Gabriele Cosmo
104 lines
4.4 KiB
C++
104 lines
4.4 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4Colour.hh,v 1.9 2003/09/18 11:03:11 johna Exp $
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// GEANT4 tag $Name: geant4-06-00-patch-01 $
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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 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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// 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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class G4Colour {
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friend std::ostream& operator << (std::ostream& os, const G4Colour& c);
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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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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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private:
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G4double red, green, blue, alpha;
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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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#endif
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