Jot Exporter for Blender

Jot is a very cool standalone WYSIWYG interactive stylized renderer, developed at Princeton University around 2002-03. It has some unique features that make it very interesting even now, more than 10 years later.

Model of David by gabrielmda

Model of David by gabrielmda rendered in Jot

Jot can render stylized silhouettes of animated 3D models with temporal coherence, which means the lines don’t jiggle or flicker as the model moves. How the outline is rendered is defined by drawing a sample line, and applying the same style to the whole model. In addition, Jot has support for hatching and drawing in details at different levels of detail, plus some basic surface shading.

Jot works in real-time using OpenGL, so the artist can instantly see what she is doing. This means that rendering is extremely fast, as it’s simply a question of stepping through the frames, and writing out images.

Unfortunately Jot hasn’t been actively developed for years, and there has been no easy way to get your models and animation into Jot for years, until now. That where my  Jot Exporter for Blender comes in. It let’s you export your models and animation from Blender 2.6x to Jot. It’s still very much in beta, but as far as I know everything works (see limitations below). My hope is that this exporter will bring renewed interest in Jot, and maybe one day we’ll see it brought back to life.

Below is a video from Siggraph 2002, that demonstrates some of the features of Jot.

Installation

You can get Jot for Windows from here (it can run under Wine, see below) and the source code for it here. It includes some documentation, tutorials and sample files to get you started.

  1. Download the Jot exporter here and extract it (older versions here).
  2. Copy the io_export_jot folder to your blender addons folder (blender/2.66/scripts/addons).
  3. Hit F8 to reload addons in Blender and go to File>User Preferences, and look for “Export to Jot stylized render” under the Addons tab and activate it.
  4. Now you should have a new entry for exporting to Jot in you File>Export menu.

Exporting Your Models and Animation to Jot

Exporting you models to Jot is pretty straight forward.

  1. Select the models you want to export. You don’t need to select the camera, as the active camera gets exported automatically. Only select geometry, as selecting armatures, lattices and other objects, will likely break the export.
  2. Choose File>Export>Jot Stylized Renderer (.jot)
  3. If you want to export animation, check the Export Animation checkbox on the left hand side, and choose a frame range. Also make sure to create a folder for the exported animation, as the exporter creates several files for each frame of animation, often resulting in literally hundreds of files.
  4. Give your export a name, and hit Export JOT. For long animations, or lots of polygons, this can take a short while.

The size of the viewport in Jot, depends on the render resolution you set in Blender.

Running Jot on Windows

Even though jot was written back around 2003, it still runs fine one Windows XP, 7 and 8 (I haven’t tested it on vista), and on 64-bit systems. I’ve tested it with Intel, ATI/AMD and Nvidia graphics card, and all work, though on the old integrated Intel card in my laptop it’s really slow. Read the instructions in the README.txt file that comes with Jot on how to run it.

Note! If you have an Nvidia card with Optimus technology (most recent mobile Nvidia cards have this), you need to right click “jot-cmd” and choose “Run with Nvidia Graphics”. Thanks to David Kolb for pointing this out.

Running Jot on Linux

If you happen to be a skilled C++ developer, I’m sure you can figure out how to compile it from source. It was originally written to support both Linux and OSX, but I’ve yet to get it to compile on my 64-bit Linux.

Luckily, Jot can run under Wine. To simplify running Jot on Linux I’ve written a little shell script that helps launch it. You can download it from here. I’ve tested it on Ubuntu 12.04, but it should work on other distros.

You need Wine installed with working OpenGL, and a copy of  Jot. The script assumes the Jot unpacked in your home folder. If you’ve placed Jot somewhere else, just open the script in a text editor and follow the instructions there. Next place the script somewhere in PATH, such as /usr/local/bin/. Now you can run jot directly from the terminal, by simply typing ‘jot YOUR_FILE.jot’.

It’s also possible to run Jot manually, though the process is a little bit more convoluted.

  1. Download the Windows version of jot, and place it where you prefer (~/.wine/drive_c/jot for instance).
  2. Edit jot/batch/config, so the line that says “set JOT_ROOT=C:\rkalnins\jot-distrib-test\jot” points to where you placed you jot folder (e.g. “set JOT_ROOT=C:\jot” if you placed it in ~/.wine/drive_c/jot)
  3. Start a command prompt (cmd.exe) in wine. One Ubuntu 12.04 this would be
    - wine /usr/lib/i386-linux-gnu/wine/fakedlls/cmd.exe
  4. You now have a windows command prompt. Use it to got into the batch folder, and run the jot-config.bat
    - C:
    - cd C:\jot\batch
    - jot-config.bat
  5. Go a folder you’ve exported your models or animation to in cmd.exe, and run:
    - jotq yourfile.jot

This should open up your file in Jot. While it does work, it outputs a lot of errors to the terminal. You can improve the frame rate a little by hiding the terminal.

This was tested on Ubuntu 12.04, 64-bit, using Wine 1.4.

Updating Your Animation

When you save changes in Jot, it writes out a .npr file. This file stores all the annotation information you’ve added in Jot. The exporter does not create this file, which means that you can modify your animation in Blender, and re-export, and the drawing you’ve done in Jot will remain intact. Note that Jot uses the file and the model names to know which annotation to apply to which model, so if you rename your file or models, this will not work correctly.

Rendering Your Animation

To render out a still, simply hit ‘g’ in the Jot viewport. This should write out a png image in the folder you started jot from.

To render out animation, you need to do the following.

  1. Hit ‘X’ (capital X), to engage animation mode.
  2. Hit ‘-’ (dash), to engage time sync.
  3. Hit ‘*’ (asterix), to set it to render to file.
  4. Hit ‘/’ to play back the animation, which will write a png file to disk for each frame.

If you would rather use Cycles or Blender’s Internal renderer, for the surface, you can render only the outlines only by making the basecoat transparent:

  1. Use Next Mode button to get to the Basecoat Editor.
  2. Select your model by clicking on it.
  3. In the Basecoat Editor hit the ‘Add’ button to add a Normal material.
  4. Un-check the ‘Transparency to Background’ check box.
  5. Slide the Alpha slider to zero.

Known Limitations

If you find any bugs, please feel free to comment below.

Reference

51 responses to Jot Exporter for Blender

  1. Pingback: Jot Exporter for Blender | BlenderNation

  2. Mike said:

    Is it possible to save the result to an image file and if so could you please tell me how cause I can’t find anything in the documentation ? Thank you.

    • admin said:

      Yes, it’s possible to output as image files, but there are a couple of limitations. Firstly, you need to export the models as animation from Blender. If it’s a still, choose animation, and just export from frame 1 to 1. Secondly, the output will be same size as your Jot viewport, and it doesn’t work to make it larger than you computer screen.

      To actually export images, while in Jot’s viewport you need to hit ‘X’ (capital X), to engage animation mode, hit ‘-’ to engage time sync, hit ‘*’ to set it to render to file, and finally hit ‘/’ to play back the animation. You should now find some .png files alongside your Jot file. It’s not exactly user friendly. :)

      You can find some more info about it in the animation tutorial that comes with Jot.

  3. skuax said:

    hey i didn’t heard about it before. It’s sound very interesting. I’ gonna try to have a look on it.
    thank you very much.

  4. david kolb said:

    I don’t understand what the “read me” means??? How do I install this program on Windows 7 64 bit??? Sorry but I don’t have much experience doing this kind of thing. Thank You

    • admin said:

      There is a README.txt file in the jot-1.0.0.zip file you downloaded from http://jot.cs.princeton.edu/ It explains how to run jot, but it’s admitedly not very straight forward.

      Jot does run on Win7 64-bit, and even on Win8 64-bit, so that’s not the problem. You need basic familiarity with the command prompt commands on Windows to run it (i.e. “cd”=change directory and “dir”=list what is in this directory).

      If you unzip (right click>Extract here) the jot-1.0.0.zip file to C:\jot. Then go into C:\jot\batch and edit jot-config.bat using notepad (right clicking it and choosing Edit should work).

      Replace the “set JOT_ROOT=C:\rkalnins\jot-distrib-test\jot” line with “set JOT_ROOT=C:\jot”

      This tells your command line where to find jot.

      Now right click jot-cmd (in C:\jot), and choose Properties. Where it says Target, it should be pointing to C:\jot\batch\jot-config.bat (I’m not sitting on a computer running Jot now, so this is from memory, but it should make sense when you see the path).

      From there on you can follow the steps from the README.txt file, which are:

      (1) Double click ‘jot-cmd’ shortcut to launch command line.
      (Should open to JOT_ROOT directory and jot welcome prompt…)

      (2) Type ‘cd manual\tutorials\tutorial-1\’

      (3) Type ‘jotq cactus-1.jot’

      (4) Follow the tutorial in the manual…

      • david kolb said:

        Not working. I tried your instructions, but I’ve never dones this before. I extracted to C:\jot, i went into the batch file and right clicked the jot-config and then clicked edtit, where I deleted the set JOT line and out in its place “set JOT_ROOT=C:\jot” then I right clicked the jot-cmd shortct and went into properties, the target was %SystemRoot%\system32\cmd.exe /k C:\rkalnins\jot-distrib-test\jot\batch\jot-config.bat. I deleted it and put in its place C:\jot\batch\jot-config.bat it didn’t work. I sure would like to run this program and I thank you for trying to help, could you please try again!

        • david kolb said:

          oh by the way I after editing jot-config I did save it.

        • admin said:

          The target should be:

          %SystemRoot%\system32\cmd.exe /k C:\jot\batch\jot-config.bat

          That should hopefully work.

          • david kolb said:

            I think I followed your instructions correctly, but when I double click jot-cmd shortcut to launch command line it says The system cannot find the path specified.

            C:\jot\jot>

  5. david kolb said:

    Ok I got a further clue from the jot website manual and I added another jot\ to the target you gave like this
    %SystemRoot%\system32\cmd.exe /k C:\jot\jot\batch\jot-config.bat and then trie again to double click the jot-cmd and I got the welcome prompt, then I just typed ‘cd manual\tutorials\tutorial-1\’ but nothing happens, what do I do now? What am I missing here? ok i tried then pressing enter and it said like this . Welcome to the Jot command line
    : ===============================
    :
    : See .\README.txt…
    :
    : See .\manual\html\book1.htm

    C:\jot>’cd manual\tutorials\tutorial-1\
    ”cd’ is not recognized as an internal or external command,
    operable program or batch file.

    C:\jot>

    • admin said:

      You’re almost there. :)

      If you got that far, you should be able to enter just

      jotq

      And Jot should start, without loading any models. Then at least you’ll know you have got the program itself working.

      After closing Jot, you can try the following in the jot-cmd prompt:

      chdir manual\tutorials\tutorial-1
      jotq cactus-1.jot

      Note that “cd” and “chdir” are really the same command. After running the first command, your command prompt should look like so:

      C:\jot\manual\tutorials\tutorial-1>

      This is the folder you’re in. To see what is in a folder you can simply run “dir”. So if chdir doesn’t work, you can do it one step at a time (e.g. first doing “chdir manual” then doing “chdir tutorials” and so on, making sure you have the folder you want to enter each step of the way). To go up a folder simply run:

      chdir ..

      • david kolb said:

        First I want to thank you for your patience! I have now been able, by following your new instructions that you posted in blendernation, to get jot to open with the cactus-1, but it doesn’t seem to be behaving like the manual says. when I select the cactus it doesn’t turn red, but if I left mouse double click it turns red with green dots on the red line, I can draw black lines, but NPR stroke editor just remains blank. Am I doing something wrong? I have gone over the manual and there is no indication that I can see of why the NPR editor doesn’t function.??? I do hope you’ll have further patience with me. Thank you!

        • david kolb said:

          just to clarify my last comment,,,,I enter into jot-cmd
          cd manual\tutorials\tutorial-1
          dir
          jotq cactus-1.jot
          the program opens with a cactus, but no tutorial, and the NPR stroke editor does nothing.

          • david kolb said:

            I looked at the mechanical tutorial… and when I press v to bring up the global parameters that allso is just blank??? There is no way to adjust color or paper,,, there is no controls, just a blank window that says global parameters and the npr stroke editor window is the same…What am I doing wrong here, is it me or is the program not functioning correctly? Please HELP!!!

          • david kolb said:

            Ok the tutorials are in the manual…I looked at the mechanical tutorial… and when I press v to bring up the global parameters that allso is just blank??? There is no way to adjust color or paper,,, there is no controls, just a blank window that says global parameters and the npr stroke editor window is the same…What am I doing wrong here, is it me or is the program not functioning correctly? Please HELP!!!

  6. admin said:

    Here is a copy of what I posted on Blender Nation, to get Jot running on WinXP. The procedure is basically the same on WinXp, Vista, 7 and 8.

    I’m doing this step-by-step on my WinXP laptop right now, just to make sure I don’t miss any steps. :)
    - Download jot.
    - Extract the jot-1.0.0.zip file (you can double click it, and drag the jot folder within to the root of your C: drive).
    - Open you C:\jot\batch folder in Windows Explorer.
    - Right click jot-config.bat and choose Edit.
    - It should open in Notepad. Change line 7, where it says set JOT_ROOT=C:\rkaln…. to:
    set JOT_ROOT=C:\jot
    - Go up one folder in Windows Explorer and right click jot-cmd, and choose Properties.
    - The Target field should read.
    %SystemRoot%\system32\cmd.exe /k C:\jot\batch\jot-config.bat
    - NOTE use the arrow keys to get to the beginning of the Target line, by default it displays just the end of such a long string.
    - Hit OK to close the properties.
    - Now double click jot-cmd to run it.
    - A command line should open where it says “Welcome to the Jot command line”
    - Enter:
    cd manual\tutorials\tutorial-1
    - Enter:
    dir
    - It should now list 8 cactus jot files. Enter:
    jotq cactus-1.jot

    Now jot should start with the model of a cactus loaded.

    Hope that helps. :)

  7. Frank Heifer said:

    thank you for sharing,just installed, i am in a first-try with it, nice idea the blender exporter,very cool, it´s worth to try.exported some cubes and icospheres, animation from blender, running fine in win 7 64 & blender 2.66,(gpu: nvidia gtx 560ti/ cpu:intel i5 2500) and imported in jot, with no problems,at the moment.

  8. Blaine Cooperfield said:

    Any hope of a version for Mac OS in the future?

    • admin said:

      I hope so. I just wrote the Blender Exporter, and haven’t actually been able to compile Jot itself on Linux, but if we get as far as to get it to compile on Linux, it should be possible to get a Mac version working too. There is reference in the source code to both Linux and Mac OS, so it’s definitely not impossible.

  9. david kolb said:

    It’s occurred to me that possibly the original instructions involving the extraction of the zip. to c:/jot did’nt work unless I added another \jot to the target, but it worked when I just dragged the main jot folder in the zip to the C root is because I have windows 7 professional, could that be? Is the filing root system slightly different in windows profesional? could it be that the program does not function properly in windows 7 professional? I really have no Idea, but I’d really love to run this program. And I’d like to know why I can’t get it to work when other people have it working in windows 7 64 bit with no problems.
    For me the NPR stroke editor window and the global parameters window are just blank, and nothing I do will activate them. And boy this is frustrating, to the point of I don’t know whether to laugh or cry about it. I’ve been doing both!

    • admin said:

      Before switching to Win8 Pro, I was using Win7 Pro 64-bit, so your version of Windows shouldn’t be a problem.

      When you say the NPR Stroke Editor window is blank, do you mean there is literally nothing in it, no buttons or sliders, or that it’s just all grayed out and you can’t click them.

      If they’re all grayed out, you need to click on the model of the cactus, which should then show up as an outline with a gray box around it. Then click on the outline of the cactus, which should become a red and green dotted line. Now you can for instance expand “Stroke Color/Texture” by clicking on it, and start playing around with the sliders. Hit “Apply Current”, to apply it to the model.

      If, in fact, the window is completely blank, but you can see the cactus, then I really don’t know what’s going on. Usually it either runs fine, if everything is configured correctly, or it doesn’t run at all. :(

      Let me know how it goes.

      • david kolb said:

        the NPR window is just blank white, it says NPR stroke editor on the upper border of the window, but the window itself is just white blank, no greyed out controls. I get the cactus in the WYSIWYG NPR window, its at first in flat shading, I click on it, then its a black outline in a grey box, then when I click on it again its red and green dots, but through out all this the NPR stroke editor window just remains blank white, and if I click v in the other window, the Global parameters window appears also only in blank white! And nothing I do will activate these windows. You don’t have any clue why there is this behavior?? I’m going to try to download the program again and install it again. Thank you for all your attention!

        • david kolb said:

          I deleted jot and again downloaded it and re-installed it and again its the samething. The NPR stroke editor just remains blank white, the cactus is there like before it becomes red and green when selected I can draw lines on it, but the stroke editor remains blank white??????, there’s gotta be some reason for this behavior? I followed the installation instructions perfectly. Any clues will be appreciated! Thanks

          • david kolb said:

            After I select the cactus and its red and green dots, if I click on different places on the blank NPR stroke editor it has different effects on the cactus, the lines change color and style, but I don`t see any controls, the stroke editor is blank white! Very strange!

  10. admin said:

    I’ve added a short tutorial here http://ragnarb.com/running-jot-on-windows/ on how to get Jot up and running on Windows.

  11. david kolb said:

    P.S. I have Nvidia 680m graphics card, if that has any bearing?.

  12. Terry Struven said:

    Really nice article, thanks Ragnar! I was struck by all the possibilities. If you don’t mind, I’ll play around with the software for a while…

  13. francesco said:

    I was able to compile the source both on 32bit and 64bit ubuntu linux, It runs but it seems quite unstable and not all the features appear to be available or work as expected

    • admin said:

      Great. Care to share how you went about it?

      Did you need to do changes to the source code?

      • francesco said:

        in order to compile on 64 bit you have to change a lot of pointer-to-int or to uint casting usign intptr_t or uintptr_t casting, on 32bit the source compiles almost without modifications, but unfortunately on both platforms I get a strange “tag” related error when you load a .jot file. You can load a .obj file anyway, but there are a lot of things not working as expected, for example I was not able to find the stroke-editing window and other features seem unavailable, and besides there are way too many warning during compilation

        • Jehan said:

          Hi,

          could you upload a patch somewhere of your modifications? Even if it is not perfect, that could be a good start to incrementally fix this. At least you have something which compiles. :-)

          I have not looked at anything closely in the code yet, but I get an error already in the Makefile itself on my 64 bit Linux machine, immediately after `make`.

          $ make
          Makefile:4: *** mixed implicit and normal rules. Stop.

          If I could start with something a little further down the road, that would be less depressing. :-)

          Thanks!

          • Jehan said:

            Actually I got everything to compile but I am blocked at the linking steps, where I have a whole bunch of errors.
            I’ll need to go to sleep now. Hopefully I’ll find solutions later, but I am still interested by your patch. :-)

        • Jehan said:

          Ok I finally managed to get it to compile and link. But same as you, I get the tag errors when I try to load a jot file (even one provided with the code).

          Also the UI looks different in the linux compared to the windows binary.

          Finally you say you can load .obj file. Where did you read about this? I tried to export a .obj from a blender project, and I could not load it in jot.

          In any case, I am really wondering if trying to fix this whole mess is just a waste of time or if it is interesting, considering that it made me discover the freestyle project, and in particular its integration in blender (work in progress). And both software seem basically for the same purpose.
          Has anyone tried freestyle, here? I read that maybe jot would be nicer for artists, the easy way you can customize your 3D objects; whereas freestyle may be more towards coders. Is that true?
          I admit the jot video above is impressive. Isn’t it really possible with freestyle? Because I also saw some very interesting non-realistic rendering on freestyle blog.

          Basically the idea is that if jot is really doing “something else”, well it’s worth continuing and try and hack this code. If all what it does has been redone by freestyle (or else “will” be done by freestyle), well I guess I would not continue to mess with this code. Though I believe in diversity of projects, so if anyone else were to clean out this code, I am all for it! :-)

  14. Davonne Dupart said:

    Can you run Jot on a MAC at all?

    • admin said:

      In theory, yes it should be possible to run it on a MAC, but I haven’t tested it and it’s not straight forward. What you need to do is install Wine, and then follow the Linux instructions for running it.

      The easiest way is probably to first install Homebrew http://mxcl.github.io/homebrew/ and then run “brew install wine”. It might require additional steps, but I haven’t had a chance to try this out on a Mac myself.

  15. Here is the first test I did with your export Addon:
    https://vimeo.com/63894203
    Thanks a lot, it’s working great so far.

  16. Eli said:

    Hello, I’m very interested to work with jot unfortunatly if I export as animation with the blender exporter it result in a blank/empty view (tris/sec 0). if I export as still I can display but I cannot render because it needs to be animated to render afaik.
    I’ve tested it both under wine and virtualized win7.
    Another problem I saw is with a file: even if I select just the mesh to export, not selecting animation during export, when I open it in jot the toolbox window doesn’t open at all. Still have to understand wich condition triggers this if you want I can send you the file.
    Hope you can tell me what’s wrong I wonder how matthiew has been able to use and produce that video I’m impatient to make it work!
    thanks

    • admin said:

      You can send me the file to me at bug (a) ragnarb.com and I can try to get it working.

      There was one other person having trouble with the interface not showing in Jot on Windows 7, though I’m not sure if he managed to figure it out. I was unable to recreate it here, running under Wine 1.4 under Ubuntu 12.04, on Win8 and WinXP, on two different machines.

      • Eli said:

        done sent you two test scene

        • admin said:

          I tested your sol1.blend file. The problem with the toolbox window not showing seems to be the resolution. When I exported it first, the toolbox didn’t show either. When I reduced the resolution 50px below my screen resolution, I got the toolbox back. It’s kind of an annoying limitation, as you’ll need a screen that can display a bit more than HD (1920×1080), to render out full HD from Jot.

          I was able to export the scene as animation. The only change I did to the scene, was reducing the resolution and setting the frame range to 2 frames, rather than 100, and it showed up fine in jot and I could render it out without a problem.

          I’ve sent you the jot files, so you can try them out.

          • admin said:

            Just discovered a much easier way to render out stills, when trying to find out what the keyboard shortcuts used in jot are. :)

            You don’t actually need to export the file as animation, just hit ‘g’ in the 3D viewport in Jot, and it will write out a png file.

  17. I’m currently writing a tutorial about jot, and I was wondering if you managed to use the following function shown on the video:
    -hatches that simulate shadows and highlights and move accordingly

    By the way, do you manage to get pressure sensitivity of the tablet (doesn’t affect neither width nor alpha for me)
    I’m using Jot on linuxmint14 64 bit

    • admin said:

      It’s cool that you’re doing a tutorial. I’ve already seen a few people making stuff with Jot, which is very cool.

      That said, I can’t be of much help. I haven’t figured out how they did the shadow and highlight hatching, nor have I gotten pressure to work. There is a check-box to enable pressure for width and opacity, but they don’t seem to have any effect. I tested it on Win8.

  18. Jehan said:

    Hey so I converted a git repository out of the original svn.

    $ git clone git://git.tuxfamily.org/gitroot/jot/jot.git

    There is my initial fixes which allows to compile on Linux 64 bits, and you get the native UI running, thought right now the jot files won’t load. So that’s still useless. But I make a call to the community to help me fix this code and have it compiling and working under Linux, but also any other system (I’ll accept patches which makes it better whatever your system is).
    You’ll find my email address in the README I added in the repository. You can send me patches there.
    Thanks all!

    • Elliott said:

      Hey, I think I did just about the same stuff as you did. And I think I’m stuck at right about the place you are, with it running but not loading anything.

      The difference is that I changed the build system to CMake and removed some extra external libraries, though I’ve not quite finished that. I think you may have missed a few more changes to uintptr_t as well (I don’t know why the compiler won’t warn about them).

      It’s available here:
      https://github.com/QuLogic/jot-lib

  19. Kåre said:

    Am I the only one who find it very difficult to navigate in the jot viewport. For me it seems as if the exported object is turned 90 degrees compared to how it should be. It looks fine just as I open it, but as soon as I start to rotate it “jumps” to the wrong orientation.
    Nice NPR renderer though – I love the speed compared to freestyle.
    Oh, another thing: is it possible to assign a certain style to many objects at the same time?

  20. Ganeshdas said:

    Namaste Ragnar,,,,Once one has exported a model from blender how is it then opened in jot. I put the Jot file of the exported model in to the models folder of Jot, but cant’t figure out how to get it open. Thanks for any help you can give!

    • admin said:

      Assuming you are on windows, you start by double clicking jot-cmd.

      This opens a command prompt. You will need to navigate to your file using the command prompt. To enter the models forlder enter “cd models” (you can use “dir” to list what is in the folder you’re in, and “cd ..” to go up one folder).

      Once you’re in the same folder as your file, you simply enter. “jotq yourfile.jot”, where yourfile.jot is the name of your exported jot file.

      Unfortunately there is no menu for loading files within Jot, you need to point to it when you start jot.

  21. david kolb said:

    Hi ragnar, I finally got jot working with the NPR stroke editor showing properly, instead of just blank white. I have to first right click the jot cmd file and then select run with nvidia graphics processer. Funny it wouldn’t work when I selected the jot cmd to run on the nvidia card from the nvidia control panel. Anyways, I’ve done the tutorials, and now I need detailed instructions on how to open a blender file that I’ve exported with the addon, into Jot. Thanks alot!!!

    • admin said:

      Great that you got it to run. Now I get why you were having such a hard time getting it to run. You’ve got the 680M card, which is the mobile version with Optimus. Presumably it was just starting Jot using the low-end battery saving part of the Nvidia card, that seemingly doesn’t support OpenGL properly. I hadn’t tested it on an Optimus card, and don’t even have the “Run with Nvidia Graphics” option in the right click menu.

      As for opening your Blender file, you do it basically the same way you open the tutorial files. You double click jot-cmd, and then navigate to where you exported your file using the command prompt. For instance if you put them in the models folder you can enter “cd models”, you can use “dir” to view the content of a folder and “cd ..” to go up one folder.

      Once you find you file, you run “jotq yourfile.jot” to load it in Jot, of course replacing yourfile.jot with the name of your file.

      If you export an animation, it will consist of several files for each frame. Here you still just load the .jot file, it will pick up all the others as needed.

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