Andrew Ghost

Hi im newish to Houdini and am trying to get two solvers to interact with one and other.

RBD and VELLUM

I have two examples in the attached file one a DOP network and one SOP level using rbdbulletsolver and vellumsolver.


"DOP_SIM": I can get interaction between the velum and the RBD but the RBD fracture happens @ frame 1 rather than when it hits the ground. it must be coliding with the velum?.

"RBD_EXT_SIM" again I can get these two to interact but the rbdconfigure node does not allow the vellum object merge to defroem anf remains a solid "convex bounds" collition. any advice would be greatly recieved.

What im tryign to achieve is a falling glass box full of coloured balls that shatteres on the ground releasing the balls witht he balls pushing the shards and the shards arresting some balls. so a 2 way interaction.

thank you in advance.

t

I'm playing about with vex at the moment.

I have a question re copy to points SOP and VEX trying to target and manipulate individual copies.

Lets say the pscale of copy ID3 is 2.5 to begin with..


// SET THE SCALE OF OBJECT ID3 to 10
setattrib(0, ‘point’, ‘pscale’, 3, 0, 10, ‘set’);

The geometry spreadsheet now states pscale = “10” and the geo in the scene view is indeed 10 units.

float myscale = attrib(0, ‘point’, ‘pscale’, 3);
printf('%f', myscale);

But this print function still shows “2.5"

What am I doing wrong?

thanks

Hi I have an alembic file from Modo that contains “raining cubes” I can get it into Houdini, I can convert the .abc file to an RBD and have the cubes rain down and interact with a ground plane but…. the alembic file acts as a single abject, i.e. the cubes do not bounce individually. after the initial contact with the ground plane, the entire animation shoots up.

perhaps I don't fully understand the limitations of the alembic format?

Any assistance would be greatly appreciated.