piramide

#include <GL/glut.h>
GLfloat anguloCuboX = 0.0f;
 GLfloat anguloCuboY = 0.0f;
 GLint ancho=500;
 GLint alto=500;
 int hazPerspectiva = 0;
  void reshape(int width, int height){  
   glViewport(0, 0, width, height);  
   glMatrixMode(GL_PROJECTION);  
   glLoadIdentity();      
   if(hazPerspectiva)    
    gluPerspective(60.0f, (GLfloat)width/(GLfloat)height, 1.0f, 20.0f);  
   else
       glOrtho(-4,4, -1, 4, -5, 10);  
   glMatrixMode(GL_MODELVIEW);    
   ancho = width;  
   alto = height;
  }

 void Piramide(void){

   glShadeModel(GL_SMOOTH);
  glColor3f(1.0, 0.0, 0.0);
  glBegin(GL_POLYGON);
   glVertex3f(0.0, 1.0,  0.0);  
   glVertex3f( 1.0f, 0.0f,  1.0f);  
   glVertex3f( 0.0f,  1.0f,  0.0f);
   glEnd();  

  glShadeModel(GL_SMOOTH);
     glBegin(GL_POLYGON);      
    glColor3f(1.0f, 1.0f, 1.0f);
  glVertex3f(-1.0f, 0.0f,  -1.0f);  
     glVertex3f( 1.0f, 0.0f,  -1.0f);
  glColor3f(0.0f, 1.0f, 0.0f);
  glVertex3f( 0.0f,  1.0f,  0.0f);
     glEnd();  

 glShadeModel(GL_SMOOTH);
     glBegin(GL_POLYGON);        
     glVertex3f(-1.0f, 0.0f,  1.0f);
   glColor3f(0.0, 1.0, 1.0);
     glVertex3f( -1.0f, 0.0f, -1.0f);  
  glVertex3f( 0.0f,  1.0f,  0.0f);  
  glEnd();

 glShadeModel(GL_SMOOTH);
     glBegin(GL_POLYGON);      
  glVertex3f(1.0f, 0.0f,  1.0f);
  glColor3f(1.0f, 0.0f, 0.0f);
     glVertex3f( 1.0f, 0.0f,  -1.0f);  
  glVertex3f( 0.0f,  1.0f,  0.0f);
  glEnd();

  glShadeModel(GL_SMOOTH);  
  glBegin(GL_QUADS);
  glVertex3f( 1.0f,0.0f, -1.0f);  
  glVertex3f( 1.0f, 0.0f,  1.0f);
  glColor3f(1.0f, 1.0f, 0.0f);
  glVertex3f(-1.0f,0.0f,  1.0f);  
  glVertex3f(-1.0f, 0.0f, -1.0f);  
  glEnd();

 }

  void display(){
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    
   glLoadIdentity();    
  glScalef(2.5f, 2.5f, 2.5f);
   glRotatef(anguloCuboY, 0.0f, 1.0f, 0.0f);
   Piramide();    
   glLoadIdentity();    
   glFlush();  
   glutSwapBuffers();  
  anguloCuboX+=0.1f;  
   anguloCuboY+=0.1f;
  }

 void init(){
   glClearColor(0,0,0,0);  
   glEnable(GL_DEPTH_TEST);  
   ancho = 400;  
   alto = 400;
  }
 void idle(){  display();  }

 int main(int argc, char **argv){  
 
   glutInit(&argc, argv);  
   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);  
   glutInitWindowPosition(100, 100);  
   glutInitWindowSize(ancho, alto);  
   glutCreateWindow("Tania Esparza");  
   init();  
   glutDisplayFunc(display);  
   glutReshapeFunc(reshape);  
   glutIdleFunc(idle);  
   glutMainLoop();  
   return 0;
 }