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
BaseBitmaps.".
TIA,
Niklas
On 21/10/2015 at 01:37, xxxxxxxx wrote:
Hello,
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:
return
layer = tex.GetFirstLayer()
while layer is not None:
print(layer.GetName())
layer = layer.GetNext()
See also "Parsing PSD layers in MultipassBitmap".
best wishes,
Sebastian
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.
Cheers!
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?
Thanks,
-N
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()
newBitmap.Init(xres,yres,)
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")
newBitmap.Save(filename,c4d.FILTER_TIF)
if __name__=='__main__':
main()
-ScottA
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:
Hello,
as Scott pointed out the content of a PaintTexture can be read with GetPixelCnt(). See also "Bodypaint Layer Bitmap".
best wishes,
Sebastian