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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/FPoly
Description
Compute normal of an FPoly. Works even if FPoly has 180-degree-angled sides (which are often created during T-joint elimination). Returns nonzero result (plus sets normal vector to zero) if a problem occurs.
| Name | CalcNormal |
| Type | function |
| Header File | /Engine/Source/Runtime/Engine/Classes/Engine/Polys.h |
| Include Path | #include "Engine/Polys.h" |
| Source | /Engine/Source/Runtime/Engine/Private/Polygon.cpp |
int32 CalcNormal
(
bool bSilent
)