private static Transformer ScaleCorner(Vector2 point, Transformer startingTransformer, Matrix3x2 inverseMatrix, bool isRatio, bool isCenter, Vector2 linePoint, Vector2 lineDiagonalPoint, Func <Vector2, Vector2, Vector2, Vector2, Transformer> func)
{
Vector2 canvasPoint = Vector2.Transform(point, inverseMatrix);
if (isRatio)
{
Vector2 center = isCenter ? startingTransformer.Center : lineDiagonalPoint;
Vector2 footPoint = Math.FootPoint(canvasPoint, linePoint, center);
LineDistance lineDistance = new LineDistance(footPoint, linePoint, center);
Matrix3x2 scaleMatrix = Matrix3x2.CreateScale(LineDistance.Scale(lineDistance), center);
return(Transformer.Multiplies(startingTransformer, scaleMatrix));
}
else
{
Vector2 center = isCenter ? startingTransformer.Center * 2 - canvasPoint : lineDiagonalPoint;
Vector2 horizontal = startingTransformer.CenterRight - startingTransformer.CenterLeft;
Vector2 vertical = startingTransformer.CenterBottom - startingTransformer.CenterTop;
Vector2 returnPoint = canvasPoint;
Vector2 returnDiagonalPoint = center;
Vector2 returnHorizontalPoint = Math.IntersectionPoint(canvasPoint, (canvasPoint - horizontal), (center + vertical), center);
Vector2 returnVerticalPoint = Math.IntersectionPoint(canvasPoint, (canvasPoint - vertical), (center + horizontal), center);
return(func(returnPoint, returnDiagonalPoint, returnHorizontalPoint, returnVerticalPoint));
}
}
/// <summary> Scale of [Foot Point] betwwen [Center Point] / scale of [Point] betwwen [Center Point] (may be negative)</summary>
/// <param name="distance"> The distance </param>
/// <returns>Scale</returns>
public static float Scale(LineDistance distance)
{
float scale = distance.FC / distance.PC;
bool isReverse = (distance.FP < distance.FD);
return(isReverse ? scale : -scale);
}
private static Transformer ScaleAround(Vector2 point, Transformer startingTransformer, Matrix3x2 inverseMatrix, bool isRatio, bool isCenter, Vector2 linePoint, Vector2 lineDiagonalPoint, Func <Transformer, bool, Vector2, Transformer> func)
{
Vector2 canvasPoint = Vector2.Transform(point, inverseMatrix);
Vector2 footPoint = Math.FootPoint(canvasPoint, linePoint, lineDiagonalPoint);
if (isRatio)
{
Vector2 center = isCenter ? startingTransformer.Center : lineDiagonalPoint;
LineDistance distance = new LineDistance(footPoint, linePoint, center);
Matrix3x2 scaleMatrix = Matrix3x2.CreateScale(LineDistance.Scale(distance), center);
return(Transformer.Multiplies(startingTransformer, scaleMatrix));
}
else
{
Vector2 vector = footPoint - linePoint;
return(func(startingTransformer, isCenter, vector));
}
}
