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#preflight 62bc9eb4a328a968bafc368a #rb Jimmy.Andrews [CL 21007309 by David Hill in ue5-main branch]
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Selections/MeshEdgeSelection.h"
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#include "DynamicMesh/DynamicMesh3.h"
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#include "Containers/Set.h"
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#include "Selections/MeshFaceSelection.h"
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#include "Selections/MeshVertexSelection.h"
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#include "Math/UnrealMathUtility.h"
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using namespace UE::Geometry;
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// convert vertex selection to edge selection. Require at least minCount verts of edge to be selected
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FMeshEdgeSelection::FMeshEdgeSelection(const FDynamicMesh3* mesh, const FMeshVertexSelection& convertV, int minCount) : Mesh(mesh)
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{
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for (int eid : Mesh->EdgeIndicesItr())
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{
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FIndex2i ev = Mesh->GetEdgeV(eid);
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int n = (convertV.IsSelected(ev.A) ? 1 : 0) +
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(convertV.IsSelected(ev.B) ? 1 : 0);
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if (n >= minCount)
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{
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add(eid);
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}
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}
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}
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// convert face selection to edge selection. Require at least minCount tris of edge to be selected
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FMeshEdgeSelection::FMeshEdgeSelection(const FDynamicMesh3* mesh, const FMeshFaceSelection& convertT, int minCount) : Mesh(mesh)
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{
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minCount = FMath::Clamp(minCount, 1, 2);
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if (minCount == 1)
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{
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for (int tid : convertT)
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{
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FIndex3i te = Mesh->GetTriEdges(tid);
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add(te.A); add(te.B); add(te.C);
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}
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}
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else
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{
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for (int eid : Mesh->EdgeIndicesItr())
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{
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FIndex2i et = Mesh->GetEdgeT(eid);
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if (convertT.IsSelected(et.A) && convertT.IsSelected(et.B))
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{
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add(eid);
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}
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}
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}
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}
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void FMeshEdgeSelection::SelectBoundaryTriEdges(const FMeshFaceSelection& Triangles)
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{
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for (int tid : Triangles)
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{
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FIndex3i te = Mesh->GetTriEdges(tid);
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for ( int j = 0; j < 3; ++j )
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{
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FIndex2i et = Mesh->GetEdgeT(te[j]);
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int other_tid = (et.A == tid) ? et.B : et.A;
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if (Triangles.IsSelected(other_tid) == false)
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{
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add(te[j]);
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}
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}
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}
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} |