UE C++里面怎么在 procedural mesh中实现一个顶点一个颜色
时间: 2024-03-21 17:42:07 浏览: 168
在UE C++中,在Procedural Mesh中实现一个顶点一个颜色的效果,可以使用以下步骤:
1. 在代码中定义一个顶点结构体,其中包括顶点位置和顶点颜色:
```
struct FVertex
{
FVector Position;
FColor Color;
};
```
2. 创建一个顶点数组和一个索引数组,并将它们分配给Procedural Mesh Component:
```
// 创建顶点数组和索引数组
TArray<FVertex> Vertices;
TArray<int32> Triangles;
// 添加顶点和三角形到数组中
// 创建Procedural Mesh Component
UProceduralMeshComponent* ProcMesh = NewObject<UProceduralMeshComponent>(this);
// 设置顶点和索引数组
ProcMesh->CreateMeshSection(0, Vertices, Triangles, TArray<FVector>(), TArray<FVector2D>(), TArray<FColor>(), TArray<FProcMeshTangent>(), true);
```
3. 在顶点数组中为每个顶点设置颜色:
```
// 在顶点数组中为每个顶点设置颜色
for (int32 i = 0; i < Vertices.Num(); i++)
{
Vertices[i].Color = FColor(255, 0, 0, 255); // 将顶点颜色设置为红色
}
// 更新Procedural Mesh Component的颜色数组
ProcMesh->UpdateMeshSection(0, Vertices, TArray<FVector>(), TArray<FVector2D>(), TArray<FColor>(), TArray<FProcMeshTangent>());
```
请注意,这只是一个示例代码,并且您需要根据自己的需求进行修改和调整。
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