How to programmatically recalculate the signature json data?

[wesslim]

I encounter a scenario where the user draws a signature on a mobile device/touch screen device(any device other than PC) in portrait mode, and the signature is drawn at the bottom on the portrait screen.

So when viewing the signature on landscape screen such as PC(i have save the signature JSON data in database, and display it on other PC), it fails to show the signature. The signature is there but the position is out of scope when viewing in landscape screen.

I wonder is there a formula to recalculate the signature JSON data such as recalculate the data to 0,0 position when user draw on 50,50 position

[djmj]

Have a look at my fork that will solve exactly your requirements. If i have some time left i may merge his latest version 1.2 with my fork.

https://github.com/djmj/signature