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
no connection could be made because the target machine actively refused it.问题解决
查看>>
No Datastore Session bound to thread, and configuration does not allow creation of non-transactional
查看>>
No fallbackFactory instance of type class com.ruoyi---SpringCloud Alibaba_若依微服务框架改造---工作笔记005
查看>>
No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalanc
查看>>
No mapping found for HTTP request with URI [/...] in DispatcherServlet with name ...的解决方法
查看>>
No mapping found for HTTP request with URI [/logout.do] in DispatcherServlet with name 'springmvc'
查看>>
No module named 'crispy_forms'等使用pycharm开发
查看>>
No module named 'pandads'
查看>>
No module named cv2
查看>>
No module named tensorboard.main在安装tensorboardX的时候遇到的问题
查看>>
No module named ‘MySQLdb‘错误解决No module named ‘MySQLdb‘错误解决
查看>>
No new migrations found. Your system is up-to-date.
查看>>
No qualifying bean of type XXX found for dependency XXX.
查看>>
No qualifying bean of type ‘com.netflix.discovery.AbstractDiscoveryClientOptionalArgs＜?＞‘ available
查看>>
No resource identifier found for attribute 'srcCompat' in package的解决办法
查看>>
no session found for current thread
查看>>
No static resource favicon.ico.
查看>>
no such file or directory AndroidManifest.xml
查看>>
No toolchains found in the NDK toolchains folder for ABI with prefix: mips64el-linux-android
查看>>
NO.23 ZenTaoPHP目录结构
查看>>