/// <summary>
/// Creates a new target canvas to contain the results of the matrix transform.
/// </summary>
/// <param name="sourceRectangle">The source rectangle.</param>
/// <param name="processMatrix">The processing matrix.</param>
protected void CreateNewCanvas(Rectangle sourceRectangle, Matrix3x2 processMatrix)
{
Matrix3x2 sizeMatrix;
this.CanvasRectangle = Matrix3x2.Invert(processMatrix, out sizeMatrix)
? ImageMaths.GetBoundingRectangle(sourceRectangle, sizeMatrix)
: sourceRectangle;
}
/// <summary>
/// Creates a new target to contain the results of the matrix transform.
/// </summary>
/// <param name="target">Target image to apply the process to.</param>
/// <param name="sourceRectangle">The source rectangle.</param>
/// <param name="processMatrix">The processing matrix.</param>
protected static void CreateNewTarget(ImageBase <TColor, TPacked> target, Rectangle sourceRectangle, Matrix3x2 processMatrix)
{
Matrix3x2 sizeMatrix;
if (Matrix3x2.Invert(processMatrix, out sizeMatrix))
{
Rectangle rectangle = ImageMaths.GetBoundingRectangle(sourceRectangle, sizeMatrix);
target.SetPixels(rectangle.Width, rectangle.Height, new TColor[rectangle.Width * rectangle.Height]);
}
}
public void ThenShouldBeAt00And5By5GivenPoints5UnitsApart(
int pointX1,
int pointY1,
int pointX2,
int pointY2)
{
// Arrange // Act
var rectangle = ImageMaths.GetBoundingRectangle(
new Point(pointX1, pointY1),
new Point(pointX2, pointY2));
// Assert
Assert.That(
rectangle,
Is.EqualTo(new Rectangle(pointX1, pointY1, pointX2 - pointX1, pointY2 - pointY1)));
}
