Cinema 4D Development

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  Cinema 4D R23 / macOS - pip install broken
  python issue r23 apple macos • • maxon  

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  Always use unique Module ID
  • maxon  

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  Read Before Posting
  general notes • • maxon  

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  How to Plugin Distribution
  • Taegi  

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  PYTHON - INPUT DELAI
  • Hugo BATTISTELLA  

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  ... I forget one important information : This is a Python Force Field
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  SOLVED PYSIDE FOR C4D PROBLEMS
  python r21 • • gheyret  

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  @zipit I just read this（Connect C4D with Tkinter） post，It does seem to help me Thank you again！
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  Detect closing of Document
  python api classic api application development • • lasselauch  

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  Hi @lasselauch, we talked about your problem this morning. There are two ways of looking at your question: You are interested in the event of a closing document (i.e. present progressive) and you want to react to that event by making some changes before this process is finalized (i.e. the document closed). As already stated yesterday by me, there is currently no way to do that in a GeDialog. You will need some kind of node for that. It is also noteworthy that currently CommandData is bugged in this regard in Python. As @mp5gosu already pointed out, MessageData is a really good way to go, unless you do not have already something like TagData plugin where you could squeeze in that functionality. You are interested in the state of the loaded documents list, i.e. if a document has closed (past tense), but not exactly when it happens. This is possible in a dialog. You already provided your own answer here (thanks for making it visible to everyone). The basic idea is just to build some hashmap/list to compare against what Cinema considers to be loaded documents. As an added note, you might want to look at GeDialog.Timer, which will let you execute things in fixed intervals, in order to get closer to the point of when something happened. This won't be to much of a performance strain if implemented carefully. Cheers, Ferdinand
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  UNSOLVED Plugin compiled on macOS Catalina for R23, not working on Big Sur?
  c++ r23 apple macos • • fwilleke80  

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  @fwilleke80 it is what I do in my build system, for every build. I automated my build system using Jenkins pipelines. But you can also just write bash scripts and batch files instead, since that is effectively what I do in Jenkins anyway. My code is all pulled from GitHub, project tool runs, all additional 3rd party libraries are built, plugins compiled, signed, zipped up, sent to apple for notarization and then uploaded to AWS S3 and my customers can automatically down the new updates after any new build is marked as published. Took a while to set up but is such a time saver in the end. I can build all my plugins for every version of C4D and have them available for customers with just one click. It’s a full rebuild every single time I press the button. https://Jenkins.io. Then look at pipelines.
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  UNSOLVED BaseLink crash and tracking PolygonObjects/InstanceObjects in cache
  c++ bug report general programming brainstorming • • ECHekman  

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  Hi @ECHekman unfortunately without code I can't see what's wrong so if you can share it it will be appreciated. However, keep in mind that only the generator is the owner of its cache meaning this generator can decide whenever it wants to rebuild it (even within a thread). I'm not sure of your final goal, but for render engine, for example, their approach is to have their own scene representation of the current scene and they are doing like: listen to EVMSG_CHANGE to know when something changed. traverse the scene, and track new/deleted obj or see if something changed with obj dirty bit. See Why are GUIDs not Globally unique for keeping track of objects, and Dirty States for dirty bits. If something changed, retrieve the cache and translate it into their Polygonal Representation Store this custom copy into their Custom scene Representation. Finally please for your next topic, use the Cinema 4D category if they are related directly to Cinema 4D development. Hope this message helps you, Cheers, Maxime.
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  UNSOLVED Drag and Drop "Command" from Treeview
  python api classic api issue application development limitation • • lasselauch  

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  Hi @lasselauch, thank you for reaching out to us. I'll answer/point out some stuff in bullet points: The error object has no attribute im_function indicates that you are returning an incorrect return value type for an overridden function/method. This rather cryptic message is a bug which will be resolved in the next update (see here and here for details). The method which you did implement incorrectly is TreeViewFunctions.SetDragObject (link) which has no return type (i.e. the return type None). You also misinterpreted the purpose of the method. It is there so that you can distinguish between internal and external drag operations by storing a reference to the object of an internal drag operation. There is also this nice posting made by @m_adam untangling the purposes of the TreeViewFunctions methods. About the core of your question: Your major misconception here is that you can just "replace" the drag object. Which is not what TreeViewFunctions is intended for. It is just a view model / interface layer between the TreeViewCustomGui logic and the data (layer) you want to be represented in that GUI. Cinema solves this internally with a special core message (COREMSG_COMMANDDRAGSIMULATION), but this unfortunately does not translate to Python, since it requires you to access the internal representation of a GeUserArea, which is not possible in Python. So your best bet would be to actually make the data you pass to TreeViewCustomGui.SetRoot() to be the actual PluginData nodes you want to drag. So that you are actually dragging a plugin node and not some stand in. There is however no guarantee that this will work, I would have to try that myself. Cheers, Ferdinand
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  UNSOLVED Loft incorrectly returning input objects
  r20 c++ sdk • • JohnThomas  

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  Thanks for the response. I'll spend some time looking into it. John Thomas
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  SOLVED WARNING: Unknown baselist allocator
  r20 c++ classic api • • fwilleke80  

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  I totally understand. Just wanted to know if it maybe points to something terribly dangerous. I'll just ignore it, then ;-) Cheers, Frank
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  DEFORMCACHE AND MATRIX ISSUE
  • mdr74  

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  Thanks a lot !!!. I will try it in the next days. I'm free for my personal projects only during weekends
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  SOLVED ZeroAxis R23 help
  python r23 • • peXel  

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  Hi @peXel, I am happy to help ;) It's really a pitty that there's no convert 2.7 to 3.7 script button for nonprogrammers :-) Actually there is one ;) It even comes with Python. We have also a migration guide. Cheers, Ferdinand
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  UNSOLVED CallCommand Select Connected is not working on R22
  python bug report s22 r23 • • mikeudin  

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  hi, The command is checking where you mouse cursor is, or what was the last manager to be active. If you use the regular command (U~W) you will have different result depending on where your mouse cursor is. It's the same for the CallCommand. So if you drag and drop the script manager icon to a palette, you will be able to execute the command and got the same result. Another workaround is to open a UV windows before calling the command. c4d.CallCommand(170103) This will make the UV manager to be the last active windows and your command will work as expected. But you will not be able to close that windows. I'll send an email to our devs to see if it's intended or not, specially when you are have UVMode activated. Cheers, Manuel
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  UNSOLVED Wrong random clone displayed issue
  python issue s22 r23 • • jochemdk  

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  @m_adam Hi Maxime, One additional remark + a question… I’m trying to build a minimum set of rules to avoid the dis/enabling of effectors if not really necessary. I can’t use moFlags to check whether a clone is visible or not, and that’s where the issue might be: 1_ Given the example in the previous post (with offset 2), the moFlags read something like [2,2,2,1,0,1,…..]. Flag 2 being “permanently disabled”. If it means that behind the scenes index 2 is totally ignored, this is where the problem might be… 2A_ So reading moFlags doesn’t give me the info I need. For the moSelections I was able to find the first index of an invisible clone via “baseSelection.GetAll(count)”. So everything fine here… 2B_ I’ve spend many hours trying to find a formula to find the (first) invisible clone with moWeights. Given any weight float value between 0 & 1, a clone gets invisible based on the strength & maximum value sliders (which are not limited and can go way past +/- 100%..). The question: What is the formula (with strength & maximum) to check whether a weighted clone gets invisible? Tia, Jochem (If you want I can start a new thread, but this is so closely related…) One function added in the script below: """ After some code I know which linearCloners have a moSel/Weight tag with the same name as the baseEffector selection string... Per effector - with visibility turned on - I run the func below to check what the minimal offset is (for multiple cloners) & return "update" True if the minOffset is >= the selection index where a clone gets invisible... The passed moSelDict has selection strings as keys & indices of an inexList as values. """ def checkUpd(effector, moSelDict): minOff = 999999 minSelIdx = 999998 for moInd in moSelDict[effector[c4d.ID_MG_BASEEFFECTOR_SELECTION]]: moObj = op[c4d.ID_USERDATA,5].ObjectFromIndex(doc,moInd) # moObj = cloner / index from a linearCloner in-exclusion list.. if moObj[c4d.MG_LINEAR_OFFSET] < minOff: minOff = moObj[c4d.MG_LINEAR_OFFSET] for tag in moObj.GetTags(): if tag.CheckType(1021338) and tag.GetName() == effector[c4d.ID_MG_BASEEFFECTOR_SELECTION]: # selection bs = mograph.GeGetMoDataSelection(tag) count = moObj[c4d.MG_LINEAR_COUNT] + moObj[c4d.MG_LINEAR_OFFSET] try: minSel = bs.GetAll(count).index(1) # << here is where I can find the correct (in)visible selection values for moSelections except ValueError: break # selectionTag with no selection.. if minSel < minSelIdx: minSelIdx = minSel break elif tag.CheckType(440000231) and tag.GetName() == effector[c4d.ID_MG_BASEEFFECTOR_SELECTION]: # weight strength = effector[c4d.ID_MG_BASEEFFECTOR_STRENGTH] maximum = effector[c4d.ID_MG_BASEEFFECTOR_MAXSTRENGTH] # WHAT IS THE FORMULA TO GET (IN)VISIBLE STATE OF A WEIGHTED CLONE, BASED ON THE 2 VALUES ABOVE?.. bs = mograph.GeGetMoDataWeights(tag) minSel = 999999 for w in range(len(bs)): if bs[w] > 0.0: # << this is of course not optimal :) minSel = w break if minSel < minSelIdx: minSelIdx = minSel break if minOff >= minSelIdx: return True return False Edit: It turns out I need a formula for the strength/maximum values for the moSelection version as well. I plotted some values (in excel:) for various combinations of strength/maximum with moSelections/moWeights. All show an exponential growth(/decay) curve... I know you're not supposed to write scripts for others, but if you've got some code lying around - it would be brilliant.
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  SOLVED DrawTexture related crashes
  c++ classic api issue r23 plugin migration • • C4DS  

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  @m_adam Thanks for that extra info. I had done a search in the documentation regarding DrawTexture but didn't see it listed in the API changes. Hence, I didn't expect its behaviour to have changed so drastically. I haven't worked with S22 nor R23 before, so I didn't look in detail about the DrawTexture documentation, since it wasn't listed as changed. May I encourage this to be added in API Changes ... as it is quite a big deal encountering this issue when all worked fine in R16 upto R21.
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  UNSOLVED Snap settings issues in R21/R23?
  python r21 api issue r23 • • Cairyn  

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  Hi @Cairyn, yes, writing snap tolerances to these tool specific containers is not being respected. And after some further investigations I have come to the conclusion, that most things written to document snap settings (even the global settings) will be ignored. A workaround, which oddly is also done by Cinema internally, is to just invoke the respective plugin command for the snap implementations. I will have to ask the modelling team on Monday, why things are implemented this way and subsequently why they did choose to keep the snap settings around in this manner. In the mean time please take a look at the script below, which shows you how to read and write to SNAP_SETTINGS_TOOL with this rather odd approach. Cheers, Ferdinand import c4d def main(): """How to weasel your way around SNAP_SETTINGS_TOOL. The same approach can be applied to other snap tools (basically everything you can turn on or off in the snapping tool bar). """ # Get the command state. state = c4d.IsCommandChecked((c4d.SNAP_SETTINGS_TOOL)) print ("Tool Specific is enabled:", state) # Toggle the command. c4d.CallCommand(c4d.SNAP_SETTINGS_TOOL) # Get the new command state. state = c4d.IsCommandChecked((c4d.SNAP_SETTINGS_TOOL)) print ("Tool Specific is enabled:", state) if __name__ == "__main__": main()
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  UNSOLVED Bitmap in a dialog... without surrounding space
  r20 c++ r21 api classic api s22 r23 • • fwilleke80  

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  Hi Manuel, thanks for getting back to me! The size of the bitmap you want to display ? It's 320x116 pixels. Do you want to bitmap to scale when you scale the GeDialog ? No. I rather want the dialog to be just wide enough to fit the bitmap in it. And that seems to happen automatically. Even if I open the dialog with a width of e.g. 100 px, it doesn't get any smaller than (width_of_bitmap + strange_gap * 2). Is it possible that it's a macOS-only issue? Maybe it's the radius of the windows' round corners that gets added to the size. Anyway, maybe this issue isn't worth spending more of your time on. Since it works with a ASYNC_POPUPEDIT style dialog, I think I can live with what I got.
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  Plugin is evaluated for all frames
  python r20 r21 s22 r23 • • pyr  

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  Hi @pyr, thank you for reaching out to us. I am afraid we will need a little bit more than that, as otherwise it will be very hard to answer your question ;) What kind of plugin do you implement? What does it do or what would you consider as running? On a very abstract level you cannot really prevent plugins from running other than not registering them at the start of the application. But you can of course modify their output depending on basically everything, including render events and at what time offset some given document is. Cheers, Ferdinand