# [`sdf-winding`][] [Glyph][] contour [winding number][] and [SDF][] OpenGL experiment. This repository has a singular purpose: to roughly reproduce [Figure 7][] from the [Apple TrueType Reference Manual - Chapter 2: Font Engine - Distinguishing the inside from the outside of a glyph][TrueType]: ![Figure 7][] I have not read a single word of that reference manual, proceed accordingly. To build, run `make`. You need the following dependencies on your system: - OpenGL - [GLEW][] - [GLFW][] [`sdf-winding`]: https://git.rcrnstn.net/rcrnstn/sdf-winding [glyph]: https://en.wikipedia.org/wiki/Glyph [winding number]: https://en.wikipedia.org/wiki/Winding_number [SDF]: https://en.wikipedia.org/wiki/Signed_distance_function [Figure 7]: https://developer.apple.com/fonts/TrueType-Reference-Manual/RM02/FE6.gif [TrueType]: https://developer.apple.com/fonts/TrueType-Reference-Manual/RM02/Chap2.html#distinguishing [GLEW]: https://glew.sourceforge.net [GLFW]: https://www.glfw.org ## License Licensed under the [ISC License][] unless otherwise noted, see the [`LICENSE`][] file. [ISC License]: https://choosealicense.com/licenses/isc [`LICENSE`]: LICENSE