Texture renaming

[PluginStudent]

Hey, you have two

def main():

in your code

[ferdinand]

Hi,

this also probably is not what you want:

# Check if it's a c4d shader
if c4d.BaseShader() :
    changeTexture(shader)

It will always evaluate as True since an object evaluates as True. You probably meant instead:

# Test if the current node is a bitmap shader.
if shader.CheckType(c4d.Xbitmap) :
    changeTexture(shader)

Cheers,
zipit

[moko]

Thank you for both inputs. Im not used to programming and copy and paste the lines. Thanks for the help!

[r_gigante]

Hi @moko, nice seeing your progresses.

With regard to adding a small GUI to return a specific string I warmly recommend having a look at c4d.gui.InputDialog.
Finally a consideration on copy and paste which looks always pretty attractive to reduce time to market: be aware that it's indeed the opposite where in the end you'll obtain a code you can manage no more. Spending time in investigating the basics and getting yourself comfortable with the code is always a rewarding time.

Best, R

[moko]

Thank you very much, right now i am quite happy how it works. only thing is the dialog box opens for each shader because its in the "changeshader" function wich repeats.
I d' like to have one gui-call at the start in the main function, but if i do that theni cant transport the "prefix" argument to the changeTexture(shader) function.

about the time investement i agree, but for this script was more an out of desperation approach in how cinema4d lacks in organizing textures, then a new grind in passion. the script helps me with a hack, to organize them on OS side, for team projects like for instance unity.

Best
Moko

import c4d
from c4d import gui
import os

#GUI
GROUP = 1000
TEXT = 1001
PREFIX = 1002
BTN_OK = 1010
BTN_CANCEL = 1020

class userDialog(gui.GeDialog):
    def CreateLayout(self):
        self.SetTitle("Add Prefix")
        self.GroupBegin(GROUP, c4d.BFH_SCALEFIT, 3,5, title = "Adds a prefix to the texturename")
        self.GroupBorder(c4d.BORDER_GROUP_IN)
        self.GroupBorderSpace(20, 5, 20 , 5)
        self.AddStaticText(TEXT, c4d.BFH_SCALEFIT, name="Prefix")
        self.AddEditText(PREFIX, c4d.BFH_SCALEFIT)
        self.AddButton(BTN_OK, c4d.BFH_SCALE, name="Ok")
        self.AddButton(BTN_CANCEL, c4d.BFH_SCALE, name="Cancel")
        self.GroupEnd()
        return True

    def InitValues(self):
        #initiate the gadgets with values
        self.SetString(PREFIX, "Tex_")
        return True

    def Command(self, id, msg):
        #handle user input
        if id==BTN_CANCEL:
          self.Close()
        elif id==BTN_OK:
          self.TexturPrefix = self.GetString(PREFIX)
          self.Close()
        return True


# Adds a prefix to the texturename
def changeTexture(shader) :
        
    dialog = userDialog()
    dialog.Open(c4d.DLG_TYPE_MODAL, defaultw=200, defaulth=50)
    
    prefix = dialog.TexturPrefix
    print (prefix)
    
    # shader ID
    texturePath = shader[c4d.BITMAPSHADER_FILENAME]
    # split aboslute path
    oldTexturename = os.path.split(texturePath)
    # add prefix
    newTexturename = prefix + oldTexturename[1]

    doc = shader.GetDocument()
    doc.AddUndo(c4d.UNDOTYPE_CHANGE, shader)

    # Assign the new value
    shader[c4d.BITMAPSHADER_FILENAME] = os.path.join(oldTexturename[0], newTexturename)
    shader.Message(c4d.MSG_UPDATE)


# Iterate a hierarchy
def recurse_hierarchy(shader) :
    while shader:
        # Test if the current node is a bitmap shader.
        if shader.CheckType(c4d.Xbitmap) :
            changeTexture(shader)
        recurse_hierarchy(shader.GetDown())
        shader = shader.GetNext()

# Main function
def main() :
    mats = doc.GetActiveMaterials()
    
    doc.StartUndo()
    # Iterate over selected material
    for mat in mats:
        recurse_hierarchy(mat.GetFirstShader())
    doc.EndUndo()


# Execute main()
if __name__=='__main__':
    main()

[moko]

Now it works as intended. You can select the materials for which you want to change the prefix of the texturename. The actual name of the texture is not changed. You need to do this with a renaming-tool at the OS level.

thanks to everyone

import c4d
from c4d import gui
import os

#GUI
GROUP = 1000
TEXT = 1001
PREFIX = 1002
BTN_OK = 1010
BTN_CANCEL = 1020

prefix = "placeholder"

class userDialog(gui.GeDialog):
    def CreateLayout(self):
        self.SetTitle("Add Prefix")
        self.GroupBegin(GROUP, c4d.BFH_SCALEFIT, 3,5, title = "Adds a prefix to the texturename")
        self.GroupBorder(c4d.BORDER_GROUP_IN)
        self.GroupBorderSpace(20, 5, 20 , 5)
        self.AddStaticText(TEXT, c4d.BFH_SCALEFIT, name="Prefix")
        self.AddEditText(PREFIX, c4d.BFH_SCALEFIT)
        self.AddButton(BTN_OK, c4d.BFH_SCALE, name="Ok")
        self.AddButton(BTN_CANCEL, c4d.BFH_SCALE, name="Cancel")
        self.GroupEnd()
        return True

    def InitValues(self):
        #initiate the gadgets with values
        self.SetString(PREFIX, "Tex_")
        return True

    def Command(self, id, msg):
        #handle user input
        if id==BTN_CANCEL:
          self.Close()
        elif id==BTN_OK:
          self.TexturPrefix = self.GetString(PREFIX)
          self.Close()
        return True


# Adds a prefix to the texturename
def changeTexture(shader) :


    print (prefix)

    # shader ID
    texturePath = shader[c4d.BITMAPSHADER_FILENAME]
    # split aboslute path
    oldTexturename = os.path.split(texturePath)
    # add prefix
    newTexturename = prefix + oldTexturename[1]

    doc = shader.GetDocument()
    doc.AddUndo(c4d.UNDOTYPE_CHANGE, shader)

    # Assign the new value
    shader[c4d.BITMAPSHADER_FILENAME] = os.path.join(oldTexturename[0], newTexturename)
    shader.Message(c4d.MSG_UPDATE)


# Iterate a hierarchy
def recurse_hierarchy(shader) :
    while shader:
        # Test if the current node is a bitmap shader.
        if shader.CheckType(c4d.Xbitmap) :
            changeTexture(shader)
        recurse_hierarchy(shader.GetDown())
        shader = shader.GetNext()

# Main function
def main() :
    mats = doc.GetActiveMaterials()

    dialog = userDialog()
    dialog.Open(c4d.DLG_TYPE_MODAL, defaultw=200, defaulth=50)

    global prefix
    prefix = dialog.TexturPrefix

    doc.StartUndo()
    # Iterate over selected material
    for mat in mats:
        recurse_hierarchy(mat.GetFirstShader())
    doc.EndUndo()


# Execute main()
if __name__=='__main__':
    main()

[ferdinand]

@moko said in Texture renaming:

The actual name of the texture is not changed. You need to do this with a renaming-tool at the OS level.

You can do this with os.rename() or with open if you want to save a copy. You probably also do not need your own GeDialog since yours does exactly what c4d.gui.RenameDialog does.

Cheers,
zipit

[moko]

@zipit Thank you! That was exactly i was looking for

here the new Version:
I throw out the undo function because i dont know if it can adress the os part. Is this possible to have an undo on os.rename?

import c4d
from c4d import gui
import os, sys

prefix="placeholder"

# Adds a prefix to the texturename
def changeTexture(shader):

    # shader ID
    texturePath = shader[c4d.BITMAPSHADER_FILENAME]

    # split aboslute path
    oldTexturename = os.path.split(texturePath)

    # add prefix to
    newTexturename = prefix + oldTexturename[1]
    print (newTexturename)

    newTexturePath = os.path.join(oldTexturename[0], newTexturename)
    print (newTexturePath)

    # rename texture

    try : 
        os.rename(texturePath, newTexturePath)
        print("Source path renamed to destination path successfully.") 

    except OSError as error: 
        print(error) 

    # Assign the new value
    shader[c4d.BITMAPSHADER_FILENAME] = newTexturePath
    shader.Message(c4d.MSG_UPDATE)


# Iterate a hierarchy
def recurse_hierarchy(shader) :
    while shader:
        # Test if the current node is a bitmap shader.
        if shader.CheckType(c4d.Xbitmap) :
            changeTexture(shader)
        recurse_hierarchy(shader.GetDown())
        shader = shader.GetNext()

# Main function
def main() :
    mats = doc.GetActiveMaterials()

    global prefix
    prefix = c4d.gui.RenameDialog("Prefix_")
    print (prefix)

    # Iterate over selected material
    for mat in mats:
        recurse_hierarchy(mat.GetFirstShader())

# Execute main()
if __name__=='__main__':
    main()

Cheers,
moko

[ferdinand]

Hi,

@moko said in Texture renaming:

I throw out the undo function because i dont know if it can adress the os part. Is this possible to have an undo on os.rename?

No, there is no Undo for os.rename. You could hook into the Undo APIs provided by Windows and MacOS, but that would be probably overly complicated and also very unsafe.

The easiest way to implement this, would be to create a dictionary of old_file_path and new_file_path key-value pairs and write to it every time you rename something. With that you could unwind renaming operations.

There are however multiple problems with this.

1. If I am not mistaken, your script has no safe-guard against the user renaming a texture multiple times and therefor rendering previous references invalid. This is a problem on its own, but it would also defeat the mentioned naive implementation of an Undo stack with a dictionary.
2. This would also require a persistently running piece of code, where you could store that dictionary. The script manager script and all its states just vanish once it has been executed. You would have at least provide a asynchronous dialog that can stay open until the user decides that he/she is done with the renaming (and undoing). Or a full blown plugin if you do not want to have a dialog dangling around. You could technically store your Undo data somewhere else, like for example in the scene or in the running Python instance, but this would fall into the domain of "hacks".
3. Also implementing a proper undo stack for renaming operations is not as trivial as it might seem, because you would also have to keep track of all modifications made to the tracked files, including these that are not made by you, and properly react to them, if you do not want the Undo feature causing potentially critical conflicts.

So all in all not really worth the hassle.

Cheers,
zipit

[moko]

@zipit

hm yes this sounds too complicated overall, particularly point 3 there could so much happen on the os side.
A gui with more options like renaming the hole texturename or a replace option of certain words could be the way forward. Instead of undo it would be easy then to rename the texture with he old name etc.
for now im happy how this works and let this solved.

Much Thanks!
Cheers,
moko