Fix the rounding issue of floating point numbers in category scale (#5880)

- Remove `Math.round` in the category scale code
- Add `helpers._alignPixel` to align grid/tick/axis border lines
- Fix grid/tick/axis border line calculation
- Add a check of the width of the axis border
- Refactor core.scale code

Akihiko Kusanagi committed 7y ago

40495ec9d0c15997bf9c309f7a97d6620f2a50de

Parent: 7c45fda

Committed by Simon Brunel <simonbrunel@users.noreply.github.com> on 12/9/2018, 10:34:34 AM