FGFS-4.1/OpenSceneGraph
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Added --numberOfParticles, --numberOfCellsX, --numberOfCellsY, --numberOfCellsZ, --boundingBox, --fogEnd and --fogDensity controls

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This commit is contained in:
Robert Osfield 2006-04-13 20:21:55 +00:00
parent 264ae12770
commit f1b52fbd0a
1 changed files with 34 additions and 12 deletions
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46
examples/osgprecipitation/osgprecipitation.cpp
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@ -38,23 +38,29 @@ struct PrecipatationParameters : public osg::Referenced
numberOfCellsY(100), numberOfCellsY(100),
numberOfCellsZ(1), numberOfCellsZ(1),
nearTransition(25.0), nearTransition(25.0),
farTransition(100.0) farTransition(100.0),
fogDensity(0.1),
fogEnd(1000.0)
{} {}
void rain (float intensity) void rain (float intensity)
{ {
particleVelocity = osg::Vec3(0.0,0.0,-2.0) + osg::Vec3(0.0,0.0,-10.0)*intensity; particleVelocity = osg::Vec3(0.0,0.0,-2.0) + osg::Vec3(0.0,0.0,-10.0)*intensity;
particleSize = 0.01 + 0.04*intensity; particleSize = 0.01 + 0.02*intensity;
numberOfParticles = intensity * 100000000; numberOfParticles = intensity * 100000000;
particleColour = osg::Vec4(0.6, 0.6, 0.6, 1.0); particleColour = osg::Vec4(0.6, 0.6, 0.6, 1.0);
fogDensity = intensity;
fogEnd = 250/(0.01 + intensity);
} }
void snow(float intensity) void snow(float intensity)
{ {
particleVelocity = osg::Vec3(0.0,0.0,-1.0) + osg::Vec3(0.0,0.0,-0.5)*intensity; particleVelocity = osg::Vec3(0.0,0.0,-1.0) + osg::Vec3(0.0,0.0,-0.5)*intensity;
particleSize = 0.02 + 0.05*intensity; particleSize = 0.02 + 0.03*intensity;
numberOfParticles = intensity * 100000000; numberOfParticles = intensity * 100000000;
particleColour = osg::Vec4(0.8, 0.8, 0.8, 1.0); particleColour = osg::Vec4(0.8, 0.8, 0.8, 1.0);
fogDensity = intensity;
fogEnd = 150/(0.01 + intensity);
} }
osg::BoundingBox boundingBox; osg::BoundingBox boundingBox;
@ -67,6 +73,8 @@ struct PrecipatationParameters : public osg::Referenced
unsigned int numberOfCellsZ; unsigned int numberOfCellsZ;
float nearTransition; float nearTransition;
float farTransition; float farTransition;
float fogDensity;
float fogEnd;
}; };
struct PrecipitationCullCallback : public virtual osg::Drawable::CullCallback struct PrecipitationCullCallback : public virtual osg::Drawable::CullCallback
@ -574,11 +582,11 @@ osg::Node* createCellRainEffect(const PrecipatationParameters& parameters)
} }
} }
#if 1
osgUtil::Optimizer::SpatializeGroupsVisitor sgv; osgUtil::Optimizer::SpatializeGroupsVisitor sgv;
group->accept(sgv); group->accept(sgv);
sgv.divide(); sgv.divide();
#endif
osg::StateSet* stateset = group->getOrCreateStateSet(); osg::StateSet* stateset = group->getOrCreateStateSet();
@ -649,9 +657,9 @@ osg::Node* createModel(osg::Node* loadedModel, PrecipatationParameters& paramete
osg::Fog* fog = new osg::Fog; osg::Fog* fog = new osg::Fog;
fog->setMode(osg::Fog::LINEAR); fog->setMode(osg::Fog::LINEAR);
fog->setDensity(0.1f); fog->setDensity(parameters.fogDensity);
fog->setStart(0.0f); fog->setStart(0.0f);
fog->setEnd(1000.0f); fog->setEnd(parameters.fogEnd);
fog->setColor(osg::Vec4(0.5f,0.5f,0.5f,1.0f)); fog->setColor(osg::Vec4(0.5f,0.5f,0.5f,1.0f));
stateset->setAttributeAndModes(fog, osg::StateAttribute::ON); stateset->setAttributeAndModes(fog, osg::StateAttribute::ON);
@ -703,16 +711,30 @@ int main( int argc, char **argv )
while (arguments.read("--snow", intensity)) parameters.snow(intensity); while (arguments.read("--snow", intensity)) parameters.snow(intensity);
while (arguments.read("--rain", intensity)) parameters.rain(intensity); while (arguments.read("--rain", intensity)) parameters.rain(intensity);
float particleSize; while (arguments.read("--particleSize", parameters.particleSize)) {}
while (arguments.read("--particleSize", particleSize)) parameters.particleSize = particleSize;
osg::Vec3 particleVelocity; osg::Vec3 particleVelocity;
while (arguments.read("--particleVelocity", particleVelocity.x(), particleVelocity.y(), particleVelocity.z() )) parameters.particleVelocity = particleVelocity; while (arguments.read("--particleVelocity", particleVelocity.x(), particleVelocity.y(), particleVelocity.z() )) parameters.particleVelocity = particleVelocity;
float transition; while (arguments.read("--nearTransition", parameters.nearTransition )) {}
while (arguments.read("--nearTransition", transition )) parameters.nearTransition = transition; while (arguments.read("--farTransition", parameters.farTransition )) {}
while (arguments.read("--farTransition", transition )) parameters.farTransition = transition;
while (arguments.read("--numberOfParticles", parameters.numberOfParticles )) {}
while (arguments.read("--numberOfCellsX", parameters.numberOfCellsX )) {}
while (arguments.read("--numberOfCellsY", parameters.numberOfCellsY )) {}
while (arguments.read("--numberOfCellsZ", parameters.numberOfCellsZ )) {}
while (arguments.read("--boundingBox", parameters.boundingBox.xMin(),
parameters.boundingBox.yMin(),
parameters.boundingBox.zMin(),
parameters.boundingBox.xMax(),
parameters.boundingBox.yMax(),
parameters.boundingBox.zMax())) {}
while (arguments.read("--fogDensity", parameters.fogDensity )) {}
while (arguments.read("--fogEnd", parameters.fogEnd )) {}
// if user request help write it out to cout. // if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help")) if (arguments.read("-h") || arguments.read("--help"))
{ {