--- /dev/null
+/*
+ Copyright (C) 1997,1998,1999
+ Kenji Hiranabe, Eiwa System Management, Inc.
+
+ This program is free software.
+ Implemented by Kenji Hiranabe(hiranabe@esm.co.jp),
+ conforming to the Java(TM) 3D API specification by Sun Microsystems.
+
+ Permission to use, copy, modify, distribute and sell this software
+ and its documentation for any purpose is hereby granted without fee,
+ provided that the above copyright notice appear in all copies and
+ that both that copyright notice and this permission notice appear
+ in supporting documentation. Kenji Hiranabe and Eiwa System Management,Inc.
+ makes no representations about the suitability of this software for any
+ purpose. It is provided "AS IS" with NO WARRANTY.
+*/
+package javajs.util;
+
+import java.io.Serializable;
+
+import javajs.api.JSONEncodable;
+
+/**
+ * A generic 3 element tuple that is represented by single precision floating
+ * point x,y and z coordinates.
+ *
+ * @version specification 1.1, implementation $Revision: 1.10 $, $Date:
+ * 2006/09/08 20:20:20 $
+ * @author Kenji hiranabe
+ *
+ * additions by Bob Hanson hansonr@stolaf.edu 9/30/2012
+ * for unique constructor and method names
+ * for the optimization of compiled JavaScript using Java2Script
+ */
+public abstract class T3 implements JSONEncodable, Serializable {
+
+ public float x, y, z;
+
+ /**
+ * @j2sIgnore
+ *
+ */
+ public T3() {
+ }
+
+ /**
+ * Sets the value of this tuple to the specified xyz coordinates.
+ *
+ * @param x
+ * the x coordinate
+ * @param y
+ * the y coordinate
+ * @param z
+ * the z coordinate
+ */
+ public final void set(float x, float y, float z) {
+ this.x = x;
+ this.y = y;
+ this.z = z;
+ }
+
+ /**
+ * Sets the value of this tuple from the 3 values specified in the array.
+ *
+ * @param t
+ * the array of length 3 containing xyz in order
+ */
+ public final void setA(float t[]) {
+ // ArrayIndexOutOfBounds is thrown if t.length < 3
+ x = t[0];
+ y = t[1];
+ z = t[2];
+ }
+
+ /**
+ * Sets the value of this tuple to the value of the Tuple3f argument.
+ *
+ * @param t1
+ * the tuple to be copied
+ */
+ public final void setT(T3 t1) {
+ x = t1.x;
+ y = t1.y;
+ z = t1.z;
+ }
+
+ /**
+ * 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 add2(T3 t1, T3 t2) {
+ x = t1.x + t2.x;
+ y = t1.y + t2.y;
+ z = t1.z + t2.z;
+ }
+
+ /**
+ * Sets the value of this tuple to the vector sum of itself and tuple t1.
+ *
+ * @param t1
+ * the other tuple
+ */
+ public final void add(T3 t1) {
+ x += t1.x;
+ y += t1.y;
+ z += t1.z;
+ }
+
+ /**
+ * Computes the square of the distance between this point and point p1.
+ *
+ * @param p1
+ * the other point
+ * @return the square of distance between these two points as a float
+ */
+ public final float distanceSquared(T3 p1) {
+ double dx = x - p1.x;
+ double dy = y - p1.y;
+ double dz = z - p1.z;
+ return (float) (dx * dx + dy * dy + dz * dz);
+ }
+
+ /**
+ * Returns the distance between this point and point p1.
+ *
+ * @param p1
+ * the other point
+ * @return the distance between these two points
+ */
+ public final float distance(T3 p1) {
+ return (float) Math.sqrt(distanceSquared(p1));
+ }
+
+ /**
+ * 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 sub2(T3 t1, T3 t2) {
+ x = t1.x - t2.x;
+ y = t1.y - t2.y;
+ z = t1.z - t2.z;
+ }
+
+ /**
+ * 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(T3 t1) {
+ x -= t1.x;
+ y -= t1.y;
+ z -= t1.z;
+ }
+
+ /**
+ * Sets the value of this tuple to the scalar multiplication of itself.
+ *
+ * @param s
+ * the scalar value
+ */
+ public final void scale(float s) {
+ x *= s;
+ y *= s;
+ z *= s;
+ }
+
+ /**
+ * Add {a b c}
+ *
+ * @param a
+ * @param b
+ * @param c
+ */
+ public final void add3(float a, float b, float c) {
+ x += a;
+ y += b;
+ z += c;
+ }
+
+
+ /**
+ * {x*p.x, y*p.y, z*p.z) used for three-way scaling
+ *
+ * @param p
+ */
+ public final void scaleT(T3 p) {
+ x *= p.x;
+ y *= p.y;
+ z *= p.z;
+ }
+
+
+ /**
+ * 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 scaleAdd2(float s, T3 t1, T3 t2) {
+ x = s * t1.x + t2.x;
+ y = s * t1.y + t2.y;
+ z = s * t1.z + t2.z;
+ }
+
+
+ /**
+ * average of two tuples
+ *
+ * @param a
+ * @param b
+ */
+ public void ave(T3 a, T3 b) {
+ x = (a.x + b.x) / 2f;
+ y = (a.y + b.y) / 2f;
+ z = (a.z + b.z) / 2f;
+ }
+
+ /**
+ * Vector dot product. Was in Vector3f; more useful here, though.
+ *
+ * @param v
+ * the other vector
+ * @return this.dot.v
+ */
+ public final float dot(T3 v) {
+ return x * v.x + y * v.y + z * v.z;
+ }
+
+ /**
+ * Returns the squared length of this vector.
+ * Was in Vector3f; more useful here, though.
+ *
+ * @return the squared length of this vector
+ */
+ public final float lengthSquared() {
+ return x * x + y * y + z * z;
+ }
+
+ /**
+ * Returns the length of this vector.
+ * Was in Vector3f; more useful here, though.
+ *
+ * @return the length of this vector
+ */
+ public final float length() {
+ return (float) Math.sqrt(lengthSquared());
+ }
+
+ /**
+ * Normalizes this vector in place.
+ * Was in Vector3f; more useful here, though.
+ */
+ public final void normalize() {
+ double d = length();
+
+ // zero-div may occur.
+ x /= d;
+ y /= d;
+ z /= d;
+ }
+
+ /**
+ * Sets this tuple to be the vector cross product of vectors v1 and v2.
+ *
+ * @param v1
+ * the first vector
+ * @param v2
+ * the second vector
+ */
+ public final void cross(T3 v1, T3 v2) {
+ set(v1.y * v2.z - v1.z * v2.y, v1.z * v2.x - v1.x * v2.z, v1.x * v2.y
+ - v1.y * v2.x);
+ }
+
+ /**
+ * Returns a hash number based on the data values in this object. Two
+ * different Tuple3f objects with identical data values (ie, returns true for
+ * equals(Tuple3f) ) will return the same hash number. Two vectors with
+ * different data members may return the same hash value, although this is not
+ * likely.
+ */
+ @Override
+ public int hashCode() {
+ long bits = 1L;
+ bits = 31L * bits + floatToIntBits0(x);
+ bits = 31L * bits + floatToIntBits0(y);
+ bits = 31L * bits + floatToIntBits0(z);
+ return (int) (bits ^ (bits >> 32));
+ }
+
+ public static int floatToIntBits0(float f) {
+ return (f == 0 ? 0 : Float.floatToIntBits(f));
+ }
+
+ /**
+ * Returns true if all of the data members of Tuple3f t1 are equal to the
+ * corresponding data members in this
+ *
+ * @param t1
+ * the vector with which the comparison is made.
+ */
+ @Override
+ public boolean equals(Object t1) {
+ if (!(t1 instanceof T3))
+ return false;
+ T3 t2 = (T3) t1;
+ return (x == t2.x && y == t2.y && z == t2.z);
+ }
+
+ /**
+ * Returns a string that contains the values of this Tuple3f. The form is
+ * (x,y,z).
+ *
+ * @return the String representation
+ */
+ @Override
+ public String toString() {
+ return "{" + x + ", " + y + ", " + z + "}";
+ }
+
+ @Override
+ public String toJSON() {
+ return "[" + x + "," + y + "," + z + "]";
+ }
+}
git://source.jalview.org / jalview.git / blobdiff