public void UpdateDeformation(String imagePath, double scale)
{
TGAImage image = new TGAImage(imagePath);
//double[] rho = IOHuiZhao.Instance.ReadVectorFromMatlab("A.vector");
double[] rho = SetCurvatureChange(image, 10);
SparseMatrixQuaternion E = BuildEigenValueProblem(rho);
DenseMatrixQuaternion lamda = LinearSystemDEC.Instance.SolveEigen(ref E);
SparseMatrixQuaternion Laplace = BuildCotLaplace();
DenseMatrixQuaternion omega = BuildOmega(lamda);
LinearSystemGenericByLib.Instance.FactorizationLU(ref Laplace);
DenseMatrixQuaternion newV = LinearSystemGenericByLib.Instance.SolveByFactorizedLU(ref omega);
NormalizeSolution(ref newV);
UpdatePosition(ref newV);
}
public void UpdateDeformation(String imagePath, double scale)
{
TGAImage image = new TGAImage(imagePath);
//double[] rho = IOHuiZhao.Instance.ReadVectorFromMatlab("A.vector");
double[] rho = SetCurvatureChange(image, 10);
SparseMatrixQuaternion E = BuildEigenValueProblem(rho);
DenseMatrixQuaternion lamda = LinearSystemDEC.Instance.SolveEigen(ref E);
SparseMatrixQuaternion Laplace = BuildCotLaplace();
DenseMatrixQuaternion omega = BuildOmega(lamda);
LinearSystemGenericByLib.Instance.FactorizationLU(ref Laplace);
DenseMatrixQuaternion newV = LinearSystemGenericByLib.Instance.SolveByFactorizedLU(ref omega);
NormalizeSolution(ref newV);
UpdatePosition(ref newV);
}
public double[] SetCurvatureChange(TGAImage image, double scale)
{
double[] rho = new double[mesh.Faces.Count];
double w = (double)image.Image.Width;
double h = (double)image.Image.Height;
foreach (TriMesh.Face face in mesh.Faces)
{
rho[face.Index] = 0;
for (int i = 0; i < 3; i++)
{
TriMesh.HalfEdge faceVertex = face.FindHalfedgeTo(face.GetVertex(i));
Vector2D uv = faceVertex.Traits.TextureCoordinate;
rho[face.Index] += image.Sample(uv.x * w, uv.y * h) / 3;
}
//Shrink to [-scale,scale]
rho[face.Index] = (2 * (rho[face.Index] - 0.5)) * scale;
}
return(rho);
}
public double[] SetCurvatureChange(TGAImage image, double scale)
{
double[] rho = new double[mesh.Faces.Count];
double w = (double)image.Image.Width;
double h = (double)image.Image.Height;
foreach (TriMesh.Face face in mesh.Faces)
{
rho[face.Index] = 0;
for (int i = 0; i < 3; i++)
{
TriMesh.HalfEdge faceVertex = face.FindHalfedgeTo(face.GetVertex(i));
Vector2D uv = faceVertex.Traits.TextureCoordinate;
rho[face.Index] += image.Sample(uv.x * w, uv.y * h) / 3;
}
//Shrink to [-scale,scale]
rho[face.Index] = (2 * (rho[face.Index] - 0.5)) * scale;
}
return rho;
}
