MeshTransforms.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
// Port of geometry3cpp MeshWeights
 
#pragma once
 
#include "DynamicMesh/DynamicMesh3.h"
#include "FrameTypes.h"
#include "GeometryBase.h"
#include "Math/MathFwd.h"
#include "TransformTypes.h"
 
namespace UE { namespace Geometry { class FDynamicMesh3; } }
template <typename FuncType> class TFunctionRef;
 
 
namespace MeshTransforms
{
    using namespace UE::Geometry;
 
    // enum to control which attributes are transformed
    enum class ETransformAttributes
    {
        Positions = 1 << 0,
        VertexNormals = 1 << 1,
        Normals = 1 << 2,
        Tangents = 1 << 3,
        SculptLayers = 1 << 4,
        All = Positions | VertexNormals | Normals | Tangents | SculptLayers
    };
    ENUM_CLASS_FLAGS(ETransformAttributes);
 
    GEOMETRYCORE_API void Translate(FDynamicMesh3& Mesh, const FVector3d& Translation, ETransformAttributes TransformAttributes = ETransformAttributes::All);
 
    GEOMETRYCORE_API void Scale(FDynamicMesh3& Mesh, const FVector3d& Scale, const FVector3d& Origin, bool bReverseOrientationIfNeeded = false, bool bOnlyPositions = false);
    
    GEOMETRYCORE_API void Scale(FDynamicMesh3& Mesh, const FVector3d& Scale, const FVector3d& Origin, bool bReverseOrientationIfNeeded, ETransformAttributes TransformAttributes);
 
    GEOMETRYCORE_API void Rotate(FDynamicMesh3& Mesh, const FRotator& Rotation, const FVector3d& RotationOrigin, ETransformAttributes TransformAttributes = ETransformAttributes::All);
 
    GEOMETRYCORE_API void WorldToFrameCoords(FDynamicMesh3& Mesh, const FFrame3d& Frame, ETransformAttributes TransformAttributes = ETransformAttributes::All);
 
    GEOMETRYCORE_API void FrameCoordsToWorld(FDynamicMesh3& Mesh, const FFrame3d& Frame, ETransformAttributes TransformAttributes = ETransformAttributes::All);
 
 
    GEOMETRYCORE_API void ApplyTransform(FDynamicMesh3& Mesh, const FTransformSRT3d& Transform, bool bReverseOrientationIfNeeded = false, ETransformAttributes TransformAttributes = ETransformAttributes::All);
 
 
    GEOMETRYCORE_API void ApplyTransformInverse(FDynamicMesh3& Mesh, const FTransformSRT3d& Transform, bool bReverseOrientationIfNeeded = false, ETransformAttributes TransformAttributes = ETransformAttributes::All);
 
 
    GEOMETRYCORE_API void ApplyTransform(FDynamicMesh3& Mesh, 
        TFunctionRef<FVector3d(const FVector3d&)> PositionTransform,
        TFunctionRef<FVector3f(const FVector3f&)> NormalTransform);
 
    GEOMETRYCORE_API void ApplyTransform(FDynamicMesh3& Mesh,
        TFunctionRef<FVector3d(const FVector3d&)> PositionTransform,
        TFunctionRef<FVector3f(const FVector3f&)> NormalTransform,
        TFunctionRef<FVector3f(const FVector3f&)> TangentTransform,
        ETransformAttributes TransformAttributes = ETransformAttributes::All
    );
 
    GEOMETRYCORE_API void ReverseOrientationIfNeeded(FDynamicMesh3& Mesh, const FTransformSRT3d& Transform);
 
};