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| #include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
/* Fonctions Prototypes */
GLvoid Initialize( char * );
GLvoid DrawScene( GLvoid );
GLvoid DrawGrid(GLfloat * , GLfloat *);
GLvoid DrawAxes(GLvoid);
GLvoid DrawCube(GLvoid);
GLvoid Resize( GLsizei , GLsizei );
/* Variables globales definissant les couleurs
------------------------------------------- */
GLfloat White[]={1.,1.,1.};
GLfloat Black[]={0.,0.,0.};
GLfloat Red[]={1.,0.,0.};
GLfloat Green[]={0.,1.,0.};
GLfloat Blue[]={0.,0.,1.};
GLfloat Magenta[]={1.,0.,1.};
GLfloat Cyan[]={0.,1.,1.};
GLfloat Yellow[]={1.,1.,0.};
/* Variables globales definissant les dimensions
--------------------------------------------- */
GLfloat Ratio;
GLfloat near = 1.;
GLfloat far = 30.;
GLfloat fovy = 70.;
/* Programme principal
------------------- */
int
main(int argc , char ** argv)
{
/* code executable :
--------------- */
glutInit(&argc,argv);
Initialize(argv[0]);
glutDisplayFunc(DrawScene);
glutReshapeFunc( Resize );
glutMainLoop();
return 0;
}
GLvoid
Initialize( char * Titre )
{
GLvoid DefineWindow( char *) ;
glutInitDisplayMode( GLUT_RGBA|GLUT_DEPTH );
/* Définition de la fenêtre
------------------------ */
DefineWindow( Titre) ;
/* Definir le monde des coordonnees
------------------------------- */
glPointSize(4);
glLineWidth(2.5);
}
GLvoid
Resize(GLsizei WindowWidth , GLsizei WindowHeight )
{
glViewport( 0, 0,WindowWidth , WindowHeight) ;
Ratio = (GLfloat) WindowWidth / WindowHeight;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(fovy, Ratio,near,far);
glMatrixMode(GL_MODELVIEW);
}
GLvoid DefineWindow( char * Titre)
{
GLsizei ScreenWidth,ScreenHeight;
/* Largeur et hauteur de l'écran
-------------------------------- */
/* Largeur et hauteur de l'écran
---------------------------------- */
ScreenWidth = glutGet(GLUT_SCREEN_WIDTH) ;
ScreenHeight = glutGet(GLUT_SCREEN_HEIGHT);
/* Definition de la fenetre
------------------------ */
glutInitWindowPosition(ScreenWidth/4,ScreenHeight/4);
glutInitWindowSize(ScreenWidth/2,ScreenHeight/2);
glutCreateWindow(Titre);
/* Definition de la couleur du fond de la fenetre
----------------------------------------------- */
glClearColor(0.,0.,1.,1.);
}
GLvoid
DrawScene( GLvoid )
{
/* Effacement de la fenetre pour un nouvel affichage
------------------------------------------------- */
glClear( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glPushMatrix();
glTranslatef(0.0,0.0,-3.) ;
glRotatef(-45.,1.,0.,0);
/* le sol*/
glBegin(GL_POLYGON);
glColor3ub(255,255,255);
glVertex3d(-15,0,-3);
glVertex3d(15,0,-3);
glVertex3d(15,4,-30);
glVertex3d(-15,4,-30);
glPopMatrix();
glFlush();
} |
