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/*
* Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package demos.xtrans;
import gleem.linalg.*;
/** A quadrilateral in which the vertices are two-dimensional
* floating-point values.
*
* @author Kenneth Russell
*/
public class Quad2f {
private Vec2f[] vecs;
public static final int UPPER_LEFT = 0;
public static final int LOWER_LEFT = 1;
public static final int LOWER_RIGHT = 2;
public static final int UPPER_RIGHT = 2;
private static final int NUM_VECS = 4;
/** Constructs a Quad2f in which all the vertices are set to the
origin. */
public Quad2f() {
vecs = new Vec2f[NUM_VECS];
for (int i = 0; i < NUM_VECS; i++) {
vecs[i] = new Vec2f();
}
}
/** Constructs a Quad2f in which the vertices are set to the
specified values. */
public Quad2f(Vec2f upperLeft,
Vec2f lowerLeft,
Vec2f lowerRight,
Vec2f upperRight) {
this();
setVec(0, upperLeft);
setVec(1, lowerLeft);
setVec(2, lowerRight);
setVec(3, upperRight);
}
/** Sets the specified vertex to the specified value. */
public void setVec(int which, Vec2f val) {
vecs[which].set(val);
}
/** Returns the specified vertex. */
public Vec2f getVec(int which) {
return vecs[which];
}
/** Sets all four points of this quadrilateral. */
public void set(Quad2f quad) {
for (int i = 0; i < NUM_VECS; i++) {
setVec(i, quad.getVec(i));
}
}
/** Returns a newly-constructed Quad2f in which all vertices have
been multiplied in scalar fashion by the passed value. */
public Quad2f times(float val) {
return new Quad2f(getVec(0).times(val),
getVec(1).times(val),
getVec(2).times(val),
getVec(3).times(val));
}
/** Returns a newly-constructed Quad2f in which the vertices are the
component-wise sums of this quad and the passed quad. */
public Quad2f plus(Quad2f val) {
return new Quad2f(getVec(0).plus(val.getVec(0)),
getVec(1).plus(val.getVec(1)),
getVec(2).plus(val.getVec(2)),
getVec(3).plus(val.getVec(3)));
}
}
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