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authorKenneth Russel <[email protected]>2005-10-24 19:21:28 +0000
committerKenneth Russel <[email protected]>2005-10-24 19:21:28 +0000
commit6873f65775af236ed270fcbd08661f5b53ba3598 (patch)
tree6fcefdc3a9429d7d3071b1464c11d40fa7bc3ab9 /src/demos/xtrans/Quad2f.java
parent538be101e7bce7788c82e1b254a66deb5d35bb56 (diff)
Merged JSR-231 branch on to the main JOGL trunk. The main trunk now
contains the evolving JSR-231 Reference Implementation and the JSR-231 branch is permanently closed. git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@144 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4
Diffstat (limited to 'src/demos/xtrans/Quad2f.java')
-rwxr-xr-xsrc/demos/xtrans/Quad2f.java74
1 files changed, 74 insertions, 0 deletions
diff --git a/src/demos/xtrans/Quad2f.java b/src/demos/xtrans/Quad2f.java
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+++ b/src/demos/xtrans/Quad2f.java
@@ -0,0 +1,74 @@
+package demos.xtrans;
+
+import gleem.linalg.*;
+
+/** A quadrilateral in which the vertices are two-dimensional
+ floating-point values. */
+
+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)));
+ }
+}