8.- CUBO EN 2D

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                CUBO EN 2D

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#include "stdafx.h"

#include <GL/glut.h>
void reshape( int width, int height)
{
glViewport(0,0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-3,7,-5,5,-5,5);
glMatrixMode(GL_MODELVIEW);
}

void display()
{
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1,1,1);
glLoadIdentity();
glBegin(GL_LINE_LOOP);
glVertex2f(0,0);
glVertex2f(3,0);
glVertex2f(3,-3);
glVertex2f(0,-3);
glVertex2f(0,0);
glVertex2f(-2,1);
glVertex2f(-2,-2);
glVertex2f(0,-3);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex2f(3,0);
glVertex2f(1,1);
glVertex2f(-2,1);
glVertex2f(-2,-2);
glVertex2f(1,-2);
glVertex2f(1,1);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex2f(1,-2);
glVertex2f(3,-3);

glEnd();
glFlush();
}

void init()
{
glClearColor(0,0,0,0);
}
int main (int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowPosition(50,50);
glutInitWindowSize(500,500);
glutCreateWindow("CUBO 2D");
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
return 0;
}