Doom Fire in WPF

A version of the Doom Fire effect, inspired by the excellent article by Fabien Sanglard

Notes

• There's loads of shared state, some dicey potential threading issues, and some other oddities in here.
• Most of the interesting "Fun" parts from the article are in "StepFire" and "SpreadFire".
• This isn't a kind way to treat a WPF form, but it is fun to play around with.
• Enjoy!