VC++ 6.0绘制曲线正弦波

VC++ 6.0 绘制曲线正弦波，一种比较有规律的曲线，源代码也是相当简单的好种。 　　//建立画笔 　　CPen cpen,pen; 　　pen.CreatePen(PS_SOLID,4,RGB(0,0,0)); 　　cpen.CreatePen(PS_SOLID,2,RGB(0,0,255)); 　　pDC->SelectObject(&cpen); 　　//指定原点 　　pDC->SetViewportOrg(100,245); 　　pDC->SetTextColor(RGB(255,0,0)); 　　//绘制横坐标 　　CString sPIText[]={"-1/2π","","1/2π","π","3/2π","2π","5/2π","3π","7/2π","4π","9/2π","5π"}; 　　for(int n=-1,nTmp=0;nTmpLineTo(60*n,0); 　　 pDC->LineTo(60*n,-5); 　　 pDC->MoveTo(60*n,0); 　　 pDC->TextOut(60*n-sPIText[n+1].GetLength()*3,16,sPIText[n+1]); 　　} 　　double y,radian; 　　pDC->SelectObject(&pen); 　　for(int x=-60;xMoveTo((int)x,(int)y); 　　 pDC->LineTo((int)x,(int)y); 　　}