools.merge_uv_edges",
+            text="根据UV转四边面",
+            icon="MOD_EDGESPLIT",
+        )
+
+        if not has_vrm_structure:
+            layout.label(text="需要Body和Face网格", icon="INFO")