扫面线z buffer算法，读入obj文件，绘制一帧-Scan line z buffer algorithm for face, read into the obj file, draw a

消除隐藏面算法。z-buffer 扫描线算法．-Elimination of hidden surface algorithms. z-buffer scan line algorithm.

1. 实现深度缓存(z-buffer)算法. 输入数据是简单的多边形网格. 2. 实现简单的光线跟踪(Ray-tracing)算法. 输入应包含多边形网格(多面体)和圆. -1. To achieve the depth buffer (z-buffer) algorithm. Input data is a simple polygon mesh. 2. To achieve a simple ray tracing (Ray-tracing) algorithm. Polyg

1. 实现深度缓存(z-buffer)算法. 输入数据是简单的多边形网格. 2. 实现简单的光线跟踪(Ray-tracing)算法. 输入应包含多边形网格(多面体)和圆. -1. To achieve the depth buffer (z-buffer) algorithm. Input data is a simple polygon mesh. 2. To achieve a simple ray tracing (Ray-tracing) algorithm. Polyg