Java Art #81 RippleEcho【Processing】

This program is made by Processing. Processing is a programming language that makes it amazing work with simple operation. 【Download】 https://www.processing.org/ 【Sample】 https://www.openprocessing.org/ 【Books】 https://www.amazon.com/s/ref=nb_sb_ss_i_2_10?url=search-alias%3Dstripbooks&field-keywords=processing&sprefix=processing%2Caps%2C543&crid=NJ2OS37IFCD7