// extract each component of a vector: // for 3D vectors: // #if (MyVector.x > 5) ... // #if (MyVector.y > 5) ... // #if (MyVector.z > 5) ... // in addition for 4D vectors: // #if (MyVector.t > 5) ... // for 2D (UV) vectors: // #if (MyVector.u > 5) ... // #if (MyVector.v > 5) ...