53 lines
1.0 KiB
Markdown
53 lines
1.0 KiB
Markdown
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# Mesh::AddSection
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```cpp
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void AddSection(const MeshSection& section);
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```
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添加一个网格分段（Submesh）。网格分段用于将一个网格分割成多个部分，每个部分可以有不同的材质。
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**参数：**
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- `section` - 网格分段结构，包含顶点和索引范围以及材质 ID
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**返回：** 无
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**异常：** 无
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**线程安全：** ❌
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**复杂度：** O(1) 均摊
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**示例：**
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```cpp
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#include "XCEngine/Resources/Mesh.h"
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using namespace XCEngine::Resources;
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Mesh mesh;
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mesh.SetVertexData(...);
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mesh.SetIndexData(...);
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// 添加第一个分段（使用材质 0）
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MeshSection section1;
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section1.baseVertex = 0;
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section1.vertexCount = 4;
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section1.startIndex = 0;
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section1.indexCount = 6;
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section1.materialID = 0;
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mesh.AddSection(section1);
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// 添加第二个分段（使用材质 1）
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MeshSection section2;
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section2.baseVertex = 4;
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section2.vertexCount = 4;
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section2.startIndex = 6;
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section2.indexCount = 6;
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section2.materialID = 1;
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mesh.AddSection(section2);
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```
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## 相关文档
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- [类总览](mesh.md) - 返回类总览
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