商业编程-源码-OpenGL源代码 oglwrapperclass_src.zip

/***************************************************** Copyright Notice & Disclaimer Copyright � Alessandro Falappa Permission to use, copy, modify, and distribute this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice, author statement appear in all copies of this software and related documentation. If you make enhancement or you discover bugs, please let me know THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ALESSANDRO FALAPPA BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. /////////////////////////////////////////////// History v 1.0: first version v 1.1: added CGLDispList helper class changed previous disp list service in StockDispList v 1.2: added CGLTesselator helper class added GLCommands pair added CGLQuadric wrapper class ******************************************************/ // CGLEnabledView.cpp : implementation file of version 1.2 // #include "stdafx.h" /******************* NOTE ABOUT LIBRARIES INCLUSION: - Remember to include the appropriate libraries in the link phase (look at Project Settings under the Link tab) - If you were lucky enough to get SGI's implementation (at present it's not availabl nor supported) you can play with it also, just include that libraries. SGI's version is faster if you have no GL acceleration and if you own a MMX processor - These includes below can be moved to stdafx.h to speed up compilation ********************/ //* MS openGL libraries (link with OPENGL32.LIB and GLU32.LIB) #include "gl\gl.h" #include "gl\glu.h" //*/ /* SGI openGL libraries (link with OPENGL.LIB and GLU.LIB) #include "[path-of-SGI-sdk]\include\gl\gl.h" #include "[path-of-SGI-sdk]\include\gl\glu.h" //*/ //#include "afxtempl.h" #include "GLEnabledView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif #define MAX_LISTS 20 // used to identify a MCD video driver (partial OGL acceleration) #define INSTALLABLE_DRIVER_TYPE_MASK (PFD_GENERIC_ACCELERATED|PFD_GENERIC_FORMAT) ///////////////////////////////////////////////////////////////////////////// // Global Functions/variables // These functions are used by CGLTesselator class struct GarbListItem{ GLdouble *pvert; GarbListItem* next;}; GarbListItem* m_garbagelist=NULL; void AddGarbage(GLdouble * ptr) { ASSERT(ptr!=NULL); // allocate mem for new list item GarbListItem* temp=new GarbListItem; // store pointer temp->pvert=ptr; // add at head of list temp->next=m_garbagelist; m_garbagelist=temp; } void DeleteGarbage() { if(m_garbagelist!=NULL) { GarbListItem* punt=m_garbagelist; GarbListItem* temp=m_garbagelist; // scan the list while(punt!=NULL) { // delete vertex delete[] punt->pvert; punt=punt->next; // delete list item delete temp; temp=punt; }; m_garbagelist=NULL; }; } void CALLBACK BeginCallback(GLenum type) { // issue corresponding GL call glBegin(type); } void CALLBACK ErrorCallback(GLenum errorCode) { const GLubyte *estring; CString mexstr; // get the error descritption from OGL estring = gluErrorString(errorCode); // prepare and show a message box mexstr.Format("Tessellation/Quadric Error: %s\n", estring); AfxMessageBox(mexstr,MB_OK | MB_ICONEXCLAMATION); // replicate mex to debug trace TRACE("Tessellation Error: %s\n", estring); } void CALLBACK EndCallback() { // issue corresponding GL call glEnd(); } void CALLBACK VertexCallback(GLvoid *vertex) { // issue corresponding GL call (double is used to get max precision) glVertex3dv( (const double *)vertex ); } void CALLBACK CombineCallback(GLdouble coords[3], GLdouble *data[4], GLfloat weight[4], GLdouble **dataOut ) { // allocate memory for a new vertex GLdouble *vertex; vertex = new GLdouble[3]; // store reported vertex vertex[0] = coords[0]; vertex[1] = coords[1]; vertex[2] = coords[2]; // return vertex to OGL *dataOut = vertex; // add vertex pointer to garbage collection routines AddGarbage(vertex); } ///////////////////////////////////////////////////////////////////////////// // CGLEnabledView IMPLEMENT_DYNCREATE(CGLEnabledView, CView) CGLEnabledView::CGLEnabledView(): m_dAspectRatio(1.0), m_bInsideDispList(FALSE), m_bExternDispListCall(FALSE), m_bExternGLCall(FALSE) { // define a default cursor m_hMouseCursor=AfxGetApp()->LoadStandardCursor(IDC_SIZEALL); // set the disp list vector to all zeros for (int c=0;c<MAX_LISTS;c++) m_DispListVector[c]=0; } CGLEnabledView::~CGLEnabledView() { } BEGIN_MESSAGE_MAP(CGLEnabledView, CView) //{{AFX_MSG_MAP(CGLEnabledView) ON_WM_CREATE() ON_WM_DESTROY() ON_WM_ERASEBKGND() ON_WM_SIZE() ON_WM_SETCURSOR() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CGLEnabledView drawing void CGLEnabledView::OnDraw(CDC* pDC) { // prepare a semaphore static BOOL bBusy = FALSE; // use the semaphore to enter this critic section if(bBusy) return; bBusy = TRUE; // specify the target DeviceContext of the subsequent OGL calls wglMakeCurrent(m_pCDC->GetSafeHdc(), m_hRC); // clear background glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // call the virtual drawing procedure (to be overridden by user) OnDrawGL(); // execute OGL commands (flush the OGL graphical pipeline) glFinish(); // if double buffering is used it's time to swap the buffers SwapBuffers(m_pCDC->GetSafeHdc()); // turn the semaphore "green" bBusy = FALSE; // free the target DeviceContext (window) wglMakeCurrent(NULL,NULL); } void CGLEnabledView::OnDrawGL() { // draw carthesian axes glBegin(GL_LINES); // red x axis glColor3f(1.f,0.f,0.f); glVertex3f(0.0f,0.0f,0.0f); glVertex3f(1.0f,0.0f,0.0f); glVertex3f(1.0f,0.0f,0.0f); glVertex3f(0.9f,0.1f,0.0f); glVertex3f(1.0f,0.0f,0.0f); glVertex3f(0.9f,-0.1f,0.0f); // green y axis glColor3f(0.f,1.f,0.f); glVertex3f(0.0f,0.0f,0.0f); glVertex3f(0.0f,1.0f,0.0f); glVertex3f(0.0f,1.0f,0.0f); glVertex3f(0.1f,0.9f,0.0f); glVertex3f(0.0f,1.0f,0.0f); glVertex3f(-0.1f,0.9f,0.0f); // blue z axis glColor3f(0.f,0.f,1.f); glVertex3f(0.0f,0.0f,0.0f); glVertex3f(0.0f,0.0f,1.0f); glVertex3f(0.0f,0.0f,1.0f); glVertex3f(0.0f,0.1f,0.9f); glVertex3f(0.0f,0.0f,1.0f); glVertex3f(0.0f,-0.1f,0.9f); glEnd(); } ///////////////////////////////////////////////////////////////////////////// // CGLEnabledView diagnostics #ifdef _DEBUG void CGLEnabledView::AssertValid() const { CView::AssertValid(); } void CGLEnabledView::Dump(CDumpContext& dc) const { CView::Dump(dc); // dump some infos CString str; GetWindowText(str); afxDump<<"\nView Parameters\n\tClient Rectangle :"<<m_ClientRect<<"\n\tAspect Ratio :"<<m_dAspectRatio<<"\n"; afxDump<<"\nWindowTitle :"<<str<<"\n"; } #endif //_DEBUG ///////////////////////////////////////////////////////// // CGLEnabledView Constants // these are used to construct an equilibrated 256 color palette static unsigned char _threeto8[8] = { 0, 0111>>1, 0222>>1, 0333>>1, 0444>>1, 0555>>1, 0666>>1, 0377 }; static unsigned char _twoto8[4] = { 0, 0x55, 0xaa, 0xff }; static unsigned char _oneto8[2] = { 0, 255 }; static int defaultOverride[13] = { 0, 3, 24, 27, 64, 67, 88, 173, 181, 236, 247, 164, 91 }; // Wi