void GeomGlut::initGraphicsWin( unsigned int pixelWinX, unsigned int pixelWinY, double _xMin, double _xMax, double _yMin, double _yMax ,long double (*func)(long double))
{
f = func;
if(_xMax-_xMin<=0)
return;
winFuncPixels.x = pixelWinX;
winFuncPixels.y = pixelWinY;
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA);
glutInitWindowPosition(0, 0);
glutInitWindowSize(winFuncPixels.x, winFuncPixels.y);
// at the begining, the function win pixel and the actual win pixel are identical:
graphWin.setWinPixels( winFuncPixels.x, winFuncPixels.y );
minWin.x = _xMin;
minWin.y = _yMin;
maxWin.x = _xMax;
maxWin.y = _yMax;
glutCreateWindow("Algorithmes numériques: labo#4 - Part 1");
// Initialiser la couleur du fond (blanc)
glClearColor(0.9f, 0.9f, 0.9f, 1.0f);
glutReshapeFunc( Reshape );
glutDisplayFunc( Display );
glutMainLoop();
}
void Reshape(int w, int h)
{
if (h == 0) h = 1;
if (w == 0) w = 1;
glViewport(0, 0, w, h);
graphWin.setWinPixels( w, h );
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float xRatio = static_cast<float>(w)/static_cast<float>(graphWin.xWinFunc());
float yRatio = static_cast<float>(h)/static_cast<float>(graphWin.yWinFunc());
// Volume de clipping : (left, right, bottom, top, near, far)
glOrtho(graphWin.xMin()*xRatio, graphWin.xMax()*xRatio, graphWin.yMin()*yRatio, graphWin.yMax()*yRatio, -2.0f, 2.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void GeomGlut::initGraphicsWin( unsigned int pixelWinX, double xMin, double xMax, double yMin, double yMax )
{
if(xMax-xMin<=0)
{
cout << "xMax-xMin cannot be < or = to 0" << endl << endl;
return;
}
winFuncPixels.x = pixelWinX;
winFuncPixels.y = (unsigned int)((yMax-yMin) * (double)winFuncPixels.x/(xMax-xMin));
int argc = 1;
char *argv[1] = {(char*)"Glut"};
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_SINGLE | GLUT_RGBA | GLUT_MULTISAMPLE);
glutInitWindowPosition(0, 0);
cout << "System coordinate min(" << xMin << ", " << yMin << ") max(" << xMax << ", " << yMax << " give for " << winFuncPixels.x << " pixels in X, a Y pixel number of " << winFuncPixels.y << endl << endl;
cout << "pixelWin(" << winFuncPixels.x << ", " << winFuncPixels.y << ")...";
glutInitWindowSize(winFuncPixels.x, winFuncPixels.y);
cout << " success!" << endl << endl;
// at the begining, the function win pixel and the actual win pixel are identical:
graphWin.setWinPixels( winFuncPixels.x, winFuncPixels.y );
minWin.x = xMin;
minWin.y = yMin;
maxWin.x = xMax;
maxWin.y = yMax;
glutCreateWindow("Algorithmes numeriques: labo#6");
// Initialiser la couleur du fond (blanc)
glClearColor(0.9f, 0.9f, 0.9f, 1.0f);
glutMouseFunc( Click );
glutReshapeFunc( Reshape );
glutDisplayFunc( Display );
glutMainLoop();
}
