Unik Posted August 30, 2009 Share Posted August 30, 2009 (edited) hey guys... i was trying to do some rigid body stuff in houdini...but i am facing some really weird problems... like i tried to make a RBD object (grid in this case) a static object.. when the box firstly collides with the grid it bounces and then it passes the grid.. you can see that here... ..hope you guys could help me figure out where the problem lies.. Thanks... Edited August 30, 2009 by Unik Quote Link to comment Share on other sites More sharing options...
imoh3n Posted August 30, 2009 Share Posted August 30, 2009 i think your problem maybe solve, if you set surface represent in collision setting to edge for RBD Object node. Quote Link to comment Share on other sites More sharing options...
Unik Posted August 30, 2009 Author Share Posted August 30, 2009 i think your problem maybe solve, if you set surface represent in collision setting to edge for RBD Object node. Hey.. thanks for your reply... but what exactly should i do..and where?? Quote Link to comment Share on other sites More sharing options...
graham Posted August 30, 2009 Share Posted August 30, 2009 If you are trying to just create a ground object. I would suggest using the Ground Plane DOP. If you are looking for something more robust, use your grid as the source for a Terrain DOP. Quote Link to comment Share on other sites More sharing options...
Unik Posted August 30, 2009 Author Share Posted August 30, 2009 (edited) If you are trying to just create a ground object. I would suggest using the Ground Plane DOP. If you are looking for something more robust, use your grid as the source for a Terrain DOP. thnxx for replying...but its not working.. i've also attached a file with it...maybe that could explain my problem better ... rbd_dop_activation.hipnc Edited August 31, 2009 by Unik Quote Link to comment Share on other sites More sharing options...
bhaveshpandey Posted August 30, 2009 Share Posted August 30, 2009 (edited) there are number of possible reasons..your collision geometry representation might be faulty..(which i doubt in this case as its a simple box)..your surface representation in the collisions tab also plays important role..(imoh3n was pointing to this).. I cant say for sure but looking at the picture it seems you have set it up using RBDkeyactive.. I cant see the collision relationship from the picture but generally its *Left Input affects the right*(when you merge the RBDs or Static Bodies in DOPs) unless you specify otherwise..it looks like you should switch the inputs in the merge.. Also I would suggest using a StaticSolver for the Grid (I prefer a ground plane) instead of Using a RBDKeyactive on it and then piping it and Box both through the RBDSolver.. Edited August 30, 2009 by bhaveshpandey Quote Link to comment Share on other sites More sharing options...
imoh3n Posted August 31, 2009 Share Posted August 31, 2009 (edited) select RBD object (CUBE), in setting go to collision tab then surface and change surface represent to edge. this maybe solve problem. but i also agree with bhaveshpandey, if you use merge node with default setting, change the order of selected node(Grid left, cube right) i test a scene same as your scene and change the RBD Collision Setting to edge, problem solved. try this. Edited August 31, 2009 by imoh3n Quote Link to comment Share on other sites More sharing options...
Unik Posted August 31, 2009 Author Share Posted August 31, 2009 Hey thanks graham, bhavesh and imoh3n... it is solved now.... i have changed it to edges in the surface represent... and ground plane also did the job... but switching of the input nodes didn't helped.... as i want the grid to be a static object at one time and dynamic at the other so i think that the first option will be better... and surely i'll keep ground plane in mind next time i'll do it.... thankyou all for your replies Quote Link to comment Share on other sites More sharing options...
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