/usr/include/osgParticle/Interpolator is in libopenscenegraph-dev 3.2.0~rc1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
//osgParticle - Copyright (C) 2002 Marco Jez
#ifndef OSGPARTICLE_INTERPOLATOR
#define OSGPARTICLE_INTERPOLATOR
#include <osgParticle/range>
#include <osg/CopyOp>
#include <osg/Object>
#include <osg/Vec2>
#include <osg/Vec3>
#include <osg/Vec4>
namespace osgParticle
{
/// An abstract base class for implementing interpolators.
class Interpolator : public osg::Object {
public:
Interpolator()
: osg::Object() {}
Interpolator(const Interpolator& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY)
: osg::Object(copy, copyop) {}
virtual const char* libraryName() const { return "osgParticle"; }
virtual const char* className() const { return "Interpolator"; }
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Interpolator* >(obj) != 0; }
/// Interpolate between floats. Must be overriden in descendant classes.
virtual float interpolate(float t, float y1, float y2) const = 0;
/// Interpolate between 2-dimensional vectors. Default behavior is to interpolate each component separately.
virtual osg::Vec2 interpolate(float t, const osg::Vec2& y1, const osg::Vec2& y2) const
{
return osg::Vec2(
interpolate(t, y1.x(), y2.x()),
interpolate(t, y1.y(), y2.y())
);
}
/// Interpolate between 3-dimensional vectors. Default behavior is to interpolate each component separately.
virtual osg::Vec3 interpolate(float t, const osg::Vec3& y1, const osg::Vec3& y2) const
{
return osg::Vec3(
interpolate(t, y1.x(), y2.x()),
interpolate(t, y1.y(), y2.y()),
interpolate(t, y1.z(), y2.z())
);
}
/// Interpolate between 4-dimensional vectors. Default behavior is to interpolate each component separately.
virtual osg::Vec4 interpolate(float t, const osg::Vec4& y1, const osg::Vec4& y2) const
{
return osg::Vec4(
interpolate(t, y1.x(), y2.x()),
interpolate(t, y1.y(), y2.y()),
interpolate(t, y1.z(), y2.z()),
interpolate(t, y1.w(), y2.w())
);
}
template<class ValueType>
ValueType interpolate(float t, const range<ValueType>& r) const
{
return interpolate(t, r.minimum, r.maximum);
}
protected:
virtual ~Interpolator() {}
};
}
#endif
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