VC++绘制铁路道岔

爱被打了一巴掌 2022-11-14 11:44 141阅读 0赞

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；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70][]

我也不太了解什么是道岔；可能是指的铁路交叉的地方；

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70]: /images/20221022/e77e94b5bf0145de8b509d18f255a4a4.png