Refactored the rotation transformation function and examples

[nangahamandine]

• I've updated the initial rotation transformation function to now normalize to a co-ordinate system with with the default center of (0, 0).
• I also refactored the rotation transform function to use a conversion from Cartesian coordinates to polar coordinates, then rotate, then convert back to Cartesian coordinates. This therefore makes it simpler to understand.
• I added a new example to test the ellipse rotation transformation and it works fine.
• All rotation transformations are now displayed within the canvas
• Finally, I added comments to make the implementations easier to understand.

These changes are based on the requirements of issue #60

[nikochiko]

Nice work! @nangahamandine

I've added some comments.

Thanks for the additional comments throughout the code. Can you add them in another PR please and remove them from here? It's a cleaner commit history that way, and it also makes it easier to do better reviews.

[nangahamandine]

The screenshots based on the present changes can be seen below:

[nangahamandine]

Nice work! @nangahamandine

I've added some comments.

Thanks for the additional comments throughout the code. Can you add them in another PR please and remove them from here? It's a cleaner commit history that way, and it also makes it easier to do better reviews.

Thank you. I'll take out the comments and update the code.

[nangahamandine]

Nice work! @nangahamandine

I've added some comments.

Thanks for the additional comments throughout the code. Can you add them in another PR please and remove them from here? It's a cleaner commit history that way, and it also makes it easier to do better reviews.

Thank you. I'll take out the comments and update the code.

[nangahamandine]

I've updated the code based on all the requested changes made by @nikochiko

I encountered some issues with refactoring into a rotate_point function and when using pattern matching, hence the delay.
I succeeded to resolve all issues and everything works fine now.

Please review :)

[nangahamandine]

These are the attached screenshots of the rotated shapes:

[nikochiko]

I encountered some issues with refactoring into a rotate_point function and when using pattern matching, hence the delay.
I succeeded to resolve all issues and everything works fine now.

Awesome! I'm glad you were able to do it.

I added comments where I thought the changes weren't necessary.

At this point because our representation of rectangle / ellipse is not good enough, we aren't able to demonstrate rotation in examples properly. Once that is done we should be able to create more interesting examples!

[nangahamandine]

I encountered some issues with refactoring into a rotate_point function and when using pattern matching, hence the delay.
I succeeded to resolve all issues and everything works fine now.

Awesome! I'm glad you were able to do it.

Thank you @nikochiko

I added comments where I thought the changes weren't necessary.

I'm not sure where, can you please reiterate so I could make the necessary changes.

At this point because our representation of rectangle / ellipse is not good enough, we aren't able to demonstrate rotation in examples properly. Once that is done we should be able to create more interesting examples!