42 lines
1.0 KiB
Plaintext
42 lines
1.0 KiB
Plaintext
//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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//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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public:
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LinearInterpolator()
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: Interpolator() {}
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LinearInterpolator(const LinearInterpolator ©, const osg::CopyOp ©op = 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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