* change resize math to absolute instead of delta
* typings
* small change for width on rotation
* apply absolute resize to other sides
* revert&change math.ts
* polish, polish, polish
* refactor with offset
* eliminate nextX
* rename to offsetPointer
* fix curved lines
* prefer arrow function
* remove unused variables/comments for now
Co-authored-by: daishi <daishi@axlight.com>
