图形学作业：直线VC++画法

图形学作业：直线VC画法 void CWuhuayuView::OnDraw(CDC* pDC) { CWuhuayuDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here //bresenham自己画的直线 int x0=10,y0=10,x1=700,y1=700; int x,y,dx,dy,e; dx=x1-x0; dy=y1-y0; e=-dx; x=x0; y=y0; for(int i=0;i<=dx;i++) { CPen AxisPen; AxisPen.CreatePen(PS_SOLID,4,RGB(222,111,222)); pDC->SelectObject(&AxisPen); pDC->MoveTo(x, y); pDC->LineTo(x, y); x++;e=e+2*dy; if(e>=0){y++;e=e-2*dx;} } }