This is a simple template for creating custom envelopes. Every now and then I need to create my own envelopes (e.g. when I am out of the bought ones), so this should save me time re-inventing the shapes and cuts.

Usage

1. Install asymptote
2. Tweak parameters at the top of envelope.asy
3. asy envelope
4. print envelope.pdf

Parameters explained

• pgw and pgh are page width and height, respectively. If force_output_size is true, these are used to output a document with exact dimensions.
• sqsz is the length of the edge of the bounding square. At this moment, we are always creating envelopes out of a square. (Setting sqsz = pgw means that the square will span whole page width.)
• envh and envw are the size of the resulting envelope. envfmt is the format, for reference and debugging.
• When with_labels is true, the output will contain debugging labels like names of various used points.

Known bugs

• Undefined behaviour when the envelope does not fit the rectangle (or fits too tightly).
• Undefined behaviour when the sizes do not follow the ordering invariants (the page must be in portrait orientation, the envelope in landscape)
• Nobody checks the validity of the config. No safeguards whatsoever.

License

CC0. This is too trivial to have any creative value. Attribution is welcome though.

Bugs, suggestions, contibutions, patches, discussion, &c.

Please mail me at envelope@pokemon.ledoian.cz.