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kphillisjr / pngencode.cpp
Created June 17, 2025 19:04 — forked from mmalex/pngencode.cpp
bug fix png encoder
// by alex evans, 2011. released into the public domain.
// based on a first ever reading of the png spec, it occurs to me that a minimal png encoder should be quite simple.
// this is a first stab - may be buggy! the only external dependency is zlib and some basic typedefs (u32, u8)
//
// VERSION 0.02! now using zlib's crc rather than my own, and avoiding a memcpy and memory scribbler in the old one
// by passing the zero byte at the start of the scanline to zlib first, then the original scanline in place. WIN!
//
// more context at http://altdevblogaday.org/2011/04/06/a-smaller-jpg-encoder/.
//
// follow me on twitter @mmalex http://twitter.com/mmalex
@kphillisjr
kphillisjr / OpenSimplexNoise.java
Created July 28, 2017 20:31 — forked from KdotJPG/OpenSimplex2S.java
Visually axis-decorrelated coherent noise algorithm based on the Simplectic honeycomb.
/*
* OpenSimplex Noise in Java.
* by Kurt Spencer
*
* v1.1 (October 5, 2014)
* - Added 2D and 4D implementations.
* - Proper gradient sets for all dimensions, from a
* dimensionally-generalizable scheme with an actual
* rhyme and reason behind it.
* - Removed default permutation array in favor of