public Matrix3f transposeLocal() {
//        float[] tmp = new float[9];
//        get(tmp, false);
//        set(tmp, true);

        float tmp = m01;
        m01 = m10;
        m10 = tmp;

        tmp = m02;
        m02 = m20;
        m20 = tmp;

        tmp = m12;
        m12 = m21;
        m21 = tmp;

        return this;
    }
Transposes the matrix and returns the (modified) current instance.

@return the (modified) current instance
jme3-core/src/main/java/com/jme3/math/Matrix3f.java