void keyboard(unsigned char key, int x, int y)
{
switch ( key ) {
case 'h':
printf("\n");
printf("------------------------------------------------\n");
printf(" T r a c k b a l l V i e w e r \n");
printf("------------------------------------------------\n");
printf("\n");
printf(" MOUSE\n");
printf("+-------------+---------------+----------------+\n");
printf("| Left button | Middle button | Right button |\n");
printf("+-------------+---------------+----------------+\n");
printf("| Rotation | TranslationZ | TranslationXY |\n");
printf("+-------------+---------------+----------------+\n");
printf("\n");
printf(" KEYBOARD");
printf(" \to\tback to Origin\n");
printf(" \t\tq\tQuit\n");
printf(" \t\th\tdisplay Help\n");
printf("\n");
break;
case 'o':
tb.reinitializeTransf();
glutPostRedisplay();
break;
case 'q':
exit(EXIT_SUCCESS);
break;
default:
fprintf(stderr, "Error: unknown option !\n");
break;
}
}
