C++ SoCamera::viewBoundingBox方法代码示例

void CmdPartDesignBody::activated(int iMsg)
{
    Q_UNUSED(iMsg);
    if ( !PartDesignGui::assureModernWorkflow( getDocument() ) )
        return;
    App::Part *actPart = PartDesignGui::getActivePart ();
    App::Part* partOfBaseFeature = nullptr;

    std::vector<App::DocumentObject*> features =
        getSelection().getObjectsOfType(Part::Feature::getClassTypeId());
    App::DocumentObject* baseFeature = nullptr;
    bool viewAll = features.empty();


    if (!features.empty()) {
        if (features.size() == 1) {
            baseFeature = features[0];
            if ( baseFeature->isDerivedFrom ( PartDesign::Feature::getClassTypeId() ) &&
                    PartDesign::Body::findBodyOf ( baseFeature ) ) {
                // Prevent creating bodies based on features already belonging to other bodies
                QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                        QObject::tr("Body can't be based on a PartDesign feature."));
                baseFeature = nullptr;
            }
            else if (PartDesign::Body::findBodyOf ( baseFeature )){
                QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                        QObject::tr("%1 already belongs to a body, can't use it as base feature for another body.")
                                     .arg(QString::fromUtf8(baseFeature->Label.getValue())));
                baseFeature = nullptr;
            }
            else if ( baseFeature->isDerivedFrom ( Part::BodyBase::getClassTypeId() ) )  {
                // Prevent creating bodies based on bodies
                QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                        QObject::tr("Body can't be based on another body."));
                baseFeature = nullptr;
            }
            else {
                partOfBaseFeature = App::Part::getPartOfObject(baseFeature);
                if (partOfBaseFeature != 0  &&  partOfBaseFeature != actPart){
                    //prevent cross-part mess
                    QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                            QObject::tr("Base feature (%1) belongs to other part.")
                                         .arg(QString::fromUtf8(baseFeature->Label.getValue())));
                    baseFeature = nullptr;
                };
            }

        } else {
            QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                QObject::tr("Body may be based no more than on one feature."));
            return;
        }
    }


    openCommand("Add a Body");

    std::string bodyName = getUniqueObjectName("Body");

    // add the Body feature itself, and make it active
    doCommand(Doc,"App.activeDocument().addObject('PartDesign::Body','%s')", bodyName.c_str());
    if (baseFeature) {
        if (partOfBaseFeature){
            //withdraw base feature from Part, otherwise visibility mandess results
            doCommand(Doc,"App.activeDocument().%s.removeObject(App.activeDocument().%s)",
                    partOfBaseFeature->getNameInDocument(), baseFeature->getNameInDocument());
        }
        doCommand(Doc,"App.activeDocument().%s.BaseFeature = App.activeDocument().%s",
                bodyName.c_str(), baseFeature->getNameInDocument());
    }
    addModule(Gui,"PartDesignGui"); // import the Gui module only once a session
    doCommand(Gui::Command::Gui, "Gui.activeView().setActiveObject('%s', App.activeDocument().%s)", 
            PDBODYKEY, bodyName.c_str());

    // Make the "Create sketch" prompt appear in the task panel
    doCommand(Gui,"Gui.Selection.clearSelection()");
    doCommand(Gui,"Gui.Selection.addSelection(App.ActiveDocument.%s)", bodyName.c_str());
    if (actPart) {
        doCommand(Doc,"App.activeDocument().%s.addObject(App.ActiveDocument.%s)",
                 actPart->getNameInDocument(), bodyName.c_str());
    }

    // The method 'SoCamera::viewBoundingBox' is still declared as protected in Coin3d versions
    // older than 4.0.
#if COIN_MAJOR_VERSION >= 4
    // if no part feature was there then auto-adjust the camera
    if (viewAll) {
        Gui::Document* doc = Gui::Application::Instance->getDocument(getDocument());
        Gui::View3DInventor* view = doc ? qobject_cast<Gui::View3DInventor*>(doc->getActiveView()) : nullptr;
        if (view) {
            SoCamera* camera = view->getViewer()->getCamera();
            SbViewportRegion vpregion = view->getViewer()->getViewportRegion();
            float aspectratio = vpregion.getViewportAspectRatio();

            float size = Gui::ViewProviderOrigin::defaultSize();
            SbBox3f bbox;
            bbox.setBounds(-size,-size,-size,size,size,size);
            camera->viewBoundingBox(bbox, aspectratio, 1.0f);
        }
    }
//.........这里部分代码省略.........