/**
For each pixel location in the new buffer P' (NewX, NewY), do:
Find corresponding old location, P = W-1.P'
Validate that this old location lie inside the original image boundary (i.e. 0 ≤ OldX < W, 0 ≤ Old Y < H). Otherwise, set the new empty pixel to 0 and continue to next location.
If Validated, apply Bilinear Interpolation Algorithm to get the new pixel value, as follows:(Refer to above figure)
*/
public BufferedImage apply_transformation_matrix_to_bitmap_or_buffer(Matrix _transformations_matrix, BufferedImage _src_img, int _new_width, int _new_height, TextBox _console)
{
BufferedImage ret = new BufferedImage(_new_width, _new_height);
BilinearInterpolation obj_bi_lin_interpol = new BilinearInterpolation();
for (int i = 0; i < _new_width; i++)
{
for (int j = 0; j < _new_height; j++)
{
PointF[] points = {
new PointF(i, j)
};
_transformations_matrix.TransformPoints(points);
_console.Text += "P = (" + points[0].X + ", " + points[0].Y + ")";
_console.Text += Environment.NewLine;
_console.Text += "P' = (" + i + ", " + j + ")";
_console.Text += Environment.NewLine;
Color _color = Color.FromArgb(0);
if(points[0].X >= 0 && points[0].X < _src_img.width && points[0].Y >= 0 && points[0].Y < _src_img.height)
_color = obj_bi_lin_interpol.calculate(_src_img, points[0].X, points[0].Y);
ret.buffer[i, j] = _color;
}
}
return ret;
}
/**
For each pixel location in the new buffer P' (NewX, NewY), do:
Find corresponding old location, P = W-1.P'
Validate that this old location lie inside the original image boundary (i.e. 0 ≤ OldX < W, 0 ≤ Old Y < H). Otherwise, set the new empty pixel to 0 and continue to next location.
If Validated, apply Bilinear Interpolation Algorithm to get the new pixel value, as follows:(Refer to above figure)
*/
public bufferedLockBitmap apply_transformation_matrix_to_bitmap_or_buffer(Matrix _transformations_matrix, bufferedLockBitmap _src_img, int _new_width, int _new_height)
{
Bitmap temp = new Bitmap(_new_width, _new_height);
bufferedLockBitmap ret = new bufferedLockBitmap(temp);
ret.LockBits();
BilinearInterpolation obj_bi_lin_interpol = new BilinearInterpolation();
for (int i = 0; i < _new_width; i++)
{
for (int j = 0; j < _new_height; j++)
{
PointF[] points = {
new PointF(i, j)
};
_transformations_matrix.TransformPoints(points);
Color _color = Color.FromArgb(0);
if (points[0].X >= 0 && points[0].X < _src_img.source.Width && points[0].Y >= 0 && points[0].Y < _src_img.source.Height)
_color = obj_bi_lin_interpol.calculate(_src_img, points[0].X, points[0].Y, _new_width, _new_height);
ret.SetPixel(i, j, _color);
}
}
ret.UnlockBits();
return ret;
}
