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Diffstat (limited to 'src/javax/vecmath/Tuple3b.java')
| -rw-r--r-- | src/javax/vecmath/Tuple3b.java | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/javax/vecmath/Tuple3b.java b/src/javax/vecmath/Tuple3b.java new file mode 100644 index 0000000..2615160 --- /dev/null +++ b/src/javax/vecmath/Tuple3b.java @@ -0,0 +1,229 @@ +/* + * $RCSfile$ + * + * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved. + * + * Use is subject to license terms. + * + * $Revision$ + * $Date$ + * $State$ + */ + +package javax.vecmath; + +import java.lang.Math; + +/** + * A three byte tuple. Note that Java defines a byte as a signed integer + * in the range [-128, 127]. However, colors are more typically + * represented by values in the range [0, 255]. Java 3D recognizes this + * and, in those cases where Tuple3b is used to represent color, treats + * the bytes as if the range were [0, 255]---in other words, as if the + * bytes were unsigned. + * Values greater than 127 can be assigned to a byte variable using a + * type cast. For example: + * <ul>byteVariable = (byte) intValue; // intValue can be > 127</ul> + * If intValue is greater than 127, then byteVariable will be negative. The + * correct value will be extracted when it is used (by masking off the upper + * bits). + */ +public abstract class Tuple3b implements java.io.Serializable, Cloneable { + + static final long serialVersionUID = -483782685323607044L; + + /** + * The first value. + */ + public byte x; + + /** + * The second value. + */ + public byte y; + + /** + * The third value. + */ + public byte z; + + + /** + * Constructs and initializes a Tuple3b from the specified three values. + * @param b1 the first value + * @param b2 the second value + * @param b3 the third value + */ + public Tuple3b(byte b1, byte b2, byte b3) + { + this.x = b1; + this.y = b2; + this.z = b3; + } + + + /** + * Constructs and initializes a Tuple3b from input array of length 3. + * @param t the array of length 3 containing b1 b2 b3 in order + */ + public Tuple3b(byte[] t) + { + this.x = t[0]; + this.y = t[1]; + this.z = t[2]; + } + + + /** + * Constructs and initializes a Tuple3b from the specified Tuple3b. + * @param t1 the Tuple3b containing the initialization x y z data + */ + public Tuple3b(Tuple3b t1) + { + this.x = t1.x; + this.y = t1.y; + this.z = t1.z; + } + + + /** + * Constructs and initializes a Tuple3b to (0,0,0). + */ + public Tuple3b() + { + this.x = (byte) 0; + this.y = (byte) 0; + this.z = (byte) 0; + } + + + /** + * Returns a string that contains the values of this Tuple3b. + * @return a String with the values + */ + public String toString() + { + return("(" + ((int)this.x & 0xff) + + ", " + ((int)this.y & 0xff) + + ", " + ((int)this.z & 0xff) + ")"); + } + + + /** + * Places the value of the x,y,z components of this Tuple3b + * into the array of length 3. + * @param t array of length 3 into which the component values are copied + */ + public final void get(byte[] t) + { + + t[0] = this.x; + t[1] = this.y; + t[2] = this.z; + } + + + /** + * Places the value of the x,y,z components of this tuple into + * the tuple t1. + * @param t1 the tuple into which the values are placed + */ + public final void get(Tuple3b t1) + { + t1.x = this.x; + t1.y = this.y; + t1.z = this.z; + } + + + /** + * Sets the value of the data members of this tuple to the value + * of the argument tuple t1. + * @param t1 the source tuple for the memberwise copy + */ + public final void set(Tuple3b t1) + { + this.x = t1.x; + this.y = t1.y; + this.z = t1.z; + } + + + /** + * Sets the value of the x,y,z, data members of this tuple to the + * values in the array t of length 3. + * @param t array of length 3 which is the source for the memberwise copy + */ + public final void set(byte[] t) + { + this.x = t[0]; + this.y = t[1]; + this.z = t[2]; + } + + + /** + * Returns true if all of the data members of tuple t1 are equal to + * the corresponding data members in this tuple. + * @param t1 the tuple with which the comparison is made + * @return true or false + */ + public boolean equals(Tuple3b t1) + { + try { + return(this.x == t1.x && this.y == t1.y && this.z == t1.z); + } + catch (NullPointerException e2) {return false;} + + } + + /** + * Returns true if the Object t1 is of type Tuple3b and all of the + * data members of t1 are equal to the corresponding data members in + * this Tuple3b. + * @param t1 the object with which the comparison is made + */ + public boolean equals(Object t1) + { + try { + Tuple3b t2 = (Tuple3b) t1; + return(this.x == t2.x && this.y == t2.y && this.z == t2.z); + } + 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 Tuple3b objects with identical data values + * (i.e., Tuple3b.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() { + return ((((int)x & 0xff) << 0) | + (((int)y & 0xff) << 8) | + (((int)z & 0xff) << 16)); + } + + /** + * 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 + * @since Java 3D 1.3 + */ + 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(); + } + } + +} |