Start shape infinity

[roynico]

• added a infinity.csv shape file
• corrected a typo in the doc according to a complaint of spellcheck

I noticed a possible weakness of the morph algorithm. When both start and end figures have sort of very different distributions of points in the square, then:

• the morphing needs longer to reach the final shape
• the end shape might be not really achieved

This new figure "infinity" provides a good example: data-morph --start-shape infinity --target-shape star does not achieve the desirable result after 100k iterations: And with 300k, one sort of reaches the final shape "star" but part of the figure are missing (i.e filled with very little points):

I guess the reason is because the point in the star are pretty much distributed roughly on a circle. And for the infinity, there are very few points on the top and bottom parts. This effect does not appear in the morphing "start-> panda" for example, because both shapes are roughly similar "circles".

• [ ] Test cases have been modified/added to cover any code changes.
• [ ] Docstrings have been modified/created for any code changes.
• [X] All linting and formatting checks pass (see the contributing guidelines for more information).

[stefmolin]

@roynico - Someone in the room has already been working on the infinity and figure eight shapes. If you are contributing as part of sprints, please come to the room so we can discuss what to work on and how to make sure you are running the latest version of the code, as I do not want to touch the code of conduct file and another participant has submitted a tweak to have the pre-commit checks ignore that file.

[roynico]

OK. No problem. Please close my PR. I guess there are already enough contributors to this sprint.

[roynico]

Closed. Task already attributed to somebody else.