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API > API/Plugins > API/Plugins/MeshModelingToolsEditorOnlyExp > API/Plugins/MeshModelingToolsEditorOnlyExp/FMeshVertexAttributePaintToolDat-
Description
Stable baseline for gated-mode stamp reads. Frozen across an entire transaction so multi-call sequences (e.g. slider drag) read the same pre-transaction value for a given vertex. Returns 0 if invalid or vertex index is out of range.
| Name | GetPreChangeValue |
| Type | function |
| Header File | /Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsEditorOnlyExp/Public/MeshVertexAttributePaintToolBase.h |
| Include Path | #include "MeshVertexAttributePaintToolBase.h" |
| Source | /Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsEditorOnlyExp/Private/MeshVertexAttributePaintToolBase.cpp |
float GetPreChangeValue
(
int32 VertexIdx
) const