/// <summary>
/// Transforms the given points using this transformation matrix.
/// </summary>
///
public PointH[] TransformPoints(params PointH[] points)
{
PointH[] r = new PointH[points.Length];
for (int j = 0; j < points.Length; j++)
{
r[j].X = elements[0] * points[j].X + elements[1] * points[j].Y + elements[2] * points[j].W;
r[j].Y = elements[3] * points[j].X + elements[4] * points[j].Y + elements[5] * points[j].W;
r[j].W = elements[6] * points[j].X + elements[7] * points[j].Y + points[j].W;
}
return(r);
}
/// <summary>
/// Compares two objects for equality.
/// </summary>
///
public override bool Equals(object obj)
{
if (obj is PointH)
{
PointH p = (PointH)obj;
if (px / pw == p.px / p.pw &&
py / pw == p.py / p.pw)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Converts to a Integer point by truncating the point coordinates.
/// </summary>
///
public static Point Truncate(PointH point)
{
return(new Point(
(int)System.Math.Truncate(point.px / point.pw),
(int)System.Math.Truncate(point.py / point.pw)));
}
/// <summary>
/// Converts to a Integer point by rounding the point coordinates.
/// </summary>
///
public static Point Round(PointH point)
{
return(new Point(
(int)System.Math.Round(point.px / point.pw),
(int)System.Math.Round(point.py / point.pw)));
}
/// <summary>
/// Converts to a Integer point by computing the ceiling of the point coordinates.
/// </summary>
///
public static Point Ceiling(PointH point)
{
return(new Point(
(int)System.Math.Ceiling(point.px / point.pw),
(int)System.Math.Ceiling(point.py / point.pw)));
}
/// <summary>
/// Add the values of two points.
/// </summary>
///
public PointH Add(PointH value)
{
return(this + value);
}
/// <summary>
/// Subtracts the values of two points.
/// </summary>
///
public PointH Subtract(PointH value)
{
return(this - value);
}