heartview.cpp

C:Documents and SettingsAdministrator桌面VC++多媒体特效制作百例CHAR17Heart

// HeartView.cpp : implementation of the CHeartView class
//

#include "stdafx.h"
#include "Heart.h"

#include "HeartDoc.h"
#include "HeartView.h"

#include "gl\gl.h"
#include "gl\glu.h"
#include "gl\glaux.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define INREAL float

#define S_NUMPOINTS 13
#define S_ORDER     3   
#define S_NUMKNOTS  (S_NUMPOINTS + S_ORDER)
#define T_NUMPOINTS 3
#define T_ORDER     3 
#define T_NUMKNOTS  (T_NUMPOINTS + T_ORDER)
#define SQRT_TWO    1.41421356237309504880

typedef INREAL Point[4];


GLenum doubleBuffer;

GLenum expectedError;
GLint rotX = 40, rotY = 40;
INREAL sknots[S_NUMKNOTS] = {
    -1.0, -1.0, -1.0, 0.0, 1.0, 2.0, 3.0, 4.0,
    4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 9.0, 9.0
};
INREAL glutnots[T_NUMKNOTS] = {
    1.0, 1.0, 1.0, 2.0, 2.0, 2.0
};
Point ctlpoints[S_NUMPOINTS][T_NUMPOINTS] = {
    {
	{
	    4.0, 2.0, 2.0, 1.0
	},
	{
	    4.0, 1.6, 2.5, 1.0
	},
	{
	    4.0, 2.0, 3.0, 1.0
	}
    },
    {
	{
	    5.0, 4.0, 2.0, 1.0
	},
	{
	    5.0, 4.0, 2.5, 1.0
	},
	{
	    5.0, 4.0, 3.0, 1.0
	}
    },
    {
	{
	    6.0, 5.0, 2.0, 1.0
	},
	{
	    6.0, 5.0, 2.5, 1.0
	},
	{
	    6.0, 5.0, 3.0, 1.0
	}
    },
    {
	{
	    SQRT_TWO*6.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
	},
	{
	    SQRT_TWO*6.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
	},
	{
	    SQRT_TWO*6.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
	}  
    },
    {
	{
	    5.2, 6.7, 2.0, 1.0
	},
	{
	    5.2, 6.7, 2.5, 1.0
	},
	{
	    5.2, 6.7, 3.0, 1.0
	}
    },
    {
	{
	    SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
	},
	{
	    SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
	}, 
	{
	    SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
	}  
    }, 
    {
	{
	    4.0, 5.2, 2.0, 1.0
	},
	{
	    4.0, 4.6, 2.5, 1.0
	},
	{
	    4.0, 5.2, 3.0, 1.0
	}  
    },
    {
	{
	    SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
	},
	{
	    SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
	},
	{
	    SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
	}  
    },
    {
	{
	    2.8, 6.7, 2.0, 1.0
	},
	{
	    2.8, 6.7, 2.5, 1.0
	},
	{
	    2.8, 6.7, 3.0, 1.0
	}   
    },
    {
	{
	    SQRT_TWO*2.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
	},
	{
	    SQRT_TWO*2.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
	},
	{
	    SQRT_TWO*2.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
	}  
    },
    {
	{
	    2.0, 5.0, 2.0, 1.0
	},
	{
	    2.0, 5.0, 2.5, 1.0
	},
	{
	    2.0, 5.0, 3.0, 1.0
	} 
    },
    {
	{
	    3.0, 4.0, 2.0, 1.0
	},
	{
	    3.0, 4.0, 2.5, 1.0
	},
	{
	    3.0, 4.0, 3.0, 1.0
	} 
    },
    {
	{
	    4.0, 2.0, 2.0, 1.0
	},
	{
	    4.0, 1.6, 2.5, 1.0
	},
	{
	    4.0, 2.0, 3.0, 1.0
	}    
    }
};
GLUnurbsObj *theNurbs;

/////////////////////////////////////////////////////////////////////////////
// CHeartView

IMPLEMENT_DYNCREATE(CHeartView, CView)

BEGIN_MESSAGE_MAP(CHeartView, CView)
	//{{AFX_MSG_MAP(CHeartView)
	ON_WM_CREATE()
	ON_WM_DESTROY()
	ON_WM_ERASEBKGND()
	ON_WM_SIZE()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CHeartView construction/destruction

CHeartView::CHeartView()
{
	//add down
	m_pDC = NULL;

}

CHeartView::~CHeartView()
{
}

BOOL CHeartView::PreCreateWindow(CREATESTRUCT& cs)
{
	//add down
	cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
	//add up

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CHeartView drawing

void CHeartView::OnDraw(CDC* pDC)
{
	CHeartDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	//add down
	DrawScene();
	//add up
}

/////////////////////////////////////////////////////////////////////////////
// CHeartView printing

BOOL CHeartView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CHeartView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CHeartView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CHeartView diagnostics

#ifdef _DEBUG
void CHeartView::AssertValid() const
{
	CView::AssertValid();
}

void CHeartView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CHeartDoc* CHeartView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CHeartDoc)));
	return (CHeartDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CHeartView message handlers

int CHeartView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	//add down
	Init(); //初始化OpenGL
	//add up
	
	return 0;
}

void CHeartView::OnDestroy() 
{
	//add down
	HGLRC   hrc;

	hrc = ::wglGetCurrentContext();

	::wglMakeCurrent(NULL,  NULL);

	if (hrc)
		::wglDeleteContext(hrc);

	if (m_pDC)
		delete m_pDC;
	//add up

	CView::OnDestroy();
}

BOOL CHeartView::OnEraseBkgnd(CDC* pDC) 
{
	return TRUE;
}

void CHeartView::OnSize(UINT nType, int cx, int cy) 
{
	CView::OnSize(nType, cx, cy);
	
    glViewport(0, 0, cx, cy);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-2.0, 2.0, -2.0, 2.0, 0.8, 10.0);
    gluLookAt(7.0, 4.5, 4.0, 4.5, 4.5, 2.5, 6.0, -3.0, 2.0);
    glMatrixMode(GL_MODELVIEW);
	
}

//add down
void CHeartView::Init()
{
	PIXELFORMATDESCRIPTOR pfd;
	int         n;
	HGLRC       hrc;

	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);

	hrc = wglCreateContext(m_pDC->GetSafeHdc());
	wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);

    theNurbs = gluNewNurbsRenderer();
//    gluNurbsCallback(theNurbs, GLU_ERROR, ErrorCallback);

    gluNurbsProperty(theNurbs, GLU_SAMPLING_TOLERANCE, 15.0);
    gluNurbsProperty(theNurbs, GLU_DISPLAY_MODE, GLU_OUTLINE_PATCH);

    expectedError = GLU_INVALID_ENUM;
    gluNurbsProperty(theNurbs, ~0, 15.0);
    expectedError = GLU_NURBS_ERROR13;
    gluEndSurface(theNurbs);
    expectedError = 0;

    glColor3f(1.0, 1.0, 1.0);
}

BOOL CHeartView::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;
}

void CHeartView::DrawScene(void)
{
    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

    glTranslatef(4.0, 4.5, 2.5);
    glRotatef(rotY, 1, 0, 0);
    glRotatef(rotX, 0, 1, 0);
    glTranslatef(-4.0, -4.5, -2.5);

    gluBeginSurface(theNurbs);
    gluNurbsSurface(theNurbs, S_NUMKNOTS, sknots, T_NUMKNOTS, glutnots,
		    4*T_NUMPOINTS, 4, &ctlpoints[0][0][0], S_ORDER,
		    T_ORDER, GL_MAP2_VERTEX_4);
    gluEndSurface(theNurbs);

    glPopMatrix();
 
	glFinish();
	SwapBuffers(wglGetCurrentDC());
}