Image from Rasterized2DLayer.render/Layer

[ajw287]

I've finally got around to setting up your v2.0 code - it looks really good! Thanks for your updated documents - I know its not exciting, but they really helped me to get going.

So I'm planning to sunset the multi-backend version that I've been developing of diffgerber and concentrate on using pygerber 2.0 (it reduced the import code length by ~90%!) and will let me build an application that caters to the API properly without lots of redevelopment.

For my purposes it would be better to just use an Image object in the GUI (since both tk and pygerber use pillow). I got this working by using:

            out =  Rasterized2DLayer(
                options=Rasterized2DLayerParams(
                        dpi=300,
                        source_path=file_path,
                        colors=cunning_scheme,
                ),
            )
            layerImage =  out.render()._result_handle.result

This code seems to work, but the images are flipped vertically. It's not a problem as I can flip it in my code, but it implies that I'm probably missing something.

[ajw287]

P.S. I am apparently giving a talk about diffgerber at KiCON '23! (I'd applied a while ago, but nobody confirmed with me! ... I just saw it in the schedule!). Is there anything that you want said about pygerber? I am planning on talking about how I added three back ends and struggled with each, then pygerber 2.0 came out, so I'm looking to use that exclusively.

Also, I might not have installed pygerber properly. When running your demo code I had to change the imports to:

from pygerber.gerberx3.api import ColorScheme
from pygerber.gerberx3.api._layers import (
      Rasterized2DLayer,
      Rasterized2DLayerParams,
)

I don't know why.

[Argmaster]

I've finally got around to setting up your v2.0 code - it looks really good! Thanks for your updated documents - I know its not exciting, but they really helped me to get going.

I'm happy that it was readable enough.

So I'm planning to sunset the multi-backend version that I've been developing of diffgerber and concentrate on using pygerber 2.0 (it reduced the import code length by ~90%!) and will let me build an application that caters to the API properly without lots of redevelopment.

For my purposes it would be better to just use an Image object in the GUI (since both tk and pygerber use pillow). I got this working by using:

            out =  Rasterized2DLayer(
                options=Rasterized2DLayerParams(
                        dpi=300,
                        source_path=file_path,
                        colors=cunning_scheme,
                ),
            )
            layerImage =  out.render()._result_handle.result

This code seems to work, but the images are flipped vertically. It's not a problem as I can flip it in my code, but it implies that I'm probably missing something.

Images are flipped vertically because Pillow (0,0) point is top left corner of image, therefore point (100, 0) will be below (200, 0). Internally PyGerber is also flipping them.

What you could do is saving image into BufferIO, like in this test.

I will add get_image() method to RenderingResult in 2.0.0rc3

[Argmaster]

P.S. I am apparently giving a talk about diffgerber at KiCON '23! (I'd applied a while ago, but nobody confirmed with me! ... I just saw it in the schedule!). Is there anything that you want said about pygerber? I am planning on talking about how I added three back ends and struggled with each, then pygerber 2.0 came out, so I'm looking to use that exclusively.

I don't have anything particular in mid, but it would be great if you would mention it there.

Also, I might not have installed pygerber properly. When running your demo code I had to change the imports to:

from pygerber.gerberx3.api import ColorScheme
from pygerber.gerberx3.api._layers import (
      Rasterized2DLayer,
      Rasterized2DLayerParams,
)

I don't know why.

Please share error traceback and pip show pygerber.

[ajw287]

Please share error traceback and pip show pygerber.

Traceback:

$ python
Python 3.10.12 (main, Jun 11 2023, 05:26:28) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from pygerber.gerberx3.api.color_scheme import ColorScheme
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'pygerber.gerberx3.api.color_scheme'
>>> from pygerber.gerberx3.api.layers import (
...       Rasterized2DLayer,
...       Rasterized2DLayerParams,
... )
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'pygerber.gerberx3.api.layers'
>>>

pip show:

$ pip show pygerber
Name: pygerber
Version: 2.0.0rc2
Summary: Parsing, formatting and rendering toolkit for Gerber X3 file format
Home-page: 
Author: Krzysztof Wisniewski
Author-email: argmaster.world@gmail.com
License: MIT
Location: /home/user/software/diff2-venv/lib/python3.10/site-packages
Requires: click, numpy, pillow, pydantic, pyparsing, tzlocal
Required-by:

[Argmaster]

Ok, examples in README are outdated, here is updated version:

from pygerber.gerberx3.api import (
      ColorScheme,
      Rasterized2DLayer,
      Rasterized2DLayerParams,
)

# Path to Gerber source file.
source_path = "main_cu.grb"

Rasterized2DLayer(
      options=Rasterized2DLayerParams(
            source_path=source_path,
            colors=ColorScheme.COPPER_ALPHA,
      ),
).render().save("output.png")