+++ /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;
-import javajs.util.T3;
-
-
-
-/**
- * A 4 element axis angle represented by single precision floating point
- * x,y,z,angle components. An axis angle is a rotation of angle (radians) about
- * the vector (x,y,z).
- *
- * @version specification 1.1, implementation $Revision: 1.9 $, $Date:
- * 2006/07/28 17:01:32 $
- * @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 class A4 implements JSONEncodable, Serializable {
-
- /*
- * I assumed that the length of the axis vector is not significant.
- */
-
- /**
- * The x coordinate.
- */
- public float x;
-
- /**
- * The y coordinate.
- */
- public float y;
-
- /**
- * The z coordinate.
- */
- public float z;
-
- /**
- * The angle.
- */
- public float angle;
-
- /**
- * Constructs and initializes a AxisAngle4f to (0,0,1,0).
- */
- public A4() {
- z = 1.0f;
- }
-
- /**
- * Constructs and initializes an AxisAngle4f from the specified x, y, z, and
- * angle.
- *
- * @param x
- * the x coordinate
- * @param y
- * the y coordinate
- * @param z
- * the z coordinate
- * @param angle
- * the angle.
- * @return a
- */
- public static A4 new4(float x, float y, float z, float angle) {
- A4 a = new A4();
- a.set4(x, y, z, angle);
- return a;
- }
-
- /**
- * Constructs and initializes a AxisAngle4f from the specified AxisAngle4f.
- *
- * @param a1
- * the AxisAngle4f containing the initialization x y z angle data
- * @return a
- */
- public static A4 newAA(A4 a1) {
- A4 a = new A4();
- a.set4(a1.x, a1.y, a1.z, a1.angle);
- return a;
- }
-
- /**
- * Constructs and initializes an AxisAngle4f from the specified axis and
- * angle.
- *
- * @param axis
- * the axis
- * @param angle
- * the angle
- * @return a
- */
- public static A4 newVA(V3 axis, float angle) {
- A4 a = new A4();
- a.setVA(axis, angle);
- return a;
- }
-
- /**
- * Sets the value of this AxisAngle4f to the specified axis and angle.
- *
- * @param axis
- * the axis
- * @param angle
- * the angle
- * @since Java 3D 1.2
- */
- public final void setVA(V3 axis, float angle) {
- x = axis.x;
- y = axis.y;
- z = axis.z;
- this.angle = angle;
- }
-
- /**
- * Sets the value of this axis angle to the specified x,y,z,angle.
- *
- * @param x
- * the x coordinate
- * @param y
- * the y coordinate
- * @param z
- * the z coordinate
- * @param angle
- * the angle
- */
- public final void set4(float x, float y, float z, float angle) {
- this.x = x;
- this.y = y;
- this.z = z;
- this.angle = angle;
- }
-
- /**
- * Sets the value of this axis angle to the value of axis angle t1.
- *
- * @param a
- * the axis angle to be copied
- */
- public final void setAA(A4 a) {
- x = a.x;
- y = a.y;
- z = a.z;
- angle = a.angle;
- }
-
-
- /**
- * Sets the value of this axis-angle to the rotational component of the passed
- * matrix.
- *
- * @param m1
- * the matrix3f
- */
- public final void setM(M3 m1) {
- setFromMat(m1.m00, m1.m01, m1.m02, m1.m10, m1.m11, m1.m12, m1.m20, m1.m21,
- m1.m22);
- }
-
- // helper method
- private void setFromMat(double m00, double m01, double m02, double m10,
- double m11, double m12, double m20, double m21,
- double m22) {
- // assuming M is normalized.
-
- double cos = (m00 + m11 + m22 - 1.0) * 0.5;
- x = (float) (m21 - m12);
- y = (float) (m02 - m20);
- z = (float) (m10 - m01);
- double sin = 0.5 * Math.sqrt(x * x + y * y + z * z);
- if (sin == 0 && cos == 1) {
- x = y = 0;
- z = 1;
- angle = 0;
- } else {
- angle = (float) Math.atan2(sin, cos);
- }
-
- // no need to normalize
- // x /= n;
- // y /= n;
- // z /= n;
- }
-
- /**
- * Returns a hash number based on the data values in this object. Two
- * different AxisAngle4f objects with identical data values (ie, returns true
- * for equals(AxisAngle4f) ) 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() {
- return T3.floatToIntBits(x) ^ T3.floatToIntBits(y)
- ^ T3.floatToIntBits(z) ^ T3.floatToIntBits(angle);
- }
-
- /**
- * Returns true if the Object o is of type AxisAngle4f and all of the data
- * members of o1 are equal to the corresponding data members in this
- * AxisAngle4f.
- *
- * @param o
- * the object with which the comparison is made.
- * @return T/F
- */
- @Override
- public boolean equals(Object o) {
- if (!(o instanceof A4))
- return false;
- A4 a1 = (A4) o;
- return x == a1.x && y == a1.y && z == a1.z && angle == a1.angle;
- }
-
- /**
- * Returns a string that contains the values of this AxisAngle4f. The form is
- * (x,y,z,angle).
- *
- * @return the String representation
- */
- @Override
- public String toString() {
- return "(" + x + ", " + y + ", " + z + ", " + angle + ")";
- }
-
- @Override
- public String toJSON() {
- return "[" + x + "," + y + "," + z + "," + (float) (angle * 180.0 / Math.PI) + "]";
- }
-}
git://source.jalview.org / jalview.git / blobdiff