#include "stdlib.h"
#include "gl/glut.h"
int w=400, h=400, z=0;
int x1=0, y1=0, sudut=0, z1=0, skalaX=0, skalaY=0;
void renderScene(void){
 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 //glClearColor(1,1,1,1);
 glLoadIdentity();
 glTranslatef(0,0,z);
 glRotatef(sudut,x1,y1,z1);
 glPushMatrix();
 glTranslatef(0,-5,0);
 glColor3f(1,1,1);
 glutWireSphere(4,200,50);
 glPopMatrix();
 glPushMatrix();
 glTranslatef(0,0,0);
 glColor3f(1,1,1);
 glutWireSphere(3,200,50);
 glPopMatrix();
 glPushMatrix();
 glTranslatef(0,4,0);
 glColor3f(1,1,1);
 glutWireSphere(2,200,50);
 glPopMatrix();
 glPushMatrix();
 glTranslatef(0,4,0);
 glColor3f(1,0,0);
 glutWireCone(1,3,200,50);
 glPopMatrix();
 glPushMatrix();
 glTranslatef(1,4.5,2);
 glColor3f(0,0,0);
 glutWireSphere(0.1,200,50);
 glPopMatrix();
 glPushMatrix();
 glTranslatef(-1,4.5,2);
 glColor3f(0,0,0);
 glutWireSphere(0.1,200,50);
 glPopMatrix();
 glPushMatrix();
 glTranslatef(0,5,0);
 glRotatef(-90,1,0,0);
 glColor3f(0,0,1);
 glutWireCone(2,4,200,50);
 glPopMatrix();
 glutSwapBuffers();
}
void resize(int w1,int h1){
 glViewport(0,0,w1,h1);
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 gluPerspective(45.0,(float) w1/(float) h1, 1.0,300.0);
 glMatrixMode(GL_MODELVIEW); 
 glLoadIdentity();
}
void myKeyboard(unsigned char key, int x, int y){
 if (key =='a') z+=5;
 else if (key == 'd') z-=5;
 else if (key == 'x') {
  x1=1;
  y1=0;
  z1=0;
  sudut+=10;
 }
 else if (key == 'y') {
  y1=1;
  x1=0;
  z1=0;
  sudut+=-10;
 }
 else if (key == 'z') {
  y1=0;
  x1=0;
  z1=1;
  sudut+=-10;
 }
}
void mySpecialKeyboard(int key, int x, int y){
 switch(key){
  case GLUT_KEY_UP:
   z+=5;
  break;
  case GLUT_KEY_DOWN:
   z-=5;
  break;
 }
}
void init(){
 glClearColor(0,0,0,1);
 glEnable(GL_DEPTH_TEST);
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 gluPerspective(45.0,(GLdouble) w/(GLdouble) h, 1.0,300.0);
 glMatrixMode(GL_MODELVIEW);
}
void timer(int value){
 glutPostRedisplay();
 glutTimerFunc(50,timer,0);
}
void main (int argc, char **argv){
 glutInit(&argc, argv);
 glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH | GLUT_RGBA);
 glutInitWindowPosition(100,100);
 glutInitWindowSize(w,h);
 glutCreateWindow("3D");
 gluOrtho2D(-w/2,w/2,-h/2,h/2);
 glutDisplayFunc(renderScene);
 glutReshapeFunc(resize);
 glutKeyboardFunc(myKeyboard);
 glutSpecialFunc(mySpecialKeyboard);
 glutTimerFunc(1,timer,0);
 init();
 glutMainLoop();
}