这是一个我用directX写的小游戏程序，里面有一些炮弹发射命中目标的计算算法，还有鼠标控制的运动目标的一些方法-This is one I used to write small directX Games, there are a number of shells fired hit the target of calculation algorithm, mouse control campaign targets some of the ways

基于dx9.0的地形渲染的例子，包含了一个地形网格的计算方法的类，可以方便地集成到你的工程中去。-Terrain rendering based dx9.0 example, contains a topographic grid of the calculation method of the class, can be easily integrated into your project to go.