/*
 * ex1.c -- An example program for SOOGL.
 *
 * Draw a simple sphere in the middle of the screen.  The lights and camera 
 * are positioned absolutely (there are no transformations applied to them).
 *
 * Copyright (c) Blair MacIntyre, The Georgia Institute of Technology, 1999.
 */

#include "soogl.h"
#include <math.h>

int
main(int argc, char **argv)
{
  int camera, window, root, lightAmb, light1, group, sphere;

  /* initialize the package */
  sooglInit(&argc, argv);

  /* create a window */
  glutInitWindowPosition(10, 10);
  glutInitWindowSize(500, 500);
  window = glutCreateWindow("SOOGL Example Program");

  /* create a camera */
  camera = sooglNewCamera(0.0, 0.0, 30.0, /* eye is at (0,0,30) */
			  0.0, 0.0, 0.0, /* center is at (0,0,0) */
			  0.0, 1.0, 0.0, /* up is in positive Y direction */
			  40.0, /* field of view in degree */ 
			  1.0, /* aspect ratio */ 
			  1.0, /* Z near */
			  100.0);/* Z far */

  /* create a root object, using this window and camera. */
  root = sooglNewRoot(window, camera);

  /* create an ambient light and add it to the scene graph. */
  lightAmb = sooglNewAmbient(0.2, 0.2, 0.2);
  sooglAddChild(root, lightAmb);

  /* create a directional light and add it to the scene graph. */
  light1 = sooglNewDirectionalLight(0.4, 1.0, 0.4, /* green-tinted */
				   6.0, 0.0, 0.0); /* from the x axis */
  light1 = sooglNewPositionalLight(0.4, 1.0, 0.4, /* green-tinted */
				   6.0, 0.0, 0.0, /* on the x axis */
				   1.0, 0.0, 0.0);
  sooglAddChild(root, light1);

  /* create a group and add it to the root. */
  group = sooglNewGroup();
  sooglAddChild(root, group);

  /* create a simple sphere with some properties, and put it in the group. */
  sphere = sooglNewSphere(4.0, 13);
  sooglSetShadeModel(sphere, SOOGL_SMOOTH_SHADE);
  sooglSetMaterial(sphere, 1.0, 0.5, 0.5);
  sooglAddChild(group, sphere);
  
  /* go! */
  glutMainLoop();
  return 0;             /* ANSI C requires main to return int. */
}