void ObserverNodePath::_setNodePath(const osg::NodePath& nodePath)
{
_clearNodePath();
// OSG_NOTICE<<"ObserverNodePath["<<this<<"]::_setNodePath() nodePath.size()="<<nodePath.size()<<std::endl;
_nodePath.resize(nodePath.size());
for(unsigned int i=0; i<nodePath.size(); ++i)
{
_nodePath[i] = nodePath[i];
}
}
bool PickHandler::doNodePick(osg::NodePath nodePath)
{
Data::Node * n = dynamic_cast<Data::Node *>(nodePath[nodePath.size() - 1]);
if (n != NULL)
{
if (isAltPressed && pickMode == PickMode::NONE && !isShiftPressed)
{
cameraManipulator->setCenter(n->targetPosition());
}
else if (isAltPressed && pickMode == PickMode::NONE && isShiftPressed)
{
if (appConf->getValue("Viewer.PickHandler.SelectInterestPoints").toInt() == 1)
{
Data::Graph * currentGraph = Manager::GraphManager::getInstance()->getActiveGraph();
Util::ElementSelector::weightedElementSelector(currentGraph->getNodes(), appConf->getValue("Viewer.PickHandler.AutopickedNodes").toInt(), this);
}
bool wasEmpty = false;
if (pickedNodes.isEmpty())
{
pickedNodes.append(n);
wasEmpty = true;
}
if (appConf->getValue("Viewer.Display.CameraPositions").toInt() == 1)
{
n->setColor(osg::Vec4(0, 1, 0, 1));
}
cameraManipulator->setNewPosition(n->getCurrentPosition(), getSelectionCenter(false), getSelectedNodes()->toStdList(), getSelectedEdges()->toStdList());
if (wasEmpty)
pickedNodes.removeFirst();
}
else if (pickMode != PickMode::NONE)
{
if (!pickedNodes.contains(n))
{
pickedNodes.append(n);
n->setSelected(true);
}
if (isCtrlPressed)
unselectPickedNodes(n);
return true;
}
}
return false;
}
bool PickHandler::doEdgePick(osg::NodePath nodePath, unsigned int primitiveIndex)
{
osg::Geode * geode = dynamic_cast<osg::Geode *>(nodePath[nodePath.size() - 1]);
if (geode != 0)
{
osg::Drawable * d = geode->getDrawable(0);
osg::Geometry * geometry = d->asGeometry();
if (geometry != NULL)
{
// zmena (plesko): ak vyber zachytil avatara, nastal segmentation fault,
// lebo sa vyberal neexistujuci primitiveSet
Data::Edge * e;
if (geometry->getNumPrimitiveSets() > primitiveIndex) {
e = dynamic_cast<Data::Edge *>(geometry->getPrimitiveSet(primitiveIndex));
} else {
return false;
}
// koniec zmeny
if (e != NULL)
{
if (isAltPressed && pickMode == PickMode::NONE && !isShiftPressed)
{
osg::ref_ptr<osg::Vec3Array> coords = e->getCooridnates();
cameraManipulator->setCenter(DataHelper::getMassCenter(coords));
cameraManipulator->setDistance(Util::ApplicationConfig::get()->getValue("Viewer.PickHandler.PickedEdgeDistance").toFloat());
}
else if (isAltPressed && pickMode == PickMode::NONE && isShiftPressed)
{
if (appConf->getValue("Viewer.PickHandler.SelectInterestPoints").toInt() == 1)
{
Data::Graph * currentGraph = Manager::GraphManager::getInstance()->getActiveGraph();
Util::ElementSelector::weightedElementSelector(currentGraph->getNodes(), appConf->getValue("Viewer.PickHandler.AutopickedNodes").toInt(), this);
}
bool wasEmpty = false;
if (pickedEdges.isEmpty())
{
pickedEdges.append(e);
wasEmpty = true;
}
osg::Vec3f edgeCenter = (e->getSrcNode()->getCurrentPosition() + e->getDstNode()->getCurrentPosition()) / 2;
cameraManipulator->setNewPosition(edgeCenter, getSelectionCenter(false), getSelectedNodes()->toStdList(), getSelectedEdges()->toStdList());
if (wasEmpty)
pickedEdges.removeFirst();
}
else if (pickMode != PickMode::NONE)
{
if (!pickedEdges.contains(e))
{
pickedEdges.append(e);
e->setSelected(true);
}
if (isCtrlPressed)
unselectPickedEdges(e);
return true;
}
return true;
}
}
}
return false;
}
/** Compute intersections between a ray through the specified master cameras window/eye coords and a specified nodePath's subgraph. */
bool ossimPlanetViewer::computeIntersections(float x,
float y,
const osg::NodePath& nodePath,
osgUtil::LineSegmentIntersector::Intersections& intersections,
osg::Node::NodeMask traversalMask)
{
if (!_camera.valid() || nodePath.empty()) return false;
float local_x, local_y = 0.0;
const osg::Camera* camera = getCameraContainingPosition(x, y, local_x, local_y);
if (!camera)
{
if(theIntersectWithMasterIfNotWithinAnyViewFlag)
{
camera = forceAdjustToMasterCamera(x, y, local_x, local_y);
if(!camera) return false;
}
else
{
return false;
}
}
osg::Matrixd matrix;
if (nodePath.size()>1)
{
osg::NodePath prunedNodePath(nodePath.begin(),nodePath.end()-1);
matrix = osg::computeLocalToWorld(prunedNodePath);
}
matrix.postMult(camera->getViewMatrix());
matrix.postMult(camera->getProjectionMatrix());
double zNear = -1.0;
double zFar = 1.0;
if (camera->getViewport())
{
matrix.postMult(camera->getViewport()->computeWindowMatrix());
zNear = 0.0;
zFar = 1.0;
}
osg::Matrixd inverse;
inverse.invert(matrix);
osg::Vec3d startVertex = osg::Vec3d(local_x,local_y,zNear) * inverse;
osg::Vec3d endVertex = osg::Vec3d(local_x,local_y,zFar) * inverse;
osg::ref_ptr< osgUtil::LineSegmentIntersector > picker = new osgUtil::LineSegmentIntersector(osgUtil::Intersector::MODEL, startVertex, endVertex);
osgUtil::IntersectionVisitor iv(picker.get());
iv.setTraversalMask(traversalMask);
nodePath.back()->accept(iv);
if (picker->containsIntersections())
{
intersections = picker->getIntersections();
return true;
}
else
{
intersections.clear();
return false;
}
}