// Wuerfel

#define LINUX

#ifdef LINUX
#include <X11/Xlib.h>
#include <GL/gl.h>
#include <GL/glut.h>
#endif

#ifdef WINDOWS
#include <windows.h>
#include <gl\gl.h>
#include <gl\glut.h>
#endif

void wuerfel()
{
	glBegin(GL_POLYGON); // vordere Flaeche
	glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
	glVertex3f( 1.0f,  1.0f, 1.0f);
	glVertex3f(-1.0f,  1.0f, 1.0f);
	glVertex3f(-1.0f, -1.0f, 1.0f);
	glVertex3f( 1.0f, -1.0f, 1.0f);
	glEnd();

	glBegin(GL_POLYGON); // rechte Seitenflaeche
	glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
	glVertex3f(1.0f,  1.0f,  1.0f);
	glVertex3f(1.0f,  1.0f, -1.0f);
	glVertex3f(1.0f, -1.0f, -1.0f);
	glVertex3f(1.0f, -1.0f,  1.0f);
	glEnd();

	glBegin(GL_POLYGON); // hintere Flaeche
	glColor4f(0.f, 1.0f, 0.0f, 1.0f);
	glVertex3f(-1.0f, -1.0f, -1.0f);
	glVertex3f(-1.0f,  1.0f, -1.0f);
	glVertex3f( 1.0f,  1.0f, -1.0f);
	glVertex3f( 1.0f, -1.0f, -1.0f);
	glEnd();

	glBegin(GL_POLYGON); // linke Seitenflaeche
	glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
	glVertex3f(-1.0f,  1.0f,  1.0f);
	glVertex3f(-1.0f, -1.0f,  1.0f);
	glVertex3f(-1.0f, -1.0f, -1.0f);
	glVertex3f(-1.0f,  1.0f, -1.0f);
	glEnd();

	glBegin(GL_POLYGON); //untere Flaeche
	glColor4f(0.0f, 0.0f, 0.1f, 1.0f);
	glVertex3f(-1.0f, -1.0f,  1.0f);
	glVertex3f(-1.0f, -1.0f, -1.0f);
	glVertex3f( 1.0f, -1.0f, -1.0f);
	glVertex3f( 1.0f, -1.0f,  1.0f);
	glEnd();

	glBegin(GL_POLYGON); // obere Flaeche
	glColor4f(1.0f, 1.0f, 0.0f, 1.0f);
	glVertex3f(-1.0f, 1.0f,  1.0f);
	glVertex3f(-1.0f, 1.0f, -1.0f);
	glVertex3f( 1.0f, 1.0f, -1.0f);
	glVertex3f( 1.0f, 1.0f,  1.0f);
	glEnd();
}