Where are the symbols?

They are generated in the ./dxf folder when the generate_dxf.py script is run. See 'img' folder for example output.

Design:

Symbols are drawn by default where 1 block = 20 units x 20 units = 1/8" x 1/8" There is no claim that these symbols adhere to any sort of official standard.

Purpose:

This program is intended to bootstrap an electrical CAD symbol library by generating common symbols in .dxf format. The symbols are all aligned to a common 2D grid and have a consistent style. Since they are generated using common building blocks a change to how a Normally Open contact is drawn will require (if kept to the same block dimensions) no changes to the rest of the library and it can easily be proliferated throughout.

External Libraries Used:

• Affine : For transformation of coordinates. \ https://pypi.python.org/pypi/affine \ https://github.com/sgillies/affine
• anytree : For keeping track of the entity list. \ https://pypi.python.org/pypi/anytree \ https://github.com/c0fec0de/anytree
• exdxf : For exporting DXF files. \ https://pypi.python.org/pypi/ezdxf \ https://github.com/mozman/ezdxf
• svgwrite : For exporting SVG files. \ https://pypi.python.org/pypi/svgwrite \ https://github.com/mozman/svgwrite