/usr/include/osgParticle/CompositePlacer is in libopenscenegraph-dev 3.2.1-6.
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 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2010 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.
*/
// Written by Wang Rui, (C) 2010
#ifndef OSGPARTICLE_COMPOSITEPLACER
#define OSGPARTICLE_COMPOSITEPLACER
#include <osgParticle/Placer>
#include <osgParticle/Particle>
namespace osgParticle
{
/** A composite particle placer which allows particles to be generated from a union of placers. */
class CompositePlacer : public Placer
{
public:
CompositePlacer() : Placer() {}
CompositePlacer( const CompositePlacer& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY )
: Placer(copy, copyop), _placers(copy._placers) {}
META_Object( osgParticle, CompositePlacer );
// Set a child placer at specific index
void setPlacer( unsigned int i, Placer* p )
{
if (i<_placers.size()) _placers[i] = p;
else addPlacer(p);
}
/// Add a child placer
void addPlacer( Placer* p ) { _placers.push_back(p); }
/// Remove a child placer
void removePlacer( unsigned int i )
{ if (i<_placers.size()) _placers.erase(_placers.begin()+i); }
/// Get a child placer
Placer* getPlacer( unsigned int i ) { return _placers[i].get(); }
const Placer* getPlacer( unsigned int i ) const { return _placers[i].get(); }
/// Get number of placers
unsigned int getNumPlacers() const { return _placers.size(); }
/// Place a particle. Do not call it manually.
inline void place( Particle* P ) const;
/// return the volume of the box
inline float volume() const;
/// return the control position
inline osg::Vec3 getControlPosition() const;
protected:
virtual ~CompositePlacer() {}
CompositePlacer& operator=( const CompositePlacer& ) { return *this; }
typedef std::vector< osg::ref_ptr<Placer> > PlacerList;
PlacerList _placers;
};
// INLINE METHODS
inline void CompositePlacer::place( Particle* P ) const
{
rangef sizeRange( 0.0f, volume() );
float current = 0.0f, selected = sizeRange.get_random();
for ( PlacerList::const_iterator itr=_placers.begin(); itr!=_placers.end(); ++itr )
{
current += (*itr)->volume();
if ( selected<=current ) (*itr)->place( P );
}
}
inline float CompositePlacer::volume() const
{
float total_size = 0.0f;
for ( PlacerList::const_iterator itr=_placers.begin(); itr!=_placers.end(); ++itr )
total_size += (*itr)->volume();
return total_size;
}
inline osg::Vec3 CompositePlacer::getControlPosition() const
{
if ( !_placers.size() ) return osg::Vec3();
return _placers.front()->getControlPosition();
}
}
#endif
|