图片马赛克效果，数字图像处理的基本操作

// MosaicViewView.cpp : implementation of the CMosaicViewView class // #include "stdafx.h" #include "MosaicView.h" #include "MosaicViewDoc.h" #include "MosaicViewView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CMosaicViewView IMPLEMENT_DYNCREATE(CMosaicViewView, CView) BEGIN_MESSAGE_MAP(CMosaicViewView, CView) //{{AFX_MSG_MAP(CMosaicViewView) ON_COMMAND(ID_VIEW, OnView) //}}AFX_MSG_MAP // Standard printing commands ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMosaicViewView construction/destruction CMosaicViewView::CMosaicViewView() { // TODO: add construction code here m_hDrawDib=NULL; m_hDrawDib=DrawDibOpen(); HBITMAP hBmp=(HBITMAP)LoadImage(NULL,"bitmap.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE); HDC hMemDC=CreateCompatibleDC(NULL); if(hMemDC) { GetObject(hBmp,sizeof(bm),&bm); m_size=CSize(bm.bmWidth,bm.bmHeight); BITMAPINFOHEADER RGB32BITSBITMAPINFO= {sizeof(BITMAPINFOHEADER),bm.bmWidth,bm.bmHeight, 1,32,BI_RGB,0,0,0,0}; m_bmpSrc=CreateDIBSection(hMemDC,(BITMAPINFO*)&RGB32BITSBITMAPINFO, DIB_RGB_COLORS,(VOID**)&m_clrSrc,NULL,0); if(m_bmpSrc) { HBITMAP hOldBmp=(HBITMAP)SelectObject(hMemDC,m_bmpSrc); HDC hDC=CreateCompatibleDC(hMemDC); if(hDC) { HBITMAP hOldBmp2=(HBITMAP)SelectObject(hDC,hBmp); BitBlt(hMemDC,0,0,bm.bmWidth,bm.bmHeight,hDC, 0,0,SRCCOPY); SelectObject(hDC,hOldBmp2); DeleteDC(hDC); } SelectObject(hMemDC,hOldBmp); } DeleteDC(hMemDC); } } CMosaicViewView::~CMosaicViewView() { if(m_hDrawDib!=NULL) { DrawDibClose(m_hDrawDib); m_hDrawDib=NULL; } if(m_bmpSrc!=NULL) DeleteObject(m_bmpSrc); } BOOL CMosaicViewView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CMosaicViewView drawing void CMosaicViewView::OnDraw(CDC* pDC) { CMosaicViewDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here } ///////////////////////////////////////////////////////////////////////////// // CMosaicViewView printing BOOL CMosaicViewView::OnPreparePrinting(CPrintInfo* pInfo) { // default preparation return DoPreparePrinting(pInfo); } void CMosaicViewView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add extra initialization before printing } void CMosaicViewView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add cleanup after printing } ///////////////////////////////////////////////////////////////////////////// // CMosaicViewView diagnostics #ifdef _DEBUG void CMosaicViewView::AssertValid() const { CView::AssertValid(); } void CMosaicViewView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CMosaicViewDoc* CMosaicViewView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMosaicViewDoc))); return (CMosaicViewDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CMosaicViewView message handlers void CMosaicViewView::OnView() { // TODO: Add your command handler code here if(m_bmpSrc==NULL||m_hDrawDib==NULL)return; Invalidate(); int nTileSize=10; int nTileNum=((m_size.cx+nTileSize-1)/nTileSize)*((m_size.cy+nTileSize-1)/nTileSize); POINT *pt=new POINT[nTileNum]; int x=0; int y=0; int i; for(i=0;i<nTileNum;i++) { pt[i].x=x; pt[i].y=y; x=x+nTileSize; if(x>m_size.cx) { x=0; y=y+nTileSize; } } BITMAPINFOHEADER RGB32BITSBITMAPINFO= {sizeof(BITMAPINFOHEADER),m_size.cx,m_size.cy, 1,32,BI_RGB,0,0,0,0,0}; CPaintDC dc(this); DrawDibRealize(m_hDrawDib,dc.GetSafeHdc(),TRUE); double fMax=RAND_MAX; for(i=nTileNum-1;i>=0;i--) { int n=(int)((double)nTileNum*rand()/fMax); x=pt[n].x; y=pt[n].y; DrawDibDraw(m_hDrawDib,dc.GetSafeHdc(),10+x,10+y,nTileSize,nTileSize, &RGB32BITSBITMAPINFO,(LPVOID)m_clrSrc, x,y,nTileSize,nTileSize,DDF_BACKGROUNDPAL); pt[n].x=pt[i].x; pt[n].y=pt[i].y ; Sleep(20); } delete[] pt; DrawDibDraw(m_hDrawDib,dc.GetSafeHdc(),10,10,m_size.cx,m_size.cy, &RGB32BITSBITMAPINFO,(LPVOID)m_clrSrc, 0,0,m_size.cx,m_size.cy,DDF_BACKGROUNDPAL); }