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package demos.xtrans;
import gleem.linalg.*;
/** A quadrilateral in which the vertices are three-dimensional
floating-point values. */
public class Quad3f {
private Vec3f[] 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 = 3;
private static final int NUM_VECS = 4;
/** Constructs a Quad3f in which all the vertices are set to the
origin. */
public Quad3f() {
vecs = new Vec3f[NUM_VECS];
for (int i = 0; i < NUM_VECS; i++) {
vecs[i] = new Vec3f();
}
}
/** Constructs a Quad3f in which the vertices are set to the
specified values. */
public Quad3f(Vec3f upperLeft,
Vec3f lowerLeft,
Vec3f lowerRight,
Vec3f 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, Vec3f val) {
vecs[which].set(val);
}
/** Returns the specified vertex. */
public Vec3f getVec(int which) {
return vecs[which];
}
/** Sets all four points of this quadrilateral. */
public void set(Quad3f 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 Quad3f times(float val) {
return new Quad3f(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 Quad3f plus(Quad3f val) {
return new Quad3f(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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