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  3. FLinearExtrusionOp

FLinearExtrusionOp

LinearExtrusionOp extrudes a set of triangles of a mesh in a linear direction, with various options for how to process that extrusion.

API > API/Plugins > API/Plugins/ModelingOperators > API/Plugins/ModelingOperators/PolyModelingOps

Inheritance Hierarchy

References

   
Module ModelingOperators
Header /Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingOperators/Public/PolyModelingOps/LinearExtrusionOp.h
Include #include "PolyModelingOps/LinearExtrusionOp.h"

Syntax

class FLinearExtrusionOp : public UE::Geometry::FDynamicMeshOperator

Remarks

LinearExtrusionOp extrudes a set of triangles of a mesh in a linear direction, with various options for how to process that extrusion.

Variables

  Type Name Description
Public variable bool bInferGroupsFromNeighbours Assign new groups to regions of the extrusion "tube" based on the existing adjacent groups before extrusion.
Public variable bool bInferMaterialID If true, Material IDs around the border of the extrude area are propagated "down" the extrusion tube
Public variable bool bNewGroupPerSubdivision If true, assign a separate group for each subdivision, otherwise all subdivisions have the same group
Public variable bool bRecomputeNormals Determine whether normals should be recomputed
Public variable bool bRemapExtrudeGroups Assign new GroupIDs to each input GroupID in the extrude area.
Public variable bool bShellsToSolids If bShellsToSolids is true, patches surrounded by mesh boundaries will be extruded into closed solids instead of open shells
Public variable bool bUseColinearityForSettingBorderGroups (this parameter may not be relevant and perhaps should be removed...) Used when setting groups for the sides when the extrusion includes a mesh border.
Public variable bool bUVIslandPerGroup If true, assign a new UV island for each new group, otherwise each disconnected extrusion tube is unwrapped to a single UV island
Public variable double CreaseAngleThresholdDeg If the opening angle at an edge of the extrusion tube is > this threshold, "cut" any group that crosses the edge into two groups
Public variable int32 NumSubdivisions Number of subdivisions along the extrusion "tubes"
Public variable TSharedPtr< FSharedConstDynamicMesh3 > OriginalMeshShared InputsHandle to the source DynamicMesh
Public variable double RaycastMaxDistance In RaycastToPlane mode, if raycast distance is > this value, fallback to no shape change
Public variable ESelectionShapeModifierMode RegionModifierMode Current modifier applied to selection region
Public variable FVector3d Scale End scale of the Extrusion, relative to initial scale (1,1,1)
Public variable int SetMaterialID Constant Material ID to set along the extrusion tube
Public variable FFrame3d StartFrame Initial frame of the Extrusion
Public variable FFrame3d ToFrame End frame of the Extrusion
Public variable TArray< int32 > TriangleSelection Triangles of the OriginalMesh that should be extruded
Public variable double UVScaleFactor Scaling applied to the default UV values

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function Virtual bool Outputs Compute result applied directly to EditMesh

Overridden from FDynamicMeshOperator

  Type Name Description
Public function Virtual void Calculate the result of the operator. This will populate the internal Mesh and Transform.

Enums

  Type Name Description
Public enum ESelectionShapeModifierMode ParametersModifier applied to the selected triangles during extrusion  

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