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Помогите пожалуйста!В прилагаемом файле MFCView.cpp в функции display() есть код некоего графического объекта,напоминающего элипс и имееющего профильный вид.Нужно расположить "камеру" для просмотра объекта в изометрии.Заранее благодарен Добавлено @ 15:39 | Код |
#include "stdafx.h"
#include "MFC.h"
#include <iostream.h>
#include "MFCDoc.h"
#include "MFCView.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CMFCView
IMPLEMENT_DYNCREATE(CMFCView, CView)
BEGIN_MESSAGE_MAP(CMFCView, CView)
//{{AFX_MSG_MAP(CMFCView)
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_SIZE()
ON_WM_KEYDOWN()
ON_WM_MOUSEMOVE()
ON_WM_MOUSEWHEEL()
ON_WM_HSCROLL()
//}}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()
/////////////////////////////////////////////////////////////////////////////
// CMFCView construction/destruction
CMFCView::CMFCView()
{
// TODO: add construction code here
}
CMFCView::~CMFCView()
{
}
BOOL CMFCView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
cs.style |= (WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
return CView::PreCreateWindow(cs);
}
#define dx 1
#define M_PI 3.14159265358979323846
#define dQ 10*M_PI/180
/////////////////////////////////////////////////////////////////////////////
// CMFCView drawing
int width=800;
int height=100;
void CMFCView::display()
{
glPushMatrix();
glClearColor(0.3,0.3,1,0);
glMatrixMode( GL_MODELVIEW);
glViewport(40,100,width,height);
glMatrixMode( GL_PROJECTION);
glOrtho(-5,110, -5,5, -5,5);
gluLookAt( 0,0,1, 0,0,0, 0,1,0 );
static double t=0;
double x, Q;
double Rn=1;
//Зададим коэффициент к:
double K=1.095;
//Зададим коэффициент сопротивления:
double Cx0=0.82;
//Зададим число кавитации:
double SIG= 0.04;
//Определим коэффициенты:
double Rk=Rn*sqrt(Cx0*(1+SIG)/(K*SIG));
double LAM=Rn/Rk;
//Посчитаем длинну каверны:
double Lk=Rn*(1.92-3*SIG)/SIG;
//Посчитаем конечное значение по оси Х:
double xn=2*Lk;
/////////////////////////////////////////
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
/////////////////////////////// ОСИ КООРДИНАТ:
////X
glPushMatrix();
glPointSize(7);
glBegin(GL_POINTS);
for(int i=0;i<xn;i=i+10)
glVertex3d(i,0,0);
glEnd();
glLineWidth(5);
glBegin(GL_LINE_STRIP);
glVertex3d(0,0,0);
glVertex3d(xn,0,0);
glEnd();
/////Y
glPointSize(7);
glBegin(GL_POINTS);
for(int j=0;j<5;j=j+1)
glVertex3d(0,j,0);
glEnd();
glLineWidth(5);
glBegin(GL_LINE_STRIP);
glVertex3d(0,0,0);
glVertex3d(0,5,0);
glEnd();
/////Z
glPointSize(7);
glBegin(GL_POINTS);
for(int k=0;k<5;k=k+1)
glVertex3d(0,0,k);
glEnd();
glLineWidth(5);
glBegin(GL_LINE_STRIP);
glVertex3d(0,0,0);
glVertex3d(0,0,5);
glEnd();
for(x=0;x<xn;x+=dx)
for(Q=0;Q<180/M_PI;Q+=dQ)
{
double Xotn1=x/Lk;
double Xotn2=(x+dx)/Lk;
double R1=Rk*sqrt(1-(1-LAM*LAM)*(1-Xotn1)*(1-Xotn1));
double R2=Rk*sqrt(1-(1-LAM*LAM)*(1-Xotn2)*(1-Xotn2));
double z1 = R1*sin(Q+t);
double y1 = R1*cos(Q+t);
double x1 = x;
double z2 = R1*sin(Q+dQ+t);
double y2 = R1*cos(Q+t);
double x2 = x;
double z3 = R2*sin(Q+t);
double y3 = R2*cos(Q+t);
double x3 = x+dx;
double z4 = R2*sin(Q+dQ+t);
double y4 = R2*cos(Q+dQ+t);
double x4 = x+dx;
glLineWidth(1);
glBegin(GL_LINE_STRIP);
glVertex3d(x1,y1,z1);
glVertex3d(x2,y2,z2);
glVertex3d(x3,y3,z3);
glVertex3d(x4,y4,z4);
glEnd();
}
glPopMatrix();
//t+=0.01;
glLoadIdentity();
glPopMatrix();
SwapBuffers(wglGetCurrentDC());
}
void CMFCView::OnDraw(CDC* pDC)
{
display();
}
/////////////////////////////////////////////////////////////////////////////
// CMFCView printing
BOOL CMFCView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CMFCView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CMFCView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CMFCView diagnostics
#ifdef _DEBUG
void CMFCView::AssertValid() const
{
CView::AssertValid();
}
void CMFCView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CMFCDoc* CMFCView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMFCDoc)));
return (CMFCDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CMFCView message handlers
int CMFCView::SetWindowPixelFormat(HDC hDC)
{
int m_GLPixelIndex;
PIXELFORMATDESCRIPTOR pfd;
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cRedBits = 8;
pfd.cRedShift = 16;
pfd.cGreenBits = 8;
pfd.cGreenShift = 8;
pfd.cBlueBits = 8;
pfd.cBlueShift = 0;
pfd.cAlphaBits = 0;
pfd.cAlphaShift = 0;
pfd.cAccumBits = 64;
pfd.cAccumRedBits = 16;
pfd.cAccumGreenBits = 16;
pfd.cAccumBlueBits = 16;
pfd.cAccumAlphaBits = 0;
pfd.cDepthBits = 32;
pfd.cStencilBits = 8;
pfd.cAuxBuffers = 0;
pfd.iLayerType = PFD_MAIN_PLANE;
pfd.bReserved = 0;
pfd.dwLayerMask = 0;
pfd.dwVisibleMask = 0;
pfd.dwDamageMask = 0;
m_GLPixelIndex = ChoosePixelFormat( hDC, &pfd);
if(m_GLPixelIndex==0) // Let's choose a default index.
{
m_GLPixelIndex = 1;
if(DescribePixelFormat(hDC,m_GLPixelIndex,sizeof(PIXELFORMATDESCRIPTOR),&pfd)==0)
return 0;
}
if (SetPixelFormat( hDC, m_GLPixelIndex, &pfd)==FALSE)
return 0;
return 1;
}
int CMFCView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
pdc = new CClientDC(this);
if(SetWindowPixelFormat(pdc->m_hDC)==FALSE)
return -1;
hGLRC = wglCreateContext(pdc->m_hDC);
if(hGLRC == NULL)
return -1;
if(wglMakeCurrent(pdc->m_hDC, hGLRC)==FALSE)
return -1;
glEnable(GL_ALPHA_TEST);
glEnable(GL_DEPTH_TEST);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
float pos[4] = {3,3,3,1};
float dir[3] = {-1,-1,-1};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glLightfv(GL_LIGHT0, GL_SPOT_DIRECTION, dir);
return 0;
}
void CMFCView::OnDestroy()
{
if(wglGetCurrentContext()!=NULL)
wglMakeCurrent(NULL, NULL) ;
if(hGLRC!=NULL)
{
wglDeleteContext(hGLRC);
hGLRC = NULL;
}
delete pdc;
CView::OnDestroy();
}
void CMFCView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
}
void CMFCView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default
CView::OnKeyDown(nChar, nRepCnt, nFlags);
}
void CMFCView::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
CView::OnMouseMove(nFlags, point);
}
BOOL CMFCView::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
// TODO: Add your message handler code here and/or call default
return CView::OnMouseWheel(nFlags, zDelta, pt);
}
void CMFCView::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
// TODO: Add your message handler code here and/or call default
CView::OnHScroll(nSBCode, nPos, pScrollBar);
}
BOOL CMFCView::OnScroll(UINT nScrollCode, UINT nPos, BOOL bDoScroll)
{
// TODO: Add your specialized code here and/or call the base class
return CView::OnScroll(nScrollCode, nPos, bDoScroll);
}
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Помогите разобраться с glulookat(), трабл 
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Дата 15.4.2006, 06:28 (
