小编Bla*_*Cat的帖子

我想用我的代码创建一个图形(2d图形),如何在opengl中创建一个简单的2d图形？我是opengl的新手,所以也许你可以解释一下我的代码是如何工作的.顺便说一句,这是我的代码:

    #include <iostream>
using namespace std;

int main ()
{
      double dt = 0.10;    //(it is constant)
      double t = 0.00;

      double dx = 0.10;    //(it is constant)
      double x = 0.00;

      double ddy = 1.00;   //(it is constant)
      double dy = 0.00;
      double y = 1.00;

      cout<<"t   = "<<t<<endl;
      cout<<"dx  = "<<dx<<endl;
      cout<<"x   = "<<x<<endl;
      cout<<"dy  = "<<dy<<endl;
      cout<<"y   = "<<y<<endl;
      cout<<endl;

      while(t<=5) 
      {
                  x = x + dx*dt;
                  dy = dy - ddy * dt * dt;
                  y …