Hi All, Apologies for the bad pun...
While the current random forest code distributes the individual trees evenly across the terrain. This works well for large areas of forest, but less well for more mixed terrain, where individual copses/woods of trees are mixed with completely open ground. For example, the farmland near where I live is dotted with small woodlands: http://www.nanjika.co.uk/photos/bute/content/20080505_123039_large.html http://www.nanjika.co.uk/photos/bute/content/20080505_123152_large.html http://www.nanjika.co.uk/photos/strathaven/content/20080607_182745_large.html I've been working on a small patch to allow trees to be grouped together into woods. This allows what seems to me to be a more realistic grouping of trees for farmland in particular. For example, the following screenshots show old and new renderings of some farmland near my local airfield: http://www.nanjika.co.uk/flightgear/old.jpg http://www.nanjika.co.uk/flightgear/new.jpg The code works in a pretty simple way using the materials.xml file. As an alternative to defining an overall tree coverage, one can define instead a density of woods, and then define the area that each wood covers (+/- 50%), and the tree density within the wood. I've uploaded a patch, including some materials.xml changes to the following location. http://www.nanjika.co.uk/flightgear/mat.tgz I'd be very interested in people's opinions on this, particularly as it would result in a change to the distribution of trees globally. I'm well aware that MixedCropPastureCover looks quite different in Scotland than elsewhere. On a related note, at some point we might want to consider enhancing materials.xml to allow for regional as well as seasonal variation, but that is far beyond the scope of this patch. Comments are welcome as always. -Stuart ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
