UE::MeshDeformation::ConstructConstrainedMeshDeformer

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API > API/Plugins > API/Plugins/DynamicMesh

Description

Solves the linear system for p_vec ( Transpose(L) * L + (0 0 ) ) p_vec = source_vec + ( 0 ) ( (0 lambda^2) ) ( lambda^2 c_vec )

where: L := laplacian for the mesh, source_vec := Transpose(L)*L mesh_vertex_positions lambda := weights c_vec := constrained positions

Expected Use:

// Create Deformation Solver from Mesh TUniquePtr MeshDeformer = ConstructConstrainedMeshDeformer(ELaplacianWeightScheme::ClampedCotangent, DynamicMesh);

// Add constraints. for.. { int32 VtxId = ..; double Weight = ..; FVector3d TargetPos = ..; bool bPostFix = ...; MeshDeformer->AddConstraint(VtxId, Weight, TargetPos, bPostFix); }

// Solve for new mesh vertex locations TArray PositionBuffer; MeshDeformer->Deform(PositionBuffer);

// Update Mesh? for (int32 VtxId : DynamicMesh.VertexIndices()) DynamicMesh.SetVertex(VtxId, PositionBuffer[VtxId]); ...

// Update constraint positions. for .. { int32 VtxId = ..; FVector3d TargetPos = ..; bool bPostFix = ...; MeshDeformer->UpdateConstraintPosition(VtxId, TargetPos, bPostFix); }

// Solve for new vertex locations. MeshDeformer->Deform(PositionBuffer); // Update Mesh?

namespace UE  
{  
    namespace MeshDeformation  
    {  
        TUniquePtr < UE::Solvers::IConstrainedMeshSolver > UE::MeshDeformation::ConstructConstrainedMeshDeformer  
        (  
            const ELaplacianWeightScheme WeightScheme,  
            const FDynamicMesh3 & DynamicMesh  
        )  
    }  
}  
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namespace UE {     namespace MeshDeformation     {         TUniquePtr < UE::Solvers::IConstrainedMeshSolver > UE::MeshDeformation::ConstructConstrainedMeshDeformer         (             const ELaplacianWeightScheme WeightScheme,             const FDynamicMesh3 & DynamicMesh         )     } }