Here we will learn how to create a drawing canvas where you can draw anything with different colors, different stoke width with couple of additional functionality like clear the canvas, undo the last operation, change the back-ground theme etc.
It supports both iPhone and iPad with all orientation (portrait, landscape, upside down).
As iPad and iPhone upper versions like iPhone X, XR,XS, 8 Plus have enough space to draw. It's more convenient to draw.
- use bezier path for drawing.