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51 lines
1.5 KiB
51 lines
1.5 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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//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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