XNA 4 3D Game Development by Example:Beginner's Guide
上QQ阅读APP看书,第一时间看更新

The View matrix

The last bit of information we need our camera to provide in order to be able to draw a scene is called the View matrix. This matrix defines the position and direction from which the camera views the 3D world. In other words, we combine our camera position and the point we are looking at, to create the structure that XNA needs, to interpret how we wish our camera to view the 3D scene.