[osg-users] Create circle osgEarth

[Marco Pompei]

Hi Glenn,
i tried that function but i didn't find it... it may be i am not using recent osgEarth. I d like to get another way: i saw that CircleNode has setRadius() and i can use this to draw more times. To resize the i d need to know some ABSOLUTE NUMBER for example distance of projection of the camera to sea level.

Is it possibile getting this value?

Please help me.... I am getting crazy javascript:emoticon(':\'') javascript:emoticon(':\'') 
javascript:emoticon(':)')



gwaldron wrote:
> The header file has information on how to use it.
> 
> https://github.com/gwaldron/osgearth/blob/master/src/osgEarthAnnotation/GeoPositionNodeAutoScaler (https://github.com/gwaldron/osgearth/blob/master/src/osgEarthAnnotation/GeoPositionNodeAutoScaler)
> 
> 
> Glenn Waldron
> 
> 
> 
> 
> On Sat, Jul 16, 2016 at 3:50 AM, Marco Pompei < ()> wrote:
> 
> > Hi GWaldron,
> > thank you for your help and thank to indicate me right forum for osg::Earth. i ll write there as well. Unfortunately i didn't get how i can use it cause i didn't find any documentation about it.
> > 
> > Do you have any example?
> > 
> > Thank you
> > M.
> > 
> > 
> > gwaldron wrote:
> > 
> > > Marco,You can use the GeoPositionNodeAutoScaler cull callback on your CircleNode, assuming you are using a recent osgEarth.
> > > 
> > > 
> > > (For osgEarth-specific questions, you can use the osgEarth support forum at http://forum.osgearth.org (http://forum.osgearth.org) (http://forum.osgearth.org (http://forum.osgearth.org)))
> > > 
> > > 
> > > 
> > > Glenn Waldron
> > > 
> > > 
> > > 
> > > 
> > > On Tue, Jul 5, 2016 at 2:43 PM, Marco Pompei < ()> wrote:
> > > 
> > > 
> > > > Hi,
> > > > I am using osgEarth (derivated by OSG) to develop an application for drawing several geometry on earth.
> > > > 
> > > > I need to draw a circle (and I know how i can do it, using CircleNode class) but no resizable. I mean that I zoom in/out the earth and I'd like the circle area don't change. Unfortunately, constructor of this class, wants value for radius and when I zoom out/in the circle area decrease/increase because its radius keeps constant.
> > > > 
> > > > Any advice for me?
> > > > Thank you!
> > > > 
> > > > Cheers,
> > > > Marco
> > > > 
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> > > > 
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