Gabriele Cosmo
167 lines
7.0 KiB
C++
167 lines
7.0 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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//
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//
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// John Allison 20th October 1996
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// Class Description:
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// Class G4Colour has 4 fields, which represent the RGBA (red, green, blue,
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// and alpha) components of colour. Each component takes a value between
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// 0 and 1. If an irrelevant value, i.e., a value less than 0 or greater
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// than 1, is given as an argument of the constructor, such a value is
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// automatically clipped to 0 or 1. Alpha is opacity (1 = opaque).
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//
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// A G4Colour object is instantiated by giving red, green, and blue
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// components to its constructor, i.e.,
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//
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// G4Colour::G4Colour ( G4double r = 1.0,
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// G4double g = 1.0,
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// G4double b = 1.0,
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// G4double a = 1.0);
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// // 0<=red, green, blue <= 1.0
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//
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// The default value of each component is 1.0. That is to say, the default
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// colour is "white". For example, colours which are often used can be
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// instantiated as follows:
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//
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// G4Colour white () ; // white
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// G4Colour white (1.0, 1.0, 1.0) ; // white
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// G4Colour gray (0.5, 0.5, 0.5) ; // gray
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// G4Colour black (0.0, 0.0, 0.0) ; // black
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// G4Colour brown (0.45,0.25,0.0) ; // G4 logo brown
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// G4Colour red (1.0, 0.0, 0.0) ; // red
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// G4Colour green (0.0, 1.0, 0.0) ; // green
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// G4Colour blue (0.0, 0.0, 1.0) ; // blue
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// G4Colour cyan (0.0, 1.0, 1.0) ; // cyan
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// G4Colour magenta (1.0, 0.0, 1.0) ; // magenta
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// G4Colour yellow (1.0, 1.0, 0.0) ; // yellow
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//
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// For convenience, static member functions are also defined for the above colours.
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//
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// After instantiation of a G4Colour object, you can access to its components
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// with the following access functions:
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//
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// G4double G4Colour::GetRed () const ; // Get the red component.
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// G4double G4Colour::GetGreen () const ; // Get the green component.
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// G4double G4Colour::GetBlue () const ; // Get the blue component.
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//
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// Class Description - End:
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#ifndef G4COLOUR_HH
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#define G4COLOUR_HH
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#include "globals.hh"
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#include "G4ThreeVector.hh"
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#include <iostream>
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#include <map>
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class G4Colour {
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friend std::ostream& operator << (std::ostream&, const G4Colour&);
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public: // With description
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G4Colour (G4double r = 1., G4double g = 1., G4double b = 1.,
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G4double a = 1.);
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G4Colour (G4ThreeVector);
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// Converts the components of the 3-vector into red, green, blue.
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// The opacity, alpha = 1.
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operator G4ThreeVector();
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// Converts red, green, blue into the components of a 3-vector.
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G4bool operator != (const G4Colour& c) const;
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G4bool operator == (const G4Colour& c) const {return !(operator != (c));}
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G4Colour& operator += (const G4Colour& rhs) {*this = rhs; return *this;}
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// Note: This is required by RayTracer in its use of G4THitsMap.
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// Adding colours, without also taking brightness into account, does not make
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// sense, so let us make it synonymous with operator=, which is, I guess,
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// equivalent to covering the old colour with the new, like a coat of paint.
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G4double GetRed () const;
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G4double GetGreen () const;
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G4double GetBlue () const;
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G4double GetAlpha () const; // alpha = opacity = 1. - transparency.
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void SetRed (G4double);
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void SetGreen (G4double);
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void SetBlue (G4double);
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void SetAlpha (G4double); // alpha = opacity = 1. - transparency.
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static G4Colour White();
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static G4Colour Gray();
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static G4Colour Grey();
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static G4Colour Black();
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static G4Colour Brown(); // G4 logo brown
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static G4Colour Red();
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static G4Colour Green();
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static G4Colour Blue();
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static G4Colour Cyan();
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static G4Colour Magenta();
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static G4Colour Yellow();
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static G4bool GetColour(const G4String& key, G4Colour& result);
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// Get colour for given key, placing it in result.
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// The key is usually the name of the colour.
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// The key is not case sensitive.
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// Returns false if key doesn't exist, leaving result unchanged.
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static void AddToMap(const G4String& key, const G4Colour& colour);
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// Add user defined colour to colour map with given key. Standard
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// colours are added to map by default.
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static void InitialiseColourMap();
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static const std::map<G4String, G4Colour>& GetMap();
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private:
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G4double red, green, blue, alpha;
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static std::map<G4String, G4Colour> fColourMap;
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static G4bool fInitColourMap;
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};
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inline G4double G4Colour::GetRed () const {return red;}
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inline G4double G4Colour::GetGreen () const {return green;}
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inline G4double G4Colour::GetBlue () const {return blue;}
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inline G4double G4Colour::GetAlpha () const {return alpha;}
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inline G4Colour G4Colour::White() {return G4Colour(1.0, 1.0, 1.0);}
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inline G4Colour G4Colour::Gray() {return G4Colour(0.5, 0.5, 0.5);}
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inline G4Colour G4Colour::Grey() {return G4Colour(0.5, 0.5, 0.5);}
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inline G4Colour G4Colour::Black() {return G4Colour(0.0, 0.0, 0.0);}
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inline G4Colour G4Colour::Brown() {return G4Colour(0.45,0.25,0.0);}
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inline G4Colour G4Colour::Red() {return G4Colour(1.0, 0.0, 0.0);}
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inline G4Colour G4Colour::Green() {return G4Colour(0.0, 1.0, 0.0);}
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inline G4Colour G4Colour::Blue() {return G4Colour(0.0, 0.0, 1.0);}
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inline G4Colour G4Colour::Cyan() {return G4Colour(0.0, 1.0, 1.0);}
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inline G4Colour G4Colour::Magenta() {return G4Colour(1.0, 0.0, 1.0);}
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inline G4Colour G4Colour::Yellow() {return G4Colour(1.0, 1.0, 0.0);}
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#endif
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