/* simple.c
/*   A trivial CAVE demo program, demonstrating the most basic CAVE library
/*   functions. This program just draws a red triangle in the front of the
/*   CAVE. No interaction (outside of moving around), and nothing changes.
*/

#include 

void simple_draw(void);

main(int argc,char **argv)
{
   /* Initialize the CAVE */
   CAVEConfigure(&argc,argv,NULL);
   CAVEInit();

   /* Give the library a pointer to the drawing function */
   CAVEDisplay(simple_draw,0);

   /* Wait for the escape key to be hit */
   while (!getbutton(ESCKEY))
      sginap(10);

   /* Clean up & exit */
   CAVEExit();
}

/* simple_draw - the display function. This function is called by the
   CAVE library in the rendering processes' display loop. It draws a red
   triangle 2 feet tall, 4 feet off the floor, and 1 foot in front of the
   front wall (assuming a 10' CAVE). */
void simple_draw(void)
{
   float vert1[3] = { -1, 4, -4},
   vert2[3] = { 1, 4, -4},
   vert3[3] = { 0, 6, -4};
   cpack(0); clear(); zclear();
   cpack(0xff);
   bgnline();
   v3f(vert1);
   v3f(vert2);
   v3f(vert3);
   v3f(vert1);
   endline();
}