indices | 定义网格面的索引的数组。 |
topology | 网格的拓扑,例如:三角形、线条、四边形、点等。请参阅 MeshTopology。 |
submesh | 要修改的子网格。 |
calculateBounds | 在设置索引之后计算网格的包围盒。这会在默认情况下进行。 在要使用现有包围盒并减少设置索引的 CPU 开销时,请使用 false。 |
baseVertex | 添加到所有顶点索引的可选顶点偏移。 |
为子网格设置索引缓冲区。
子网格表示使用单个 Material 渲染的三角形(或具有不同 MeshTopology 的索引)的列表。当网格与具有多个材质的 Renderer 一起使用时,应确保每个材质有一个子网格。
SetTriangles 和 triangles 始终将网格设置为由三角形的面
组成。使用 SetIndices 可创建由线条或点组成的网格。
在使用 16 位索引缓冲区时,baseVertex
参数可以用于实现大于 65535 个顶点的网格,
只要每个子网格都适应其自己的 65535 顶点区域即可。例如,如果传递给 SetIndices 的索引缓冲区
包含索引 10、11、12 并且 baseVertex
设置为 100000,则实际上会使用索引 100010、100011 和 100012
进行渲染。
请注意,网格在默认情况下使用 16 位 indexFormat,即,索引缓冲区中支持的最大值是 65535(即使在使用 @int[]@ 输入数据时)。若要使用较大索引缓冲区值,应先将 indexFormat 设置为 IndexFormat.UInt32。
另请参阅:subMeshCount、MeshTopology 枚举、indexFormat。
indices | 定义网格面的索引的数组。 |
indicesStart | 要从输入数组采用的第一个元素的索引。 |
indicesLength | 要从输入数组采用的元素数。 |
topology | 网格的拓扑,例如:三角形、线条、四边形、点等。请参阅 MeshTopology。 |
submesh | 要修改的子网格。 |
calculateBounds | 在设置索引之后计算网格的包围盒。这会在默认情况下进行。 在要使用现有包围盒并减少设置索引的 CPU 开销时,请使用 false。 |
baseVertex | 添加到所有顶点索引的可选顶点偏移。 |
使用输入数组的一部分设置子网格的索引缓冲区。
此方法的行为方式如同调用 SetIndices,所使用的数组为整个数组的一个切片(从 indicesStart
索引开始,长度为给定的 indicesLength
长度)。生成的子网格会具有 indicesLength
数量的顶点索引。
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