VRS - The Virtual Rendering System

version 3.3

light.h

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 /**********************************************************************
 VRS - The Virtual Rendering System
 Copyright (C) 2001 Computer Graphics Systems Group at the 
 Hasso-Plattner-Institute, Potsdam, Germany.
 This library is free software; you can redistribute it and/or 
 modify it under the terms of the GNU Lesser General Public 
 License as published by the Free Software Foundation; either 
 version 2.1 of the License, or (at your option) any later version.
 This library is distributed in the hope that it will be useful, but 
 WITHOUT ANY WARRANTY; without even the implied warranty of 
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 See the GNU Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser+ General Public
 License along with this library; if not, write to the FreeSoftware 
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA.
 **********************************************************************/
// $Id: light.h 5257 2006-03-24 11:35:59Z baumann $
// $Date: 2006-03-24 12:35:59 +0100 (Fri, 24 Mar 2006) $
// $Revision: 5257 $
// $State$
// $Author: baumann $
//
// $Log$
// Revision 1.21  2006/03/24 11:35:59  baumann
// operator== added
//
// Revision 1.20  2005/01/03 01:43:08  klimetschek
// - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io
// - removed vrs.vcproj
// minor things:
// - added all glutexamples to vrs4glut.sln
// - fixed some problems in glutexamples
// - removed all project references from all VS projects (using solution wide project dependencies instead)
//
// Revision 1.19  2004/11/05 13:58:09  basch
// Class comment changed (Doxygen style)
//
// Revision 1.18  2004/03/12 16:28:38  baumann
// macros VRS_NAMESPACE_BEGIN/_END expanded and removed
//
// Revision 1.17  2004/01/19 11:43:57  baumann
// serialization mechanism improved
//
// Revision 1.16  2003/11/29 11:29:23  kirsch
// - added support for local poly attributes
// - removed PolyAttribute::switchDefault() and Attribute::rememberTransform()
// - renamed Engine::SwType: On/Off/All to Engine::SwitchType: ON/OFF/ALL
// - changed class hierarchy of TechniqueProcessor and Technique
// - GLCanvas::prepareRedisplay() / finishRedisplay() now push / pop standard attributes
//
// Revision 1.15  2003/11/07 14:19:24  kirsch
// removed leading underscore from include guards
//
// Revision 1.14  2003/07/23 17:04:49  baumann
// code cleanup (especially untabified)
//
// Revision 1.13  2003/06/05 13:21:39  kirsch
// removed obsolete shadow parameter from light
//
// Revision 1.12  2002/10/29 10:32:52  baumann
// macros VRS_CLASSNAME_* and VRS_IMPL_TYPEINFO_* removed
//
// Revision 1.11  2002/03/03 21:44:24  kosta
// VRS_TYPEINFO-macro rewritten
//
// Revision 1.10  2002/02/19 10:34:09  kosta
// undone all changes since 2002-02-15
//
// Revision 1.7  2002/02/05 07:48:25  kosta
// new persistency macros:
//     VRS_SERIALIZABLE(CLASS_NAME);
//     VRS_SERIALIZABLE_ABSTRACT_CLASS(CLASS_NAME);
//     VRS_SERIALIZABLE_NO_SO_CLASS(CLASS_NAME)
//
// Revision 1.6  2002/02/04 13:07:19  kosta
// VRS_SERIALIZABLE macros completely rewritten
//
// Revision 1.5  2002/01/15 16:25:54  kosta
// macros rewritten for a better namespace support
//
// Revision 1.4  2001/11/13 16:36:30  kirsch
// changed line feed to unix style (removed control-M)
//
// Revision 1.3  2001/08/24 13:12:36  kirsch
// light sources are now turned on by default
//
// Revision 1.2  2001/07/26 15:23:22  kirsch
// enhanced engine to support rendering techniques
//
// Revision 1.1.1.1  2001/06/08 08:09:20  kirsch
// imported alpha-version by olli 
//


#ifndef VRS_LIGHT_H
#define VRS_LIGHT_H

#include <vrs/color.h>
#include <vrs/polyattribute.h>

namespace VRS {

class VRS_CORE_API Light : public PolyAttribute {

public:
    Light(
        const Color& ambient = Color(0.1,0.1,0.1),
        const Color& diffuse = Color(1.0,1.0,1.0),
        const Color& specular = Color(0.0,0.0,0.0),
        double ambientI = 1.0,
        double diffuseI = 1.0,
        double specularI = 1.0
    );
    bool operator==(const Light& other) const;

    virtual ID category() const;
    void setAmbientColor(const Color&);
    void setAmbientIntensity(double);
    Color getAmbientColor() const;
    double getAmbientIntensity() const;

    void setDiffuseColor(const Color&);
    void setDiffuseIntensity(double);
    Color getDiffuseColor() const;
    double getDiffuseIntensity() const;

    void setSpecularColor(const Color&);
    void setSpecularIntensity(double);
    Color getSpecularColor() const;
    double getSpecularIntensity() const;

    virtual bool switchDefault() const;

    VRS_TYPEINFO(Light, PolyAttribute);
    VRS_SERIALIZABLE(Light);

private:
    double ambientI_;
    double diffuseI_;
    double specularI_;
    Color ambientC_;
    Color diffuseC_;
    Color specularC_;
};

inline Color Light::getAmbientColor() const { return ambientC_; }
inline Color Light::getDiffuseColor() const { return diffuseC_; }
inline Color Light::getSpecularColor() const { return specularC_; }
inline double Light::getAmbientIntensity() const { return ambientI_; }
inline double Light::getDiffuseIntensity() const { return diffuseI_; }
inline double Light::getSpecularIntensity() const { return specularI_; }

} // namespace VRS

#endif // VRS_LIGHT_H

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