# Line tool makes irregular lines

**URL:** https://community.aseprite.org/t/line-tool-makes-irregular-lines/6306
**Category:** Bug Reports
**Created:** [June 30, 2020, 3:57pm UTC](https://community.aseprite.org/t/line-tool-makes-irregular-lines/6306 "2020-06-30T15:57:56Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![dacap](https://community.aseprite.org/user_avatar/community.aseprite.org/dacap/32/10_2.png) [@dacap](https://community.aseprite.org/u/dacap)
#### Post date: [June 30, 2020, 4:41pm UTC](https://community.aseprite.org/t/line-tool-makes-irregular-lines/6306/3 "2020-06-30T16:41:34Z")

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Hi there 👋 actually it was something I was playing a lot in the past, I came to the conclusion that the line algorithm used in most programs (including Aseprite now) is the best one (?) to draw continuous lines (e.g. the regular freehand stroke, or one line after the other). (Where the starting error of the Bresenham algorithm depends on the [width+height](https://github.com/aseprite/aseprite/blob/0ceff97e9f668681b085fd2b66cd7ebf438b1018/src/doc/algo.cpp#L122) of the line instead of [starting in 0](https://github.com/aseprite/aseprite/blob/0ceff97e9f668681b085fd2b66cd7ebf438b1018/src/doc/algo.cpp#L43)).

I think we need some kind of switch to use [perfect lines](https://github.com/aseprite/aseprite/issues/1641#issuecomment-444713781) or not in these cases.

A comment about the current line algorithm [in the code](https://github.com/aseprite/aseprite/commit/7c2038e7b55a7344ff003d5dea8dfb28978dcc83#diff-805c3f8fcdf8567e788b06025868ceb8R29-R35):

```auto
// Useful to create continuous lines (you can draw from one point to
// another, and continue from that point to another in the same
// angle and the line will look continous).

```

Related to:

- [Straight line with line tool or pencil tool is a bit off](https://community.aseprite.org/t/straight-line-with-line-tool-or-pencil-tool-is-a-bit-off/1045)
- [Line tool begins to angle at the wrong point of the line · Issue #1894 · aseprite/aseprite · GitHub](https://github.com/aseprite/aseprite/issues/1894)

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