VC++绘制铁路道岔
本文共 2558 字，大约阅读时间需要 8 分钟。
绘制代码；
void CDaocaView::OnDraw(CDC* pDC){ CDaocaDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here COLORREF DaoChaColor= RGB(0,0,0); int width = m_rect.Width() ; int height = m_rect.Height() ; CPen newpen(PS_SOLID,60,DaoChaColor); CPen newpen1(PS_SOLID,60,RGB(0,255,255)); CPen *pOldPen = pDC->SelectObject(&newpen); pDC->MoveTo(m_rect.left,(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width*0.33),(int)(m_rect.top + height*0.5)); pDC->MoveTo((int)(m_rect.left +width*0.33),(int)(m_rect.top+height*0.5)); pDC->LineTo((int)(m_rect.left +width*0.5),(int)(m_rect.top+(height*0.5+width*(sqrt(3))/6))); pDC->MoveTo((int)(m_rect.left +width*0.67),(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width),m_rect.top+height*0.5); m_rect.left=240; m_rect.right=440; pDC->MoveTo(m_rect.left,(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width/3),(int)(m_rect.top + height*0.5)); pOldPen = pDC->SelectObject(&newpen1); pDC->MoveTo((int)(m_rect.left +width/3),(int)(m_rect.top+height*0.5)); pDC->LineTo((int)(m_rect.left +width*2/3),(int)(m_rect.top+height*0.5)); pOldPen = pDC->SelectObject(&newpen); pDC->MoveTo((int)(m_rect.left +width*2/3),(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width),m_rect.top+height*0.5); m_rect.left=470; m_rect.right=670; pDC->MoveTo(m_rect.left,(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width/3),(int)(m_rect.top + height*0.5)); pDC->MoveTo((int)(m_rect.left +width/3),(int)(m_rect.top+height*0.5)); pDC->LineTo((int)(m_rect.left +width*0.5),(int)(m_rect.top+(height*0.5-width*(sqrt(3))/6))); pDC->MoveTo((int)(m_rect.left +width*2/3),(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width),m_rect.top+height*0.5); m_rect.left=700; m_rect.right=900; pDC->MoveTo(m_rect.left,(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width/3),(int)(m_rect.top + height*0.5)); pDC->MoveTo((int)(m_rect.left +width/3),(int)(m_rect.top+height*0.5)); pDC->LineTo((int)(m_rect.left +width/2),(int)(m_rect.top+(height*0.5+width*(sqrt(3))/6))); pDC->MoveTo((int)(m_rect.left +width*2/3),(int)(m_rect.top + height*0.5)); pDC->LineTo((int)(m_rect.left +width),m_rect.top+height*0.5); pDC->SetBkMode(TRANSPARENT); pDC->SelectObject(pOldPen);} 头文件添加一个成员变量：CRect m_rect;
初始化；
CDaocaView::CDaocaView(){ // TODO: add construction code here m_rect.left=10; m_rect.top=10; m_rect.right=210; m_rect.bottom=210;} 包含<math.h>；
绘制效果如下；
我也不太了解什么是道岔；可能是指的铁路交叉的地方；
转载地址：http://kpyy.baihongyu.com/
你可能感兴趣的文章
mysql insert update 同时执行_MySQL进阶三板斧（三）看清“触发器 (Trigger)”的真实面目...
查看>>
mysql interval显示条件值_MySQL INTERVAL关键字可以使用哪些不同的单位值？
查看>>
Mysql join原理
查看>>
MySQL Join算法与调优白皮书（二）
查看>>
Mysql order by与limit混用陷阱
查看>>
Mysql order by与limit混用陷阱
查看>>
mysql order by多个字段排序
查看>>
MySQL Order By实现原理分析和Filesort优化
查看>>
mysql problems
查看>>
mysql replace first,MySQL中处理各种重复的一些方法
查看>>
MySQL replace函数替换字符串语句的用法（mysql字符串替换）
查看>>
mysql replace用法
查看>>
Mysql Row_Format 参数讲解
查看>>
mysql select， from ，join ，on ，where groupby,having ,order by limit的执行顺序和书写顺序
查看>>
MySQL Server 5.5安装记录
查看>>
mysql server has gone away
查看>>
mysql slave 停了_slave 停止。求解决方法
查看>>
MySQL SQL 优化指南：主键、ORDER BY、GROUP BY 和 UPDATE 优化详解
查看>>
MYSQL sql语句针对数据记录时间范围查询的效率对比
查看>>
mysql sum 没返回,如果没有找到任何值，我如何在MySQL中获得SUM函数以返回'0'？
查看>>