آموزش OpenGL

[pswin.pooya]

اینم کد همون دو تا دایره با تنظیم سرعت :

#include <GL/glut.h>  





float g_fSpeed;

float g_fCur_Angle;



void special( int key, int x, int y)

{

    switch(key)

    {

    case GLUT_KEY_UP:

        g_fSpeed+=0.1f;

        break;

    case GLUT_KEY_DOWN:

        g_fSpeed-=0.1f;

        break;

    }

}



// 

void GL_Display(void)

 {

     g_fCur_Angle += g_fSpeed;

    // pak kardane safhe

    glClear(GL_COLOR_BUFFER_BIT);  

    glColor3f(0.0, 0.0, 0.0);   



    GLUquadricObj *circle = gluNewQuadric (); 

    gluQuadricDrawStyle (circle, GLU_SILHOUETTE); 

    gluDisk (circle,0,0.8,5000,1);                

    gluDeleteQuadric(circle);               



    // daire aval

    glPushMatrix(); 

        glPointSize(5.0); 

        glRotatef(g_fCur_Angle,0,0,0.1);                             

        glColor3f(0.0, 0.0, 1.0);                             

        glBegin(GL_POINTS);                              

            glVertex2f(0.25, 0.75);                        

        glEnd();                                       

    glPopMatrix(); 



    // daire dovom



    glPushMatrix(); 

        glPointSize(10.0); 

        glRotatef(-g_fCur_Angle,0,0,0.1);                             

        glColor3f(1.0, 0.0, 1.0);                             

        glBegin(GL_POINTS);                              

            glVertex2f(0.25, 0.75);                        

        glEnd();                                       

    glPopMatrix(); 



    glutSwapBuffers();                                

 }



// initialize function

void GL_Init(void)

{

    // pak kardane safhe ba range sefid

    glClearColor(1.0,1.0,1.0,1.0);

    // tanzim sorat harkat be 1

    g_fSpeed = 1.0f;

    g_fCur_Angle = 0.0f;

    // narma kardane (daire kardan) nogat

    glEnable(GL_POINT_SMOOTH);



}



int main(int argc, char **argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA);

    glutInitWindowPosition(500,500);

    glutInitWindowSize(400,400);

    glutCreateWindow("Circle");

    GL_Init(); // initializing OpenGL

    glutDisplayFunc(GL_Display);

    glutIdleFunc(GL_Display);

    glutSpecialFunc(special);

    glutMainLoop();

  return 0;

}

فکر کنم دنبال این بودین بازم اگر چیزی رو جا انداخته باشم بگین.