public Vector4f set(float x, float y, float z, float w) {
        this.x = x;
        this.y = y;
        this.z = z;
        this.w = w;
        return this;
    }
<code>set</code> sets the x,y,z,w values of the vector based on passed
parameters.

@param x   the x value of the vector.
@param y   the y value of the vector.
@param z   the z value of the vector.
@param w   the w value of the vector.
@return this vector
jme3-core/src/main/java/com/jme3/math/Vector4f.java