Token is an app to generate OpenType fonts of a product typeface designed for TAMRON New SP Series, applying arbitrary weight by defining cap height and stroke width in physical length.
The official website for this project is: takram.com/projects/token
Download Latest Version (v0.1.0)
Font information, glyph shapes, metrics as well as kerning are stored as Unified Font Object in typeface/font.ufo. It uses 2000 units per em for a higher level of precision to scale kerning values, which are always rounded to integers, whereas AFDKO retains decimal coordinates in glyph outlines.
Each GLIF file may contain some conventional data in the custom data storage section in order to control Token’s path stroking and set operations. numberOfContours and numberOfHoles take an integer value that hints to Token’s stroker the number of contours or holes in a glyph after being stroked. contourStyles is a dictionary of contour identifiers and stroke styles described in the table below.
| Attribute | Type | Description | Default |
|---|---|---|---|
cap |
string | Specifies the shape to be used at the start and end of a contour. Possible values are: butt, round and project. |
round |
join |
string | Specifies the shape to be used at the corners of a contour. Possible values are: miter, round and bevel. |
round |
align |
string | Specifies if the position of a contour moves by half a stroke width to right so that the stroked path aligns to the boundary of the original path at the left (left) or right (right). |
none |
filled |
boolean | Determines if a contour is filled (true) or stroked (false). |
false |
Stroking a Bézier curve is not as easy as it looks. Since a curve parallel to a Bézier curve cannot be represented as a Bézier curve, it needs a heuristic approach that gives a practical approximation. Among several algorithms and libraries such as Fast, precise flattening of cubic Bézier path and offset curves, FreeType Glyph Stroker or QPainterPathStroker, Token uses Skia’s path stroker and set operations considering robustness and precision. Stroking a glyph takes 5 steps as follows.
- Retrieve stroked paths for each contour.
- Simplify all the paths at once to merge overlapping paths.
- Shift the stroke width by a small amount and start over until the number of contours and holes match the hints in the custom data storage.
- Give an appropriate path direction to each path (nonzero winding rule).
- Convert conic and quadratic curves to cubic curves.
Install the following dependencies via Homebrew,
- boost (developed on 1.63.0)
- libplist (developed on 1.12)
and run skia.sh inside the script folder in this repository to download and build Skia (this will take a time to complete since it's a large piece of source codes). After making sure to init and update the submodules, you should be able to open the project file in Xcode and build it.
The MIT License
Copyright (C) 2015-2017 Shota Matsuda
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- Design & Development: Shota Matsuda (Takram)
- Typeface Design: Ken Okamoto