Question How to correctly get the `line_width` value in custom plugin?

[andries_coastruction 0]

I am trying to use the value of `line_width` in my custom post-processor script, however, the value always returns 0.4, even if I change it to something else in the GUI.

I even tried a clean install with only one printer with everything set to something else than 0.4, however, I still get this value when querying line_width.

 

I use the following code (also attached as plugin):

from collections import OrderedDict

from UM.Extension import Extension
from UM.Application import Application
from UM.Settings.SettingDefinition import SettingDefinition
from UM.Settings.InstanceContainer import InstanceContainer
from UM.Settings.DefinitionContainer import DefinitionContainer
from UM.Settings.ContainerRegistry import ContainerRegistry
from UM.Logger import Logger


class TestPlugin(Extension):
    def log(self, level, message):
        Logger.log(level, f"TEST: {message}")

    def __init__(self):
        super().__init__()
        self._application = Application.getInstance()
        self._i18n_catalog = None
        self._application.getOutputDeviceManager().writeStarted.connect(self._filterGcode)

    def _filterGcode(self, output_device):
        scene = self._application.getController().getScene()

        self.log('d', "trying the global container")
        global_container_stack = self._application.getGlobalContainerStack()
        if not global_container_stack:
            self.log('d', "no global container stack found")
            return

        # get setting from Cura
        layer_height = global_container_stack.getProperty("layer_height", "value")
        self.log('d', f"Layer height: {layer_height}")

 

I suspect that I somehow the line_width in the global container stack has other values as well, however, I have very little idea of how the container structure is build up. Should I be using a different container? What am I doing wrong? And if somebody could explain to me, what is even a container??

TestPlugin.zip

Edited January 13, 2023 by andries_coastruction

[andries_coastruction 0]

Also when I try to query the machine name of my Custom FFF printer, i returns `Unknown`, even though it clearly has a name:

 

        machine_name = global_container_stack.getProperty("machine_name", "value")
        self.log('d', f"machine_name: {machine_name}")

prints:  `machine_name: Unknown.`

 

with the machine config looking like this:

[general]
version = 5
name = Idebroken 25_staiger
id = Idebroken 25_staiger

[metadata]
setting_version = 20
type = machine
group_id = 8df622d3-210a-459d-a213-265b216eeef4

[containers]
0 = Idebroken 25_staiger_user
1 = custom_waterprofile_t2.5_#2
2 = empty_intent
3 = empty_quality
4 = empty_material
5 = empty_variant
6 = Idebroken 25_staiger_settings
7 = custom

 

[Cuq 198]

Line_Width is not a Global parameter but it is linked with the Extruder Container.  ( Each Extruder can have a different line Width )

 

extrud = Application.getInstance().getGlobalContainerStack().extruderList
GetVal = extrud[id_ex].getProperty(key, "value")

 

Where id_ex is the number of the extruder if you have just one extruder id_ex = 0

[Cuq 198]

On 1/13/2023 at 11:26 AM, andries_coastruction said:

And if somebody could explain to me, what is even a container??

 

https://github.com/Ultimaker/Cura/wiki/Profiles-&-Settings

[andries_coastruction 0]

awesome! thanks! that sheds a lot of light on the matter. In general, I find the information for plugin development quite hard to find...

[Cuq 198]

Your Welcome , And If you want to have more information / Plugin example you can have a look to the Profil Analyse plugin  : https://marketplace.ultimaker.com/app/cura/plugins/5axes/ProfilAnalyser

 

And I'm Agree with you there is a huge gaps in knowledge and on documentation for Plugin creation.