ContainsMatter

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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/Materials > API/Runtime/Engine/Materials/UMaterialExpress-_10

Syntax

UPROPERTY (  
          Meta=(RequiredInput="false", ToolTip="Specify 0 if no matter (cloud or participating media) can be found within the area, otherwise should be set > 0."))  
FExpressionInput ContainsMatter  
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Remarks

ContainsMatter must be 1 when the volume is occupied by any matter. This is for the tracing to later not miss it. Otherwise it can be 0 to accelerate the tracing by skipping that area.