Draw a path with variable width in iOS

Question

I am working on a writing application, My writing is working fine, but what I want to implement is variable stroke width, so that the writing is very realistic

Answer 1

In your touchesBegan: method, UItouch is supplied.
UITouch has below instance functions,

– locationInView:
– previousLocationInView:

And below property

@property(nonatomic, readonly) NSTimeInterval timestamp

From the above, i think you can easily calculate velocity.I didn't go through any of mentioned links.I just want to give you an idea of how to calculate velocty based on touch object.