public Matrix4f set(Matrix4f matrix) {
        m00 = matrix.m00;
        m01 = matrix.m01;
        m02 = matrix.m02;
        m03 = matrix.m03;
        m10 = matrix.m10;
        m11 = matrix.m11;
        m12 = matrix.m12;
        m13 = matrix.m13;
        m20 = matrix.m20;
        m21 = matrix.m21;
        m22 = matrix.m22;
        m23 = matrix.m23;
        m30 = matrix.m30;
        m31 = matrix.m31;
        m32 = matrix.m32;
        m33 = matrix.m33;
        return this;
    }
Copy all elements of the specified matrix to this matrix.

@param matrix the source matrix (not null, unaffected)
@return this (modified)
jme3-core/src/main/java/com/jme3/math/Matrix4f.java