MENOZ Posted September 9, 2009 Share Posted September 9, 2009 it's possible to use spring constraint with a RBD fracture object? I want that every piece of geometry being constrained to a point. probably it's very simple.. Quote Link to comment Share on other sites More sharing options...
MENOZ Posted September 11, 2009 Author Share Posted September 11, 2009 I'm asking for something that is not possible to do? I try to explain better: I use a Dop fracure object, so I have my objects in the scene. I want, for exaple, that each of those object being spring-constrained to some points, so when I add the gravity every object remains attached to his spring and swing around.. how can I do that? Quote Link to comment Share on other sites More sharing options...
johner Posted September 12, 2009 Share Posted September 12, 2009 I'm asking for something that is not possible to do? I try to explain better: I use a Dop fracure object, so I have my objects in the scene. I want, for exaple, that each of those object being spring-constrained to some points, so when I add the gravity every object remains attached to his spring and swing around.. how can I do that? I put an example that does something similar here. That example has some trickiness to assume you need to have DOPs calculate the center of mass of each object before you apply the constraints. If that's not the case (i.e. the center of mass and the centroid are the same) this gets easier as you can use the centroid expression on the geometry itself. Let me know if that's still unclear. Quote Link to comment Share on other sites More sharing options...
lemond Posted April 13, 2010 Share Posted April 13, 2010 (edited) I put an example that does something similar here. That example has some trickiness to assume you need to have DOPs calculate the center of mass of each object before you apply the constraints. If that's not the case (i.e. the center of mass and the centroid are the same) this gets easier as you can use the centroid expression on the geometry itself. Let me know if that's still unclear. Can we connect springs between the RBD object's verts in Houdini? If yes, no need for a pivot. Edited April 14, 2010 by lemond Quote Link to comment Share on other sites More sharing options...
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