SoPickedPoint* ViewProvider::getPointOnRay(const SbVec2s& pos, const View3DInventorViewer* viewer) const
{
//first get the path to this node and calculate the current transformation
SoSearchAction sa;
sa.setNode(pcRoot);
sa.setSearchingAll(true);
sa.apply(viewer->getSoRenderManager()->getSceneGraph());
if (!sa.getPath())
return nullptr;
SoGetMatrixAction gm(viewer->getSoRenderManager()->getViewportRegion());
gm.apply(sa.getPath());
SoTransform* trans = new SoTransform;
trans->setMatrix(gm.getMatrix());
trans->ref();
// build a temporary scenegraph only keeping this viewproviders nodes and the accumulated
// transformation
SoSeparator* root = new SoSeparator;
root->ref();
root->addChild(viewer->getSoRenderManager()->getCamera());
root->addChild(trans);
root->addChild(pcRoot);
//get the picked point
SoRayPickAction rp(viewer->getSoRenderManager()->getViewportRegion());
rp.setPoint(pos);
rp.setRadius(viewer->getPickRadius());
rp.apply(root);
root->unref();
trans->unref();
SoPickedPoint* pick = rp.getPickedPoint();
return (pick ? new SoPickedPoint(*pick) : 0);
}
bool ViewProviderDragger::setEdit(int ModNum)
{
Q_UNUSED(ModNum);
App::DocumentObject *genericObject = this->getObject();
if (genericObject->isDerivedFrom(App::GeoFeature::getClassTypeId()))
{
App::GeoFeature *geoFeature = static_cast<App::GeoFeature *>(genericObject);
const Base::Placement &placement = geoFeature->Placement.getValue();
SoTransform *tempTransform = new SoTransform();
tempTransform->ref();
updateTransform(placement, tempTransform);
assert(!csysDragger);
csysDragger = new SoFCCSysDragger();
csysDragger->draggerSize.setValue(0.05f);
csysDragger->translation.setValue(tempTransform->translation.getValue());
csysDragger->rotation.setValue(tempTransform->rotation.getValue());
tempTransform->unref();
pcTransform->translation.connectFrom(&csysDragger->translation);
pcTransform->rotation.connectFrom(&csysDragger->rotation);
csysDragger->addStartCallback(dragStartCallback, this);
csysDragger->addFinishCallback(dragFinishCallback, this);
pcRoot->insertChild(csysDragger, 0);
TaskCSysDragger *task = new TaskCSysDragger(this, csysDragger);
Gui::Control().showDialog(task);
}
return true;
}
SoPickedPoint* ViewProvider::getPointOnRay(const SbVec3f& pos,const SbVec3f& dir, const View3DInventorViewer* viewer) const
{
// Note: There seems to be a bug with setRay() which causes SoRayPickAction
// to fail to get intersections between the ray and a line
//first get the path to this node and calculate the current setTransformation
SoSearchAction sa;
sa.setNode(pcRoot);
sa.setSearchingAll(true);
sa.apply(viewer->getSoRenderManager()->getSceneGraph());
SoGetMatrixAction gm(viewer->getSoRenderManager()->getViewportRegion());
gm.apply(sa.getPath());
// build a temporary scenegraph only keeping this viewproviders nodes and the accumulated
// transformation
SoTransform* trans = new SoTransform;
trans->ref();
trans->setMatrix(gm.getMatrix());
SoSeparator* root = new SoSeparator;
root->ref();
root->addChild(viewer->getSoRenderManager()->getCamera());
root->addChild(trans);
root->addChild(pcRoot);
//get the picked point
SoRayPickAction rp(viewer->getSoRenderManager()->getViewportRegion());
rp.setRay(pos,dir);
rp.setRadius(viewer->getPickRadius());
rp.apply(root);
root->unref();
trans->unref();
// returns a copy of the point
SoPickedPoint* pick = rp.getPickedPoint();
//return (pick ? pick->copy() : 0); // needs the same instance of CRT under MS Windows
return (pick ? new SoPickedPoint(*pick) : 0);
}
