Open mikankui opened 3 years ago
https://scrapbox.io/daiiz/SVG%E3%81%8A%E7%B5%B5%E6%8F%8F%E3%81%8D
https://embed.plnkr.co/num9HKo5HI27TC8QJP8r/
SVG Freehand drawing
https://scrapbox.io/daiiz/SVG%E3%81%8A%E7%B5%B5%E6%8F%8F%E3%81%8D