TToDynamicMesh

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API > API/Runtime > API/Runtime/MeshConversion

Class used to convert a mesh with attributes (e.g. normals, uvs etc) to a FDynamicMesh3

The Source Mesh has to implement this interface

struct FSrcMeshInterface { // ID types: must be castable to int32 typedef SrcVertIDType VertIDType; typedef SrcTriIDType TriIDType; typedef SrcUVIDType UVIDType; typedef SrcNormalIDType NormalIDType; typedef SrcColorIDType ColorIDType typedef SrcWedgeIDType WedgeIDType;

// accounting. int32 NumTris() const; int32 NumVerts() const; int32 NumUVLayers() const;

// "Vertex Buffer" info const Iterable_VertIDType& GetVertIDs() const; const FVector3d GetPosition(const VertIDType VtxID) const;

// "Index Buffer" info const Iterable_TriIDType& GetTriIDs() const // return false if this TriID is not contained in mesh. bool GetTri(const TriIDType TriID, VertIDType& VID0, VertIDType& VID1, VertIDType& VID2) const;

bool HasNormals() const; bool HasTangents() cosnt; bool HasBiTangents() const;

// Each triangle corner is a wedge void GetWedgeID(const TriIDType& TriID, WedgeIDType& WID0, WedgeIDType& WID1, WedgeIDType& WID2) const;

// attribute access per-wedge // NB: ToDynamicMesh will attempt to weld identical attributes that are associated with the same vertex FVector2f GetWedgeUV(int32 UVLayerIndex, WedgeIDType WID) const; FVector3f GetWedgeNormal(WedgeIDType WID) const; FVector3f GetWedgeTangent(WedgeIDType WID) const; FVector3f GetWedgeBiTangent(WedgeIDType WID) const; FVector4f GetWedgeColor(WedgeIDType WID) const;

// attribute access that exploits shared attributes. // each group of shared attributes presents itself as a mesh with its own attribute vertex buffer. // NB: If the mesh has no shared Attr attributes, then Get{Attr}IDs() should return an empty array. // NB: Get{Attr}Tri() functions should return false if the triangle is not set in the attribute mesh.

const TArray& GetUVIDs(int32 LayerID) const; FVector2f GetUV(int32 LayerID, UVIDType UVID) const; bool GetUVTri(int32 LayerID, const TriIDType& TID, UVIDType& ID0, UVIDType& ID1, UVIDType& ID2) const;

const TArray& GetNormalIDs() const; FVector3f GetNormal(NormalIDType ID) const; bool GetNormalTri(const TriIDType& TID, NormalIDType& NID0, NormalIDType& NID1, NormalIDType& NID2) const;

const TArray& GetTangentIDs() const; FVector3f GetTangent(NormalIDType ID) const; bool GetTangentTri(const TriIDType& TID, NormalIDType& NID0, NormalIDType& NID1, NormalIDType& NID2) const; const TArray& GetBiTangentIDs() const; FVector3f GetBiTangent(NormalIDType ID) const; bool GetBiTangentTri(const TriIDType& TID, NormalIDType& NID0, NormalIDType& NID1, NormalIDType& NID2) const;

const TArray& GetColorIDs() const; FVector4f GetColor(ColorIDType ID) const; bool GetColorTri(const TriIDType& TID, ColorIDType& NID0, ColorIDType& NID1, ColorIDType& NID2) const;

// weight maps information int32 NumWeightMapLayers() const; float GetVertexWeight(int32 WeightMapIndex, int32 SrcVertID) const; FName GetWeightMapName(int32 WeightMapIndex) const;

// skin weight attributes information int32 NumSkinWeightAttributes() const; UE::AnimationCore::FBoneWeights GetVertexSkinWeight(int32 SkinWeightAttributeIndex, VertIDType VtxID) const; FName GetSkinWeightAttributeName(int32 SkinWeightAttributeIndex) const;

// bone attributes information int32 GetNumBones() const; FName GetBoneName(int32 BoneIdx) const; int32 GetBoneParentIndex(int32 BoneIdx) const; FTransform GetBonePose(int32 BoneIdx) const; FVector4f GetBoneColor(int32 BoneIdx) const; };

Syntax

template<typename SrcMeshType>  
class TToDynamicMesh : public UE::Geometry::TToDynamicMeshBase< SrcMeshType >  
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template<typename SrcMeshType> class TToDynamicMesh : public UE::Geometry::TToDynamicMeshBase< SrcMeshType >

Inheritance Hierarchy

• TToDynamicMeshBase → TToDynamicMesh

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