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Refined the default settings for rain and snow to achieve better framerates.

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This commit is contained in:
Robert Osfield
2006-04-14 14:24:12 +00:00
parent fd838f5787
commit 839fb12098
1 changed files with 18 additions and 5 deletions
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23
examples/osgprecipitation/osgprecipitation.cpp
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@@ -42,31 +42,40 @@ struct PrecipatationParameters : public osg::Referenced
fogDensity(0.001),
fogExponent(1.0),
fogEnd(1000.0),
fogColour(0.5, 0.5, 0.5, 1.0)
fogColour(0.5, 0.5, 0.5, 1.0),
clearColour(0.5, 0.5, 0.5, 1.0)
{}
void rain (float intensity)
{
particleVelocity = osg::Vec3(0.0,0.0,-2.0) + osg::Vec3(0.0,0.0,-10.0)*intensity;
particleSize = 0.01 + 0.02*intensity;
numberOfParticles = intensity * 100000000;
particleColour = osg::Vec4(0.6, 0.6, 0.6, 1.0) - osg::Vec4(0.1, 0.1, 0.1, 1.0)* intensity;
numberOfParticles = intensity * 85000000;
numberOfCellsX = 50 + (int)(150.0f*intensity);
numberOfCellsY = 50 + (int)(150.0f*intensity);
farTransition = 140.0f - 100.0f*intensity;
fogExponent = 1.0f;
fogDensity = 0.01f*intensity;
fogEnd = 250/(0.01 + intensity);
farTransition = 150.0f - 100.0f*intensity;
fogColour.set(0.5, 0.5, 0.5, 1.0);
clearColour.set(0.5, 0.5, 0.5, 1.0);
}
void snow(float intensity)
{
particleVelocity = osg::Vec3(0.0,0.0,-1.0) + osg::Vec3(0.0,0.0,-0.5)*intensity;
particleSize = 0.02 + 0.03*intensity;
numberOfParticles = intensity * 100000000;
particleColour = osg::Vec4(0.85f, 0.85f, 0.85f, 1.0f) - osg::Vec4(0.1f, 0.1f, 0.1f, 1.0f)* intensity;
numberOfParticles = intensity * 80000000;
numberOfCellsX = 50 + (int)(150.0f*intensity);
numberOfCellsY = 50 + (int)(150.0f*intensity);
farTransition = 140.0f - 100.0f*intensity;
fogExponent = 1.0f;
fogDensity = 0.02f*intensity;
fogEnd = 150.0f/(0.01f + intensity);
farTransition = 150.0f - 100.0f*intensity;
fogColour.set(0.6, 0.6, 0.6, 1.0);
clearColour.set(0.6, 0.6, 0.6, 1.0);
}
osg::BoundingBox boundingBox;
@@ -83,6 +92,7 @@ struct PrecipatationParameters : public osg::Referenced
float fogDensity;
float fogEnd;
osg::Vec4 fogColour;
osg::Vec4 clearColour;
};
struct PrecipitationCullCallback : public virtual osg::Drawable::CullCallback
@@ -752,6 +762,9 @@ int main( int argc, char **argv )
while (arguments.read("--fogColor", parameters.fogColour.r(), parameters.fogColour.g(), parameters.fogColour.b(), parameters.fogColour.a())) {}
while (arguments.read("--fogColour", parameters.fogColour.r(), parameters.fogColour.g(), parameters.fogColour.b(), parameters.fogColour.a())) {}
viewer.setClearColor(parameters.clearColour);
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{