Topics created by owen

hi,

you have to save the document to memory and use the result to merge the document.
When you merge, you have to set the flags to what you want to merge, otherwise it will not merge what you want.

On this example i'm merging a document with another selected document.

import c4d from c4d import gui # Welcome to the world of Python # Main function def main(): obj = doc.GetActiveObject() if obj is None: return # Isolate the active object isolateDoc = c4d.documents.IsolateObjects(doc, [obj]) # Creates the Memory File Strcuture mfs = c4d.storage.MemoryFileStruct() # Sets the mfs to write mode mfs.SetMemoryWriteMode() # save the document to mfs c4d.documents.SaveDocument(isolateDoc, mfs, c4d.SAVEDOCUMENTFLAGS_DONTADDTORECENTLIST, c4d.FORMAT_C4DEXPORT) # retrieve the data data = mfs.GetData() # Set the MFS to read mode mfs.SetMemoryReadMode(data[0], data[1] ) flags = c4d.SCENEFILTER_OBJECTS | c4d.SCENEFILTER_MATERIALS # Load Document selectedFile = c4d.storage.LoadDialog() if selectedFile is None: return newDoc = c4d.documents.LoadDocument(selectedFile, flags) #Merge the isolated document with the current one. c4d.documents.MergeDocument(newDoc, mfs, flags) c4d.documents.InsertBaseDocument(newDoc) c4d.documents.SetActiveDocument(newDoc) # Execute main() if __name__=='__main__': main()

Cheers,
Manuel

hi,

you could also use LoadDocument

lowPoly = c4d.documents.LoadDocument("preset://Optimized_Assets.lib4d/Asset_Library.c4d", c4d.SCENEFILTER_OBJECTS | c4d.SCENEFILTER_MATERIALS)

As the documentation says:
Similar to LoadFile() but this time the document is not put into the editors list of documents and it gives control over the loaded document.

Cheers,
Manuel

Hi @owen, thanks for following up.

As @m_adam has already pointed out there's actually no difference in the values defininig a matrix representing a rotation on -30, -390, 330 or 690 on a certain axis.
The lifesafer in this case is to use the already mentioned GetOptimalAngle which actually provides you with the HPB vector that would minimize the rotation given the previous HPB and the current HPB.

For the sake of completeness let's assume that at frame 0 H = 0 whilst at frame 1 H = -5.

Running the following code just returns the "expected" HPB vector

def main(): # set the lastHPB to the previous frame value (in this case zero) lastHPB = c4d.Vector(0,0,0) # retrieve the current rotation order rotOrder = op.GetRotationOrder() # convert from matrix to HPB representation currentHPB = c4d.utils.MatrixToHPB(op.GetMg(), rotOrder) # get the optimal HPB vector optimalHPB = c4d.utils.GetOptimalAngle(lastHPB, currentHPB, rotOrder) print optimalHPB

Now using this strategy and knowing the HPB of a clone at the previous frame, you are able to obtain a meaningful HPB representing of the matrix describing the rotation at the current frame of a certain clone (or object).

Best, Riccardo

Thanks so much this is exactly what I was looking for.

Hello and welcome,

what exactly do you mean with "export keyframe data"? Do you want to write data into a file? The best way to develop such code would be in a Python script that you can edit and execute in the Script Manager. A XPresso Python node is meant to contain code that is executed as part of XPresso to define the behavior of the XPresso network. A XPresso Python node should not be used to modify the scene or to perform I/O operations.

A CTrack object stores the DescID of the associated parameter. You can access that DescID with GetDescriptionID().

Alternatively you can use BaseList2D.FindCTrack() to search for the CTrack associated with a certain parameter DescID. You find an example on GitHub.

You find general information on how to use CTrack and DescID also in the C++ documentation:

CTrack Manual DescID Manual

best wishes,
Sebastian