Hi, I would like to create wholes in terrian patches.
My current approach is to clip fragments inside the whole instead using a custom terrain technique. I have some questions to this approach: Would a line intersection (Height of terrain) return elevation values at a hole, or does i regocnize that "there is no terrain inside the hole" ? What could be the right source to clip the fragments? a ) Using an alpha value and using the alphaFunc to clip the fragments, or b) would it be better (regarding long term improvement of osgTerrain) to introduce a new layer type as "mask" to mark which parts of a tile are visible and which are part of the hole in the terrain. If you recommend using approach a), how can I apply alpha value to the color layer? My VPB database has compressed textures, so it is not possible to add an alpha channel and set alpha values on the fly :( is it possible to use the alpha channel of a second color layer for blending? Thank you! Cheers, Torben ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35240#35240 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
