/// <summary>Computes the distance between this point and point p1.</summary>
/// <remarks>Computes the distance between this point and point p1.</remarks>
/// <param name="p1">the other point</param>
/// <returns>the distance</returns>
public float Distance(Point3f p1)
{
float dx;
float dy;
float dz;
dx = this.x - p1.x;
dy = this.y - p1.y;
dz = this.z - p1.z;
return (float)Math.Sqrt(dx * dx + dy * dy + dz * dz);
}
/// <summary>
/// Transforms the point parameter with this Matrix4f and
/// places the result back into point.
/// </summary>
/// <remarks>
/// Transforms the point parameter with this Matrix4f and
/// places the result back into point. The fourth element of the
/// point input paramter is assumed to be one.
/// </remarks>
/// <param name="point">the input point to be transformed.</param>
public void Transform(Point3f point)
{
float x;
float y;
x = m00 * point.x + m01 * point.y + m02 * point.z + m03;
y = m10 * point.x + m11 * point.y + m12 * point.z + m13;
point.z = m20 * point.x + m21 * point.y + m22 * point.z + m23;
point.x = x;
point.y = y;
}
/// <summary>Constructs and initializes a Point3f from the specified Point3f.</summary>
/// <remarks>Constructs and initializes a Point3f from the specified Point3f.</remarks>
/// <param name="p1">the Point3f containing the initialization x y z data</param>
public Point3f(Point3f p1)
: base(p1)
{
}
// Compatible with 1.1
/// <summary>
/// Computes the square of the distance between this point and
/// point p1.
/// </summary>
/// <remarks>
/// Computes the square of the distance between this point and
/// point p1.
/// </remarks>
/// <param name="p1">the other point</param>
/// <returns>the square of the distance</returns>
public float DistanceSquared(Point3f p1)
{
float dx;
float dy;
float dz;
dx = this.x - p1.x;
dy = this.y - p1.y;
dz = this.z - p1.z;
return dx * dx + dy * dy + dz * dz;
}
/// <summary>
/// Computes the L-infinite distance between this point and
/// point p1.
/// </summary>
/// <remarks>
/// Computes the L-infinite distance between this point and
/// point p1. The L-infinite distance is equal to
/// MAX[abs(x1-x2), abs(y1-y2), abs(z1-z2)].
/// </remarks>
/// <param name="p1">the other point</param>
/// <returns>the L-infinite distance</returns>
public float DistanceLinf(Point3f p1)
{
float tmp;
tmp = Math.Max(Math.Abs(this.x - p1.x), Math.Abs(this.y - p1.y));
return (Math.Max(tmp, Math.Abs(this.z - p1.z)));
}
/// <summary>
/// Computes the L-1 (Manhattan) distance between this point and
/// point p1.
/// </summary>
/// <remarks>
/// Computes the L-1 (Manhattan) distance between this point and
/// point p1. The L-1 distance is equal to:
/// abs(x1-x2) + abs(y1-y2) + abs(z1-z2).
/// </remarks>
/// <param name="p1">the other point</param>
/// <returns>the L-1 distance</returns>
public float DistanceL1(Point3f p1)
{
return (Math.Abs(this.x - p1.x) + Math.Abs(this.y - p1.y) + Math.Abs(this.z - p1.
z));
}
/// <summary>
/// Transforms the point parameter with this Matrix4d and
/// places the result back into point.
/// </summary>
/// <remarks>
/// Transforms the point parameter with this Matrix4d and
/// places the result back into point. The fourth element of the
/// point input parameter is assumed to be one.
/// </remarks>
/// <param name="point">the input point to be transformed.</param>
public void Transform(Point3f point)
{
float x;
float y;
x = (float)(m00 * point.x + m01 * point.y + m02 * point.z + m03);
y = (float)(m10 * point.x + m11 * point.y + m12 * point.z + m13);
point.z = (float)(m20 * point.x + m21 * point.y + m22 * point.z + m23);
point.x = x;
point.y = y;
}
