public Vector4f scaleAdd(float scalar, Vector4f mult, Vector4f add) {
        this.x = mult.x * scalar + add.x;
        this.y = mult.y * scalar + add.y;
        this.z = mult.z * scalar + add.z;
        this.w = mult.w * scalar + add.w;
        return this;
    }
<code>scaleAdd</code> multiplies the given vector by a scalar then adds
the given vector.

@param scalar
           the value to multiply this vector by.
@param mult
           the value to multiply the scalar by
@param add
           the value to add
@return this
jme3-core/src/main/java/com/jme3/math/Vector4f.java