Moving objects without using pushMatrix or popMatrix

OpenGL OpenGL: Basic Coding
1

Hello, i would like some help please, im making a program where i got 2 objects (a solidSphere and wireTorus), the program has specified letters (u = move up, d = move down, l = move left, k = move right) where only 1 figure its suppose to move (wich it doesnt happen, the 2 objects move), i require to move only 1 object without using the methods “pushMatrix” and “popMatrix”, any ideas? Thank you in advance. Here is my code:

#include <GL/glut.h>
#include <stdio.h>
void display(void)
{

glClearColor(1.0, 1.0, 1.0, 0.0);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glColor3f(1.0,0.0,1.0) ;
glutSolidSphere(.30,20,20) ;

glColor3f(0.0,0.0,1.0);
glutWireTorus(0.25,0.75, 28, 28);

glutSwapBuffers();
}

void reshape(int width, int height)
{

glViewport(0, 0, width, height);

glMatrixMode(GL_PROJECTION); //afecta la perspectiva de la proyección

glLoadIdentity();

gluPerspective(60.0, (GLfloat)height / (GLfloat)width, 1.0, 128.0);

glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

gluLookAt(0.0, 1.0, 3.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
}

void keyboard(char opcion) {

switch (opcion)
{

case ‘u’:

  glTranslatef(0.0f,0.1f,0.0f);    
  break;

case ‘d’:
glTranslatef(0.0f,-0.1f,0.0f);
break;

case ‘l’:
glTranslatef(-0.1f,0.0f,0.0f);
break;

case ‘k’:
glTranslatef(0.1f,0.0f,0.0f);
break;

case ‘f’:
if (glIsEnabled(GL_CULL_FACE))
glDisable(GL_CULL_FACE);
else
glEnable(GL_CULL_FACE);

break;

case ‘r’:

    glRotatef(1.0,1.0,0.0,0.0);
break;

case 't':
 

  glRotatef(1.0,0.0,1.0,0.0);

break;
case ‘e’:
exit(0);
break;

case ‘w’:
glRotatef(10,0.0f,0.0f,-1.0f);
break;

case ‘x’:
glRotatef(10,0.0f,0.0f,1.0f);
break;

}

glutPostRedisplay();

}
int main(int argc, char** argv) {
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
glutInitWindowSize(512, 512);
glutInitWindowPosition(20, 20);
glutCreateWindow(“TRANSFORMACIONES”);

// void display(void)
glutDisplayFunc(display);
// void reshape(int width, int height)
glutReshapeFunc(reshape);
// void keyboard(char opcion)
glutKeyboardFunc(keyboard);

glutMainLoop();
return 0;
}

2

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void keyboard (char opcion)
{
    short kul = glIsEnabled(GL_CULL_FACE);
    static float a = 0.1, b = 10.0;

    switch (opcion)  {

       case 'u':  glTranslatef ( 0,  a, 0);  break;
       case 'd':  glTranslatef ( 0, -a, 0);  break;
       case 'l':  glTranslatef (-a,  0, 0);  break;
       case 'k':  glTranslatef ( a,  0, 0);  break;

       case 'f':  if (kul) glDisable(GL_CULL_FACE);
                  else     glEnable (GL_CULL_FACE);   break;

       case 'r':  glRotatef (1, 1, 0,  0);  break;
       case 't':  glRotatef (a, 0, 1,  0);  break;
       case 'w':  glRotatef (b, 0, 0, -1);  break;
       case 'x':  glRotatef (b, 0, 0,  1);  break;

       case 'e':  exit(0);  break;
    }

    glutPostRedisplay();
}


int main (int argc, char** argv)
{
    glutInit               (&argc, argv);
    glutInitDisplayMode    (GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
    glutInitWindowSize     (512, 512);
    glutInitWindowPosition ( 20,  20);
    glutCreateWindow       ("TRANSFORMACIONES");
    glutDisplayFunc        (display);
    glutReshapeFunc        (reshape);
    glutKeyboardFunc       (keyboard);
    glutMainLoop           ();

    return 0;
}