FGFS-4.1/OpenSceneGraph
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From Wang Rui, "I've changed it back to _alive, _current_size and _current_alpha, and placed them one by one for setTexCoordPointer() to use.

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All size() methods are now renamed to volume(). At present only the CompositePlacer will use it for randomly choose a place according to the volumes of all children.
 "
This commit is contained in:
Robert Osfield
2010-09-15 09:24:45 +00:00
parent b4789863ac
commit 0259a340fd
9 changed files with 36 additions and 37 deletions
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4
include/osgParticle/BoxPlacer
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@@ -71,7 +71,7 @@ namespace osgParticle
inline void place(Particle* P) const;
/// return the volume of the box
inline float size() const;
inline float volume() const;
/// return the control position
inline osg::Vec3 getControlPosition() const;
@@ -157,7 +157,7 @@ namespace osgParticle
P->setPosition(pos);
}
inline float BoxPlacer::size() const
inline float BoxPlacer::volume() const
{
return (_x_range.maximum - _x_range.minimum) *
(_y_range.maximum - _y_range.minimum) *

10
include/osgParticle/CompositePlacer
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@@ -58,7 +58,7 @@ public:
inline void place( Particle* P ) const;
/// return the volume of the box
inline float size() const;
inline float volume() const;
/// return the control position
inline osg::Vec3 getControlPosition() const;
@@ -75,20 +75,20 @@ protected:
inline void CompositePlacer::place( Particle* P ) const
{
rangef sizeRange( 0.0f, size() );
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)->size();
current += (*itr)->volume();
if ( selected<=current ) (*itr)->place( P );
}
}
inline float CompositePlacer::size() const
inline float CompositePlacer::volume() const
{
float total_size = 0.0f;
for ( PlacerList::const_iterator itr=_placers.begin(); itr!=_placers.end(); ++itr )
total_size += (*itr)->size();
total_size += (*itr)->volume();
return total_size;
}

4
include/osgParticle/MultiSegmentPlacer
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@@ -65,7 +65,7 @@ namespace osgParticle {
void place(Particle* P) const;
/// return the length of the multi-segment
inline float size() const;
inline float volume() const;
/// return the control position
inline osg::Vec3 getControlPosition() const;
@@ -130,7 +130,7 @@ namespace osgParticle {
recompute_length();
}
inline float MultiSegmentPlacer::size() const
inline float MultiSegmentPlacer::volume() const
{
return _total_length;
}

12
include/osgParticle/Particle
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@@ -142,7 +142,7 @@ namespace osgParticle
inline const osg::Vec4& getCurrentColor() const { return _current_color; }
/// Get the current alpha
inline float getCurrentAlpha() const { return _base_prop.z(); }
inline float getCurrentAlpha() const { return _current_alpha; }
/// Get the s texture coordinate of the bottom left of the particle
inline float getSTexCoord() const { return _s_coord; }
@@ -302,7 +302,6 @@ namespace osgParticle
osg::ref_ptr<Interpolator> _ai;
osg::ref_ptr<Interpolator> _ci;
//bool _alive;
bool _mustdie;
double _lifeTime;
@@ -319,8 +318,9 @@ namespace osgParticle
double _t0;
//float _current_size;
//float _current_alpha;
float _alive;
float _current_size;
float _current_alpha;
osg::Vec3 _base_prop; // [0] _alive [1] _current_size [2] _current_alpha
osg::Vec4 _current_color;
@@ -357,7 +357,7 @@ namespace osgParticle
inline bool Particle::isAlive() const
{
return _base_prop.x()>0.0;
return _alive>0.0f;
}
inline double Particle::getLifeTime() const
@@ -597,7 +597,7 @@ namespace osgParticle
inline float Particle::getCurrentSize() const
{
return _base_prop.y();
return _current_size;
}

4
include/osgParticle/Placer
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@@ -40,8 +40,8 @@ namespace osgParticle
/// Place a particle. Must be implemented in descendant classes.
virtual void place(Particle* P) const = 0;
/// Size of the placer. Can be implemented in descendant classes.
virtual float size() const { return 1.0f; }
/// Volume of the placer. Can be implemented in descendant classes.
virtual float volume() const { return 1.0f; }
/// Return the control position of particles that placer will generate. Must be implemented in descendant classes.
virtual osg::Vec3 getControlPosition() const = 0;

4
include/osgParticle/SectorPlacer
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@@ -62,7 +62,7 @@ namespace osgParticle
inline void place(Particle* P) const;
/// return the area of the sector
inline float size() const;
inline float volume() const;
/// return the control position
inline osg::Vec3 getControlPosition() const;
@@ -133,7 +133,7 @@ namespace osgParticle
P->setPosition(pos);
}
inline float SectorPlacer::size() const
inline float SectorPlacer::volume() const
{
return 0.5f * (_phi_range.maximum - _phi_range.minimum) *
(_rad_range.maximum*_rad_range.maximum - _rad_range.minimum*_rad_range.minimum);

4
include/osgParticle/SegmentPlacer
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@@ -61,7 +61,7 @@ namespace osgParticle {
inline void place(Particle* P) const;
/// return the length of the segment
inline float size() const;
inline float volume() const;
/// return the control position
inline osg::Vec3 getControlPosition() const;
@@ -108,7 +108,7 @@ namespace osgParticle {
P->setPosition(rangev3(_vertexA, _vertexB).get_random());
}
inline float SegmentPlacer::size() const
inline float SegmentPlacer::volume() const
{
return (_vertexB - _vertexA).length();
}