/* 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 <cave.h>

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();
}