Opengl problem transformation/rotating.
 

I am trying to rotate the object by a input of key.
I dont know why the object is not rotating.

I used glRotatef(x,0,0,1); //where x is declared as float :

here is my code :

#include<GL/glut.h>







GLfloat x = 10;



void initGL()

{

    glEnable(GL_DEPTH);

        glDepthFunc(GL_LEQUAL);

        glClearDepth(1.0f);



}



void reshape(int width,int height)

{

        glViewport(0,0,width,height);

        glMatrixMode(GL_PROJECTION);

        glLoadIdentity();



        gluPerspective(45.0,(float)width/(float)height,5.0,250.0);

        glMatrixMode(GL_MODELVIEW);

        glLoadIdentity();

}



void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        glMatrixMode(GL_MODELVIEW);

        glLoadIdentity();

        

        glTranslatef(0,0,-10);

        glRotatef(x,0,1,0);

        glutSolidCube(1.0);



        glutSwapBuffers();

        glFlush();

        glutPostRedisplay();

        

}



void keyboard(unsigned char key, int x, int y)

{

        switch(key)

        {

        case 27: exit(0);break;

        case' ': x++;

        }



}



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

{

        switch(key)

        {

        case  GLUT_KEY_UP : x+=1;break;

        case  GLUT_KEY_DOWN:

        case  GLUT_KEY_LEFT:

        case  GLUT_KEY_RIGHT:;

        }



}



int main(int argc, char ** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGBA|GLUT_DEPTH);

    glutInitWindowSize(500,500);

    glutInitWindowPosition(300,200);

    glutCreateWindow("OPENGL");

    

        initGL();



    glutDisplayFunc(display);

        

        glutReshapeFunc(reshape);

        

        glutKeyboardFunc(keyboard);

        glutSpecialFunc(specialFunc);

  

        glutMainLoop();



        return 0;

}

Re: Opengl problem transformation/rotating.
 

Heh, that's the kind of error you don't see everyday.

Look at the arguments to specialFunc:

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

Function argument scope beats global scope.