Merged changes from dev-1_4 branch into the main trunk.

NOTE: all 1.4 development will now proceed on the main trunk. The dev-1_4 branch is closed.


git-svn-id: https://svn.java.net/svn/vecmath~svn/trunk@55 dd45e54d-f42e-c781-df72-dca083a658b1

1 files changed, 440 insertions, 0 deletions

diff --git a/src/javax/vecmath/Tuple2i.java b/src/javax/vecmath/Tuple2i.java
new file mode 100644
index 0000000..e1a1d18
--- /dev/null
+++ b/src/javax/vecmath/Tuple2i.java
@@ -0,0 +1,440 @@
+/*
+ * $RCSfile$
+ *
+ * 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 2-element tuple represented by signed integer x,y
+ * coordinates.
+ *
+ * @since vecmath 1.4
+ */
+public abstract class Tuple2i implements java.io.Serializable, Cloneable {
+
+    static final long serialVersionUID = -3555701650170169638L;
+
+    /**
+     * The x coordinate.
+     */
+    public int x;
+
+    /**
+     * The y coordinate.
+     */
+    public int y;
+
+
+    /**
+     * Constructs and initializes a Tuple2i from the specified
+     * x and y coordinates.
+     * @param x the x coordinate
+     * @param y the y coordinate
+     */
+    public Tuple2i(int x, int y) {
+	this.x = x;
+	this.y = y;
+    }
+
+
+    /**
+     * Constructs and initializes a Tuple2i from the array of length 2.
+     * @param t the array of length 2 containing x and y in order.
+     */
+    public Tuple2i(int[] t) {
+	this.x = t[0];
+	this.y = t[1];
+    }
+
+
+    /**
+     * Constructs and initializes a Tuple2i from the specified Tuple2i.
+     * @param t1 the Tuple2i containing the initialization x and y
+     * data.
+     */
+    public Tuple2i(Tuple2i t1) {
+	this.x = t1.x;
+	this.y = t1.y;
+    }
+
+
+    /**
+     * Constructs and initializes a Tuple2i to (0,0).
+     */
+    public Tuple2i() {
+	this.x = 0;
+	this.y = 0;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the specified x and y
+     * coordinates.
+     * @param x the x coordinate
+     * @param y the y coordinate
+     */
+    public final void set(int x, int y) {
+	this.x = x;
+	this.y = y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the specified coordinates in the
+     * array of length 2.
+     * @param t the array of length 2 containing x and y in order.
+     */
+    public final void set(int[] t) {
+	this.x = t[0];
+	this.y = t[1];
+    }
+
+
+    /**
+     * Sets the value of this tuple to the value of tuple t1.
+     * @param t1 the tuple to be copied
+     */
+    public final void set(Tuple2i t1) {
+	this.x = t1.x;
+	this.y = t1.y;
+    }
+
+
+    /**
+     * Copies the values of this tuple into the array t.
+     * @param t is the array
+     */
+    public final void get(int[] t) {
+	t[0] = this.x;
+	t[1] = this.y;
+    }
+
+
+    /**
+     * Copies the values of this tuple into the tuple t.
+     * @param t is the target tuple
+     */
+    public final void get(Tuple2i t) {
+	t.x = this.x;
+	t.y = this.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the sum of tuples t1 and t2.
+     * @param t1 the first tuple
+     * @param t2 the second tuple
+     */
+    public final void add(Tuple2i t1, Tuple2i t2) {
+	this.x = t1.x + t2.x;
+	this.y = t1.y + t2.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the sum of itself and t1.
+     * @param t1 the other tuple
+     */
+    public final void add(Tuple2i t1) {
+	this.x += t1.x;
+	this.y += t1.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the difference
+     * of tuples t1 and t2 (this = t1 - t2).
+     * @param t1 the first tuple
+     * @param t2 the second tuple
+     */
+    public final void sub(Tuple2i t1, Tuple2i t2) {
+	this.x = t1.x - t2.x;
+	this.y = t1.y - t2.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the difference
+     * of itself and t1 (this = this - t1).
+     * @param t1 the other tuple
+     */
+    public final void sub(Tuple2i t1) {
+	this.x -= t1.x;
+	this.y -= t1.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the negation of tuple t1.
+     * @param t1 the source tuple
+     */
+    public final void negate(Tuple2i t1) {
+	this.x = -t1.x;
+	this.y = -t1.y;
+    }
+
+
+    /**
+     * Negates the value of this tuple in place.
+     */
+    public final void negate() {
+	this.x = -this.x;
+	this.y = -this.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the scalar multiplication
+     * of tuple t1.
+     * @param s the scalar value
+     * @param t1 the source tuple
+     */
+    public final void scale(int s, Tuple2i t1) {
+	this.x = s*t1.x;
+	this.y = s*t1.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the scalar multiplication
+     * of the scale factor with this.
+     * @param s the scalar value
+     */
+    public final void scale(int s) {
+	this.x *= s;
+	this.y *= s;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the scalar multiplication
+     * of tuple t1 plus tuple t2 (this = s*t1 + t2).
+     * @param s the scalar value
+     * @param t1 the tuple to be multipled
+     * @param t2 the tuple to be added
+     */
+    public final void scaleAdd(int s, Tuple2i t1, Tuple2i t2) {
+	this.x = s*t1.x + t2.x;
+	this.y = s*t1.y + t2.y;
+    }
+
+
+    /**
+     * Sets the value of this tuple to the scalar multiplication
+     * of itself and then adds tuple t1 (this = s*this + t1).
+     * @param s the scalar value
+     * @param t1 the tuple to be added
+     */
+    public final void scaleAdd(int s, Tuple2i t1) {
+        this.x = s*this.x + t1.x;
+        this.y = s*this.y + t1.y;
+    }
+
+
+    /**
+     * Returns a string that contains the values of this Tuple2i.
+     * The form is (x,y).
+     * @return the String representation
+     */
+    public String toString() {
+        return "(" + this.x + ", " + this.y + ")";
+    }
+
+
+    /**
+     * Returns true if the Object t1 is of type Tuple2i and all of the
+     * data members of t1 are equal to the corresponding data members in
+     * this Tuple2i.
+     * @param t1  the object with which the comparison is made
+     */
+    public boolean equals(Object t1) {
+        try {
+	    Tuple2i t2 = (Tuple2i) t1;
+	    return(this.x == t2.x && this.y == t2.y);
+        }
+        catch (NullPointerException e2) {
+	    return false;
+	}
+        catch (ClassCastException e1) {
+	    return false;
+	}
+    }
+
+
+    /**
+     * Returns a hash code value based on the data values in this
+     * object.  Two different Tuple2i objects with identical data values
+     * (i.e., Tuple2i.equals returns true) will return the same hash
+     * code value.  Two objects with different data members may return the
+     * same hash value, although this is not likely.
+     * @return the integer hash code value
+     */
+    public int hashCode() {
+	long bits = 1L;
+	bits = 31L * bits + (long)x;
+	bits = 31L * bits + (long)y;
+	return (int) (bits ^ (bits >> 32));
+    }
+
+
+    /**
+     *  Clamps the tuple parameter to the range [low, high] and
+     *  places the values into this tuple.
+     *  @param min   the lowest value in the tuple after clamping
+     *  @param max  the highest value in the tuple after clamping
+     *  @param t   the source tuple, which will not be modified
+     */
+    public final void clamp(int min, int max, Tuple2i t) {
+        if( t.x > max ) {
+	    x = max;
+        } else if( t.x < min ) {
+	    x = min;
+        } else {
+	    x = t.x;
+        }
+
+        if( t.y > max ) {
+	    y = max;
+        } else if( t.y < min ) {
+	    y = min;
+        } else {
+	    y = t.y;
+        }
+    }
+
+
+    /**
+     *  Clamps the minimum value of the tuple parameter to the min
+     *  parameter and places the values into this tuple.
+     *  @param min   the lowest value in the tuple after clamping
+     *  @param t   the source tuple, which will not be modified
+     */
+    public final void clampMin(int min, Tuple2i t) {
+        if( t.x < min ) {
+	    x = min;
+        } else {
+	    x = t.x;
+        }
+
+        if( t.y < min ) {
+	    y = min;
+        } else {
+	    y = t.y;
+        }
+    }
+
+
+    /**
+     *  Clamps the maximum value of the tuple parameter to the max
+     *  parameter and places the values into this tuple.
+     *  @param max   the highest value in the tuple after clamping
+     *  @param t   the source tuple, which will not be modified
+     */
+    public final void clampMax(int max, Tuple2i t) {
+        if( t.x > max ) {
+	    x = max;
+        } else {
+	    x = t.x;
+        }
+
+        if( t.y > max ) {
+	    y = max;
+        } else {
+	    y = t.y;
+        }
+    }
+
+
+    /**
+     *  Sets each component of the tuple parameter to its absolute
+     *  value and places the modified values into this tuple.
+     *  @param t   the source tuple, which will not be modified
+     */
+    public final void absolute(Tuple2i t) {
+	x = Math.abs(t.x);
+	y = Math.abs(t.y);
+    }
+
+
+    /**
+     *  Clamps this tuple to the range [low, high].
+     *  @param min  the lowest value in this tuple after clamping
+     *  @param max  the highest value in this tuple after clamping
+     */
+    public final void clamp(int min, int max) {
+	if( x > max ) {
+	    x = max;
+        } else if( x < min ) {
+	    x = min;
+        }
+
+        if( y > max ) {
+	    y = max;
+        } else if( y < min ) {
+	    y = min;
+        }
+    }
+
+
+    /**
+     *  Clamps the minimum value of this tuple to the min parameter.
+     *  @param min   the lowest value in this tuple after clamping
+     */
+    public final void clampMin(int min) {
+	if (x < min)
+	    x=min;
+
+	if (y < min)
+	    y = min;
+    }
+
+
+    /**
+     *  Clamps the maximum value of this tuple to the max parameter.
+     *  @param max   the highest value in the tuple after clamping
+     */
+    public final void clampMax(int max) {
+	if (x > max)
+	    x = max;
+
+	if (y > max)
+	    y = max;
+    }
+
+
+    /**
+     *  Sets each component of this tuple to its absolute value.
+     */
+    public final void absolute() {
+	x = Math.abs(x);
+	y = Math.abs(y);
+    }
+
+    /**
+     * Creates a new object of the same class as this object.
+     *
+     * @return a clone of this instance.
+     * @exception OutOfMemoryError if there is not enough memory.
+     * @see java.lang.Cloneable
+     */
+    public Object clone() {
+	// Since there are no arrays we can just use Object.clone()
+	try {
+	    return super.clone();
+	} catch (CloneNotSupportedException e) {
+	    // this shouldn't happen, since we are Cloneable
+	    throw new InternalError();
+	}
+    }
+
+}