diff options
Diffstat (limited to 'src/javax/vecmath/Tuple4f.java')
| -rw-r--r-- | src/javax/vecmath/Tuple4f.java | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/src/javax/vecmath/Tuple4f.java b/src/javax/vecmath/Tuple4f.java new file mode 100644 index 0000000..fea4e31 --- /dev/null +++ b/src/javax/vecmath/Tuple4f.java @@ -0,0 +1,682 @@ +/* + * $RCSfile$ + * + * 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 4-element tuple represented by single-precision floating point x,y,z,w + * coordinates. + * + */ +public abstract class Tuple4f implements java.io.Serializable, Cloneable { + + static final long serialVersionUID = 7068460319248845763L; + + /** + * The x coordinate. + */ + public float x; + + /** + * The y coordinate. + */ + public float y; + + /** + * The z coordinate. + */ + public float z; + + /** + * The w coordinate. + */ + public float w; + + + /** + * Constructs and initializes a Tuple4f from the specified xyzw coordinates. + * @param x the x coordinate + * @param y the y coordinate + * @param z the z coordinate + * @param w the w coordinate + */ + public Tuple4f(float x, float y, float z, float w) + { + this.x = x; + this.y = y; + this.z = z; + this.w = w; + } + + + /** + * Constructs and initializes a Tuple4f from the array of length 4. + * @param t the array of length 4 containing xyzw in order + */ + public Tuple4f(float[] t) + { + this.x = t[0]; + this.y = t[1]; + this.z = t[2]; + this.w = t[3]; + } + + + /** + * Constructs and initializes a Tuple4f from the specified Tuple4f. + * @param t1 the Tuple4f containing the initialization x y z w data + */ + public Tuple4f(Tuple4f t1) + { + this.x = t1.x; + this.y = t1.y; + this.z = t1.z; + this.w = t1.w; + } + + + /** + * Constructs and initializes a Tuple4f from the specified Tuple4d. + * @param t1 the Tuple4d containing the initialization x y z w data + */ + public Tuple4f(Tuple4d t1) + { + this.x = (float) t1.x; + this.y = (float) t1.y; + this.z = (float) t1.z; + this.w = (float) t1.w; + } + + + /** + * Constructs and initializes a Tuple4f to (0,0,0,0). + */ + public Tuple4f() + { + this.x = 0.0f; + this.y = 0.0f; + this.z = 0.0f; + this.w = 0.0f; + } + + + /** + * Sets the value of this tuple to the specified xyzw coordinates. + * @param x the x coordinate + * @param y the y coordinate + * @param z the z coordinate + * @param w the w coordinate + */ + public final void set(float x, float y, float z, float w) + { + this.x = x; + this.y = y; + this.z = z; + this.w = w; + } + + + /** + * Sets the value of this tuple to the specified coordinates in the + * array of length 4. + * @param t the array of length 4 containing xyzw in order + */ + public final void set(float[] t) + { + this.x = t[0]; + this.y = t[1]; + this.z = t[2]; + this.w = t[3]; + } + + + /** + * Sets the value of this tuple to the value of tuple t1. + * @param t1 the tuple to be copied + */ + public final void set(Tuple4f t1) + { + this.x = t1.x; + this.y = t1.y; + this.z = t1.z; + this.w = t1.w; + } + + + /** + * Sets the value of this tuple to the value of tuple t1. + * @param t1 the tuple to be copied + */ + public final void set(Tuple4d t1) + { + this.x = (float) t1.x; + this.y = (float) t1.y; + this.z = (float) t1.z; + this.w = (float) t1.w; + } + + + /** + * Copies the values of this tuple into the array t. + * @param t the array + */ + public final void get(float[] t) + { + t[0] = this.x; + t[1] = this.y; + t[2] = this.z; + t[3] = this.w; + } + + + /** + * Copies the values of this tuple into the tuple t. + * @param t the target tuple + */ + public final void get(Tuple4f t) + { + t.x = this.x; + t.y = this.y; + t.z = this.z; + t.w = this.w; + } + + + /** + * 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(Tuple4f t1, Tuple4f t2) + { + this.x = t1.x + t2.x; + this.y = t1.y + t2.y; + this.z = t1.z + t2.z; + this.w = t1.w + t2.w; + } + + + /** + * Sets the value of this tuple to the sum of itself and t1. + * @param t1 the other tuple + */ + public final void add(Tuple4f t1) + { + this.x += t1.x; + this.y += t1.y; + this.z += t1.z; + this.w += t1.w; + } + + + /** + * 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(Tuple4f t1, Tuple4f t2) + { + this.x = t1.x - t2.x; + this.y = t1.y - t2.y; + this.z = t1.z - t2.z; + this.w = t1.w - t2.w; + } + + + /** + * 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(Tuple4f t1) + { + this.x -= t1.x; + this.y -= t1.y; + this.z -= t1.z; + this.w -= t1.w; + } + + + /** + * Sets the value of this tuple to the negation of tuple t1. + * @param t1 the source tuple + */ + public final void negate(Tuple4f t1) + { + this.x = -t1.x; + this.y = -t1.y; + this.z = -t1.z; + this.w = -t1.w; + } + + + /** + * Negates the value of this tuple in place. + */ + public final void negate() + { + this.x = -this.x; + this.y = -this.y; + this.z = -this.z; + this.w = -this.w; + } + + + /** + * 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, Tuple4f t1) + { + this.x = s*t1.x; + this.y = s*t1.y; + this.z = s*t1.z; + this.w = s*t1.w; + } + + + /** + * 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(float s) + { + this.x *= s; + this.y *= s; + this.z *= s; + this.w *= 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(float s, Tuple4f t1, Tuple4f t2) + { + this.x = s*t1.x + t2.x; + this.y = s*t1.y + t2.y; + this.z = s*t1.z + t2.z; + this.w = s*t1.w + t2.w; + } + + + /** + * 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, Tuple4f t1) + { + this.x = s*this.x + t1.x; + this.y = s*this.y + t1.y; + this.z = s*this.z + t1.z; + this.w = s*this.w + t1.w; + } + + + + /** + * Returns a string that contains the values of this Tuple4f. + * The form is (x,y,z,w). + * @return the String representation + */ + public String toString() { + return "(" + this.x + ", " + this.y + ", " + this.z + ", " + this.w + ")"; + } + + /** + * Returns true if all of the data members of Tuple4f t1 are + * equal to the corresponding data members in this Tuple4f. + * @param t1 the vector with which the comparison is made + * @return true or false + */ + public boolean equals(Tuple4f t1) + { + try { + return(this.x == t1.x && this.y == t1.y && this.z == t1.z + && this.w == t1.w); + } + catch (NullPointerException e2) {return false;} + } + + /** + * Returns true if the Object t1 is of type Tuple4f and all of the + * data members of t1 are equal to the corresponding data members in + * this Tuple4f. + * @param t1 the object with which the comparison is made + * @return true or false + */ + public boolean equals(Object t1) + { + try { + Tuple4f t2 = (Tuple4f) t1; + return(this.x == t2.x && this.y == t2.y && + this.z == t2.z && this.w == t2.w); + } + 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), abs(z1-z2), abs(w1-w2)]. + * @param t1 the tuple to be compared to this tuple + * @param epsilon the threshold value + * @return true or false + */ + public boolean epsilonEquals(Tuple4f t1, float epsilon) + { + float diff; + + diff = x - t1.x; + if((diff<0?-diff:diff) > epsilon) return false; + + diff = y - t1.y; + if((diff<0?-diff:diff) > epsilon) return false; + + diff = z - t1.z; + if((diff<0?-diff:diff) > epsilon) return false; + + diff = w - t1.w; + if((diff<0?-diff:diff) > epsilon) return false; + + return true; + } + + + /** + * Returns a hash code value based on the data values in this + * object. Two different Tuple4f objects with identical data values + * (i.e., Tuple4f.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)Float.floatToIntBits(x); + bits = 31L * bits + (long)Float.floatToIntBits(y); + bits = 31L * bits + (long)Float.floatToIntBits(z); + bits = 31L * bits + (long)Float.floatToIntBits(w); + 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(float min, float max, Tuple4f 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; + } + + if( t.z > max ) { + z = max; + } else if( t.z < min ){ + z = min; + } else { + z = t.z; + } + + if( t.w > max ) { + w = max; + } else if( t.w < min ){ + w = min; + } else { + w = t.w; + } + + } + + + /** + * 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, Tuple4f t) + { + if( t.x < min ) { + x = min; + } else { + x = t.x; + } + + if( t.y < min ) { + y = min; + } else { + y = t.y; + } + + if( t.z < min ) { + z = min; + } else { + z = t.z; + } + + if( t.w < min ) { + w = min; + } else { + w = t.w; + } + + + } + + + /** + * 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, Tuple4f t) + { + if( t.x > max ) { + x = max; + } else { + x = t.x; + } + + if( t.y > max ) { + y = max; + } else { + y = t.y; + } + + if( t.z > max ) { + z = max; + } else { + z = t.z; + } + + if( t.w > max ) { + w = max; + } else { + w = t.z; + } + + } + + + /** + * 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(Tuple4f t) + { + x = Math.abs(t.x); + y = Math.abs(t.y); + z = Math.abs(t.z); + w = Math.abs(t.w); + } + + + /** + * 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; + } + + if( z > max ) { + z = max; + } else if( z < min ){ + z = min; + } + + if( w > max ) { + w = max; + } else if( w < min ){ + w = 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; + if( z < min ) z=min; + if( w < min ) w=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; + if( z > max ) z=max; + if( w > max ) w=max; + + } + + + /** + * Sets each component of this tuple to its absolute value. + */ + public final void absolute() + { + x = Math.abs(x); + y = Math.abs(y); + z = Math.abs(z); + w = Math.abs(w); + } + + + /** + * 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 void interpolate(Tuple4f t1, Tuple4f t2, float alpha) + { + this.x = (1-alpha)*t1.x + alpha*t2.x; + this.y = (1-alpha)*t1.y + alpha*t2.y; + this.z = (1-alpha)*t1.z + alpha*t2.z; + this.w = (1-alpha)*t1.w + alpha*t2.w; + + } + + + /** + * 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 void interpolate(Tuple4f t1, float alpha) + { + this.x = (1-alpha)*this.x + alpha*t1.x; + this.y = (1-alpha)*this.y + alpha*t1.y; + this.z = (1-alpha)*this.z + alpha*t1.z; + this.w = (1-alpha)*this.w + alpha*t1.w; + + } + + /** + * 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(); + } + } + +} |