FGFS-4.1/OpenSceneGraph
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Implemented seemless update of precipitation properties.

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This commit is contained in:
Robert Osfield
2006-04-25 12:39:00 +00:00
parent 6558a5589f
commit 039457700d
3 changed files with 112 additions and 170 deletions
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63
include/osgParticle/PrecipitationEffect
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@@ -25,7 +25,7 @@
namespace osgParticle
{
class OSGPARTICLE_EXPORT PrecipitationEffect : public osg::Group
class OSGPARTICLE_EXPORT PrecipitationEffect : public osg::Node
{
public:
@@ -45,12 +45,8 @@ namespace osgParticle
/** Set all the parameters to create an snow effect of specified intensity.*/
void snow(float intensity);
void setIntensity(float intensity) { _intensity = intensity; }
float getIntensity() const { return _intensity; }
void setMaximumParticleDensity(float density) { _maximumParticleDensity = density; }
void setMaximumParticleDensity(float density) { if (_maximumParticleDensity==density) return; _maximumParticleDensity = density; _dirty = true;}
float setMaximumParticleDensity() const { return _maximumParticleDensity; }
void setWind(const osg::Vec3& wind) { _wind = wind; }
@@ -59,16 +55,16 @@ namespace osgParticle
void setPosition(const osg::Vec3& position) { _origin = position; }
const osg::Vec3& getPosition() const { return _origin; }
void setCellSize(const osg::Vec3& cellSize) { _cellSize = cellSize; }
void setCellSize(const osg::Vec3& cellSize) { if (_cellSize==cellSize) return; _cellSize = cellSize; _dirty = true; }
const osg::Vec3& getCellSize() const { return _cellSize; }
void setParticleSpeed(float particleSpeed) { _particleSpeed = particleSpeed; }
void setParticleSpeed(float particleSpeed) { if (_particleSpeed==particleSpeed) return; _particleSpeed = particleSpeed; _dirty = true; }
float getParticleSpeed() const { return _particleSpeed; }
void setParticleSize(float particleSize) { _particleSize = particleSize; }
void setParticleSize(float particleSize) { if (_particleSize==particleSize) return; _particleSize = particleSize; _dirty = true;}
float getParticleSize() const { return _particleSize; }
void setParticleColor(const osg::Vec4& color) { _particleColor = color; }
void setParticleColor(const osg::Vec4& color) { if (_particleColor==color) return; _particleColor = color; _dirty = true;}
const osg::Vec4& getParticleColor() const { return _particleColor; }
void setNearTransition(float nearTransition) { _nearTransition = nearTransition; }
@@ -81,14 +77,19 @@ namespace osgParticle
osg::Fog* getFog() { return _fog.get(); }
const osg::Fog* getFog() const { return _fog.get(); }
void compileGLObjects(osg::State& state) const;
osg::Geometry* getQuadGeometry() { return _quadGeometry.get(); }
osg::StateSet* getQuadStateSet() { return _quadStateSet.get(); }
void update();
protected:
virtual ~PrecipitationEffect() {}
void compileGLObjects(osg::State& state) const;
void update();
void createGeometry(unsigned int numParticles,
osg::Geometry* quad_geometry,
osg::Geometry* line_geometry,
@@ -116,6 +117,12 @@ namespace osgParticle
void setGeometry(osg::Geometry* geom) { _geometry = geom; }
osg::Geometry* getGeometry() { return _geometry.get(); }
const osg::Geometry* getGeometry() const { return _geometry.get(); }
void setDrawType(GLenum type) { _drawType = type; }
GLenum getDrawType() const { return _drawType; }
void setNumberOfVertices(unsigned int numVertices) { _numberOfVertices = numVertices; }
unsigned int getNumberOfVertices() const { return _numberOfVertices; }
virtual void drawImplementation(osg::State& state) const;
@@ -182,6 +189,9 @@ namespace osgParticle
mutable CellMatrixMap _currentCellMatrixMap;
mutable CellMatrixMap _previousCellMatrixMap;
GLenum _drawType;
unsigned int _numberOfVertices;
};
@@ -196,18 +206,21 @@ namespace osgParticle
bool build(const osg::Vec3 eyeLocal, int i, int j, int k, float startTime, PrecipitationDrawableSet& pds, osg::Polytope& frustum, osgUtil::CullVisitor* cv) const;
// parameters
osg::BoundingBox _boundingBox;
float _intensity;
osg::Vec3 _wind;
float _particleSpeed;
float _particleSize;
osg::Vec4 _particleColor;
float _maximumParticleDensity;
osg::Vec3 _cellSize;
float _nearTransition;
float _farTransition;
bool _useFarLineSegments;
osg::ref_ptr<osg::Fog> _fog;
bool _dirty;
osg::Vec3 _wind;
float _particleSpeed;
float _particleSize;
osg::Vec4 _particleColor;
float _maximumParticleDensity;
osg::Vec3 _cellSize;
float _nearTransition;
float _farTransition;
bool _useFarLineSegments;
osg::ref_ptr<osg::Fog> _fog;
osg::ref_ptr<osg::Uniform> _inversePeriodUniform;
osg::ref_ptr<osg::Uniform> _particleSizeUniform;
osg::ref_ptr<osg::Uniform> _particleColorUniform;
typedef std::pair< osg::NodeVisitor*, osg::NodePath > ViewIdenitifier;
typedef std::map< ViewIdenitifier, PrecipitationDrawableSet > ViewDrawableMap;
@@ -215,8 +228,6 @@ namespace osgParticle
OpenThreads::Mutex _mutex;
ViewDrawableMap _viewDrawableMap;
osg::ref_ptr<osg::StateSet> _precipitationStateSet;
osg::ref_ptr<osg::Geometry> _quadGeometry;
osg::ref_ptr<osg::StateSet> _quadStateSet;