diff options
Diffstat (limited to 'engine/src/core/com/jme3/math/Rectangle.java')
| -rw-r--r-- | engine/src/core/com/jme3/math/Rectangle.java | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/engine/src/core/com/jme3/math/Rectangle.java b/engine/src/core/com/jme3/math/Rectangle.java new file mode 100644 index 0000000..310270c --- /dev/null +++ b/engine/src/core/com/jme3/math/Rectangle.java @@ -0,0 +1,197 @@ +/*
+ * Copyright (c) 2009-2010 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions 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 'jMonkeyEngine' nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jme3.math;
+
+import com.jme3.export.*;
+import java.io.IOException;
+
+
+/**
+ *
+ * <code>Rectangle</code> defines a finite plane within three dimensional space
+ * that is specified via three points (A, B, C). These three points define a
+ * triangle with the forth point defining the rectangle ((B + C) - A.
+ *
+ * @author Mark Powell
+ * @author Joshua Slack
+ */
+
+public final class Rectangle implements Savable, Cloneable, java.io.Serializable {
+
+ static final long serialVersionUID = 1;
+
+ private Vector3f a, b, c;
+
+ /**
+ * Constructor creates a new <code>Rectangle</code> with no defined corners.
+ * A, B, and C must be set to define a valid rectangle.
+ *
+ */
+ public Rectangle() {
+ a = new Vector3f();
+ b = new Vector3f();
+ c = new Vector3f();
+ }
+
+ /**
+ * Constructor creates a new <code>Rectangle</code> with defined A, B, and C
+ * points that define the area of the rectangle.
+ *
+ * @param a
+ * the first corner of the rectangle.
+ * @param b
+ * the second corner of the rectangle.
+ * @param c
+ * the third corner of the rectangle.
+ */
+ public Rectangle(Vector3f a, Vector3f b, Vector3f c) {
+ this.a = a;
+ this.b = b;
+ this.c = c;
+ }
+
+ /**
+ * <code>getA</code> returns the first point of the rectangle.
+ *
+ * @return the first point of the rectangle.
+ */
+ public Vector3f getA() {
+ return a;
+ }
+
+ /**
+ * <code>setA</code> sets the first point of the rectangle.
+ *
+ * @param a
+ * the first point of the rectangle.
+ */
+ public void setA(Vector3f a) {
+ this.a = a;
+ }
+
+ /**
+ * <code>getB</code> returns the second point of the rectangle.
+ *
+ * @return the second point of the rectangle.
+ */
+ public Vector3f getB() {
+ return b;
+ }
+
+ /**
+ * <code>setB</code> sets the second point of the rectangle.
+ *
+ * @param b
+ * the second point of the rectangle.
+ */
+ public void setB(Vector3f b) {
+ this.b = b;
+ }
+
+ /**
+ * <code>getC</code> returns the third point of the rectangle.
+ *
+ * @return the third point of the rectangle.
+ */
+ public Vector3f getC() {
+ return c;
+ }
+
+ /**
+ * <code>setC</code> sets the third point of the rectangle.
+ *
+ * @param c
+ * the third point of the rectangle.
+ */
+ public void setC(Vector3f c) {
+ this.c = c;
+ }
+
+ /**
+ * <code>random</code> returns a random point within the plane defined by:
+ * A, B, C, and (B + C) - A.
+ *
+ * @return a random point within the rectangle.
+ */
+ public Vector3f random() {
+ return random(null);
+ }
+
+ /**
+ * <code>random</code> returns a random point within the plane defined by:
+ * A, B, C, and (B + C) - A.
+ *
+ * @param result
+ * Vector to store result in
+ * @return a random point within the rectangle.
+ */
+ public Vector3f random(Vector3f result) {
+ if (result == null) {
+ result = new Vector3f();
+ }
+
+ float s = FastMath.nextRandomFloat();
+ float t = FastMath.nextRandomFloat();
+
+ float aMod = 1.0f - s - t;
+ result.set(a.mult(aMod).addLocal(b.mult(s).addLocal(c.mult(t))));
+ return result;
+ }
+
+ public void write(JmeExporter e) throws IOException {
+ OutputCapsule capsule = e.getCapsule(this);
+ capsule.write(a, "a", Vector3f.ZERO);
+ capsule.write(b, "b", Vector3f.ZERO);
+ capsule.write(c, "c", Vector3f.ZERO);
+ }
+
+ public void read(JmeImporter e) throws IOException {
+ InputCapsule capsule = e.getCapsule(this);
+ a = (Vector3f) capsule.readSavable("a", Vector3f.ZERO.clone());
+ b = (Vector3f) capsule.readSavable("b", Vector3f.ZERO.clone());
+ c = (Vector3f) capsule.readSavable("c", Vector3f.ZERO.clone());
+ }
+
+ @Override
+ public Rectangle clone() {
+ try {
+ Rectangle r = (Rectangle) super.clone();
+ r.a = a.clone();
+ r.b = b.clone();
+ r.c = c.clone();
+ return r;
+ } catch (CloneNotSupportedException e) {
+ throw new AssertionError();
+ }
+ }
+}
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