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GeometryScript: add ApplyMeshPolygroupBevel operation #rb none #rnx #jira none #preflight 618434449249220001a944df #ROBOMERGE-AUTHOR: ryan.schmidt #ROBOMERGE-SOURCE: CL 18065452 in //UE5/Release-5.0/... via CL 18065478 #ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v889-18060218) #ROBOMERGE[STARSHIP]: UE5-Main [CL 18065511 by ryan schmidt in ue5-release-engine-test branch]
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Operations/PolyEditingUVUtil.h"
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#include "DynamicMesh/DynamicMesh3.h"
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#include "Parameterization/DynamicMeshUVEditor.h"
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using namespace UE::Geometry;
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void UE::Geometry::ComputeArbitraryTrianglePatchUVs(
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FDynamicMesh3& Mesh,
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FDynamicMeshUVOverlay& UVOverlay,
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const TArray<int32>& TriangleSet)
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{
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TArray<int32> NbrTriSet;
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double NbrUVAreaSum = 0.0;
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double Nbr3DAreaSum = 0.0;
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for (int32 tid : TriangleSet)
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{
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FIndex3i NbrTris = Mesh.GetTriNeighbourTris(tid);
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for (int32 j = 0; j < 3; ++j)
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{
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if (NbrTris[j] != IndexConstants::InvalidID && NbrTriSet.Contains(NbrTris[j]) == false)
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{
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NbrTriSet.Add(NbrTris[j]);
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if (UVOverlay.IsSetTriangle(NbrTris[j]))
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{
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FVector3d A, B, C;
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Mesh.GetTriVertices(NbrTris[j], A, B, C);
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Nbr3DAreaSum += VectorUtil::Area(A,B,C);
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FVector2f U, V, W;
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UVOverlay.GetTriElements(NbrTris[j], U, V, W);
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NbrUVAreaSum += (double)VectorUtil::Area(U, V, W);
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}
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}
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}
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}
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double UseUVScale = FMathd::Max(FMathd::Sqrt(NbrUVAreaSum),0.0001) / FMathd::Max(FMathd::Sqrt(Nbr3DAreaSum),0.0001);
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FDynamicMeshUVEditor UVEditor(&Mesh, &UVOverlay);
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FUVEditResult UVEditResult;
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UVEditor.SetTriangleUVsFromExpMap(TriangleSet, FDynamicMeshUVEditor::FExpMapOptions(), &UVEditResult);
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UVEditor.TransformUVElements(UVEditResult.NewUVElements, [&](const FVector2f& UV)
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{
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return (float)UseUVScale * UV;
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});
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} |