Sean Robinson

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Viewing 15 posts - 16 through 30 (of 77 total)
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  • in reply to: No rain with hand #2339
    Sean Robinson
    Participant

    See this previous post for ideas. Let us kow if that does not help.

    Sean Robinson
    Participant

    I’ve not done more than play with different liquid textures, so others might have better information.

    The key piece is replacing the SurfaceAddWaterColor.fs file with a copy using different colors. Search inside that file for “Lava” for the line to change. The sandbox will automatically update if you replace SurfaceAddWaterColor.fs while SARndbox is running.

    in reply to: Regarding the choice of sand #2337
    Sean Robinson
    Participant

    Any sand is usable. All varieties will have benfits and drawbacks.

    Have you seen the “Sand” and “Health Concerns” sections of the online instructions?

    in reply to: non “short-throw” projectors #2334
    Sean Robinson
    Participant

    I think the Promethean has too short of a throw. As I read the specs, it will not focus beyond a 24 inch throw distance. It’s common to have around a 40 inch throw distance on a sandbox. Focus is not generally vital with the projected sandbox content (except for calibration), but this may be too far out.

    in reply to: Kinect depth camera #2333
    Sean Robinson
    Participant

    From the image you shared, I suspect your depth camera has died. Are there any error messages in the terminal window where you started RawKinectViewer?

    in reply to: Vrui VR Toolkit Installation Linker Error #2332
    Sean Robinson
    Participant

    The only thing I have seen similar to this is when I have tried to continue on from a failed build. The Make dependency graph does not see the need to recompile object files, so stale files are used during linking. One option is to remove the src directory before re-running bash Build-Ubuntu.sh.

    Sean Robinson
    Participant

    Do you have sand? Or are you still using cardboard?

    I suspect the calibration error message is because all your tie points are above the “sand”. Once you are able to capture tie points below the sand surface level, I expect the error messages will stop.

    Look for the “calibration-error-some-tie-points-have-negative-projection-weights” topic on the old forum on the Wayback Machine for a hint from okreylos about tie points.

    (I would show the direct link, but my post fails when I include it.)

    Sean Robinson
    Participant

    Thank you for sharing the videos. That makes it much faster to see possible causes.

    I believe the source of your calibration problems is that the handle on your target is too wide. The calibration software needs to “see” a circle floating in space and will not project green if fingers, box walls, sand, or other things are too close. Assuming the circle has a 12 cm diameter (CD size), your handle is about 1.6 cm across where it intersects the circle. Try replacing your wide handle with a stiff wire and keep at least a 5 cm gap between the circle and your fingers.

    Let me know if this works or not.

    in reply to: Sandbox Base Plane Equation #2308
    Sean Robinson
    Participant

    I’ve seen this when I forget to “Average Frames” before trying to extract the base plane. Read the second paragraph of Step 8 again and let me know if this does not solve your issue.

    in reply to: AR Sandbox application wont start #2306
    Sean Robinson
    Participant

    Fortunately, there is a core dump and more information is available in there. Assuming you start the sandbox (in a terminal window) like “./bin/SARndbox”, then please post the output from gdb -q ./bin/SARndbox core.

    If you do not see message like “Core was generated by…” and “Program terminated with signal 11…”, then type where at the “(gdb)” prompt.

    Please post the gdb output that starts with “Core was generated by…”. The info should help point out something for further checking.

    in reply to: CalibrateProjector “command not found” #2302
    Sean Robinson
    Participant

    You’re welcome.

    …RawKinectViewer opened without that.

    I can see why you thought the directory was not needed. This is a quirk to the way the Sandbox software is installed. RawKinectViewer is a system-wide install, while CalibrateProjector is only under the compiling user’s home directory.

    in reply to: CalibrateProjector “command not found” #2300
    Sean Robinson
    Participant

    Welcome to the forum.

    The response means that either the utility was not created in Step 5 (was there an error?) or your entered text does not match Step 11. Make sure you follow Step 11 as it is written since the directory is an important detail.

    If that does not work, please post the output of ls -l from the same command window. This will show all the files in your current directory with some metadata about the files.

    in reply to: Projection distorted #2298
    Sean Robinson
    Participant

    Could you give more details about how you are creating the secondary view? Are you using SARndbox -remote and SARndboxClient or another method?

    in reply to: Sandbox’s 3D Box Corner Positions Problem #2295
    Sean Robinson
    Participant

    A few ideas…

    I have previously made the mistake of editing the wrong BoxLayout.txt file. Make sure the file you’re editing is the same one SARndbox is reading. Try very large changes (i.e. 20-50 cm) and see if there is any change in the running sandbox. If not, it’s the wrong file.

    Try cleaning the Kinect IR lens.

    Your Kinect may have failing pixels “on the left side”. Physically reorient the camera so that the bad pixels view outside the box perimeter.

    in reply to: Informational Graphic #2293
    Sean Robinson
    Participant

    I cannot find a copy of that particular poster, just photos and videos in which that poster appears in the background.

    But, user “Stan” (smcshinsky) on the old forum created a similar poster
    that is still available at http://mastermapper.com/webmaps/Water%20shed.pdf

Viewing 15 posts - 16 through 30 (of 77 total)