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/*
* $RCSfile$
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision$
* $Date$
* $State$
*/
package javax.vecmath;
import java.lang.Math;
/**
* A 3 element point that is represented by single precision floating point
* x,y,z coordinates.
*
*/
public class Point3f extends Tuple3f implements java.io.Serializable {
// Compatible with 1.1
static final long serialVersionUID = -8689337816398030143L;
/**
* Constructs and initializes a Point3f from the specified xyz coordinates.
* @param x the x coordinate
* @param y the y coordinate
* @param z the z coordinate
*/
public Point3f(float x, float y, float z)
{
super(x,y,z);
}
/**
* Constructs and initializes a Point3f from the array of length 3.
* @param p the array of length 3 containing xyz in order
*/
public Point3f(float[] p)
{
super(p);
}
/**
* Constructs and initializes a Point3f from the specified Point3f.
* @param p1 the Point3f containing the initialization x y z data
*/
public Point3f(Point3f p1)
{
super(p1);
}
/**
* Constructs and initializes a Point3f from the specified Point3d.
* @param p1 the Point3d containing the initialization x y z data
*/
public Point3f(Point3d p1)
{
super(p1);
}
/**
* Constructs and initializes a Point3f from the specified Tuple3f.
* @param t1 the Tuple3f containing the initialization x y z data
*/
public Point3f(Tuple3f t1)
{
super(t1);
}
/**
* Constructs and initializes a Point3f from the specified Tuple3d.
* @param t1 the Tuple3d containing the initialization x y z data
*/
public Point3f(Tuple3d t1)
{
super(t1);
}
/**
* Constructs and initializes a Point3f to (0,0,0).
*/
public Point3f()
{
super();
}
/**
* Computes the square of the distance between this point and
* point p1.
* @param p1 the other point
* @return the square of the distance
*/
public final float distanceSquared(Point3f p1)
{
float dx, dy, dz;
dx = this.x-p1.x;
dy = this.y-p1.y;
dz = this.z-p1.z;
return dx*dx+dy*dy+dz*dz;
}
/**
* Computes the distance between this point and point p1.
* @param p1 the other point
* @return the distance
*/
public final float distance(Point3f p1)
{
float dx, dy, 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);
}
/**
* 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).
* @param p1 the other point
* @return the L-1 distance
*/
public final float distanceL1(Point3f p1)
{
return( Math.abs(this.x-p1.x) + Math.abs(this.y-p1.y) + Math.abs(this.z-p1.z));
}
/**
* 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)].
* @param p1 the other point
* @return the L-infinite distance
*/
public final 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)));
}
/**
* Multiplies each of the x,y,z components of the Point4f parameter
* by 1/w and places the projected values into this point.
* @param p1 the source Point4f, which is not modified
*/
public final void project(Point4f p1)
{
float oneOw;
oneOw = 1/p1.w;
x = p1.x*oneOw;
y = p1.y*oneOw;
z = p1.z*oneOw;
}
}
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