void WaterQuadTree::draw(const Camera &camera, double delta_time) {
if (!setup_done()) { return; }
if (!camera.intersects_box(_patch->get_center(), _patch->get_extents())) {
remove_children();
return;
}
// Get LOD metric to see if we should draw child quads or just draw this one
double rho = compute_level_metric(camera, distance_to_patch(camera, _patch->get_center()));
if (rho >= 0.0 || _level > _deepest_level) {
_patch->draw(camera, delta_time);
remove_children();
}
else {
// If we already have created the children then just draw them
if (_has_children) {
if (_northwest->setup_done() && _northeast->setup_done() &&
_southwest->setup_done() && _southeast->setup_done()) {
_northwest->draw(camera, delta_time);
_northeast->draw(camera, delta_time);
_southwest->draw(camera, delta_time);
_southeast->draw(camera, delta_time);
}
else {
// Draw this tile until all children is setup
_patch->draw(camera, delta_time);
}
}
else { // Else create children and draw this tile
subdivide();
_patch->draw(camera, delta_time);
}
}
}
static int
f1 (int f1arg)
{
int f1loc;
f1loc = f1arg - 1;
setup_done ();
return f1loc;
}
static void
setup (char arg_c, int arg_i, int arg_j)
{
char loc_arg_c = arg_c;
int loc_arg_i = arg_i;
int loc_arg_j = arg_j;
info_qt_inc += loc_arg_c + loc_arg_i + loc_arg_j;
setup_done ();
}
