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Gabriele Cosmo
2016-06-08 15:28:20 +02:00
parent aaa409b6ee
commit ca1c8cb059
2995 changed files with 106830 additions and 299600 deletions
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source/visualization/management/include/G4ViewParameters.hh
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View File
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// This code implementation is the intellectual property of
// the RD44 GEANT4 collaboration.
// the GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4ViewParameters.hh,v 1.3 1999/05/25 09:14:09 johna Exp $
// GEANT4 tag $Name: geant4-00-01 $
// $Id: G4ViewParameters.hh,v 1.5.2.1 1999/12/07 20:53:52 gunter Exp $
// GEANT4 tag $Name: geant4-01-00 $
//
//
// John Allison 19th July 1996
//
// Class description
//
// View parameters and options.
//
// THE STANDARD VIEW AND ALL THAT.
//
// In GEANT4 visualization, we have the concept of a ``Standard
// View''. This is the view when the complete set of objects being
// viewed is comfortably in view from any viewpoint. It is defined by
// the ``Bounding Sphere'' of ``visible'' objects when initially
// registered in the scene, and by the View Parameters.
//
// There is also the ``Standard Target Point'', which is the centre of
// the Bounding Sphere (note that this belongs to the scene and is
// stored in the G4Scene object). The ``Current Target Point'', initially
// set to the Standard Target Point, is incremented by the ``dolly''
// and ``zoom'' commands, and can be reset to the Standard Target
// Point with the {\tt /vis~/camera/reset} command.
//
// Also, the ``Standard Camera Position'' is the ``Standard Camera
// Distance'' along the Viewpoint Direction vector from the Standard
// Target Point. The Standard Camera Distance is the radius of the
// Bounding Sphere divided by {\tt fFieldHalfAngle}. It is not stored
// explicitly because of the singularity at {\tt fFieldHalfAngle} = 0,
// which implies parallel projection.
//
// Similarly, the ``Current Camera Position'' is the ``Current Camera
// Distance'' along the Viewpoint Direction vector from the Current
// Target Point. The Current Camera Distance is given by the formulae
// below, but note that it can be negative, meaning that the camera
// has moved {\em beyond} the Current Target Point, which is
// conceptually possible, but which might give some problems when
// setting up the view matrix --- see, for example, {\tt
// G4OpenGLView::SetView ()}.
//
// All viewers are expected to keep the ``Up Vector'' vertical.
//
// Finally, the view is magnified by the ``Zoom Factor'' which is
// reset to 1 by the \linebreak {\tt /vis~/camera/reset} command.
//
// Note: the camera movements pan, dolly and zoom, are currently coded
// in \linebreak {\tt G4VisManMessenger.cc}.
//
// The algorithms for calculating various useful quantities from the
// View Parameters are encapsulated in the functions described in
// Appendix \ref{ap:useful}.
#ifndef G4VIEWPARAMETERS_HH
#define G4VIEWPARAMETERS_HH
#include <rw/tvordvec.h>
#include "g4rw/tvordvec.h"
#include "G4Vector3D.hh"
#include "G4Point3D.hh"
#include "G4Plane3D.hh"
#include "G4VisAttributes.hh"
#include "G4VMarker.hh"
typedef RWTValOrderedVector<G4Plane3D> G4Planes;
//. % THE STANDARD VIEW AND ALL THAT.
//.
//. In GEANT4 visualization, we have the concept of a ``Standard View''.
//. This is the view when the complete set of objects being viewed is
//. comfortably in view from any viewpoint. It is defined by the
//. ``Bounding Sphere'' of ``visible'' objects when initially registered
//. in the scene, and the View Parameters.
//.
//. There is also the ``Standard Target Point'', which is the centre
//. of the Bounding Sphere (note that these belong to the scene, and are
//. stored in the Scene Data). The ``Current Target Point'', initially
//. set to the Standard Target Point, is incremented by the
//. ``dolly'' and ``zoom'' commands, and can be reset to the
//. Standard Target Point with the {\tt /vis~/camera/reset} command.
//.
//. Also, the ``Standard Camera Position'' is the ``Standard Camera
//. Distance'' along
//. the Viewpoint Direction vector from the Standard Target Point.
//. The Standard Camera Distance is the radius of the
//. Bounding Sphere divided by {\tt fFieldHalfAngle}. It is not stored
//. explicitly because of the singularity at {\tt fFieldHalfAngle} = 0,
//. which implies parallel projection.
//.
//. Similarly, the ``Current Camera Position'' is the ``Current
//. Camera Distance''
//. along the Viewpoint Direction vector from the Current Target Point.
//. The Current Camera Distance is given by the formulae below, but
//. note that it can be negative, meaning that the camera has
//. moved {\em beyond} the Current Target Point, which is conceptually
//. possible, but which might give some problems when setting up
//. the view matrix --- see, for example, {\tt G4OpenGLView::SetView ()}.
//.
//. All views are expected to keep the ``Up Vector'' vertical.
//.
//. Finally, the view is magnified by the ``Zoom Factor'' which is
//. reset to 1 by the \linebreak
//. {\tt /vis~/camera/reset} command.
//.
//. Note: the camera movements pan, dolly and zoom, are currently coded in
//. \linebreak {\tt G4VisManMessenger.cc}.
//.
//. The algorithms for calculating various useful quantities from the
//. View Parameters are encapsulated in the functions described in
//. Appendix \ref{ap:useful}.
typedef G4RWTValOrderedVector<G4Plane3D> G4Planes;
class G4ViewParameters {
friend ostream& operator << (ostream& os, const G4ViewParameters& v);
public: // With description
public:
friend ostream& operator << (ostream& os, const G4ViewParameters& v);
enum DrawingStyle {
wireframe, // Draw edges - no hidden line removal.