/*
 * 
 * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved. 
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER 
 *  
 * This program 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. 
 *  
 * This program 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 at /legal/license.txt). 
 *  
 * 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 or visit www.sun.com if you need additional 
 * information or have any questions.
 */


package com.sun.pisces;

public class Transform4 {

    public int m00, m01, m10, m11;
//     double det; // det*65536

    public Transform4() {
        this(1 << 16, 0, 0, 1 << 16);
    }

    public Transform4(int m00, int m01,
                      int m10, int m11) {
        this.m00 = m00;
        this.m01 = m01;
        this.m10 = m10;
        this.m11 = m11;

//         this.det = (double)m00*m11 - (double)m01*m10;
    }

//     public Transform4 createInverse() {
//         double dm00 = m00/65536.0;
//         double dm01 = m01/65536.0;
//         double dm10 = m10/65536.0;
//         double dm11 = m11/65536.0;

//         double invdet = 65536.0/(dm00*dm11 - dm01*dm10);
        
//         int im00 = (int)( dm11*invdet);
//         int im01 = (int)(-dm01*invdet);
//         int im10 = (int)(-dm10*invdet);
//         int im11 = (int)( dm00*invdet);

//         return new Transform4(im00, im01, im10, im11);
//     }

//     public void transform(int[] point) {
//     }

//     /**
//      * Returns the length of the line segment obtained by inverse
//      * transforming the points <code>(x0, y0)</code> and <code>(x1,
//      * y1)</code>.
//      */
//     public int getTransformedLength(int x0, int x1, int y0, int y1) {
//         int lx = x1 - x0;
//         int ly = y1 - y0;

//         double a = (double)m00*ly - (double)m10*lx;
//         double b = (double)m01*ly - (double)m11*lx;
//         double len = PiscesMath.sqrt((a*a + b*b)/(det*det));
//         return (int)(len*65536.0);
//     }

//     public int getType() {
//     }

}