OpenGL 模型绘制实例,实现线框正四面体，实体正四面体，线框正八面体，实体正八面体，线框球面，实体球面，线框茶壶，实体茶壶，线框球面线框圆锥面，线框圆环面绘制-Examples of model rendering OpenGL realize wirefr a me tetrahedron, the entity tetrahedron, octahedron wirefr a me, solid regular octahedron, wirefr a me sphere, spher