Java Vector Multiply vectorMatrixMultiply(double[][] matrix, double[] vector)

Description

vector Matrix Multiply

License

Apache License

Declaration

private static double[] vectorMatrixMultiply(double[][] matrix, double[] vector) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2009 OpenSHA.org in partnership with
 * the Southern California Earthquake Center (SCEC, http://www.scec.org)
 * at the University of Southern California and the UnitedStates Geological
 * Survey (USGS; http://www.usgs.gov)//from   w  w w. j av  a 2  s .c o m
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

public class Main {
    private static double[] vectorMatrixMultiply(double[][] matrix, double[] vector) {
        double[] rotatedVector = new double[3];
        for (int i = 0; i < 3; i++) {
            rotatedVector[i] = vector[0] * matrix[i][0] + vector[1] * matrix[i][1] + vector[2] * matrix[i][2];
        }
        return rotatedVector;
    }
}

Related

1. vectorMult(final float[] result, final float[] m, final float[] v)
2. vectorMult3D(float[] array, int vectorIndex, float scale)
3. vectorMultiply(double s, double[] v)