Balloons for Balloons and Static Electricity

[arouinfar]

In phetsims/balloons-and-static-electricity#72, it was discovered that we don't have an .ai asset for the balloons in Balloons and Static Electricity.

@clmccutchan can you recreate these balloons (as closely as possible) in Illustrator? The string is drawn in code, so we'd just need the balloon itself.

The artwork for #879 is higher priority, so this can be done after the pusher/pullers are wrapped up.

[ariel-phet]

@arouinfar can you get @clmccutchan the current artwork for the balloons? (probably .png files) so we can match dimensions and such? My guess is it will be easiest if these are just "drop in" replacements

[arouinfar]

@clmccutchan here are the .png files currently being used in the sim. The images have some transparency so that the sweater is visible beneath them. Unfortunately, I don't know the precise opacity %, but please try to match as closely as possible.

balloon-green.png
balloon-yellow.png

[clmccutchan]

@arouinfar Here's a first draft of the balloons. I made them the same size as the reference pngs. I set the opacity at about 80%.

[arouinfar]

Those look spot-on @clmccutchan! Can you send me the .ai file?

[clmccutchan]

@arouinfar I just emailed you the .ai file.

[arouinfar]

Everything looks good @clmccutchan! The assets have been delivered to @jessegreenberg. Closing.