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52 lines
1.5 KiB
52 lines
1.5 KiB
14 years ago
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/* -*-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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//osgParticle - Copyright (C) 2002 Marco Jez
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#ifndef OSGPARTICLE_LINEARINTERPOLATOR
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#define OSGPARTICLE_LINEARINTERPOLATOR
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#include <osgParticle/Interpolator>
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#include <osg/CopyOp>
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#include <osg/Object>
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#include <osg/Vec3>
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#include <osg/Vec4>
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namespace osgParticle
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{
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/// A linear interpolator.
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class LinearInterpolator: public Interpolator
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{
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public:
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LinearInterpolator()
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: Interpolator() {}
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LinearInterpolator(const LinearInterpolator& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY)
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: Interpolator(copy, copyop) {}
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META_Object(osgParticle, LinearInterpolator);
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virtual float interpolate(float t, float y1, float y2) const
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{
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return y1 + (y2 - y1) * t;
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}
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protected:
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virtual ~LinearInterpolator() {}
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};
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}
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#endif
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