A good starting point seems to use Bullet for that. Is there still a plan to integrate/merge Bullet in Blender (outside of BGE)?
Thanks, Erwin On 15 December 2011 23:09, Campbell Barton <[email protected]> wrote: > On Tue, Dec 13, 2011 at 7:24 PM, Knapp <[email protected]> wrote: > > I keep finding cases were I need a stack modifier that drops something > > to the ground. > > Examples of this are: > > > > A big group of trees that are in the dirt but the dirt is done with a > > cloud texture into a displacement mod. Getting each tree to the right > > place is a real pain. Then you adjust the cloud text and have to do it > > all over again. > > > > A boat on dynamic or ocean sim water. How do you get it to float with > > the waves in an animation? With ocean sim you don't even have an > > animated mesh to parent to. Being able to drop a vert to the water > > surface would be great. In the case of a big ship you might even want > > to drop 4 points on the ship to the water surface and not just a point > > of the surface but an average of the surface in an area under the > > boat. > > > > A car driving over rough ground in a film. Also a real pain to do but > > a drop to mesh surface would be great! Perhaps for each wheel. > > > > Mod options: > > to surface or plane or coordinate like +100 X. > > Surface as defined by a vert, surface point or an averaged area > > Direction (a vector?) to fall. > > Depth of penetration into surface. > > What is doing the touching, IE a point from the object or an offset > > from origin or the lowest surface etc. > > Perhaps some way to make the 4 points of a car that touch change the > > rotation of the object with possible locking of axis (plural form?). > > > > Possible problems is that it is heading into the direction of physics > > and might need more data, for example over time, than is easy to > > implement. Even with these limits I would find it useful even as a > > simple drop to point along an axis but much better as drop to surface. > > > > I am sure something like this must exist for the BGE but I want it for > > film and still picture making. > > > > I found this script. > > > http://wiki.blender.org/index.php/Extensions:2.5/Py/Scripts/Object/Drop_to_ground > > > > Is there anything else that I might have missed or another way to do > this? > > > > -- > > Douglas E Knapp > > Hi, firstly I think we should have at least 1 tool for simple drop to > group functionality (with some options for offset and orient to the > grounds shape). > > Further this gets a bit tricky because there is not one right way to > solve the problem, with how the tool functions (do you try to > intersect the base of the object with the grounds surface for > example), implementation too - could use objects/duplis/particles etc. > > > As for animation, for this I think a separate tool is needed since for > animation you get too many variables/issues > * how to follow surface without jittering, to follow surface over one > point or 4+ points on each corner of the object, > * some option to smooth out motion or dampen it > * a useful way to change speed > * how to manage multiple objects (possibly even have them not run into > eachother) > * you may want other objects to match this speed - like wheels of a > vehicle turning. > > If a developer doesn't have an immediate use case its a bit arbitrary > as to which issues you try to solve and how much detail you go into. > > -- > - Campbell > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers > _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
