public void ImageShouldDrawTransformedImage <TPixel>(TestImageProvider <TPixel> provider, PixelBlenderMode mode)
where TPixel : struct, IPixel <TPixel>
{
using (Image <TPixel> image = provider.GetImage())
using (var blend = Image.Load <TPixel>(TestFile.Create(TestImages.Bmp.Car).Bytes))
{
Matrix3x2 rotate = Matrix3x2Extensions.CreateRotationDegrees(45F);
Matrix3x2 scale = Matrix3x2Extensions.CreateScale(new SizeF(.25F, .25F));
Matrix3x2 matrix = rotate * scale;
// Lets center the matrix so we can tell whether any cut-off issues we may have belong to the drawing processor
Rectangle srcBounds = blend.Bounds();
Rectangle destBounds = TransformHelpers.GetTransformedBoundingRectangle(srcBounds, matrix);
Matrix3x2 centeredMatrix = TransformHelpers.GetCenteredTransformMatrix(srcBounds, destBounds, matrix);
// We pass a new rectangle here based on the dest bounds since we've offset the matrix
blend.Mutate(x => x.Transform(
centeredMatrix,
KnownResamplers.Bicubic,
new Rectangle(0, 0, destBounds.Width, destBounds.Height)));
var position = new Point((image.Width - blend.Width) / 2, (image.Height - blend.Height) / 2);
image.Mutate(x => x.DrawImage(blend, mode, .75F, position));
image.DebugSave(provider, new[] { "Transformed" });
}
}
/// <inheritdoc/>
protected override Matrix3x2 GetProcessingMatrix(Rectangle sourceRectangle, Rectangle destinationRectangle)
{
return(TransformHelpers.GetCenteredTransformMatrix(sourceRectangle, destinationRectangle, this.TransformMatrix));
}