/// <summary>
/// Applies a transformation to the current DrawInfo.
/// </summary>
/// <param name="target">The DrawInfo instance to be filled with the result.</param>
/// <param name="translation">The amount by which to translate the current position.</param>
/// <param name="scale">The amount by which to scale.</param>
/// <param name="rotation">The amount by which to rotate.</param>
/// <param name="origin">The center of rotation and scale.</param>
/// <param name="colour">An optional color to be applied multiplicatively.</param>
/// <param name="blending">An optional blending change.</param>
public void ApplyTransform(ref DrawInfo target, Vector2 translation, Vector2 scale, float rotation, Vector2 origin, Color4?colour = null, BlendingInfo?blending = null)
{
target.Matrix = Matrix;
target.MatrixInverse = MatrixInverse;
if (translation != Vector2.Zero)
{
MatrixExtensions.TranslateFromLeft(ref target.Matrix, translation);
MatrixExtensions.TranslateFromRight(ref target.MatrixInverse, -translation);
}
if (rotation != 0)
{
MatrixExtensions.RotateFromLeft(ref target.Matrix, rotation);
MatrixExtensions.RotateFromRight(ref target.MatrixInverse, -rotation);
}
if (scale != Vector2.One)
{
Vector2 inverseScale = new Vector2(1.0f / scale.X, 1.0f / scale.Y);
MatrixExtensions.ScaleFromLeft(ref target.Matrix, scale);
MatrixExtensions.ScaleFromRight(ref target.MatrixInverse, inverseScale);
}
if (origin != Vector2.Zero)
{
MatrixExtensions.TranslateFromLeft(ref target.Matrix, -origin);
MatrixExtensions.TranslateFromRight(ref target.MatrixInverse, origin);
}
//target.MatrixInverse = target.Matrix;
//MatrixExtensions.FastInvert(ref target.MatrixInverse);
target.Colour = Colour;
if (colour != null)
{
target.Colour.R *= colour.Value.R;
target.Colour.G *= colour.Value.G;
target.Colour.B *= colour.Value.B;
target.Colour.A *= colour.Value.A;
}
if (blending == null)
{
Blending.Copy(ref target.Blending);
}
else
{
blending.Value.Copy(ref target.Blending);
}
}
/// <summary>
/// Applies a transformation to the current DrawInfo.
/// </summary>
/// <param name="target">The DrawInfo instance to be filled with the result.</param>
/// <param name="translation">The amount by which to translate the current position.</param>
/// <param name="scale">The amount by which to scale.</param>
/// <param name="rotation">The amount by which to rotate.</param>
/// <param name="origin">The center of rotation and scale.</param>
/// <param name="shear">The shear amounts for both directions.</param>
/// <param name="colour">An optional color to be applied multiplicatively.</param>
/// <param name="blending">An optional blending change.</param>
public void ApplyTransform(ref DrawInfo target, Vector2 translation, Vector2 scale, float rotation, Vector2 shear, Vector2 origin, Color4?colour = null, BlendingInfo?blending = null)
{
target.Matrix = Matrix;
target.MatrixInverse = MatrixInverse;
if (translation != Vector2.Zero)
{
MatrixExtensions.TranslateFromLeft(ref target.Matrix, translation);
MatrixExtensions.TranslateFromRight(ref target.MatrixInverse, -translation);
}
if (rotation != 0)
{
float radians = MathHelper.DegreesToRadians(rotation);
MatrixExtensions.RotateFromLeft(ref target.Matrix, radians);
MatrixExtensions.RotateFromRight(ref target.MatrixInverse, -radians);
}
if (shear != Vector2.Zero)
{
MatrixExtensions.ShearFromLeft(ref target.Matrix, -shear);
MatrixExtensions.ShearFromRight(ref target.MatrixInverse, shear);
}
if (scale != Vector2.One)
{
Vector2 inverseScale = new Vector2(1.0f / scale.X, 1.0f / scale.Y);
MatrixExtensions.ScaleFromLeft(ref target.Matrix, scale);
MatrixExtensions.ScaleFromRight(ref target.MatrixInverse, inverseScale);
}
if (origin != Vector2.Zero)
{
MatrixExtensions.TranslateFromLeft(ref target.Matrix, -origin);
MatrixExtensions.TranslateFromRight(ref target.MatrixInverse, origin);
}
//========================================================================================
//== Uncomment the following 2 lines to use a ground-truth matrix inverse for debugging ==
//========================================================================================
//target.MatrixInverse = target.Matrix;
//MatrixExtensions.FastInvert(ref target.MatrixInverse);
if (colour != null)
{
Color4 targetLinear = colour.Value.toLinear();
Color4 sourceLinear = Colour.toLinear();
target.Colour = new Color4(
targetLinear.R * sourceLinear.R,
targetLinear.G * sourceLinear.G,
targetLinear.B * sourceLinear.B,
targetLinear.A * sourceLinear.A).toSRGB();
}
else
{
target.Colour = Colour;
}
if (blending == null)
{
Blending.Copy(ref target.Blending);
}
else
{
blending.Value.Copy(ref target.Blending);
}
}
