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geant4/source/visualization/OpenGL/include/G4OpenGLBitMapStore.hh
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2016-06-09 16:15:05 +02:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
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// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
//
// $Id: G4OpenGLBitMapStore.hh,v 1.4 2009/04/08 15:15:07 lgarnier Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
//
// John Allison 6th January 2007
//
// Class description
//
// Keeps bit maps on byte boundaries suitable for drawing. For
// example, in OpenGL:
//
// const char* circle = G4OpenGLBitMapStore::GetCircle(size, true);
// glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
// glBitmap(size, size, size/2., size/2., 0., 0., circle);
#ifdef G4VIS_BUILD_OPENGL_DRIVER
#ifndef G4OPENGLBITMAPSTORE_HH
#define G4OPENGLBITMAPSTORE_HH
#include "globals.hh"
#include <map>
#include "G4OpenGL.hh"
#include <GL/gl.h>
#include <GL/glu.h>
namespace G4OpenGLBitMapStore {
enum Shape {circle, square};
const GLubyte* GetBitMap(Shape, G4double& size, G4bool filled);
// Size in pixels (gets changed to a rationalised value).
struct Key{
Key(Shape shape, G4int size, G4bool filled):
fShape(shape), fSize(size), fFilled(filled) {}
bool operator<(const Key& rhs) const {
if (fShape < rhs.fShape) return true;
else if (fSize < rhs.fSize) return true;
else if (fFilled != rhs.fFilled) return true;
else return false;
}
Shape fShape;
G4int fSize;
G4bool fFilled;
};
extern std::map<Key, GLubyte*> fStore;
}
#endif
#endif