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Snapping with QR-Code

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8 comments

  • Fologram

    Hi Kim, 

    When Fologram detects the QR code it will position the origin (0,0,0) point of your Rhino model in the corner of the code. Are your lines also positioned at or very near to your model origin? What may be happening is that they have been moved to above or behind you after snapping to the code. It might be worth creating a new Rhino file (in millimeters), drawing a 100x100mm rectangle at the Rhino origin, and then trying to snap this model to a QR code to see if you can still see your rectangle. 

    Curves streamed from Rhino always have the same default thickness, but you can change the thickness of the curves if you use the Sync Object component in Grasshopper. To change the thickness of the curve, reference it from rhino into a curve component in grasshopper, then connect this to a Sync Object component. Right click the sync object component and change the curve thickness property to whatever thickness you want. To see the thickness update on your device, reconnect the curve to the sync object component. 

    By the way, we've set up a forum for helping out with questions and projects from our community, you can find it at community.fologram.com - feel free to get in touch there as we rarely use this help center. 

    Cheers
    Gwyll

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  • Kim Winkler

    Hi Gwyll,

     

    thank you for your fast answer.

    I draw a rectangle and the origin 0,0,0 (see picture 1). After it I placed the QR-Code to 0,0,0 and i start the App on my Iphone.

    I can see the rectangle that i draw in rhino on the floor now (the model is not placed) (see picture 2).

    Now I touch the snap button, Fologram says "snapped to QR-Code" but my model is not there (see picture 3).

     

     

     

    Thank you for your help.

     

    Best regards Kim

     

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  • Kim Winkler

    If it is not placed or snapped I can see it. When I placed the model by touching on my display, I cann see it too. But when I want to snap it with QR-Code it is not there.

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  • Fologram

    Hi Kim,

    Can you please share your QR code pdf with me so I can verify it contains the right data? 

    Cheers
    Gwyll

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  • Kim Winkler

    Hi Gwyll,

     

    thanks for your answer. Here is a picture from the QR-Code or should I send it in an E-mail?

    Do you have an adress for me?

     

    Best Kim

     

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  • Fologram

    Hi Kim, 

    It looks like somehow the Size property of the QR code is generating "0, 18" rather than "0.18" which would then be interpreted incorrectly by Fologram. 

    Can you try with this marker here: https://learn.fologram.com/hc/article_attachments/900000332363/QRCode.pdf and let me know if that solves the problem? 

    Cheers
    Gwyll

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  • Kim Winkler

    Hi Gwyll,

     

    it works perfect! thank you. How can I solve the problem with my QR-Code, do you have an idea?

    Your program is very good and can help us a lot.

     

    So I try several things and now I have a new question. Now I use an I-Phone to stream things in AR. But the drift is too high for my use-case.

    Is there any possibility to reduce it? Is the drift better with a Hololens or has nothing to do with the hardware?

     

    Best Regards and thanks

     

    Kim

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  • Fologram

    Hi Kim, 

    If you try creating a QR code with the FologramQR command and just leave the size as the default does it still create a PDF with the "0,18" value for size? If it does it may be something to do with the language settings on your PC.

    Generally speaking, recent models of iPhones and iPad pros have the best tracking for mobile devices. You can improve tracking by following a few of the tips here: https://community.fologram.com/c/tech-support/drift-and-accuracy/14 (they are for the Hololens but also apply to the phone). 

    The Hololens has much better tracking than any mobile phone in my experience. This is because the HoloLens has 4 onboard greyscale cameras and a depth camera dedicated to optimising tracking accuracy, while most mobile phones are only using a single RGB camera for tracking. 

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