Gabriele Cosmo
76 lines
3.2 KiB
C++
76 lines
3.2 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// Class Description:
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//
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// G4VUserVisAction is brought into effect by the command
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// /vis/scene/add/userAction. The vis manager instantiates a
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// G4CallbackModel when the vis action is registered, and adds
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// it to the scene. The pure virtual Draw() method
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// is invoked whenever the viewer needs to "visit the kernel", e.g.,
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// to remake its graphical database, if any, or simply to refresh the
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// screen. It is not intended to be called directly. It is called
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// via the operator() which is defined to satisfy the template
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// G4CallbackModel<G4VUserVisAction>.
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//
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// A concrete Draw() method would normally make use of the Draw() methods
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// of the vis manager, e.g:
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// G4VVisManager* pVisManager = G4VVisManager::GetConcreteInstance();
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// if (pVisManager) {
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// pVisManager->Draw(G4Box("box",2*cm,2*cm,2*cm),
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// G4VisAttributes(G4Colour(1,1,0)));
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// ...
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// but it can also use pointers fpSceneHandler and pMP that give it
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// direct access to the current scene handler and modeling parameters
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// for more advanced use.
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//
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// See the User Guide for Application Developers.
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#ifndef G4VUSERVISACTION_HH
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#define G4VUSERVISACTION_HH
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class G4VGraphicsScene;
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class G4ModelingParameters;
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class G4VUserVisAction
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{
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public: // With description
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G4VUserVisAction(): fpSceneHandler(nullptr), fpMP(nullptr) {}
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virtual ~G4VUserVisAction() {}
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void operator()(G4VGraphicsScene& scene, const G4ModelingParameters* pMP) {
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fpSceneHandler = &scene;
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fpMP = pMP;
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Draw();
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}
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protected:
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virtual void Draw() = 0;
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G4VGraphicsScene* fpSceneHandler;
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const G4ModelingParameters* fpMP;
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};
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#endif
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