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# Masque README
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Masque is a Python module for designing lithography masks.
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The general idea is to implement something resembling the GDSII file-format, but
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with some vectorized element types (eg. circles, not just polygons), better support for
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E-beam doses, and the ability to output to multiple formats.
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- [Source repository](https://mpxd.net/code/jan/masque)
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- [PyPI](https://pypi.org/project/masque)
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## Installation
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Requirements:
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* python >= 3.7 (written and tested with 3.8)
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* numpy
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* klamath (used for `gdsii` i/o and library management)
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* matplotlib (optional, used for `visualization` functions and `text`)
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* ezdxf (optional, used for `dxf` i/o)
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* fatamorgana (optional, used for `oasis` i/o)
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* svgwrite (optional, used for `svg` output)
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* freetype (optional, used for `text`)
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Install with pip:
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```bash
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pip3 install 'masque[visualization,oasis,dxf,svg,text]'
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```
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Alternatively, install from git
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```bash
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pip3 install git+https://mpxd.net/code/jan/masque.git@release
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```
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## Translation
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- `Pattern`: OASIS or GDS "Cell", DXF "Block"
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- `SubPattern`: GDS "AREF/SREF", OASIS "Placement"
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- `Shape`: OASIS or GDS "Geometry element", DXF "LWPolyline" or "Polyline"
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- `repetition`: OASIS "repetition". GDS "AREF" is a `SubPattern` combined with a `Grid` repetition.
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- `Label`: OASIS, GDS, DXF "Text".
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- `annotation`: OASIS or GDS "property"
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## TODO
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* Better interface for polygon operations (e.g. with `pyclipper`)
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- de-embedding
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- boolean ops
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* Construct polygons from bitmap using `skimage.find_contours`
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* Deal with shape repetitions for dxf, svg
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