[osg-users] How to select OSGB tiles for current zoom?

[shlem at netvision.net.il]

Thank you for the answer.
Can you point me to appropriate class/field name in osg

From: Chris Hanson 
Sent: Wednesday, September 18, 2019 22:28
To: OpenSceneGraph Users 
Subject: Re: [osg-users] How to select OSGB tiles for current zoom?

Those max screen diameter values are using by projecting the diameter of the bounding sphere (usually encoded in any Group-derived nodes) through the modelview/projection matrix to assess its on-screen extent in pixels. If it is above or below the threshold defined by the max screen diameter field, that triggers a change in the selection of children.

On Wed, Sep 18, 2019 at 12:55 PM <shlem at netvision.net.il> wrote:

  Hi
  I wrote my own renderer based on DirectX.
  Everything goes nice except one issue.
  How I decide to show the some tile/node or its children regarding to current zoom level?
  Does each tile/none have some hints? (like 3mx files for example, that have  MaxScreenDiameter field)
  Thanks in advance
  Leonid Shikhmatov
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