[osg-users] [Fwd: Re: to draw landscapes beginning from a matrix]

[aurora restivo]

Hi Mike!

I have resolved the problem of the visualization of the skirt, using 
osgTerrain::Locator, osgTerrain::NoDataValue, and drawing with 
osgTerrain::GeometryTechnique instead of drawing the HeightFieldLayer 
with ShapeDrawable.
I am using Locator however I don't want my terrain to be drawn using the

    locator->setCoordinateSystemType(osgTerrain::Locator::GEOCENTRIC)

I have tried to apply "GEOGRAPHIC" but it doesn't visualize anything.
I would perhaps need a Cartesian Locator for the correct visualization 
of my terrain.


Thanks in advance
Aurora




Mike Weiblen ha scritto:
> The existence of the skirt is controlled by your NODATA value.  You must
> set the NODATA value appropriate for your dataset:
>
> hfLayer->setValidDataOperator(new osgTerrain::NoDataValue(
> YOUR_NODATA_VALUE ));
>
> Here are various links to review concerning the concept of NODATA:
> http://gdal.org/gdal_datamodel.html
> http://map.hut.fi/doc/Geo-GDAL/html/create_raster.html
> http://www.gdal.org/gdalwarp.html
> http://www.csc.noaa.gov/crs/tcm/faq.html
> http://cses.washington.edu/cig/maps/dataFormat.shtml
>
> -- mew
>
>
>
>
>   
>> -----Original Message-----
>> From: osg-users-bounces at lists.openscenegraph.org [mailto:osg-users-
>> bounces at lists.openscenegraph.org] On Behalf Of aurora restivo
>> Sent: Wednesday, February 27, 2008 8:30 AM
>> To: OpenSceneGraph Users
>> Subject: [osg-users] [Fwd: Re: to draw landscapes beginning from a
>> matrix]
>>
>> please I need urgent an answer! :(
>>
>> Aurora
>>
>>
>>
>>
>> I need to get the terrain as in the figure that I send you, but
>>     
> without
>   
>> visualizing the skirt.
>>
>> Aurora
>>     
>
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>
>   

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