par

Single-file C libraries under the MIT license. Documentation can be found at the top of each header file, but some libraries have an accompanying blog post.

library	description	link
par_streamlines.h	triangulate wide lines and curves	blog post
par_shapes.h	generate parametric surfaces and other simple shapes	blog post
par_shaders.h	string extraction and concatenation
par_sprune.h	efficient broad-phase collision detection in 2D	web demo
par_easings.h	Robert Penner's easing functions
par_bubbles.h	pack circles into hierarchical diagrams	blog post
par_msquares.h	efficient marching squares implementation	blog post
par_bluenoise.h	generate progressive 2D point sequences	blog post
par_easycurl.h	simple HTTP requests using libcurl
par_filecache.h	LRU caching on your device's filesystem

tests

To run tests, you need CMake and libcurl. On OS X, these can be installed with homebrew:

$ brew install cmake pkg-config curl

Here's how you can tell CMake to use the CMakeLists in the test folder, placing all the messy stuff in a new folder called build.

$ cmake test -Bbuild   # Create makefiles
$ cmake --build build  # Invoke the build

The tests are executed by simply running the programs:

$ build/test_msquares
$ build/test_bluenoise
$ build/test_bubbles
$ build/test_shapes

code formatting

This library's code style is strictly enforced to be vertically dense (no consecutive newlines) and horizontally narrow (80 columns or less).

The tools/format.py script invokes a two-step code formatting process:

1. Runs uncrustify with our custom configuration. This auto-formats all code in the root folder, up to a point. For example, it does not enforce the 80-character line constraint because line breaking is best done by a human.
2. Checks for violations that are not otherwise enforced with uncrustify.

The aforementioned Python script is also invoked from Travis, but using the --check option, which checks for conformance without editing the code.

Beyond what our uncrustify configuration enforces, the Python script does the following:

• Checks that no lines are more than 80 chars.
• Checks for extra newlines before an end brace.