小煜
f2257449de
- Add edge UV coordinate data for N00_000_00_EyeHighlight_00_EYE mesh component with 264 edges - Add edge UV coordinate data for N00_000_00_EyeIris_00_EYE mesh component - Add comprehensive README documentation for body mesh editor resources - Provide detailed edge dissolution information for eye highlight and iris mesh components to support mesh separation workflow
110 lines
3.3 KiB
Markdown
110 lines
3.3 KiB
Markdown
# Body Mesh UV Edge Selection JSON 文件说明
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## 概述
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这些JSON文件存储了VRM模型各材质区域需要融并(Dissolve)的边的UV坐标数据。通过UV坐标精确匹配，可以在3D视图中选中对应的边，即使UV存在重叠也不会误选。
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## 文件列表
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| 文件名 | 描述 |
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|--------|------|
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| `N00_000_00_Body_00_SKIN (Instance).json` | 身体皮肤区域 |
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| `N00_000_00_Face_00_SKIN (Instance).json` | 脸部皮肤区域 |
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| `N00_000_00_FaceMouth_00_FACE (Instance).json` | 口腔区域 |
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| `N00_000_00_FaceEyeline_00_FACE (Instance).json` | 眼线区域 |
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| `N00_000_00_hH_00_FACE (Instance).json` | 面部其他区域 |
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| `N00_000_00_EyeIris_00_EYE (Instance).json` | 瞳孔/虹膜区域 |
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| `N00_000_00_EyeWhite_00_EYE (Instance).json` | 眼白区域 |
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| `N00_000_00_EyeHighlight_00_EYE (Instance).json` | 眼睛高光区域 |
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## JSON 结构
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```json
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{
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"description": "区域描述",
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"total_edges": 边数量,
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"edge_uvs": [
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[[u1, v1], [u2, v2]],
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...
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]
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}
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```
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- `description`: 该文件的描述信息
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- `total_edges`: 存储的UV边数量
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- `edge_uvs`: UV边坐标数组，每条边由两个UV坐标点组成
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## 使用方法
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### 保存当前选中的边到JSON
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```python
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import bpy, bmesh, json, os
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obj = bpy.context.active_object
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bm = bmesh.from_edit_mesh(obj.data)
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uv_layer = bm.loops.layers.uv.active
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selected_uv_edges = []
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seen = set()
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for edge in bm.edges:
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if edge.select:
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for loop in edge.link_loops:
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uv1 = (round(loop[uv_layer].uv.x, 6), round(loop[uv_layer].uv.y, 6))
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uv2 = (round(loop.link_loop_next[uv_layer].uv.x, 6), round(loop.link_loop_next[uv_layer].uv.y, 6))
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key = (uv1, uv2) if uv1 < uv2 else (uv2, uv1)
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if key not in seen:
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seen.add(key)
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selected_uv_edges.append([list(uv1), list(uv2)])
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data = {
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"description": "描述信息",
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"total_edges": len(selected_uv_edges),
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"edge_uvs": selected_uv_edges
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}
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with open("output.json", 'w', encoding='utf-8') as f:
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json.dump(data, f, indent=2, ensure_ascii=False)
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```
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### 从JSON加载并选中边
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```python
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import bpy, bmesh, json
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with open("input.json", 'r', encoding='utf-8') as f:
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data = json.load(f)
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target_uvs = set()
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for edge_uv in data['edge_uvs']:
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uv1 = (round(edge_uv[0][0], 6), round(edge_uv[0][1], 6))
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uv2 = (round(edge_uv[1][0], 6), round(edge_uv[1][1], 6))
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key = (uv1, uv2) if uv1 < uv2 else (uv2, uv1)
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target_uvs.add(key)
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obj = bpy.context.active_object
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bm = bmesh.from_edit_mesh(obj.data)
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uv_layer = bm.loops.layers.uv.active
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bpy.ops.mesh.select_all(action='DESELECT')
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bm.select_mode = {'EDGE'}
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for edge in bm.edges:
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for loop in edge.link_loops:
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uv1 = (round(loop[uv_layer].uv.x, 6), round(loop[uv_layer].uv.y, 6))
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uv2 = (round(loop.link_loop_next[uv_layer].uv.x, 6), round(loop.link_loop_next[uv_layer].uv.y, 6))
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key = (uv1, uv2) if uv1 < uv2 else (uv2, uv1)
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if key in target_uvs:
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edge.select = True
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break
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bmesh.update_edit_mesh(obj.data)
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```
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## 注意事项
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1. UV坐标精度为6位小数，匹配时使用相同精度
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2. 即使不同材质区域的UV重叠，通过loop的UV数据独立存储特性，可以精确选中目标边
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3. 这些文件用于在无法使用UV同步选区时，通过UV坐标反向选中3D视图中的边
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