Update WindmillView.cpp
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xixu-me committed
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commit
04a8ff60b7
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+91
-64
@@ -58,92 +58,115 @@ void CWindmillView::OnDraw(CDC *pDC) {
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if (!pDoc)
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return;
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// TODO: add draw code for native data here
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// 设置定时器
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SetTimer(1, 40, NULL);
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SetTimer(1, 1, NULL);
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// 获取客户端区域并设置坐标系
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// 获取客户端矩形区域
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CRect rect;
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GetClientRect(&rect);
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pDC->SetMapMode(MM_ANISOTROPIC);
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pDC->SetWindowExt(rect.Width(), rect.Height());
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pDC->SetViewportExt(rect.Width(), -rect.Height());
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pDC->SetViewportOrg(rect.Width() / 2, rect.Height() / 2);
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// 定义画笔和画刷
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// 创建兼容的内存设备上下文
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CDC memDC;
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memDC.CreateCompatibleDC(pDC);
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// 创建兼容的位图并选择到内存设备上下文中
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CBitmap NewBitmap, *pOldBitmap;
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NewBitmap.CreateCompatibleBitmap(pDC, rect.Width(), rect.Height());
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pOldBitmap = memDC.SelectObject(&NewBitmap);
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// 设置映射模式和视口
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memDC.SetMapMode(MM_ANISOTROPIC);
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memDC.SetWindowExt(rect.Width(), rect.Height());
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memDC.SetViewportExt(rect.Width(), -rect.Height());
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memDC.SetViewportOrg(rect.Width() / 2, rect.Height() / 2);
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rect.OffsetRect(-rect.Width() / 2, -rect.Height() / 2);
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// 画风车底座
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CPen NewPen, *pOldPen;
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CBrush NewBrush, *pOldBrush;
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NewPen.CreatePen(PS_SOLID, 1, RGB(109, 104, 106));
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pOldPen = memDC.SelectObject(&NewPen);
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NewBrush.CreateSolidBrush(RGB(109, 104, 106));
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pOldBrush = memDC.SelectObject(&NewBrush);
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// 定义风车叶片和底座的参数
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float fAngle = m_nAngle * PI / 180;
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int R = 300, r = 75, h = 10;
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int baseWidthTop = 100;
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int baseWidthBottom = 300;
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int baseHeight = 400;
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int bias = 65;
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POINT pt[4]{
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{ -baseWidthTop / 2, h + bias },
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{ baseWidthTop / 2, h + bias },
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{ baseWidthBottom / 2, h + bias - baseHeight },
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{ -baseWidthBottom / 2, h + bias - baseHeight }
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{ -baseWidthTop / 2, -bias },
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{ baseWidthTop / 2, -bias },
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{ baseWidthBottom / 2, -bias + baseHeight },
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{ -baseWidthBottom / 2, -bias + baseHeight }
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};
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memDC.Polygon(pt, 4);
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// 绘制风车底座
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NewPen.CreatePen(PS_SOLID, 1, RGB(109, 104, 106));
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pOldPen = pDC->SelectObject(&NewPen);
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NewBrush.CreateSolidBrush(RGB(109, 104, 106));
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pOldBrush = pDC->SelectObject(&NewBrush);
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pDC->Polygon(pt, 4);
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pDC->SelectObject(pOldBrush);
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memDC.SelectObject(pOldBrush);
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NewBrush.DeleteObject();
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pDC->SelectObject(pOldPen);
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memDC.SelectObject(pOldPen);
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NewPen.DeleteObject();
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// 绘制风车叶片（蓝色部分）
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NewPen.CreatePen(PS_SOLID, 500, RGB(0, 82, 217));
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pOldPen = pDC->SelectObject(&NewPen);
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// 画风车叶片
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float fAngle = m_nAngle * PI / 180;
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int R = 300, r = 75, h = 10;
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// 画第一组叶片
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NewPen.CreatePen(PS_SOLID, 1, RGB(0, 82, 217));
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pOldPen = memDC.SelectObject(&NewPen);
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NewBrush.CreateSolidBrush(RGB(0, 82, 217));
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pOldBrush = pDC->SelectObject(&NewBrush);
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pDC->BeginPath();
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pDC->MoveTo(0, h);
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pDC->LineTo(R * cos(fAngle), R * sin(fAngle) + h);
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pDC->LineTo(R * cos(fAngle) + r * sin(fAngle), R * sin(fAngle) + h - r * cos(fAngle));
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pDC->LineTo(r * sqrt(2) * cos(fAngle - PI / 4), r * sqrt(2) * sin(fAngle - PI / 4) + h);
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pDC->LineTo(r * cos(fAngle), r * sin(fAngle) + h);
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pDC->MoveTo(0, h);
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pDC->LineTo(R * cos(fAngle + PI), R * sin(fAngle + PI) + h);
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pDC->LineTo(R * cos(fAngle + PI) + r * sin(fAngle + PI), R * sin(fAngle + PI) + h - r * cos(fAngle + PI));
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pDC->LineTo(r * sqrt(2) * cos(fAngle + PI - PI / 4), r * sqrt(2) * sin(fAngle + PI - PI / 4) + h);
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pDC->LineTo(r * cos(fAngle + PI), r * sin(fAngle + PI) + h);
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pDC->EndPath();
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pDC->FillPath();
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pDC->SelectObject(pOldBrush);
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pOldBrush = memDC.SelectObject(&NewBrush);
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memDC.BeginPath();
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memDC.MoveTo(0, h);
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memDC.LineTo(R * cos(fAngle), R * sin(fAngle) + h);
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memDC.LineTo(R * cos(fAngle) + r * sin(fAngle), R * sin(fAngle) + h - r * cos(fAngle));
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memDC.LineTo(r * sqrt(2) * cos(fAngle - PI / 4), r * sqrt(2) * sin(fAngle - PI / 4) + h);
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memDC.LineTo(0, h);
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memDC.MoveTo(0, h);
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memDC.LineTo(R * cos(fAngle + PI), R * sin(fAngle + PI) + h);
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memDC.LineTo(R * cos(fAngle + PI) + r * sin(fAngle + PI), R * sin(fAngle + PI) + h - r * cos(fAngle + PI));
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memDC.LineTo(r * sqrt(2) * cos(fAngle + PI - PI / 4), r * sqrt(2) * sin(fAngle + PI - PI / 4) + h);
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memDC.LineTo(0, h);
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memDC.EndPath();
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memDC.FillPath();
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memDC.SelectObject(pOldBrush);
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NewBrush.DeleteObject();
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pDC->SelectObject(pOldPen);
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memDC.SelectObject(pOldPen);
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NewPen.DeleteObject();
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// 绘制风车叶片（黄色部分）
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NewPen.CreatePen(PS_SOLID, 500, RGB(236, 189, 101));
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pOldPen = pDC->SelectObject(&NewPen);
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// 画第二组叶片
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NewPen.CreatePen(PS_SOLID, 1, RGB(236, 189, 101));
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pOldPen = memDC.SelectObject(&NewPen);
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NewBrush.CreateSolidBrush(RGB(236, 189, 101));
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pOldBrush = pDC->SelectObject(&NewBrush);
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pDC->BeginPath();
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pDC->MoveTo(0, h);
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pDC->LineTo(R * cos(fAngle + PI / 2), R * sin(fAngle + PI / 2) + h);
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pDC->LineTo(R * cos(fAngle + PI / 2) + r * sin(fAngle + PI / 2), R * sin(fAngle + PI / 2) + h - r * cos(fAngle + PI / 2));
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pDC->LineTo(r * sqrt(2) * cos(fAngle + PI / 2 - PI / 4), r * sqrt(2) * sin(fAngle + PI / 2 - PI / 4) + h);
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pDC->LineTo(r * cos(fAngle + PI / 2), r * sin(fAngle + PI / 2) + h);
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pDC->MoveTo(0, h);
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pDC->LineTo(R * cos(fAngle - PI / 2), R * sin(fAngle - PI / 2) + h);
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pDC->LineTo(R * cos(fAngle - PI / 2) + r * sin(fAngle - PI / 2), R * sin(fAngle - PI / 2) + h - r * cos(fAngle - PI / 2));
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pDC->LineTo(r * sqrt(2) * cos(fAngle - PI / 2 - PI / 4), r * sqrt(2) * sin(fAngle - PI / 2 - PI / 4) + h);
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pDC->LineTo(r * cos(fAngle - PI / 2), r * sin(fAngle - PI / 2) + h);
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pDC->EndPath();
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pDC->FillPath();
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pDC->SelectObject(pOldBrush);
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pOldBrush = memDC.SelectObject(&NewBrush);
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memDC.BeginPath();
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memDC.MoveTo(0, h);
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memDC.LineTo(R * cos(fAngle + PI / 2), R * sin(fAngle + PI / 2) + h);
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memDC.LineTo(R * cos(fAngle + PI / 2) + r * sin(fAngle + PI / 2), R * sin(fAngle + PI / 2) + h - r * cos(fAngle + PI / 2));
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memDC.LineTo(r * sqrt(2) * cos(fAngle + PI / 2 - PI / 4), r * sqrt(2) * sin(fAngle + PI / 2 - PI / 4) + h);
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memDC.LineTo(0, h);
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memDC.MoveTo(0, h);
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memDC.LineTo(R * cos(fAngle - PI / 2), R * sin(fAngle - PI / 2) + h);
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memDC.LineTo(R * cos(fAngle - PI / 2) + r * sin(fAngle - PI / 2), R * sin(fAngle - PI / 2) + h - r * cos(fAngle - PI / 2));
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memDC.LineTo(r * sqrt(2) * cos(fAngle - PI / 2 - PI / 4), r * sqrt(2) * sin(fAngle - PI / 2 - PI / 4) + h);
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memDC.LineTo(0, h);
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memDC.EndPath();
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memDC.FillPath();
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memDC.SelectObject(pOldBrush);
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NewBrush.DeleteObject();
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pDC->SelectObject(pOldPen);
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memDC.SelectObject(pOldPen);
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NewPen.DeleteObject();
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// 将内存设备上下文中的内容复制到屏幕设备上下文中
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pDC->BitBlt(0, 0, rect.Width(), rect.Height(), &memDC, -rect.Width() / 2, -rect.Height() / 2, SRCCOPY);
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// 清理资源
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memDC.SelectObject(pOldBitmap);
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NewBitmap.DeleteObject();
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memDC.DeleteDC();
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}
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// CWindmillView printing
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@@ -182,11 +205,15 @@ CWindmillDoc *CWindmillView::GetDocument() const // non-debug version is inline
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// CWindmillView message handlers
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void CWindmillView::OnTimer(UINT_PTR nIDEvent) {
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// TODO: Add your message handler code here and/or call default
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m_nAngle += 5;
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// 增加角度
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m_nAngle += 1;
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// 如果角度超过360度，重置为0
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if (m_nAngle >= 360)
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m_nAngle = 0;
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Invalidate();
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// 使视图无效以触发重绘，但不擦除背景
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Invalidate(FALSE);
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CView::OnTimer(nIDEvent);
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}
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