void
vpSimulator::initSceneGraph()
{
this->scene = new SoSeparator;
this->internalRoot = new SoSeparator;
this->externalRoot = new SoSeparator;
this->scene->ref();
this->internalRoot->ref();
this->externalRoot->ref();
// define the camera SoPerspectiveCamera
this->internalCamera = new SoPerspectiveCamera ;
this->externalCamera = new SoPerspectiveCamera ;
this->internalCameraPosition = new SoTransform;
this->internalCameraObject = createCameraObject(zoomFactor);
internalCamera->farDistance.setValue(100);
internalCamera->nearDistance.setValue(0.0001f);
// link between camera and internal root
this->internalRoot->addChild (this->internalCamera);
this->internalRoot->addChild (this->scene);
this->externalRoot->addChild (this->externalCamera);
this->externalRoot->addChild (this->scene);
SoSeparator * camera = new SoSeparator;
camera->ref();
camera->addChild (this->internalCameraPosition);
camera->addChild (this->internalCameraObject);
this->externalRoot->addChild (camera);
//this->externalRoot->addChild (internalCameraPosition);
// this->externalRoot->addChild (internalCameraObject);
SoCube *cube = new SoCube ;
cube->width=0.01f ;
cube->depth=0.01f ;
cube->height=0.01f ;
this->externalRoot->addChild (cube);
if (realtime==NULL)
{
SoDB::enableRealTimeSensor(FALSE);
SoSceneManager::enableRealTimeUpdate(FALSE);
realtime = (SbTime *) SoDB::getGlobalField("realTime");
realtime->setValue(0.0);
}
}
/**
* This method will export the argument node and traverse
* into its child nodes to export them.
*/
BOOL OSGExp::nodeEnum(osg::Group* rootTransform, INode* node, osg::Group* parent)
{
osg::ref_ptr<osg::Group> child = NULL;
_nCurNode++;
_ip->ProgressUpdate((int)((float)_nCurNode/_nTotalNodeCount*100.0f));
// Stop traversing if the user pressed Cancel.
if (_ip->GetCancel())
return TRUE;
// If node is hidden and we are not exporting hidden nodes then return.
if(node->IsNodeHidden() && !_options->getExportHiddenNodes()){
return TRUE;
}
// Capture a special group helper if one is returned.
// Nodes such as LODs and Switches will have to apply
// special flags to their immediate children and thus
// cannot be traversed in the normal recursive flow.
// osg::Group* specialGroup = NULL;
// Only export if hole scene is to be exported or
// this node is choosen to be exported.
if(!_onlyExportSelected || node->Selected())
{
// The ObjectState is a 'thing' that flows down the pipeline containing
// all information about the object. By calling EvalWorldState() we tell
// max to evaluate the object at the end of the pipeline.
// An object may start out as an sphere, but could be modified by an modifier
// object, the EvalWorldState will apply all modifiers to the original object
// and return the final geometry for the object.
ObjectState os = node->EvalWorldState(_ip->GetTime());
// Use temporary variables for cleaner code.
Object* obj = os.obj;
TimeValue timeValue = _ip->GetTime();
// If this a group node then make a OSG group node and add it to
// the parent node and traverse into the children.
if(node->IsGroupHead() || obj->ClassID() == Class_ID(DUMMY_CLASS_ID,0))
{
// Do not export referenced groups.
if(Util::isReferencedByHelperObjects(node, _helperIDs))
return TRUE;
osg::MatrixTransform* groupNode = new osg::MatrixTransform();
// Set name of group node.
groupNode->setName(std::string(node->GetName()));
// Set static datavariance for better performance
groupNode->setDataVariance(osg::Object::STATIC);
// Are we exporting animations.
if(_options->getExportAnimations()){
addAnimation(node, timeValue, groupNode);
}
// Set NodeMask
if(_options->getUseDefaultNodeMaskValue())
groupNode->setNodeMask(_options->getDefaultNodeMaskValue());
groupNode->setMatrix(getNodeTransform(node, timeValue));
parent->addChild(groupNode);
parent = groupNode;
applyNodeMaskValue(node, timeValue, groupNode);
}
// If this is not a group node it could be a geomtry object,
// a camera, a light, or some other class. Switch the class ID
// to carry out a specific export.
// Note, it is the obj member of ObjectState which
// is the actual object we are exporting.
else if(obj != NULL)
{
Class_ID cid = obj->ClassID();
// We look at the super class ID to determine the type of the object.
switch(obj->SuperClassID())
{
case GEOMOBJECT_CLASS_ID:
if(!Util::isReferencedByHelperObjects(node, _helperIDs))
{
child = createGeomObject(rootTransform, node, obj, timeValue).get();
parent->addChild(child.get());
}
break;
case CAMERA_CLASS_ID:
if(_options->getExportCameras())
{
child = createCameraObject(rootTransform, node, obj, timeValue).get();
parent->addChild(child.get());
}
break;
case LIGHT_CLASS_ID:
if(_options->getExportLights())
{
child = createLightObject(rootTransform, node, obj, timeValue).get();
parent->addChild(child.get());
}
break;
case SHAPE_CLASS_ID:
if(_options->getExportShapes() && !Util::isReferencedByHelperObject(node, OCCLUDER_CLASS_ID))
{
child = createShapeObject(rootTransform, node, obj, timeValue).get();
parent->addChild(child.get());
}
break;
case HELPER_CLASS_ID:
{
bool notRefByHelpers = Util::isReferencedByHelperObjects(node, _helperIDs) == NULL;
bool exportHelpers = _options->getExportHelpers() == TRUE;
if(_options->getExportPointHelpers() && cid == Class_ID(POINTHELP_CLASS_ID,0))
{
child = createPointFromHelperObject(rootTransform, node, obj, timeValue).get();
parent->addChild(child.get());
}
if(exportHelpers && notRefByHelpers)
{
if(cid == OSGGROUP_CLASS_ID)
{
child = createGroupFromHelper(parent, node, obj, timeValue).get();
}
else if(cid == LOD_CLASS_ID)
{
child = createLODFromHelperObject(parent, node, obj, timeValue).get();
}
else if(cid == SWITCH_CLASS_ID)
{
child = createSwitchFromHelperObject(parent, node, obj, timeValue).get();
}
else if(cid == DOFTRANSFORM_CLASS_ID)
{
child = createDOFFromHelper(parent, node, obj, timeValue).get();
}
else
{
rootTransform->addChild(createHelperObject(rootTransform, node, obj, timeValue).get());
}
}
}
break;
default:
break;
}
}
}
for(int c = 0; c < node->NumberOfChildren(); c++)
{
if(_ip->GetCancel() || ! nodeEnum(rootTransform, node->GetChildNode(c),child.valid()?child.get():parent))
{
// If user cancels export we return false.
return FALSE;
}
}
return TRUE;
}
