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); }