[SOLVED] Geomagic plugin

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  • 19 November 2018 at 10:34 #12502
    Harris
    Blocked

    Hi,

    I would like to know if there is an explanation about Geomagic plugin(components and algorithms used).

    Best,
    Harris

    21 November 2018 at 18:57 #12508
    Hugo
    Keymaster

    Dear @hkomninos

    Documentation for the Geomagic plugin is available here and then, in applications/plguins/Geomagic/scenes you can find examples that should help you understanding the use of the driver in SOFA.

    Best

    Hugo

    22 November 2018 at 20:03 #12521
    Harris
    Blocked

    Hi Hugo,

    I have read this the related doc and I tried the examples you mentioned but I was wondering if there is a better explanation for the use of some components for example:
    -why Omni is used
    -why VectorSpringForcefield is used to connect them?
    (Is it a coupling between god object(Instrument) and haptic device(Omni) that is described in the related literature?)

    Also,I tried the scene GeomagicCarving which is on Github but the instrument sometimes penetrates the cylinder.I meen that the result is not as good as appeared in the video of “SofaCarving with haptics”.
    Do you have any advice to fix this?

    Sorry for all these quetions but it is the first time that I use haptic devices.
    Thank you for your time,
    Harris

    23 November 2018 at 11:15 #12527
    Harris
    Blocked

    Hi Hugo,

    I think in the geomagic examples ,for example in Geomagic-FEMLiver.scn is wrong to write for the position of the instrument:
    <MechanicalObject name=”instrumentState” position=”@GeomagicDevice.positionDevice” />
    I deleted “@GeomagicDevice.positionDevice” and it works well without penetrating the liver.I did the same for the cylinder example.
    I think this happens because instrument is the god object and its position has to be defined from the position of the Omni and the spring which connect them(VectorSpringForcefield) and not to be tagged to the position of the device.
    Is it correct?

    Best,
    Harris

    12 December 2018 at 20:15 #12574
    Hugo
    Keymaster

    Thanks @hkomninos for your feedback.
    Could you please make a pull-request using GitHub to share this change in the public repository of SOFA please?

    Best

    Hugo

    13 December 2018 at 17:58 #12594
    Hugo
    Keymaster

    Hey @hkomninos

    A PR goes in this sense now.
    You can have a look to the contribution of epernod: here.

    Best

    Hugo

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