root/OpenSceneGraph/trunk/include/osg/LightModel @ 13041

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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version.  The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * OpenSceneGraph Public License for more details.
12*/
13
14#ifndef OSG_LIGHTMODEL
15#define OSG_LIGHTMODEL 1
16
17#include <osg/StateAttribute>
18#include <osg/Vec4>
19
20namespace osg {
21
22class OSG_EXPORT LightModel : public StateAttribute
23{
24    public :
25
26        LightModel();
27
28        /** Copy constructor using CopyOp to manage deep vs shallow copy. */
29        LightModel(const LightModel& lw,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
30          StateAttribute(lw,copyop),
31          _ambient(lw._ambient),
32          _colorControl(lw._colorControl),
33          _localViewer(lw._localViewer),
34          _twoSided(lw._twoSided) {}
35
36
37        META_StateAttribute(osg, LightModel, LIGHTMODEL);
38
39        /** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
40        virtual int compare(const StateAttribute& sa) const
41        {
42            // check the types are equal and then create the rhs variable
43            // used by the COMPARE_StateAttribute_Parameter macros below.
44            COMPARE_StateAttribute_Types(LightModel,sa)
45
46            // compare each parameter in turn against the rhs.
47            COMPARE_StateAttribute_Parameter(_ambient)
48            COMPARE_StateAttribute_Parameter(_colorControl)
49            COMPARE_StateAttribute_Parameter(_localViewer)
50            COMPARE_StateAttribute_Parameter(_twoSided)
51
52            return 0; // passed all the above comparison macros, must be equal.
53        }
54
55
56        void setAmbientIntensity(const osg::Vec4& ambient) { _ambient = ambient; }
57        const osg::Vec4& getAmbientIntensity() const { return _ambient; }
58
59
60        enum ColorControl
61        {
62            SEPARATE_SPECULAR_COLOR,
63            SINGLE_COLOR
64        };
65
66        void setColorControl(ColorControl cc) { _colorControl = cc; }
67        inline ColorControl getColorControl() const { return _colorControl; }
68
69
70        void setLocalViewer(bool localViewer) { _localViewer=localViewer; }
71        inline bool getLocalViewer() const { return _localViewer; }
72
73
74        void setTwoSided(bool twoSided) { _twoSided = twoSided; }
75        inline bool getTwoSided() const { return _twoSided; }
76
77
78
79        virtual void apply(State& state) const;
80
81
82    protected :
83
84        virtual ~LightModel();
85
86        osg::Vec4 _ambient;
87        ColorControl _colorControl;
88        bool _localViewer;
89        bool _twoSided;
90
91};
92
93}
94
95#endif
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