Game Development Reference
In-Depth Information
parallelizingvectorhardware)becauseoptimizedinterfacesaretypicallymoreverboseand
would distract us from our goal.
Note: The Direct3D example code provides conversion operators between the vector
classes and the optimized XMVECTOR, it foregoes the optimization in favor of a more
readableandstraightforwardinterface,atthesametimethiscompatibilityallowsoptimized
operations to be used in high performance situations and the vector classes used for local
storage.
1.2.1.1 Vector Addition
Vector addition is the straightforward operation of adding all the components of one vector
to the components of another.
Geometrically, the result can be visualized by placing the second vector at the end point of
the first, then drawing a vector between the starting point of the first vector to the ending
point of the second.
Figure 3 - Vector addition
The code to add two vectors together is equally straightforward, it is useful to implement
the addition operators in the vector class.
