计算机图形学实验一

}

}

}

dc.SetPixel(x,y,fill); x++; current=dc.GetPixel(x,y); x=s_point.x; x--;

current=dc.GetPixel(x,y);

while((current!=boundary)&&(current!=fill))

{

dc.SetPixel(x,y,fill); x--;

current=dc.GetPixel(x,y);

}

x=s_point.x;

说明：

（1）双击后，出现需填充的多边形，单击相关功能菜单实现区域填充。 （2）进行种子填充，需右击多边形内一点，作为开始填充的种子点。

void CMyView::OnLButtonDblClk(UINT nFlags, CPoint point) { }

RedrawWindow();

CDC* pDC=GetDC();

CPen newpen(PS_SOLID,1,RGB(255,0,0)); CPen *old=pDC->SelectObject(&newpen); spt[0]=CPoint(100,100); //绘制多边形区域 spt[1]=CPoint(300,100); spt[2]=CPoint(250,250); spt[3]=CPoint(100,250); spt[4]=CPoint(150,200); spt[5]=CPoint(90,180); spt[6]=CPoint(150,150); spt[7]=CPoint(100,100); pDC->Polyline(spt,8); pDC->SelectObject(old); ReleaseDC(pDC);

CView::OnLButtonDblClk(nFlags, point);

void CMyView::OnRButtonDown(UINT nFlags, CPoint point) { s_point=point; //选择种子点

CView::OnRButtonDown(nFlags, point);