Hi Shawn,
I'm afraid I have too little time available to help out at a fine grained level.
Robert.
On 10/22/07, Shawn Cook <[EMAIL PROTECTED]> wrote:
>
> Thanks for the response, Robert. I'm in the midst of a small rewrite to
> try something else to optimize my code and now I have another question: In
> my UpdateCallBack for all my many quads I want to add a new quad only when
> it is needed. However, with the code below I get a break point (exception)
> when OSG calls its draw() method. So my question is: what is the
> appropriate way to add/update vertices in a dynamic fashion. If you could
> just point me to one of OSG's many fine examples that would be sufficient.
> Thanks.
>
> virtual void operator() (osg::Node* node, osg::NodeVisitor* nv)
> {
> if( isInitialized ) {
> osg::Geode *geode = dynamic_cast<osg::Geode*> (node);
> if (nv && geode && nv->getFrameStamp())
> {
> osg::Geometry *nodeGeom = dynamic_cast<osg::Geometry*>
> (geode->getDrawable(1));
> osg::Geometry *tailGeom = dynamic_cast<osg::Geometry*>
> (geode->getDrawable(0));
> if( nodeGeom && tailGeom ) {
> osg::Vec3Array *nodeVecs = dynamic_cast<osg::Vec3Array*>
> (nodeGeom->getVertexArray());
> osg::Vec3Array *tailVecs = dynamic_cast<osg::Vec3Array*>
> (tailGeom->getVertexArray());
> if( nodeVecs && tailVecs ) {
> for( std::map< unsigned int,NODE >::iterator iter_node=nodeList.begin();
> iter_node!=nodeList.end(); iter_node++ ) {
> unsigned int nodeIndex = iter_node->first;
> NODE thisNode = iter_node->second;
> if( nodeIndex>=(nodeVecs->size()*4) ) {
> nodeVecs->push_back(osg::Vec3(thisNode.pos_x-NODEWIDTH/2,
> thisNode.pos_y-NODEHEIGHT/2, 0.0));
> nodeVecs->push_back(osg::Vec3(thisNode.pos_x+NODEWIDTH/2,
> thisNode.pos_y-NODEHEIGHT/2, 0.0));
> nodeVecs->push_back(osg::Vec3(thisNode.pos_x+NODEWIDTH/2,
> thisNode.pos_y+NODEHEIGHT/2, 0.0));
> nodeVecs->push_back(osg::Vec3(thisNode.pos_x-NODEWIDTH/2,
> thisNode.pos_y+NODEHEIGHT/2, 0.0));
> }//if
> }//for nodes
>
> nodeGeom->setVertexArray(nodeVecs);
> tailGeom->setVertexArray(tailVecs);
> }//if vecs
> }//if geom
> }
> }//if isInitialized
> // must continue subgraph traversal.
> traverse(node,nv);
> }
>
> ________________________________
> Peek-a-boo FREE Tricks & Treats for You! Get 'em!
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
