图形学大作业（MFC单文档实现弹出菜单式实现）

 // PaintView.cpp: CPaintView 类的实现 // #include "stdafx.h" // SHARED_HANDLERS 可以在实现预览、缩略图和搜索筛选器句柄的 // ATL 项目中进行定义，并允许与该项目共享文档代码。 #ifndef SHARED_HANDLERS #include "Paint.h" #endif #include "PaintDoc.h" #include "PaintView.h" #define ROUND(a) int(a+0.5) //四舍五入 #define PI 3.1415926 //圆周率 #include "math.h" //数学头文件 #ifdef _DEBUG #define new DEBUG_NEW #endif // CPaintView IMPLEMENT_DYNCREATE(CPaintView, CView) BEGIN_MESSAGE_MAP(CPaintView, CView) // 标准打印命令 ON_COMMAND(ID_FILE_PRINT, &CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, &CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, &CPaintView::OnFilePrintPreview) ON_WM_CONTEXTMENU() ON_WM_RBUTTONUP() ON_COMMAND(ID_32772, &CPaintView::OnDDA) ON_COMMAND(ID_32773, &CPaintView::OnBresenham) ON_COMMAND(ID_32774, &CPaintView::Oncircle) ON_COMMAND(ID_32775, &CPaintView::Onellipse) ON_COMMAND(ID_32781, &CPaintView::OnBaseShape) ON_COMMAND(ID_32776, &CPaintView::On1) ON_COMMAND(ID_32777, &CPaintView::On2) ON_COMMAND(ID_32778, &CPaintView::On3) ON_COMMAND(ID_32779, &CPaintView::On4) ON_COMMAND(ID_32780, &CPaintView::On5) ON_COMMAND(ID_32782, &CPaintView::OnBezier) ON_UPDATE_COMMAND_UI(ID_32782, &CPaintView::OnUpdateBezier) ON_WM_LBUTTONDOWN() ON_COMMAND(ID_32783, &CPaintView::OnB) ON_COMMAND(ID_32784, &CPaintView::Ontianchong) ON_UPDATE_COMMAND_UI(ID_32784, &CPaintView::OnUpdatetianchong) ON_COMMAND(ID_32785, &CPaintView::Onclear) ON_COMMAND(ID_32786, &CPaintView::Onrectangle) ON_COMMAND(ID_32787, &CPaintView::Onduo) ON_COMMAND(ID_32788, &CPaintView::Onshan) ON_COMMAND(ID_32789, &CPaintView::Onhu) ON_COMMAND(ID_32790, &CPaintView::Onsystem) ON_COMMAND(ID_32791, &CPaintView::OnmanyChange) ON_COMMAND(ID_32792, &CPaintView::On32792) END_MESSAGE_MAP() // CPaintView 构造/析构 CPaintView::CPaintView() noexcept { // TODO: 在此处添加构造代码 } CPaintView::~CPaintView() { } BOOL CPaintView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: 在此处通过修改 // CREATESTRUCT cs 来修改窗口类或样式 return CView::PreCreateWindow(cs); } // CPaintView 绘图 void CPaintView::OnDraw(CDC* pDC) { CPaintDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); GetMaxX(); GetMaxY(); pDC->MoveTo(MaxX / 2, 0); //绘制坐标轴 pDC->LineTo(MaxX / 2, MaxY); pDC->MoveTo(0, MaxY / 2); pDC->LineTo(MaxX, MaxY / 2); } void CPaintView::GetMaxX() //获得屏幕宽度 { CRect Rect; GetClientRect(&Rect); MaxX = Rect.right; } void CPaintView::GetMaxY() //获得屏幕高度 { CRect Rect; GetClientRect(&Rect); MaxY = Rect.bottom; } // CPaintView 打印 void CPaintView::OnFilePrintPreview() { #ifndef SHARED_HANDLERS AFXPrintPreview(this); #endif } BOOL CPaintView::OnPreparePrinting(CPrintInfo* pInfo) { // 默认准备 return DoPreparePrinting(pInfo); } void CPaintView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: 添加额外的打印前进行的初始化过程 } void CPaintView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: 添加打印后进行的清理过程 } void CPaintView::OnRButtonUp(UINT /* nFlags */, CPoint point) { ClientToScreen(&point); OnContextMenu(this, point); } void CPaintView::OnContextMenu(CWnd* /* pWnd */, CPoint point) { #ifndef SHARED_HANDLERS theApp.GetContextMenuManager()->ShowPopupMenu(IDR_POPUP_EDIT, point.x, point.y, this, TRUE); #endif } // CPaintView 诊断 #ifdef _DEBUG void CPaintView::AssertValid() const { CView::AssertValid(); } void CPaintView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CPaintDoc* CPaintView::GetDocument() // 非调试版本是内联的 { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CPaintDoc))); return (CPaintDoc*)m_pDocument; } #endif //_DEBUG // CPaintView 消息处理程序 //DDA算法画直线 void CPaintView::OnDDA() { RECT rect1; float dx, dy, epsl, k, x0, x1, y0, y1; float x, y, xIncre, yIncre; GetClientRect(&rect1); int width; int height; width = rect1.right; height = rect1.bottom; x0 = 500; x1 = 100; y0 = 500; y1 = 100; CClientDC dc(this); dx = x1 - x0; dy = y1 - y0; x = x0; y = y0; if (abs((int)dx) > abs((int)dy)) epsl = abs((int)dx); else epsl = abs((int)dy); xIncre = (float)(dx / epsl); yIncre = (float)(dy / epsl); for (k = 0; k <= epsl; k++) { dc.SetPixel((int)(x + 0.5), height - ((int)(y + 0.5)), RGB(255, 0, 0)); x = x + xIncre; y = y + yIncre; } } //Bresenham算法画直线 void CPaintView::OnBresenham() { CClientDC dc(this); int x0 = 60, y0 = 50, x1 = 300, y1 = 200, x = x0, y = y0; double e = -0.5; int dx = x1 - x0; int dy = y1 - y0; double k = dy * 1.0 / dx; for (int i = 0; i <= dx; i++) { dc.SetPixel(int(x), int(y), RGB(0, 0, 0)); x = x + 1; e = e + k; if (e >= 0) { y++; e = e - 1; } } } //系统绘制直线 void CPaintView::Onsystem() { CClientDC dc(this); dc.LineTo(200,350); } //绘制圆 void CPaintView::Oncircle() { float x = 0, y, d, w, h; float r; RECT rect2; GetClientRect(&rect2); w = rect2.right; h = rect2.bottom; r = w / 5; y = r; d = 1 - r; CClientDC dc(this); while (x <= y) { dc.SetPixel(x + w / 2, h - (y + h / 2), RGB(255, 0, 255)); dc.SetPixel(y + w / 2, h - (x + h / 2), RGB(255, 0, 255)); dc.SetPixel(-y + w / 2, h - (x + h / 2), RGB(255, 0, 255)); dc.SetPixel(-x + w / 2, h - (y + h / 2), RGB(255, 0, 255)); dc.SetPixel(-x + w / 2, h - (-y + h / 2), RGB(255, 0, 255)); dc.SetPixel(-y + w / 2, h - (-x + h / 2), RGB(255, 0, 255)); dc.SetPixel(y + w / 2, h - (-x + h / 2), RGB(255, 0, 255)); dc.SetPixel(x + w / 2, h - (-y + h / 2), RGB(255, 0, 255)); if (d < 0) { d += 2 * x + 3; } else { d += 2 * (x - y) + 5; y--; } x++; } } //绘制椭圆 void CPaintView::Onellipse() { RECT rect1; int ox, oy, a, b; GetClientRect(&rect1); ox = 300; //圆心x坐标 oy = 200; //圆心y坐标 a = 300; //长半轴 b = 100; //短半轴 CClientDC dc(this); float d = b * b + a * a*(-b + 0.25); int x = 0, y = b; int fx = a * a / sqrt((float)a*a + b * b); while (x != fx) { if (d < 0) { d += b * b*(2 * x + 3); } else { --y; d += b * b*(2 * x + 3) + a * a*(-2 * y + 2); } ++x; dc.SetPixel(ox + x, oy + y, RGB(255, 0, 0)); dc.SetPixel(ox - x, oy + y, RGB(255, 0, 0)); dc.SetPixel(ox + x, oy - y, RGB(255, 0, 0)); dc.SetPixel(ox - x, oy - y, RGB(255, 0, 0)); } d = b * b*(x + 0.5)*(x + 0.5) + a * a*(y - 1)*(y - 1) - a * a*b*b; while (y > 0) { if (d < 0) { ++x; d += b * b*(2 * x + 2) + a * a*(-2 * y + 3); } else d += a * a*(-2 * y + 3); --y; dc.SetPixel(ox + x, oy + y, RGB(255, 0, 0)); dc.SetPixel(ox - x, oy + y, RGB(255, 0, 0)); dc.SetPixel(ox + x, oy - y, RGB(255, 0, 0)); dc.SetPixel(ox - x, oy - y, RGB(255, 0, 0)); } } //绘制矩形 void CPaintView::Onrectangle() { CClientDC dc(this); dc.Rectangle(50,50,200,100); } //多边形 void CPaintView::Onduo() { CClientDC dc(this); CPoint pt[6]; CRect rc; GetClientRect(&rc); dc.SetViewportOrg(rc.right / 4, rc.bottom * 3 / 4); pt[0].x = -10, pt[0].y = 0; pt[1].x = -40, pt[1].y = 40; pt[2].x = 50, pt[2].y = 40; pt[3].x = 10, pt[3].y = 0; pt[4].x = 50, pt[4].y = -40; pt[5].x = -40, pt[5].y = -40; dc.Polygon(pt, 6); } //绘制扇形 void CPaintView::Onshan() { CClientDC dc(this); CRect rc; GetClientRect(&rc); dc.SetViewportOrg(rc.right / 1.5, rc.bottom / 4); dc.Pie(-90, -90, 90, 90, -200, 0, 200, 0); } //绘制圆弧 void CPaintView::Onhu()