clofresh / huller

Finds the convex hull of a transparent png and outputs it as a lua table

huller

Simple cli util to find the convex hull of a transparent png and output it as a lua table of x/y coordinates. Useful for making collision shapes for for sprites.

Adapted from the opencv convex hull example: http://docs.opencv.org/3.0-beta/doc/tutorials/imgproc/shapedescriptors/hull/hull.html

Dependencies

• OpenCV >= 3.1
• make

Compiling

make

Using

./huller path/to/sprite.png > sprite.lua

sprite.lua will contain a lua module you can require and to have a table of x/y coordinates of a convex hull shape for the sprite image.

This is useful for working with a collision library like HC