Java Matrix Multiply matrix4x4f_Mult(float[] result, float[] a, float[] b)

Description

matrixx Mult

License

Open Source License

Declaration

public static void matrix4x4f_Mult(float[] result, float[] a, float[] b) 

Method Source Code

//package com.java2s;
/**/*from   w w w  .  j  a  va2  s  .c  om*/
Copyright (C) 2010  Holger Dammertz
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
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 for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    public static void matrix4x4f_Mult(float[] result, float[] a, float[] b) {
        result[0] = a[0] * b[0] + a[1] * b[4] + a[2] * b[8] + a[3] * b[12];
        result[1] = a[0] * b[1] + a[1] * b[5] + a[2] * b[9] + a[3] * b[13];
        result[2] = a[0] * b[2] + a[1] * b[6] + a[2] * b[10] + a[3] * b[14];
        result[3] = a[0] * b[3] + a[1] * b[7] + a[2] * b[11] + a[3] * b[15];

        result[4] = a[4] * b[0] + a[5] * b[4] + a[6] * b[8] + a[7] * b[12];
        result[5] = a[4] * b[1] + a[5] * b[5] + a[6] * b[9] + a[7] * b[13];
        result[6] = a[4] * b[2] + a[5] * b[6] + a[6] * b[10] + a[7] * b[14];
        result[7] = a[4] * b[3] + a[5] * b[7] + a[6] * b[11] + a[7] * b[15];

        result[8] = a[8] * b[0] + a[9] * b[4] + a[10] * b[8] + a[11] * b[12];
        result[9] = a[8] * b[1] + a[9] * b[5] + a[10] * b[9] + a[11] * b[13];
        result[10] = a[8] * b[2] + a[9] * b[6] + a[10] * b[10] + a[11] * b[14];
        result[11] = a[8] * b[3] + a[9] * b[7] + a[10] * b[11] + a[11] * b[15];

        result[12] = a[12] * b[0] + a[13] * b[4] + a[14] * b[8] + a[15] * b[12];
        result[13] = a[12] * b[1] + a[13] * b[5] + a[14] * b[9] + a[15] * b[13];
        result[14] = a[12] * b[2] + a[13] * b[6] + a[14] * b[10] + a[15] * b[14];
        result[15] = a[12] * b[3] + a[13] * b[7] + a[14] * b[11] + a[15] * b[15];
    }
}

Related

1. matrix_matrix_mult(double ad[][], double ad1[][], double ad2[][])
2. matrixMult(final float[] result, float[] m1, float[] m2)
3. matrixMultiplication(double[][] w, double[][] v)
4. matrixMultiply(double[][] A, double[][] B, int aHeight, int bWidth, int comm, int bz, double[][] C)