/// <summary>
/// Perform all Transformation from the list
/// </summary>
/// <returns>The resulting matrix after all the transform</returns>
public double[] ApplyTransforms()
{
// double[] matrix = new double[] { 1f, 0f, 0f, 1f, 0f, 0f };
Matrix2D matrix = new Matrix2D();
foreach (DrawingTransform transform in _transformList)
{
switch (transform.TransformType)
{
case TranformType.Translate:
matrix.T1 += transform.Data[0];
matrix.T2 += transform.Data[1];
// matrix[4] += transform.Data[0];
// matrix[5] += transform.Data[1];
break;
case TranformType.Scale:
matrix.X1 *= transform.Data[0];
matrix.Y1 *= transform.Data[0];
matrix.T1 *= transform.Data[0];
matrix.X2 *= transform.Data[1];
matrix.Y2 *= transform.Data[1];
matrix.T2 *= transform.Data[1];
// matrix[0] *= transform.Data[0];
// matrix[1] *= transform.Data[0];
// matrix[4] *= transform.Data[1];
// matrix[2] *= transform.Data[1];
// matrix[3] *= transform.Data[1];
// matrix[5] *= transform.Data[0];
break;
case TranformType.Rotate:
double angle = transform.Data[0];
double sin = Math.Sin(angle);
double cos = Math.Cos(angle);
Matrix2D temp = (Matrix2D)matrix.Clone();
matrix.X1 = temp.X1 * cos + temp.X2 * sin;
matrix.X2 = temp.Y1 * cos + temp.Y2 * sin;
matrix.T1 = temp.T1 * cos + temp.T2 * sin;
matrix.Y1 = -temp.X1 * sin + temp.X2 * cos;
matrix.Y2 = -temp.Y1 * sin + temp.Y2 * cos;
matrix.T2 = -temp.T1 * sin + temp.T2 * cos;
// double[] temp = (double[])matrix.Clone();
//
// matrix[0] = temp[0] * cos - temp[2] * sin;
// matrix[1] = temp[1] * cos - temp[3] * sin;
// matrix[4] = temp[4] * cos - temp[5] * sin;
// matrix[2] = temp[0] * sin + temp[2] * cos;
// matrix[3] = temp[1] * sin + temp[3] * cos;
// matrix[5] = temp[4] * sin + temp[5] * cos;
break;
default:
throw new Exception("Unsupported transform type passed in");
}
}
Matrix = matrix;
return(matrix);
}
/// <summary>
/// Apply the transform using the supplied matrix
/// </summary>
/// <param name="matrix">the matrix to be applied (format if x1,y1,x2,y2,t1,t2)</param>
public void Transform(Matrix2D matrix)
{
if (_imageSource == null)
{
throw new RenderingVerificationException("ImageSource not Assigned, cannot transform a unknow image");
}
if (matrix == null)
{
throw new ArgumentException("Invalid argument passed in, must be a valid instance (not set to null) of Matrix2D or an array of double of length " + Matrix2D.Length);
}
if (matrix.IsInvertible == false)
{
throw new Matrix2DException("Matrix passed in is not inversible, cannot transform using this matrix (matrix passed in : )" + matrix.ToString());
}
if (matrix.IsIdentity)
{
_imageTransformed = (IImageAdapter)_imageSource.Clone();
return;
}
// Create the IImageAdapter to return
int width = _imageSource.Width;
int height = _imageSource.Height;
if (_resizeToFitOutputImage)
{
double x = 0.0;
double y = 0.0;
Point topLeft = new Point((int)(x + Math.Sign(x) * 0.5), (int)(y + Math.Sign(y) * 0.5));
x = matrix.X1 * width;
y = matrix.X2 * width;
Point topRight = new Point((int)(x + Math.Sign(x) * 0.5), (int)(y + Math.Sign(y) * 0.5));
x = matrix.X1 * width + matrix.Y1 * height;
y = matrix.X2 * width + matrix.Y2 * height;
Point bottomRight = new Point((int)(x + Math.Sign(x) * 0.5), (int)(y + Math.Sign(y) * 0.5));
x = matrix.Y1 * height;
y = matrix.Y2 * height;
Point bottomLeft = new Point((int)(x + Math.Sign(x) * 0.5), (int)(y + Math.Sign(y) * 0.5));
width = (int)Math.Max(Math.Abs(bottomRight.X - topLeft.X), Math.Abs(topRight.X - bottomLeft.X));
height = (int)Math.Max(Math.Abs(bottomRight.Y - topLeft.Y), Math.Abs(topRight.Y - bottomLeft.Y));
}
_imageTransformed = new ImageAdapter(width, height, _unassignedColor);
// Scale down imnage if needed (average pixels)
//
double horizontalScaling = double.NaN;
if (matrix.X1 != 0)
{
horizontalScaling = Math.Sqrt(Math.Abs(matrix.Determinant * matrix.Y2 / matrix.X1));
}
else
{
horizontalScaling = Math.Sqrt(Math.Abs(matrix.Determinant * matrix.Y1 / matrix.X2));
}
double verticalScaling = Math.Sqrt(matrix.Determinant / horizontalScaling);
IImageAdapter scaledImage = BilinearInterpolator.ScaleDown(horizontalScaling, verticalScaling, _imageSource);
// Interpolate image (if scaling up and/or rotation applied to image)
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
double ix = 0.0;
double iy = 0.0;
ConvertCoordinates(matrix, x, y, out ix, out iy);
_imageTransformed[x, y] = _interpolationMethod(ix, iy, scaledImage, _unassignedColor);
}
}
}
static Matrix2D()
{
Identity = new Matrix2D(1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
}
/// <summary>
/// Divide a matrix by another one
/// NOT IMPLEMENTED YET, contact the avalon tool team if you need this feature
/// </summary>
/// <param name="matrix1">The original matrix</param>
/// <param name="matrix2">The matrix to divide by</param>
/// <returns>The resulting matrix</returns>
public static Matrix2D operator /(Matrix2D matrix1, Matrix2D matrix2)
{
Matrix2D retVal = new Matrix2D();
throw new NotImplementedException("Not implemented, contact the Avalon tool team if you need this feature");
}
/// <summary>
/// Create an copy of a Matrix2D class
/// </summary>
/// <param name="matrix2D">The Matrix2D to copy</param>
public Matrix2D(Matrix2D matrix2D) : this()
{
_matrix = (double[])matrix2D._matrix.Clone();
}
