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63 lines
1.7 KiB
63 lines
1.7 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 OSGTEXT_FADETEXT |
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#define OSGTEXT_FADETEXT 1 |
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#include <osgText/Text> |
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namespace osgText { |
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class OSGTEXT_EXPORT FadeText : public osgText::Text |
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{ |
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public: |
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FadeText(); |
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FadeText(const Text& text,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY); |
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META_Object(osgText,FadeText) |
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/** Set the speed that the alpha value changes as the text is occluded or becomes visible.*/ |
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void setFadeSpeed(float fadeSpeed) { _fadeSpeed = fadeSpeed; } |
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/** Get the speed that the alpha value changes.*/ |
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float getFadeSpeed() const { return _fadeSpeed; } |
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/** Draw the text.*/ |
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virtual void drawImplementation(osg::RenderInfo& renderInfo) const; |
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protected: |
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virtual ~FadeText() {} |
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void init(); |
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struct FadeTextUpdateCallback; |
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friend struct FadeTextUpdateCallback; |
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typedef std::map<osg::View*, osg::Vec4 > ViewBlendColourMap; |
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ViewBlendColourMap& getViewBlendColourMap() { return _viewBlendColourMap; } |
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const ViewBlendColourMap& getViewBlendColourMap() const { return _viewBlendColourMap; } |
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float _fadeSpeed; |
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mutable ViewBlendColourMap _viewBlendColourMap; |
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}; |
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} |
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#endif
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