42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
/* -*-c++-*-
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* Copyright (C) 2009 Cedric Pinson <cedric.pinson@plopbyte.net>
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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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#include <osgAnimation/ActionBlendOut>
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using namespace osgAnimation;
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ActionBlendOut::ActionBlendOut() : _weight(0) {}
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ActionBlendOut::ActionBlendOut(const ActionBlendOut& a, const osg::CopyOp& c) : Action(a,c)
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{
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_weight = a._weight;
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_animation = a._animation;
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}
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ActionBlendOut::ActionBlendOut(Animation* animation, double duration)
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{
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_animation = animation;
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float d = duration * _fps;
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setNumFrames(static_cast<unsigned int>(floor(d) + 1));
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_weight = 1.0;
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setName("BlendOut");
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}
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void ActionBlendOut::computeWeight(unsigned int frame)
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{
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double ratio = ( (frame+1) * 1.0 / (getNumFrames()) );
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double w = _weight * (1.0-ratio);
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OSG_DEBUG << getName() << " BlendOut frame " << frame << " weight " << w << std::endl;
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_animation->setWeight(w);
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}
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