simplest way would be to use a pixel shader Gordon
__________________________________________________________ Gordon Tomlinson Product Manager 3D Email : gtomlinson @ overwatch.textron.com __________________________________________________________ (C): (+1) 571-265-2612 (W): (+1) 703-437-7651 "Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival" - Master Tambo Tetsura ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: Wednesday, January 14, 2009 5:43 PM To: OpenSceneGraph Users Subject: [osg-users] altitude terrain shading... All, I have a requirement to do some altitude shading (coloring) to a terrain database based off a referenced altitude. In other words, I would like to shade the terrain to be green below a given altitude and then shade it brown at or above the given altitude. The reference altitude basically represents the horizontal plane that intersects the terrain database. Any terrain below the plane is shaded green and any terrain above the plane is shaded brown. My question is, is there any support in OSG that will allow me to do something like this? My terrain is a database built with VPB. Any input would be most appreciated... -Shayne
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