void VrmlScene::replaceWorld( VrmlMFNode &nodes, VrmlNamespace *ns,
Doc *url, Doc *urlLocal )
{
theSystem->debug("replaceWorld( url %s )\n", url->url());
delete d_namespace;
delete d_url;
delete d_urlLocal;
d_namespace = ns;
d_url = url;
d_urlLocal = urlLocal;
// Clear bindable stacks.
bindableRemoveAll( d_backgroundStack );
bindableRemoveAll( d_fogStack );
bindableRemoveAll( d_navigationInfoStack );
bindableRemoveAll( d_viewpointStack );
// Get rid of current world: pending events, nodes.
flushEvents();
d_nodes.removeChildren();
// Do this to set the relative URL
d_nodes.addToScene( (VrmlScene *) this, urlDoc()->url() );
// Add the nodes to a Group and put the group in the scene.
// This will load EXTERNPROTOs and Inlines.
d_nodes.addChildren( nodes );
// Send initial set_binds to bindable nodes
double timeNow = theSystem->time();
VrmlSFBool flag(true);
VrmlNode *bindable = 0; // compiler warning
if (d_backgrounds->size() > 0 &&
(bindable = d_backgrounds->front()) != 0)
bindable->eventIn( timeNow, "set_bind", &flag );
if (d_fogs->size() > 0 &&
(bindable = d_fogs->front()) != 0)
bindable->eventIn( timeNow, "set_bind", &flag );
if (d_navigationInfos->size() > 0 &&
(bindable = d_navigationInfos->front()) != 0)
bindable->eventIn( timeNow, "set_bind", &flag );
if (d_viewpoints->size() > 0 &&
(bindable = d_viewpoints->front()) != 0)
bindable->eventIn( timeNow, "set_bind", &flag );
// Notify anyone interested that the world has changed
doCallbacks( REPLACE_WORLD );
setModified();
}
bool VrmlScene::load(const char *url, const char *localCopy)
{
// Look for '#Viewpoint' syntax. There ought to be a current
// scene if this format is used.
VrmlSFBool flag(true);
if (*url == '#')
{
VrmlNode *vp = d_namespace ? d_namespace->findNode(url+1) : 0;
// spec: ignore if named viewpoint not found
if (vp)
{
vp->eventIn( theSystem->time(), "set_bind", &flag );
setModified();
}
return true;
}
// Try to load a file. Prefer a local copy if available.
Doc *tryUrl;
if (localCopy)
tryUrl = new Doc( localCopy, 0 );
else
tryUrl = new Doc( url, d_url);
VrmlNamespace *newScope = new VrmlNamespace();
VrmlMFNode *newNodes = readWrl( tryUrl, newScope );
if ( newNodes )
{
Doc *sourceUrl = tryUrl, *urlLocal = 0;
if (localCopy)
{
sourceUrl = new Doc( url );
urlLocal = tryUrl;
}
replaceWorld( *newNodes, newScope, sourceUrl, urlLocal );
delete newNodes;
// Look for '#Viewpoint' syntax
if ( sourceUrl->urlModifier() )
{
VrmlNode *vp = d_namespace->findNode( sourceUrl->urlModifier()+1 );
double timeNow = theSystem->time();
if (vp)
vp->eventIn( timeNow, "set_bind", &flag );
}
return true; // Success.
}
delete tryUrl;
return false;
}
//
// The update method is where the events are processed. It should be
// called after each frame is rendered.
//
bool VrmlScene::update( double timeStamp )
{
if (timeStamp <= 0.0) timeStamp = theSystem->time();
VrmlSFTime now( timeStamp );
d_deltaTime = DEFAULT_DELTA;
// Update each of the timers.
VrmlNodeList::iterator i, end = d_timers->end();
for (i = d_timers->begin(); i != end; ++i)
{
VrmlNodeTimeSensor *t = (*i)->toTimeSensor();
if (t) t->update( now );
}
// Update each of the clips.
end = d_audioClips->end();
for (i = d_audioClips->begin(); i != end; ++i)
{
VrmlNodeAudioClip *c = (*i)->toAudioClip();
if (c) c->update( now );
}
// Update each of the scripts.
end = d_scripts->end();
for (i = d_scripts->begin(); i != end; ++i)
{
VrmlNodeScript *s = (*i)->toScript();
if (s) s->update( now );
}
// Update each of the movies.
end = d_movies->end();
for (i = d_movies->begin(); i != end; ++i)
{
VrmlNodeMovieTexture *m = (*i)->toMovieTexture();
if (m) m->update( now );
}
// Pass along events to their destinations
while (d_firstEvent != d_lastEvent &&
! d_pendingUrl && ! d_pendingNodes)
{
Event *e = &d_eventMem[d_firstEvent];
d_firstEvent = (d_firstEvent+1) % MAXEVENTS;
// Ensure that the node is in the scene graph
VrmlNode *n = e->toNode;
if (this != n->scene())
{
theSystem->debug("VrmlScene::update: %s::%s is not in the scene graph yet.\n",
n->nodeType()->getName(), n->name());
n->addToScene((VrmlScene*)this, urlDoc()->url() );
}
n->eventIn(e->timeStamp, e->toEventIn, e->value);
// this needs to change if event values are shared...
delete e->value;
}
if (d_pendingNodes)
{
replaceWorld( *d_pendingNodes, d_pendingScope );
delete d_pendingNodes;
d_pendingNodes = 0;
d_pendingScope = 0;
}
else if (d_pendingUrl)
{
(void) loadUrl( d_pendingUrl, d_pendingParameters );
delete d_pendingUrl;
delete d_pendingParameters;
d_pendingUrl = 0;
d_pendingParameters = 0;
}
// Signal a redisplay if necessary
return isModified();
}