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- // cubeview.cpp : implementation of the CCubeView class
- //
- // This is a part of the Microsoft Foundation Classes C++ library.
- // Copyright (C) 1992-1998 Microsoft Corporation
- // All rights reserved.
- //
- // This source code is only intended as a supplement to the
- // Microsoft Foundation Classes Reference and related
- // electronic documentation provided with the library.
- // See these sources for detailed information regarding the
- // Microsoft Foundation Classes product.
-
- #include "stdafx.h"
- #include "cube.h"
-
- #include "cubedoc.h"
- #include "cubeview.h"
-
- #include "gl\gl.h"
- #include "gl\glu.h"
-
- #ifdef _DEBUG
- #undef THIS_FILE
- static char BASED_CODE THIS_FILE[] = __FILE__;
- #endif
-
- unsigned char threeto8[8] =
- {
- 0, 0111>>1, 0222>>1, 0333>>1, 0444>>1, 0555>>1, 0666>>1, 0377
- };
-
- unsigned char twoto8[4] =
- {
- 0, 0x55, 0xaa, 0xff
- };
-
- unsigned char oneto8[2] =
- {
- 0, 255
- };
-
- static int defaultOverride[13] =
- {
- 0, 3, 24, 27, 64, 67, 88, 173, 181, 236, 247, 164, 91
- };
-
- static PALETTEENTRY defaultPalEntry[20] =
- {
- { 0, 0, 0, 0 },
- { 0x80,0, 0, 0 },
- { 0, 0x80,0, 0 },
- { 0x80,0x80,0, 0 },
- { 0, 0, 0x80, 0 },
- { 0x80,0, 0x80, 0 },
- { 0, 0x80,0x80, 0 },
- { 0xC0,0xC0,0xC0, 0 },
-
- { 192, 220, 192, 0 },
- { 166, 202, 240, 0 },
- { 255, 251, 240, 0 },
- { 160, 160, 164, 0 },
-
- { 0x80,0x80,0x80, 0 },
- { 0xFF,0, 0, 0 },
- { 0, 0xFF,0, 0 },
- { 0xFF,0xFF,0, 0 },
- { 0, 0, 0xFF, 0 },
- { 0xFF,0, 0xFF, 0 },
- { 0, 0xFF,0xFF, 0 },
- { 0xFF,0xFF,0xFF, 0 }
- };
-
- /////////////////////////////////////////////////////////////////////////////
- // CCubeView
-
- IMPLEMENT_DYNCREATE(CCubeView, CView)
-
- BEGIN_MESSAGE_MAP(CCubeView, CView)
- //{{AFX_MSG_MAP(CCubeView)
- ON_COMMAND(ID_FILE_PLAY, OnFilePlay)
- ON_UPDATE_COMMAND_UI(ID_FILE_PLAY, OnUpdateFilePlay)
- ON_WM_CREATE()
- ON_WM_DESTROY()
- ON_WM_SIZE()
- ON_WM_TIMER()
- ON_WM_ERASEBKGND()
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
-
- /////////////////////////////////////////////////////////////////////////////
- // CCubeView construction/destruction
-
- CCubeView::CCubeView()
- {
- m_pDC = NULL;
- m_pOldPalette = NULL;
- m_play = FALSE;
- }
-
- CCubeView::~CCubeView()
- {
- }
-
- /////////////////////////////////////////////////////////////////////////////
- // CCubeView drawing
-
- void CCubeView::OnDraw(CDC* pDC)
- {
- CCubeDoc* pDoc = GetDocument();
- ASSERT_VALID(pDoc);
-
- DrawScene();
- }
-
- /////////////////////////////////////////////////////////////////////////////
- // CCubeView diagnostics
-
- #ifdef _DEBUG
- void CCubeView::AssertValid() const
- {
- CView::AssertValid();
- }
-
- void CCubeView::Dump(CDumpContext& dc) const
- {
- CView::Dump(dc);
- }
-
- CCubeDoc* CCubeView::GetDocument() // non-debug version is inline
- {
- return STATIC_DOWNCAST(CCubeDoc, m_pDocument);
- }
- #endif //_DEBUG
-
- /////////////////////////////////////////////////////////////////////////////
- // CCubeView message handlers
-
- void CCubeView::OnFilePlay()
- {
- m_play = m_play ? FALSE : TRUE;
- if (m_play)
- SetTimer(1, 15, NULL);
- else
- KillTimer(1);
- }
-
- void CCubeView::OnUpdateFilePlay(CCmdUI* pCmdUI)
- {
- pCmdUI->SetCheck(m_play);
- }
-
- BOOL CCubeView::PreCreateWindow(CREATESTRUCT& cs)
- {
- // An OpenGL window must be created with the following flags and must not
- // include CS_PARENTDC for the class style. Refer to SetPixelFormat
- // documentation in the "Comments" section for further information.
- cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
-
- return CView::PreCreateWindow(cs);
- }
-
- int CCubeView::OnCreate(LPCREATESTRUCT lpCreateStruct)
- {
- if (CView::OnCreate(lpCreateStruct) == -1)
- return -1;
-
- Init(); // initialize OpenGL
-
- return 0;
- }
-
- void CCubeView::OnDestroy()
- {
- HGLRC hrc;
-
- KillTimer(1);
-
- hrc = ::wglGetCurrentContext();
-
- ::wglMakeCurrent(NULL, NULL);
-
- if (hrc)
- ::wglDeleteContext(hrc);
-
- if (m_pOldPalette)
- m_pDC->SelectPalette(m_pOldPalette, FALSE);
-
- if (m_pDC)
- delete m_pDC;
-
- CView::OnDestroy();
- }
-
- void CCubeView::OnSize(UINT nType, int cx, int cy)
- {
- CView::OnSize(nType, cx, cy);
-
- if(cy > 0)
- {
- glViewport(0, 0, cx, cy);
-
- if((m_oldRect.right > cx) || (m_oldRect.bottom > cy))
- RedrawWindow();
-
- m_oldRect.right = cx;
- m_oldRect.bottom = cy;
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(45.0f, (GLdouble)cx/cy, 3.0f, 7.0f);
- glMatrixMode(GL_MODELVIEW);
- }
- }
-
- void CCubeView::OnTimer(UINT nIDEvent)
- {
- DrawScene();
-
- CView::OnTimer(nIDEvent);
-
- // Eat spurious WM_TIMER messages
- MSG msg;
- while(::PeekMessage(&msg, m_hWnd, WM_TIMER, WM_TIMER, PM_REMOVE));
- }
-
- /////////////////////////////////////////////////////////////////////////////
- // GL helper functions
-
- void CCubeView::Init()
- {
- PIXELFORMATDESCRIPTOR pfd;
- int n;
- HGLRC hrc;
- GLfloat fMaxObjSize, fAspect;
- GLfloat fNearPlane, fFarPlane;
-
- m_pDC = new CClientDC(this);
-
- ASSERT(m_pDC != NULL);
-
- if (!bSetupPixelFormat())
- return;
-
- n = ::GetPixelFormat(m_pDC->GetSafeHdc());
- ::DescribePixelFormat(m_pDC->GetSafeHdc(), n, sizeof(pfd), &pfd);
-
- CreateRGBPalette();
-
- hrc = wglCreateContext(m_pDC->GetSafeHdc());
- wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);
-
- GetClientRect(&m_oldRect);
- glClearDepth(1.0f);
- glEnable(GL_DEPTH_TEST);
-
- if (m_oldRect.bottom)
- fAspect = (GLfloat)m_oldRect.right/m_oldRect.bottom;
- else // don't divide by zero, not that we should ever run into that...
- fAspect = 1.0f;
- fNearPlane = 3.0f;
- fFarPlane = 7.0f;
- fMaxObjSize = 3.0f;
- m_fRadius = fNearPlane + fMaxObjSize / 2.0f;
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(45.0f, fAspect, fNearPlane, fFarPlane);
- glMatrixMode(GL_MODELVIEW);
- }
-
- BOOL CCubeView::bSetupPixelFormat()
- {
- static PIXELFORMATDESCRIPTOR pfd =
- {
- sizeof(PIXELFORMATDESCRIPTOR), // size of this pfd
- 1, // version number
- PFD_DRAW_TO_WINDOW | // support window
- PFD_SUPPORT_OPENGL | // support OpenGL
- PFD_DOUBLEBUFFER, // double buffered
- PFD_TYPE_RGBA, // RGBA type
- 24, // 24-bit color depth
- 0, 0, 0, 0, 0, 0, // color bits ignored
- 0, // no alpha buffer
- 0, // shift bit ignored
- 0, // no accumulation buffer
- 0, 0, 0, 0, // accum bits ignored
- 32, // 32-bit z-buffer
- 0, // no stencil buffer
- 0, // no auxiliary buffer
- PFD_MAIN_PLANE, // main layer
- 0, // reserved
- 0, 0, 0 // layer masks ignored
- };
- int pixelformat;
-
- if ( (pixelformat = ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd)) == 0 )
- {
- MessageBox("ChoosePixelFormat failed");
- return FALSE;
- }
-
- if (SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd) == FALSE)
- {
- MessageBox("SetPixelFormat failed");
- return FALSE;
- }
-
- return TRUE;
- }
-
- unsigned char CCubeView::ComponentFromIndex(int i, UINT nbits, UINT shift)
- {
- unsigned char val;
-
- val = (unsigned char) (i >> shift);
- switch (nbits)
- {
-
- case 1:
- val &= 0x1;
- return oneto8[val];
- case 2:
- val &= 0x3;
- return twoto8[val];
- case 3:
- val &= 0x7;
- return threeto8[val];
-
- default:
- return 0;
- }
- }
-
-
- void CCubeView::CreateRGBPalette()
- {
- PIXELFORMATDESCRIPTOR pfd;
- LOGPALETTE *pPal;
- int n, i;
-
- n = ::GetPixelFormat(m_pDC->GetSafeHdc());
- ::DescribePixelFormat(m_pDC->GetSafeHdc(), n, sizeof(pfd), &pfd);
-
- if (pfd.dwFlags & PFD_NEED_PALETTE)
- {
- n = 1 << pfd.cColorBits;
- pPal = (PLOGPALETTE) new char[sizeof(LOGPALETTE) + n * sizeof(PALETTEENTRY)];
-
- ASSERT(pPal != NULL);
-
- pPal->palVersion = 0x300;
- pPal->palNumEntries = n;
- for (i=0; i<n; i++)
- {
- pPal->palPalEntry[i].peRed =
- ComponentFromIndex(i, pfd.cRedBits, pfd.cRedShift);
- pPal->palPalEntry[i].peGreen =
- ComponentFromIndex(i, pfd.cGreenBits, pfd.cGreenShift);
- pPal->palPalEntry[i].peBlue =
- ComponentFromIndex(i, pfd.cBlueBits, pfd.cBlueShift);
- pPal->palPalEntry[i].peFlags = 0;
- }
-
- /* fix up the palette to include the default GDI palette */
- if ((pfd.cColorBits == 8) &&
- (pfd.cRedBits == 3) && (pfd.cRedShift == 0) &&
- (pfd.cGreenBits == 3) && (pfd.cGreenShift == 3) &&
- (pfd.cBlueBits == 2) && (pfd.cBlueShift == 6)
- )
- {
- for (i = 1 ; i <= 12 ; i++)
- pPal->palPalEntry[defaultOverride[i]] = defaultPalEntry[i];
- }
-
- m_cPalette.CreatePalette(pPal);
- delete pPal;
-
- m_pOldPalette = m_pDC->SelectPalette(&m_cPalette, FALSE);
- m_pDC->RealizePalette();
- }
- }
-
- void CCubeView::DrawScene(void)
- {
- static BOOL bBusy = FALSE;
- static GLfloat wAngleY = 10.0f;
- static GLfloat wAngleX = 1.0f;
- static GLfloat wAngleZ = 5.0f;
-
- if(bBusy)
- return;
- bBusy = TRUE;
-
- glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix();
-
- glTranslatef(0.0f, 0.0f, -m_fRadius);
- glRotatef(wAngleX, 1.0f, 0.0f, 0.0f);
- glRotatef(wAngleY, 0.0f, 1.0f, 0.0f);
- glRotatef(wAngleZ, 0.0f, 0.0f, 1.0f);
-
- wAngleX += 1.0f;
- wAngleY += 10.0f;
- wAngleZ += 5.0f;
-
-
- glBegin(GL_QUAD_STRIP);
- glColor3f(1.0f, 0.0f, 1.0f);
- glVertex3f(-0.5f, 0.5f, 0.5f);
-
- glColor3f(1.0f, 0.0f, 0.0f);
- glVertex3f(-0.5f, -0.5f, 0.5f);
-
- glColor3f(1.0f, 1.0f, 1.0f);
- glVertex3f(0.5f, 0.5f, 0.5f);
-
- glColor3f(1.0f, 1.0f, 0.0f);
- glVertex3f(0.5f, -0.5f, 0.5f);
-
- glColor3f(0.0f, 1.0f, 1.0f);
- glVertex3f(0.5f, 0.5f, -0.5f);
-
- glColor3f(0.0f, 1.0f, 0.0f);
- glVertex3f(0.5f, -0.5f, -0.5f);
-
- glColor3f(0.0f, 0.0f, 1.0f);
- glVertex3f(-0.5f, 0.5f, -0.5f);
-
- glColor3f(0.0f, 0.0f, 0.0f);
- glVertex3f(-0.5f, -0.5f, -0.5f);
-
- glColor3f(1.0f, 0.0f, 1.0f);
- glVertex3f(-0.5f, 0.5f, 0.5f);
-
- glColor3f(1.0f, 0.0f, 0.0f);
- glVertex3f(-0.5f, -0.5f, 0.5f);
-
- glEnd();
-
- glBegin(GL_QUADS);
- glColor3f(1.0f, 0.0f, 1.0f);
- glVertex3f(-0.5f, 0.5f, 0.5f);
-
- glColor3f(1.0f, 1.0f, 1.0f);
- glVertex3f(0.5f, 0.5f, 0.5f);
-
- glColor3f(0.0f, 1.0f, 1.0f);
- glVertex3f(0.5f, 0.5f, -0.5f);
-
- glColor3f(0.0f, 0.0f, 1.0f);
- glVertex3f(-0.5f, 0.5f, -0.5f);
- glEnd();
-
- glBegin(GL_QUADS);
- glColor3f(1.0f, 0.0f, 0.0f);
- glVertex3f(-0.5f, -0.5f, 0.5f);
-
- glColor3f(1.0f, 1.0f, 0.0f);
- glVertex3f(0.5f, -0.5f, 0.5f);
-
- glColor3f(0.0f, 1.0f, 0.0f);
- glVertex3f(0.5f, -0.5f, -0.5f);
-
- glColor3f(0.0f, 0.0f, 0.0f);
- glVertex3f(-0.5f, -0.5f, -0.5f);
- glEnd();
-
- glPopMatrix();
-
- glFinish();
- SwapBuffers(wglGetCurrentDC());
-
- bBusy = FALSE;
- }
-
- BOOL CCubeView::OnEraseBkgnd(CDC* pDC)
- {
- return TRUE;
- }
-