Piramide Giratoria U3

#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){    //Piramide


//Cara Fontral
   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();   


 
 //cara trasera
  glShadeModel(GL_SMOOTH);
  //glColor3f(0.0f, 1.0f, 0.0f);
     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();   

//cara lateral izquierda


 glShadeModel(GL_SMOOTH);
  //glColor3f(0.0, 1.0, 1.0);   
     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();   

//car later der

 glShadeModel(GL_SMOOTH);
 // glColor3f(1.0f, 1.0f, 0.0f);   
     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();

//Base
   
  
  glShadeModel(GL_SMOOTH);
 // glColor3f(1.0f, 0.0f, 1.0f);   
  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);//aumentar
   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("Piramide Que gira en su propio eje");   
   init();   
   glutDisplayFunc(display);   
   glutReshapeFunc(reshape);   
   glutIdleFunc(idle);   
   glutMainLoop();   
   return 0;

 }