#include <math.h>
#include <stdlib.h>
#include <sysexits.h>
#include <time.h>
#include <sys/time.h>

#include <GL/gl.h>
#include <GL/glu.h>

#include "GnomeScreensaver.h"

static bool expose (GnomeScreensaver & gs)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();
    glRotatef(gs.getTicks()/1000.0*360.0, 0, 0, 1);
    glBegin(GL_QUADS);
    glColor3f(1, 0.6, 0);
    glNormal3f(0, 0, 1);
    glVertex2f(1, 1);
    glVertex2f(-1, 1);
    glVertex2f(-1, -1);
    glVertex2f(1, 0);
    glEnd();
    glPopMatrix();

    return true;
}

static bool configure (GnomeScreensaver & gs, int width, int height)
{
    glViewport(0, 0, width, height);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60.0, (double)width / (double)height, 0.001, 1000.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glTranslatef(0, 0, -2);

    glShadeModel(GL_SMOOTH);

    return true;
}

static bool update (GnomeScreensaver & gs)
{
    return true;
}

int main (int argc, char *argv[])
{
    GnomeScreensaver gs(&argc, &argv, configure, expose, update, 12);

    gs.mainloop();

    return 0;
}