SOFA Joshua

Joshua started the topic Setting camera position/orientation with SofaPython in the forum Using SOFA 1 month, 1 week ago

Hi,

I’m having a bit of trouble figuring out how to modify the camera position/orientation. In the scene below, changing the parameters of the InteractiveCamera doesn’t do anything, and the object doesn’t show up at all in the OglViewport. I assume I’m screwing up something basic and would appreciate any help!

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from stlib.scene import…[Read more]
Joshua replied to the topic BilateralInteractionConstraint reduces gravity by 100x in the forum Using SOFA 9 months, 2 weeks ago

Looks like that worked! Thanks so much, Hugo!
Joshua replied to the topic BilateralInteractionConstraint reduces gravity by 100x in the forum Using SOFA 11 months, 2 weeks ago

Following up, when I replace the attached soft body with a rigid one, the factor of 100 (or 1/dt based on your earlier post) disappears:
import Sofa from stlib.scene import Scene from stlib.visuals import VisualModel
import numpy as np
def createScene(rootNode): scene = Scene(rootNode, plugins=["SoftRobots",…[Read more]
Joshua replied to the topic BilateralInteractionConstraint reduces gravity by 100x in the forum Using SOFA 11 months, 3 weeks ago

Hi Hugo,

I really appreciate your reply, and look forward to hearing what you uncover when you get a chance.

Best,
Josh
Joshua replied to the topic Segfault with MeshMatrixMass in the forum Using SOFA 1 year ago

Hi Hugo,
I’m using sofa 19.06, for which I downloaded the windows exe binaries here https://www.sofa-framework.org/download/. To run the simulation I just use runSofa.exe.

Best,
Josh
Joshua started the topic BilateralInteractionConstraint reduces gravity by 100x in the forum Using SOFA 1 year, 1 month ago

Hello,
I’m attempting to model a soft body attached to a rigid body. As suggested in several posts on the forum, I rigidly map the points of a surface mesh to the 6dof rigid body, and use a BilateralInteractionConstraint to attach the soft body to the rigid surface. This works as a method of attachment, but the constraint seems to dilute…[Read more]
Joshua replied to the topic Segfault with MeshMatrixMass in the forum Using SOFA 1 year, 1 month ago

I get the same segfault when I use the finger.vtk included with the Soft Robots plugin CableGripper tutorial, https://github.com/SofaDefrost/Tutorials/blob/master/Cable-Gripper/data/mesh/finger.vtk

If you have a known working mesh, could you link to it so I can try?
Joshua replied to the topic Segfault with MeshMatrixMass in the forum Using SOFA 1 year, 1 month ago

Interesting. I don’t see those error messages on my end. I wonder why the DiagonalMassMatrix works?
Joshua replied to the topic Segfault with MeshMatrixMass in the forum Using SOFA 1 year, 1 month ago

Thanks for your help! The file is a VTK file generated with gmsh, containing points, lines, triangles and tetrahedra. finger.vtk
Joshua started the topic Segfault with MeshMatrixMass in the forum Using SOFA 1 year, 1 month ago

Hello,
I’m trying to use a MeshMatrixMass to simulate a soft material, but I keep getting segfaults. My code is below (it uses the template library from the Soft Robots Plugin):
import Sofa from stlib.scene import Scene
def createScene(rootNode): scene = Scene(rootNode, plugins=["SoftRobots",…[Read more]
Joshua became a registered member 1 year, 1 month ago

Joshua

@joshuaf