SOFA -

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19 March 2019 at 17:48 in reply to: Building Stlib and integration with sofa in windows 10 #13217

Hugo
Keymaster

Hi @himanshu,

Have you installed Boost correctly (see doc here)?
Clearly, CMake does not seem to find it.

Hugo

19 March 2019 at 17:47 in reply to: Decreasing FPS during contact #13216

Hugo
Keymaster

Dear @hkomninos

It has been a long time since our last chat. Is everything fine?
If the advices from Eleonora helped, feel free to update us or close the topic.

Best wishes,

Hugo

5 March 2019 at 14:51 in reply to: Rotation/orientation of a rigid model #13164

Hugo
Keymaster

Hmm I see, I did not have the issue, since I guess my scissor was in (0,0,0).
I will check this again and get back to you.

Hugo

28 February 2019 at 15:15 in reply to: Rotation/orientation of a rigid model #13131

Hugo
Keymaster

Hi @fayad

Did my previous tip not work properly ?
I enclose here a temporary link for finding my working case

Do you have a short video clip of the result ?

Hugo

28 February 2019 at 14:30 in reply to: [SOLVED] Issues in Setting up QtCreator #13130

Hugo
Keymaster

Hi @avihs98

If you cannot press the ‘Generate’ button, it means you have some error at the Configure step. Can you give us the output of your configuration?

Best

Hugo

28 February 2019 at 14:27 in reply to: [SOLVED] Failed to Build CGAL Plugin #13129

Hugo
Keymaster

Hi @zliu157

Are you using the v18.06 version of SOFA?
Did you try to load manually the CGALPlugin.dll from the Plugin Manager (in runSofa, in the Edit menu)?

Best

Hugo

25 February 2019 at 19:18 in reply to: Link SOFA as an external dependency in a c++ project #13118

Hugo
Keymaster

hey @bmarques

an old topic ! is this still an issue ?

Hugo

25 February 2019 at 18:22 in reply to: [SOLVED] What is the mechanism of BilateralInteractionConstraint? #13116

Hugo
Keymaster

Dear @outtt

This thread is very old and a doc page is now available.
I close it.
Open a new one if you have further issue.

Hugo

25 February 2019 at 10:15 in reply to: [SOLVED] animating the movement of scissors with omni #13115
Hugo
Keymaster
Hi @fayad

Sorry for the delay, but I needed a bit of time to test your pb.
All you need is to make the moving part of your scissor, moving according to the base of the scissor (and not directly the Geomagic). The moving part would rely on a TransformEngine, while the base would rely on the GeomagicDriver.

It would look like:
```
 
<Node name="base" >
    <EulerImplicitSolver name="ODE solver" rayleighStiffness="0.05" rayleighMass="1.0" />
    <CGLinearSolver name="linear solver" iterations="25" tolerance="1e-10" threshold="10e-10" />
    <MechanicalObject name="instrumentState" position="@GeomagicDevice.positionDevice" template="Rigid" />

    ...

</Node>

<Node name="connector" >

    ...
    
</Node>

<Node name="right_tip" >
    <TransformEngine template="Rigid3d" name="TE" input_position="@../base/instrumentState.position" />

    
    <EulerImplicitSolver name="ODE solver" rayleighStiffness="0.05" rayleighMass="1.0" />
    <CGLinearSolver name="linear solver" iterations="25" tolerance="1e-10" threshold="10e-10" />
    <MechanicalObject name="instrumentState" position="@TE.output_position" template="Rigid" showObject="1" showObjectScale="1" />

    ...

</Node>
```
Best

Hugo
25 February 2019 at 09:49 in reply to: [SOLVED] Issues in Setting up QtCreator #13114

Hugo
Keymaster

Hi @avihs98

The CMakeList is the one at the root of the src repository. It is the main CMakeLists.txt file.

Best

Hugo

22 February 2019 at 15:03 in reply to: set different views in sofa #13106

Hugo
Keymaster

Hi @rubab

Not sure we will have a lot of Qt / GUI expert here. This is really a GUI-specific question more than a simulation issue. You can have a look at the code of the runSofa GUI in RealGUI.h.

Best

Hugo

19 February 2019 at 11:14 in reply to: How to constraint objects inside a closed mesh without using collision models? #13075

Hugo
Keymaster

Hmm the component does not seem to work that well. I should push some attraction-repulsion forcefield that I have somewhere.

Note that it isn’t compulsory to use the Lagrange constraint approach if you want only performance, with low accuracy. You can also prefer penalty method (using the classic DefaultAnimationLoop), like in the scene examples/Components/collision/TriangleModel.scn

19 February 2019 at 11:06 in reply to: [SOLVED] How do i a map an omni button to a python function #13074
Hugo
Keymaster
They should be, as any data.
Using something like:
```
state_button1 = your_GeomagicDriver.findData('button_1').value
```
Hugo
19 February 2019 at 09:04 in reply to: How to constraint objects inside a closed mesh without using collision models? #13065

Hugo
Keymaster

hey @outtt

I never used it myself, but you could use RepulsiveSpringForceField. It will apply a repulsive force when approaching the points of your general polyhedral mesh.
Would this fit your expectation?

Hugo

18 February 2019 at 18:26 in reply to: [SOLVED] Issues using the FEMLiver example from GEOMAGIC plugin #13061
Hugo
Keymaster
Hi @fayad

You actually faced two different issues with your two meshes. Let’s explain them one by one:
- by using your volumetric mesh (prostate): the start of SOFA takes time. It’s normal, since this scene is using a PrecomputedConstraintCorrection for the Lagrange constraints. This approach needs (before starting a simulation) to precompute the compliance matrix, as described here in the doc. And this can take (a lot of) time if your mesh is fine. If you want this initialization to be quicker (just to test the loading part) you can replace this PrecomputedConstraintCorrection by a UncoupledConstraintCorrection but collision will be less acurate (even potentially unstable if the compliance value is not suitable).
- the bunny is a surface, therefore the simulation does not work properly since a tetrahedral topology (volumetric) is expected. However, crashes are not the best way to help users 😉
Hope it helps.
Best

Hugo
18 February 2019 at 18:15 in reply to: [SOLVED] animating the movement of scissors with omni #13060

Hugo
Keymaster

Hey @fayad

My reply in your other thread should allow you to make it work, right?

Hugo

18 February 2019 at 18:12 in reply to: QTableView graph linked with SOFA scene file #13059

Hugo
Keymaster

Dear @rubab

I am no expert in UI and QtUI but you could make it in cpp from a controller. A Controller listening to the SOFA event (stop of animation) and trigger your table. Others like @damien-marchaluniv-lille1-fr might help you better than I can.

Hugo

18 February 2019 at 18:12 in reply to: How to constraint objects inside a closed mesh without using collision models? #13058

Hugo
Keymaster

Dear @outtt

you can use some planeforcefields. By using 6 PlaneForceField you can create a virtual cube and it would force your object to remain through spring forces instead of collision forces.

Best,

Hugo

18 February 2019 at 18:12 in reply to: [SOLVED] How do i a map an omni button to a python function #13057

Hugo
Keymaster

Dear @fayad,

The GeomagicDriver defines several data. Among them the data “button_1” and “button_2” are boolean specifying the state (pressed = 1) of each button.

Best

Hugo

6 February 2019 at 18:14 in reply to: Require steps to build Sofa on Windows 10 #13010

Hugo
Keymaster

See the Windows doc.
Cheers,

Hugo

6 February 2019 at 18:11 in reply to: Require steps to build Sofa on Windows 10 #13008

Hugo
Keymaster

Hey @himanshu

The output is actually giving you the steps to follow. You need to set the CMake variable : BOOST_ROOT to the location of Boost.
During the CMake configuration, you should have received a warning telling you to set this BOOST_ROOT.
Then, it will find it.

Best,

Hugo

4 February 2019 at 17:21 in reply to: [SOLVED] Harmonic excitation with constantForceField (Python Controller) #12983
Hugo
Keymaster
Hey @nassim,

I guess the force that you expect to apply is supposed to be change progressively while the simulation is running. Right ? If so, the force must depend on the current time.

The function onKeyPressed is called only when a key is pressed. But you could use instead the function onBeginAnimationStep which is called at each beginning of simulation step.

About the time, you can access this information in the root node:
```
rootNode.findData('time').value
```
I hope this helps
Best

Hugo
30 January 2019 at 14:11 in reply to: Stop Animation function in sofa #12966

Hugo
Keymaster

Hi @rubab

Does this new topic : https://www.sofa-framework.org/community/forum/topic/get-signal-when-scene-file-is-closed-and-display-a-graph-qtablewidget/ closes this one ?

I would also be curious about your project @rubab? Could you tell us more about it?
Cheers,

Hugo

29 January 2019 at 18:07 in reply to: Issue using BilateralInteractionConstraint #12954

Hugo
Keymaster

Hey @nassim

You’re welcome, the community is happy to help when possible!
In your case – IMO -, you want to attach different parts, the best approach would be to set bilateral constraints on your different objects. You can find an example in examples/Components/constraint/BilateralInteractionConstraint.scn

You can define a master node, containing childNode that would contain the different part of your robot.

Best

Hugo

29 January 2019 at 17:59 in reply to: [SOLVED] How to use the component SparseLDLSolver? #12953

Hugo
Keymaster

Hi @outtt

Did you face any issue in the CMake configuration with METIS?
Like Damien, I successfully run the scene.

Hugo
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Hugo

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