Fixed for division by zero issue.
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@ -40,11 +40,11 @@ void osgParticle::FluidProgram::execute(double dt)
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osg::Vec3 wind_force = - relative_wind * Area * (_viscosityCoefficient + _densityCoefficient*relative_wind.length());
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osg::Vec3 wind_accel = wind_force * particle->getMassInv();
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double critical_dt2 = relative_wind.length2()/wind_accel.length2();
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double compenstated_dt = dt;
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if (critical_dt2 < dt*dt)
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if (relative_wind.length2() < dt*dt*wind_accel.length2())
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{
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// osg::notify(osg::NOTICE)<<"** Could be critical: dt="<<dt<<" critical_dt="<<sqrtf(critical_dt2)<<std::endl;
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double critical_dt2 = relative_wind.length2()/wind_accel.length2();
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compenstated_dt = sqrtf(critical_dt2)*0.8f;
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}
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