Feat: Indicator

[chrispader]

Allow the user to show an indicator at the end of the graph. This indicator gets hidden once the hold/pan gesture gets started.

[chrispader]

@mrousavy Ready for review! This PR is based on #17 and #18.

[gtokman]

@chrispader do you have a video example of what the indicator looks like? Wondering what the use case would be!

[chrispader]

This is how it looks in the app i originally had the need for this feature.

This includes the basic indicator and also a "live" pulse animation.

Upload.from.GitHub.for.iOS.MOV

[chrispader]

Not completely finished yet though 😬

[gtokman]

@chrispader the live pulse looks super nice!

[gtokman]

Have you tried integrating a gradient?

Saw some discussion here #11 (comment).

[chrispader]

Not yet! Implemented a lot of features for use cases in one of our own projects at Margelo. I'll talk to @mrousavy on this. If i find some time, i may be implementing this for general use.

[Leoputera2407]

Hey Chris Pader, I was playing around with the Spline interpolation method you integration in this PR. I think it might not be implemented correctly, as there were a few of my datapoints with higher Y positions, got rendered lower

[chrispader]

Hey Chris Pader, I was playing around with the Spline interpolation method you integration in this PR. I think it might not be implemented correctly, as there were a few of my datapoints with higher Y positions, got rendered lower

Hi! Thanks for your input.

I already made some changes in a project for one of our clients, that address these issues..

I'll update this PR soon, so everhing works.

Sorry for the delay, kinda busy right now 😅😬

[Leoputera2407]

No worries, thanks for working on this! I have been trying to fix the interpolation issue as well. The current bezier curves only results in such blocky graphs when data is sparse.

[Leoputera2407]

@chrispader, are there any updates on this?

[chrispader]

Not supposed to be closed, just an issue with squashing the commits. To be continued

[mrousavy]

Looks good and runs very smoothly - nice work!

Left just a few code org comments to make it cleaner and easy to read, then we're good to go!

[mrousavy]

LGTM! 🚀 nice work chris!