82 lines
2.5 KiB
Plaintext
82 lines
2.5 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2008-2012 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTH_PHONG_LIGHTING_EFFECT_H
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#define OSGEARTH_PHONG_LIGHTING_EFFECT_H
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#include <osgEarth/Common>
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#include <osg/StateSet>
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#include <osg/Uniform>
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#include <osg/observer_ptr>
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#include <osg/Group>
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namespace osgEarth { namespace Util
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{
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/**
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* Shader effect that performs simple Phong lighting.
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*/
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class OSGEARTH_EXPORT PhongLightingEffect : public osg::Referenced
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{
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public:
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/** constructs a new effect */
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PhongLightingEffect();
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/** contructs a new effect and attaches it to a stateset. */
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PhongLightingEffect(osg::StateSet* stateset);
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/** is it supported by the h/w? */
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bool supported() const { return _supported; }
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public:
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/** attach this effect to a stateset. */
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void attach(osg::StateSet* stateset);
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/** detach this effect from any attached statesets. */
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void detach();
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/** detach this effect from a stateset. */
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void detach(osg::StateSet* stateset);
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protected:
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virtual ~PhongLightingEffect();
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typedef std::list< osg::observer_ptr<osg::StateSet> > StateSetList;
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bool _supported;
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StateSetList _statesets;
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//osg::ref_ptr<osg::Uniform> _lightingUniform;
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void init();
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};
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class OSGEARTH_EXPORT PhongLightingGroup : public osg::Group
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{
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public:
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PhongLightingGroup();
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private:
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osg::ref_ptr< PhongLightingEffect> _effect;
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};
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} } // namespace osgEarth::Util
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#endif // OSGEARTH_PHONG_LIGHTING_EFFECT_H
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