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This is a simple template for creating custom envelopes. Every now and
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then I need to create my own envelopes (e.g. when I am out of the
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bought ones), so this should save me time re-inventing the shapes and cuts.
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# Usage
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1. Install asymptote
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1. Tweak parameters at the top of `envelope.asy`
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1. `asy envelope`
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1. print `envelope.pdf`
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## Parameters explained
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- `pgw` and `pgh` are page width and height, respectively. If
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`force_output_size` is true, these are used to output a document with
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exact dimensions.
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- `sqsz` is the length of the edge of the bounding square. At this
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moment, we are always creating envelopes out of a square. (Setting
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`sqsz = pgw` means that the square will span whole page width.)
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- `envh` and `envw` are the size of the resulting envelope. `envfmt` is
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the format, for reference and debugging.
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- When `with_labels` is true, the output will contain debugging labels
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like names of various used points.
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# Known bugs
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- Undefined behaviour when the envelope does not fit the rectangle (or
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fits too tightly).
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- Undefined behaviour when the sizes do not follow the ordering
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invariants (the page must be in portrait orientation, the envelope in
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landscape)
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- Nobody checks the validity of the config. No safeguards whatsoever.
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# License
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CC0. This is too trivial to have any creative value. Attribution is
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welcome though.
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# Bugs, suggestions, contibutions, patches, discussion, &c.
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Please mail me at
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[envelope@pokemon.ledoian.cz](mailto:envelope@pokemon.ledoian.cz).
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<!--
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SPDX-FileCopyrightText: 2023 LEdoian <envelope@pokemon.ledoian.cz>
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SPDX-License-Identifier: CC0-1.0
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-->
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