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93 lines
3.2 KiB
93 lines
3.2 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2004 Robert Osfield |
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* |
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* This library is open source and may be redistributed and/or modified under |
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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* (at your option) any later version. The full license is in LICENSE file |
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* included with this distribution, and on the openscenegraph.org website. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* OpenSceneGraph Public License for more details. |
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*/ |
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#ifndef OSG_LIGHTSOURCE |
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#define OSG_LIGHTSOURCE 1 |
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#include <osg/NodeVisitor> |
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#include <osg/Light> |
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#include <osg/Group> |
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namespace osg { |
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/** Leaf Node for defining a light in the scene. */ |
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class OSG_EXPORT LightSource : public Group |
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{ |
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public: |
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LightSource(); |
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */ |
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LightSource(const LightSource& ls, |
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const CopyOp& copyop=CopyOp::SHALLOW_COPY): |
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Group(ls,copyop), |
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_value(ls._value), |
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_light(dynamic_cast<osg::Light*>(copyop(ls._light.get()))), |
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_referenceFrame(ls._referenceFrame) {} |
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META_Node(osg, LightSource); |
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enum ReferenceFrame |
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{ |
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RELATIVE_RF, |
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ABSOLUTE_RF |
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}; |
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/** Set the light sources's ReferenceFrame, either to be relative to its |
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* parent reference frame, or relative to an absolute coordinate |
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* frame. RELATIVE_RF is the default. |
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* Note: setting the ReferenceFrame to be ABSOLUTE_RF will |
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* also set the CullingActive flag on the light source, and hence all |
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* of its parents, to false, thereby disabling culling of it and |
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* all its parents. This is necessary to prevent inappropriate |
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* culling, but may impact cull times if the absolute light source is |
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* deep in the scene graph. It is therefore recommended to only use |
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* absolute light source at the top of the scene. |
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*/ |
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void setReferenceFrame(ReferenceFrame rf); |
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ReferenceFrame getReferenceFrame() const { return _referenceFrame; } |
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/** Set the attached light. */ |
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void setLight(Light* light); |
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/** Get the attached light. */ |
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inline Light* getLight() { return _light.get(); } |
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/** Get the const attached light. */ |
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inline const Light* getLight() const { return _light.get(); } |
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/** Set the GLModes on StateSet associated with the LightSource. */ |
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void setStateSetModes(StateSet&,StateAttribute::GLModeValue) const; |
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/** Set up the local StateSet. */ |
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void setLocalStateSetModes(StateAttribute::GLModeValue value = StateAttribute::ON); |
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/** Set whether to use a mutex to ensure ref() and unref() are thread safe.*/ |
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virtual void setThreadSafeRefUnref(bool threadSafe); |
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virtual BoundingSphere computeBound() const; |
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protected: |
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virtual ~LightSource(); |
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StateAttribute::GLModeValue _value; |
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ref_ptr<Light> _light; |
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ReferenceFrame _referenceFrame; |
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}; |
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} |
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#endif
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