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Diffstat (limited to 'src/main/java/org/jogamp/vecmath/Tuple2f.java')
| -rw-r--r-- | src/main/java/org/jogamp/vecmath/Tuple2f.java | 607 |
1 files changed, 607 insertions, 0 deletions
diff --git a/src/main/java/org/jogamp/vecmath/Tuple2f.java b/src/main/java/org/jogamp/vecmath/Tuple2f.java new file mode 100644 index 0000000..f929f1b --- /dev/null +++ b/src/main/java/org/jogamp/vecmath/Tuple2f.java @@ -0,0 +1,607 @@ +/* + * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +package org.jogamp.vecmath; + + +/** + * A generic 2-element tuple that is represented by single-precision + * floating point x,y coordinates. + * + */ +public abstract class Tuple2f implements java.io.Serializable, Cloneable { + + static final long serialVersionUID = 9011180388985266884L; + + /** + * The x coordinate. + */ + public float x; + + /** + * The y coordinate. + */ + public float y; + + + /** + * Constructs and initializes a Tuple2f from the specified xy coordinates. + * @param x the x coordinate + * @param y the y coordinate + */ + public Tuple2f(float x, float y) + { + this.x = x; + this.y = y; + } + + + /** + * Constructs and initializes a Tuple2f from the specified array. + * @param t the array of length 2 containing xy in order + */ + public Tuple2f(float[] t) + { + this.x = t[0]; + this.y = t[1]; + } + + + /** + * Constructs and initializes a Tuple2f from the specified Tuple2f. + * @param t1 the Tuple2f containing the initialization x y data + */ + public Tuple2f(Tuple2f t1) + { + this.x = t1.x; + this.y = t1.y; + } + + + /** + * Constructs and initializes a Tuple2f from the specified Tuple2d. + * @param t1 the Tuple2d containing the initialization x y data + */ + public Tuple2f(Tuple2d t1) + { + this.x = (float) t1.x; + this.y = (float) t1.y; + } + + + /** + * Constructs and initializes a Tuple2f to (0,0). + */ + public Tuple2f() + { + this.x = (float) 0.0; + this.y = (float) 0.0; + } + + + /** + * Sets the value of this tuple to the specified xy coordinates. + * @param x the x coordinate + * @param y the y coordinate + */ + public final void set(float x, float y) + { + this.x = x; + this.y = y; + } + + + /** + * Sets the value of this tuple from the 2 values specified in + * the array. + * @param t the array of length 2 containing xy in order + */ + public final void set(float[] t) + { + this.x = t[0]; + this.y = t[1]; + } + + + /** + * Sets the value of this tuple to the value of the Tuple2f argument. + * @param t1 the tuple to be copied + */ + public final void set(Tuple2f t1) + { + this.x = t1.x; + this.y = t1.y; + } + + + /** + * Sets the value of this tuple to the value of the Tuple2d argument. + * @param t1 the tuple to be copied + */ + public final void set(Tuple2d t1) + { + this.x = (float) t1.x; + this.y = (float) t1.y; + } + + + /** + * Copies the value of the elements of this tuple into the array t. + * @param t the array that will contain the values of the vector + */ + public final void get(float[] t) + { + t[0] = this.x; + t[1] = this.y; + } + + + /** + * Sets the value of this tuple to the vector sum of tuples t1 and t2. + * @param t1 the first tuple + * @param t2 the second tuple + */ + public final void add(Tuple2f t1, Tuple2f t2) + { + this.x = t1.x + t2.x; + this.y = t1.y + t2.y; + } + + + /** + * Sets the value of this tuple to the vector sum of itself and tuple t1. + * @param t1 the other tuple + */ + public final void add(Tuple2f t1) + { + this.x += t1.x; + this.y += t1.y; + } + + + /** + * Sets the value of this tuple to the vector difference of + * tuple t1 and t2 (this = t1 - t2). + * @param t1 the first tuple + * @param t2 the second tuple + */ + public final void sub(Tuple2f t1, Tuple2f t2) + { + this.x = t1.x - t2.x; + this.y = t1.y - t2.y; + } + + + /** + * Sets the value of this tuple to the vector difference of + * itself and tuple t1 (this = this - t1). + * @param t1 the other tuple + */ + public final void sub(Tuple2f 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(Tuple2f t1) + { + this.x = -t1.x; + this.y = -t1.y; + } + + + /** + * Negates the value of this vector 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(float s, Tuple2f t1) + { + this.x = s*t1.x; + this.y = s*t1.y; + } + + + /** + * Sets the value of this tuple to the scalar multiplication + * of itself. + * @param s the scalar value + */ + public final void scale(float s) + { + this.x *= s; + this.y *= s; + } + + + /** + * Sets the value of this tuple to the scalar multiplication + * of tuple t1 and then adds 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(float s, Tuple2f t1, Tuple2f 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(float s, Tuple2f t1) + { + this.x = s*this.x + t1.x; + this.y = s*this.y + t1.y; + } + + + + /** + * Returns a hash code value based on the data values in this + * object. Two different Tuple2f objects with identical data values + * (i.e., Tuple2f.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 + */ + @Override + public int hashCode() { + long bits = 1L; + bits = VecMathUtil.hashFloatBits(bits, x); + bits = VecMathUtil.hashFloatBits(bits, y); + return VecMathUtil.hashFinish(bits); + } + + + /** + * Returns true if all of the data members of Tuple2f t1 are + * equal to the corresponding data members in this Tuple2f. + * @param t1 the vector with which the comparison is made + * @return true or false + */ + public boolean equals(Tuple2f t1) + { + try { + return(this.x == t1.x && this.y == t1.y); + } + catch (NullPointerException e2) {return false;} + + } + + /** + * Returns true if the Object t1 is of type Tuple2f and all of the + * data members of t1 are equal to the corresponding data members in + * this Tuple2f. + * @param t1 the object with which the comparison is made + * @return true or false + */ + @Override + public boolean equals(Object t1) + { + try { + Tuple2f t2 = (Tuple2f) t1; + return(this.x == t2.x && this.y == t2.y); + } + catch (NullPointerException e2) {return false;} + catch (ClassCastException e1) {return false;} + + } + + /** + * Returns true if the L-infinite distance between this tuple + * and tuple t1 is less than or equal to the epsilon parameter, + * otherwise returns false. The L-infinite + * distance is equal to MAX[abs(x1-x2), abs(y1-y2)]. + * @param t1 the tuple to be compared to this tuple + * @param epsilon the threshold value + * @return true or false + */ + public boolean epsilonEquals(Tuple2f t1, float epsilon) + { + float diff; + + diff = x - t1.x; + if(Float.isNaN(diff)) return false; + if((diff<0?-diff:diff) > epsilon) return false; + + diff = y - t1.y; + if(Float.isNaN(diff)) return false; + if((diff<0?-diff:diff) > epsilon) return false; + + return true; + } + + /** + * Returns a string that contains the values of this Tuple2f. + * The form is (x,y). + * @return the String representation + */ + @Override + public String toString() + { + return("(" + this.x + ", " + this.y + ")"); + } + + + /** + * 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(float min, float max, Tuple2f 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(float min, Tuple2f 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(float max, Tuple2f 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(Tuple2f 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(float min, float 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(float 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(float 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); + } + + + /** + * Linearly interpolates between tuples t1 and t2 and places the + * result into this tuple: this = (1-alpha)*t1 + alpha*t2. + * @param t1 the first tuple + * @param t2 the second tuple + * @param alpha the alpha interpolation parameter + */ + public final void interpolate(Tuple2f t1, Tuple2f t2, float alpha) + { + this.x = (1-alpha)*t1.x + alpha*t2.x; + this.y = (1-alpha)*t1.y + alpha*t2.y; + + } + + + /** + * Linearly interpolates between this tuple and tuple t1 and + * places the result into this tuple: this = (1-alpha)*this + alpha*t1. + * @param t1 the first tuple + * @param alpha the alpha interpolation parameter + */ + public final void interpolate(Tuple2f t1, float alpha) + { + + this.x = (1-alpha)*this.x + alpha*t1.x; + this.y = (1-alpha)*this.y + alpha*t1.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 + * @since vecmath 1.3 + */ + @Override + 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(); + } + } + + + /** + * Get the <i>x</i> coordinate. + * + * @return the <i>x</i> coordinate. + * + * @since vecmath 1.5 + */ + public final float getX() { + return x; + } + + + /** + * Set the <i>x</i> coordinate. + * + * @param x value to <i>x</i> coordinate. + * + * @since vecmath 1.5 + */ + public final void setX(float x) { + this.x = x; + } + + + /** + * Get the <i>y</i> coordinate. + * + * @return the <i>y</i> coordinate. + * + * @since vecmath 1.5 + */ + public final float getY() { + return y; + } + + + /** + * Set the <i>y</i> coordinate. + * + * @param y value to <i>y</i> coordinate. + * + * @since vecmath 1.5 + */ + public final void setY(float y) { + this.y = y; + } +} |