Multiplication of column-major 4x4 matrix with vector - Java java.lang

Java examples for java.lang:Math Vector

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Description

Multiplication of column-major 4x4 matrix with vector

Demo Code

/**//from  w w w.ja v  a 2 s . co  m
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//package com.java2s;

public class Main {
    /**
     * Multiplication of column-major 4x4 matrix with vector
     * @param colMatrix column matrix (4x4)
     * @param vec vector(x,y,z)
     * @return result
     */
    public static float[] mulColMat4Vec3(final float[] result,
            final float[] colMatrix, final float[] vec) {
        result[0] = vec[0] * colMatrix[0] + vec[1] * colMatrix[4] + vec[2]
                * colMatrix[8] + colMatrix[12];
        result[1] = vec[0] * colMatrix[1] + vec[1] * colMatrix[5] + vec[2]
                * colMatrix[9] + colMatrix[13];
        result[2] = vec[0] * colMatrix[2] + vec[1] * colMatrix[6] + vec[2]
                * colMatrix[10] + colMatrix[14];

        return result;
    }
}

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