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最新推荐文章于 2011-02-21 21:02:00 发布

xd_code

最新推荐文章于 2011-02-21 21:02:00 发布

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CC 4.0 BY-SA版权

文章标签： math.h

本文链接：https://blog.youkuaiyun.com/xd_code/article/details/1412356

原创：

#include "math.h"

double pi = 3.1415926535;
void CVectorView::OnDraw(CDC* pDC)
{
CVectorDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
  return;

   double percentY,percentX1,percentX2;
   percentY=(1-sin(0.1*pi))/(1+sin(0.3*pi));
   percentX1=0.5-1 / (4 * cos(0.2 * pi));
   percentX2=0.5+1 / (4 * cos(0.2 * pi));

   CPoint point[5];
   CPoint m_ptBegin,m_ptEnd;
   m_ptBegin=CPoint(100,100);
   m_ptEnd=CPoint(400,400);

point[0].x=(m_ptEnd.x - m_ptBegin.x)/2.0 + m_ptBegin.x;
point[0].y=m_ptBegin.y;

   point[1].x=m_ptBegin.x;
   point[1].y=(m_ptEnd.y - m_ptBegin.y) * percentY + m_ptBegin.y;

   point[4].x=m_ptEnd.x;
   point[4].y=(m_ptEnd.y - m_ptBegin.y) * percentY + m_ptBegin.y;

point[2].x=(m_ptEnd.x - m_ptBegin.x) * percentX1 + m_ptBegin.x;
point[2].y=m_ptEnd.y;

   point[3].x=(m_ptEnd.x - m_ptBegin.x) * percentX2 + m_ptBegin.x;
   point[3].y=m_ptEnd.y;
/*
   for(int i=0;i<5;i++)
   {
    pDC->MoveTo(point[i]);
    pDC->LineTo(point[(i+2)%5]);
   }
*/
   pDC->MoveTo(point[0]);
   for(int i=0;i<5;i++)
   {
    pDC->LineTo(point[i]);
   }
   pDC->LineTo(point[0]);
}