// vtkMFCRenderView.cpp : implementation file//#include "stdafx.h"#include "vtkMFCRenderView.h"#include "vtkMFCDocument.h"#include "vtkRenderer.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/////////////////////////////////////////////////////////////////////////////// vtkMFCRenderViewIMPLEMENT_DYNCREATE(vtkMFCRenderView, vtkMFCView)vtkMFCRenderView::vtkMFCRenderView(){  this->Renderer = vtkRenderer::New();  this->RenderWindow = vtkWin32OpenGLRenderWindow::New();  this->RenderWindow->AddRenderer(this->Renderer);  this->Interactor = vtkWin32RenderWindowInteractor::New();}vtkMFCRenderView::~vtkMFCRenderView(){  if (this->Interactor)     {    this->Interactor->Delete();    }  if (this->Renderer)     {    this->Renderer->SetRenderWindow(NULL);    }  if (this->RenderWindow)     {    this->RenderWindow->Delete();    }  if (this->Renderer)     {    this->Renderer->Delete();    }}BEGIN_MESSAGE_MAP(vtkMFCRenderView, vtkMFCView)	//{{AFX_MSG_MAP(vtkMFCRenderView)	ON_WM_CREATE()	ON_WM_SIZE()	//}}AFX_MSG_MAP	ON_COMMAND(ID_FILE_PRINT, vtkMFCRenderView::OnFilePrint)	ON_COMMAND(ID_FILE_PRINT_DIRECT, vtkMFCRenderView::OnFilePrint)	ON_COMMAND(ID_FILE_PRINT_PREVIEW, vtkMFCRenderView::OnFilePrintPreview)END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// vtkMFCRenderView drawingvoid vtkMFCRenderView::OnDraw(CDC* pDC){  CDocument* pDoc = GetDocument();  ASSERT_VALID(pDoc);    if (!this->Interactor->GetInitialized())    {    this->Interactor->SetRenderWindow(this->RenderWindow);    WNDPROC OldProc = (WNDPROC)GetWindowLong(this->m_hWnd,GWL_WNDPROC);    this->Interactor->Initialize();    SetWindowLong(this->m_hWnd,GWL_WNDPROC,(LONG)OldProc);    }    // TODO: add draw code for native data here  if (pDC->IsPrinting())    {    int size[2];    float scale;        BeginWaitCursor();    memcpy(size,this->RenderWindow->GetSize(),sizeof(int)*2);        int cxDIB = size[0];         // Size of DIB - x    int cyDIB = size[1];         // Size of DIB - y    CRect rcDest;        // get size of printer page (in pixels)    int cxPage = pDC->GetDeviceCaps(HORZRES);    int cyPage = pDC->GetDeviceCaps(VERTRES);    // get printer pixels per inch    int cxInch = pDC->GetDeviceCaps(LOGPIXELSX);    int cyInch = pDC->GetDeviceCaps(LOGPIXELSY);		scale = cxInch/this->GetPrintDPI();    //    // Best Fit case -- create a rectangle which preserves    // the DIB's aspect ratio, and fills the page horizontally.    //    // The formula in the "->bottom" field below calculates the Y    // position of the printed bitmap, based on the size of the    // bitmap, the width of the page, and the relative size of    // a printed pixel (cyInch / cxInch).    //    rcDest.bottom = rcDest.left = 0;    if (((float)cyDIB*(float)cxPage/(float)cxInch) > 	      ((float)cxDIB*(float)cyPage/(float)cyInch))      {      rcDest.top = cyPage;      rcDest.right = ((float)(cyPage*cxInch*cxDIB)) /        ((float)(cyInch*cyDIB));      }    else      {      rcDest.right = cxPage;      rcDest.top = ((float)(cxPage*cyInch*cyDIB)) /        ((float)(cxInch*cxDIB));      }         CRect	rcDestLP(rcDest);    pDC->DPtoLP(rcDestLP);    int DPI = this->RenderWindow->GetDPI();        this->RenderWindow->SetupMemoryRendering(rcDest.right/scale,                                             rcDest.top/scale,                                             pDC->m_hAttribDC);        this->RenderWindow->Render();        pDC->SetStretchBltMode(HALFTONE);        StretchBlt(pDC->GetSafeHdc(),0,0,               rcDest.right, rcDest.top,                this->RenderWindow->GetMemoryDC(),               0, 0, rcDest.right/scale, rcDest.top/scale, SRCCOPY);        this->RenderWindow->ResumeScreenRendering();        EndWaitCursor();    }  else    {    this->RenderWindow->Render();    }	  CView::OnDraw(pDC);}/////////////////////////////////////////////////////////////////////////////// vtkMFCRenderView diagnostics#ifdef _DEBUGvoid vtkMFCRenderView::AssertValid() const{  CView::AssertValid();}void vtkMFCRenderView::Dump(CDumpContext& dc) const{  CView::Dump(dc);}#endif //_DEBUG/////////////////////////////////////////////////////////////////////////////// vtkMFCRenderView message handlersint vtkMFCRenderView::OnCreate(LPCREATESTRUCT lpCreateStruct) {  if (vtkMFCView::OnCreate(lpCreateStruct) == -1)    return -1;    // TODO: Add your specialized creation code here  this->RenderWindow->SetParentId(lpCreateStruct->hwndParent);  return 0;}void vtkMFCRenderView::OnInitialUpdate(){  vtkMFCView::OnInitialUpdate();  // TODO: Add your specialized creation code here    this->RenderWindow->SetWindowId(this->m_hWnd);  this->RenderWindow->WindowInitialize();}// Define our own event handler hereLRESULT vtkMFCRenderView::WindowProc(UINT message, WPARAM wParam, LPARAM lParam){  switch (message)    {    //case WM_PAINT:     case WM_LBUTTONDOWN:     case WM_LBUTTONUP:     case WM_MBUTTONDOWN:     case WM_MBUTTONUP:     case WM_RBUTTONDOWN:     case WM_RBUTTONUP:     case WM_MOUSEMOVE:    case WM_CHAR:    case WM_TIMER:      if (this->Interactor->GetInitialized())        {        return vtkHandleMessage2(this->m_hWnd, message, wParam, lParam,                                  this->Interactor);        }      break;    }  return vtkMFCView::WindowProc(message, wParam, lParam);}void vtkMFCRenderView::OnSize(UINT nType, int cx, int cy) {  vtkMFCView::OnSize(nType, cx, cy);    // TODO: Add your message handler code here  if (this->Interactor->GetInitialized())    {    this->Interactor->SetSize(cx,cy);		    }}BOOL vtkMFCRenderView::OnPreparePrinting(CPrintInfo* pInfo) {  // TODO: call DoPreparePrinting to invoke the Print dialog box  // default preparation  pInfo->SetMinPage(1);  pInfo->SetMaxPage(1);  return DoPreparePrinting(pInfo);	}