Hi all, I have a class extended from osg::Group called FireEffect, which contains 3 particle systems: a yellow flame, a red flame, and a smoke trail. I also have a truck model in the scene.
The truck model and FireEffect object are children of the Root, thus they are siblings in the scenegraph. In my FireEffect I have a variable intensity which modifies the values of things like the particle life, size, rate etc. For some reason, when intensity is certain values is causes the particles and the truck to flicker and disappear completely. Here is the method which is causing problems: http://pastebin.com/RnqtXWRx I have done some debugging and the values I am modifying are not below 0 when the objects disappear. I know the arguments themselves look a bit messy; this is because I've calculated them using straight lines on a graph, giving a nice linear transition from a blazing fire to a smouldering surface. intensity is always between 0.0 and 1.0 and two values which cause the problem are 0.4 and 0.6. Surely it can't be a scene complexity problem because 1.0 works fine, and that is when the most particles are being churned out. It worries me that the truck object disappears, as it is not related to the FireEffect group at all! I should also mention that I have an HUD with several textured planes which all stay visible. The heirarchy: Root -> ProjectionMatrix -> ModelMatrix -> PAT -> Geode -> Plane for texture I was using osg 2.8.5 but updated to 3.0.0 as a last resort before posting here. Does anybody have any ideas? Thanks in advance, Simon. ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43165#43165 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
