/// <summary>
/// Rotate the single channel Nx2 matrix where N is the number of 2D points. The value of the matrix is changed after rotation.
/// </summary>
/// <typeparam name="TDepth">The depth of the points, must be double or float</typeparam>
/// <param name="points">The N 2D-points to be rotated</param>
public void RotatePoints <TDepth>(Matrix <TDepth> points) where TDepth : new()
{
Debug.Assert(typeof(TDepth) == typeof(float) || typeof(TDepth) == typeof(Double), "Only type of double or float is supported");
Debug.Assert(points.NumberOfChannels == 1 && points.Cols == 2, "The matrix must be a single channel Nx2 matrix where N is the number of points");
CvEnum.DepthType dt = CvInvoke.GetDepthType(typeof(TDepth));
using (Mat tmp = new Mat(points.Rows, 3, CvInvoke.GetDepthType(typeof(TDepth)), 1))
using (Mat rotationMatrix = new Mat(Rows, Cols, CvInvoke.GetDepthType(typeof(TDepth)), 1))
{
CvInvoke.CopyMakeBorder(points, tmp, 0, 0, 0, 1, Emgu.CV.CvEnum.BorderType.Constant, new MCvScalar(1.0));
if (typeof(double).Equals(typeof(TDepth)))
{
CopyTo(rotationMatrix);
}
else
{
ConvertTo(rotationMatrix, CvInvoke.GetDepthType(typeof(TDepth)));
}
CvInvoke.Gemm(
tmp,
rotationMatrix,
1.0,
null,
0.0,
points,
Emgu.CV.CvEnum.GemmType.Src2Transpose);
}
}
