FStaticMeshOperations::SwapPolygonPolygonGroup

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Unreal Engine C++ API Reference > Runtime > StaticMeshDescription > FStaticMeshOperations

References

static void SwapPolygonPolygonGroup  
&40;  
    FMeshDescription & MeshDescription,  
    int32 SectionIndex,  
    int32 TriangleIndexStart,  
    int32 TriangleIndexEnd,  
    bool bRemoveEmptyPolygonGroup  
&41;  
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static void SwapPolygonPolygonGroup &40;     FMeshDescription & MeshDescription,     int32 SectionIndex,     int32 TriangleIndexStart,     int32 TriangleIndexEnd,     bool bRemoveEmptyPolygonGroup &41;

Remarks

Move some polygon to a new PolygonGroup(section) SectionIndex: The target section we want to assign the polygon. See bRemoveEmptyPolygonGroup to know how its used TriangleIndexStart: The triangle index is compute as follow: foreach polygon {TriangleIndex += Polygon->NumberTriangles} TriangleIndexEnd: The triangle index is compute as follow: foreach polygon {TriangleIndex += Polygon->NumberTriangles} bRemoveEmptyPolygonGroup: If true, any polygonGroup that is empty after moving a polygon will be delete. This parameter impact how SectionIndex is use If param is true : PolygonGroupTargetID.GetValue() do not necessary equal SectionIndex in case there is less sections then SectionIndex If param is false : PolygonGroupTargetID.GetValue() equal SectionIndex, we will add all necessary missing PolygonGroupID (this can generate empty PolygonGroupID)