Load MultipassBitmap [SOLVED]

  • On 20/10/2015 at 04:10, xxxxxxxx wrote:

    Hi there,

    I couldn't find a way to load a MultipassBitmap from a file. The constructor already requires to define the
    resolution and bitdepth of the MultipassBitmap. If I initialize it with 0, 0, 0 and use InitWith() (inherited
    from BaseBitmap), a StandardError is raised with the message "This operation can only handle


  • On 21/10/2015 at 01:37, xxxxxxxx wrote:


    to load images with layers you can use the functions of BodyPaint. Something like this:

    bc = c4d.BaseContainer()  
    bc.SetFilename(c4d.LOADTEXTURE_FILENAME, path)  
    tex = c4d.modules.bodypaint.SendPainterCommand(c4d.PAINTER_LOADTEXTURE, doc=doc, tex=None, bc=bc)  
    if tex is None:  
    layer = tex.GetFirstLayer()  
    while layer is not None:  
         layer = layer.GetNext()  

    See also "Parsing PSD layers in MultipassBitmap".

    best wishes,

  • On 21/10/2015 at 03:20, xxxxxxxx wrote:

    Thanks Sebastian, that should be sufficient for my purpose, I don't need it as a MultipassBitmap. :)
    Only that I'd like to show the image in the Picture Viewer, but I guess that won't work with a PaintTexture.


  • On 22/10/2015 at 10:09, xxxxxxxx wrote:

    Hey Sebastian, I just had some time to look at the bodypaint module and its classes. It seems like I can't
    read or write the pixels of a PaintLayerBmp. So there is no way to load an image with multiple layers and
    use that in Python?


  • On 22/10/2015 at 10:59, xxxxxxxx wrote:

    They're gone until Monday Niklas.
    But maybe this will help.

    #This script gets the color data from a BP layer and creates an image from it  
    #NOTE: GetSelectedTexture() is only supported in R16++  
    import c4d  
    def main() :  
      #Get the selected bp texture(Usually the image in a material)  
      tex = c4d.modules.bodypaint.PaintTexture.GetSelectedTexture()  
      texturename = tex.GetFilename()  
      #Get the active BP layers (the layer tab in the AM)  
      activelayer = tex.GetActive()  
      #If the active layer is holding a bitmap image  
      if activelayer.IsInstanceOf(c4d.OBJECT_PAINTLAYERBMP) == True:  
          #Convert the layer to an image and store it in memory  
          #Then get it's size values  
          bmp = activelayer.ToPaintLayerBmp()  
          xres = bmp.GetBw()  
          yres = bmp.GetBh()  
          size = xres * yres          
          if size == 0: return  
          #Get the color mode of the image that's in memory          
          colorMode = bmp.GetColorMode()     
          #Store some buffer like data into memory  
          sq = c4d.storage.ByteSeq(None, size*c4d.COLORBYTES_RGB)          
          inc = 3  
          #Read the color data in the image that's currently in memory  
          #Reminder: This image was gotten from a layer..Which was gotten from a channel in a material  
          for row in xrange(yres) :  
              offset = sq.GetOffset(row*(xres*inc))  
              bmp.GetPixelCnt(0, row, xres, offset, colorMode, c4d.PIXELCNT_0)   
          #Create a new image based on the color data we just got above  
          newBitmap = c4d.bitmaps.BaseBitmap()  
          for row in xrange(yres) :  
              offset = sq.GetOffset(row*(xres*inc))   
              newBitmap.SetPixelCnt(0, row, xres, offset, inc,colorMode, c4d.PIXELCNT_0)   
          #Save the image to a file on your HD  
          filename = c4d.storage.SaveDialog(title="Save Image")  
    if __name__=='__main__':  


  • On 22/10/2015 at 12:35, xxxxxxxx wrote:

    Hey Scott, thanks a lot for your example! I missed that GetPixelCnt() and SetPixelCnt() are for getting
    and setting pixel data (I find the names rather confusing for that purpose). Anyway, that is actually exactly
    what I needed. :)

  • On 22/10/2015 at 15:38, xxxxxxxx wrote:

    I couldn't get allocating a new  PaintTexture to work (was always size 0, 0). I also tried copying the 
    contents of the PaintTexture loaded with SendPainterCommand()  to a MultipassBitmap , but the result
    was just black. Also, I couldn't get layers to work with the MultipassBitmap. Although the layers were
    there (ie. were returned with .GetLayers()) the Picture Viewer didn't show them.

    I'll try it in C++ and see if it works there.

  • On 26/10/2015 at 01:49, xxxxxxxx wrote:


    as Scott pointed out the content of a PaintTexture can be read with GetPixelCnt(). See also "Bodypaint Layer Bitmap".

    best wishes,

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