opengl中简单的画图程序，类似于绘图，有菜单可以选择绘制不同图形-opengl in the simple drawing program, similar to the drawings, there is the menu you can choose to draw different shapes

Opengl es 1.0 例子，实现三角形画图和旋转-Opengl es 1.0 example, the triangle drawing and rotation to achieve

根据外接矩形画圆，用的opengl程序画图的代码，可自行修改使用~-According circle enclosing rectangle, with the opengl drawing code program can modify to use ~