60 lines
2.0 KiB
Plaintext
60 lines
2.0 KiB
Plaintext
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//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSG_CLEARNODE
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#define OSG_CLEARNODE 1
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#include <osg/Group>
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#include <osg/Vec4>
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namespace osg {
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/** ClearNode is a Group node which controls the clearing of the color and depth
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* buffers at the start of each frame.
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* The earth sky by default is empty and simply holds the clear color of
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* the background. However, if the uses wants to add their own clearing of
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* the color and depth buffers then the children can be added, and the
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* background clear turned off. The ClearNode by default has StateSet attached
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* to it which sets the default ClearNode bin number to -1, so that all drawables
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* below it are placed in a separate bin from the rest of the scene graph, and
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* are rendered prior to standard opaque and transparent drawables.
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*/
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class SG_EXPORT ClearNode : public Group
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{
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public :
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ClearNode();
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ClearNode(const ClearNode& es, const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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Group(es,copyop),
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_requiresClear(es._requiresClear),
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_clearColor(es._clearColor) {}
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META_Node(osg, ClearNode);
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/** Sets the flag which control whether a glClear is required at the beginning of each frame. */
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inline void setRequiresClear(const bool requiresClear) { _requiresClear = requiresClear; }
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/** Gets the flag which control whether a glClear is required at the beginning of each frame. */
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inline const bool getRequiresClear() const { return _requiresClear; }
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/** Sets the clear color. */
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inline void setClearColor(const Vec4& color) { _clearColor = color; }
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/** Returns the clear color. */
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inline const Vec4& getClearColor() const { return _clearColor; }
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protected :
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virtual ~ClearNode() {}
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bool _requiresClear;
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Vec4 _clearColor;
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};
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}
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#endif
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