Should dropper have a fixed position?

[pixelzoom]

Related to phetsims/qa#889.

This sim has all of the same problem with the movable dropper that we encountered in phetsims/ph-scale#270. Should we make the dropper also have a fixed position in this sim? Or is this sim somehow different because the shaker is (necessarily) movable?

My preference would be to also make the dropper have a fixed position here. Otherwise we'll be circling back to this when the sim gets alt input support.

[arouinfar]

My preference would be to also make the dropper have a fixed position here. Otherwise we'll be circling back to this when the sim gets alt input support.

Yes, let's fix the position of the dropper @pixelzoom.

In case someone in the future questions this decision, the many reasons why the movable dropper was problematic in ph-scale are documented here: phetsims/ph-scale#270 (comment)

[pixelzoom]

Next questions is where should the fixed position of the dropper be? The default when you start the sim is the first screenshot below. I have a slight aesthetic preference for centering it between the faucet and right edge of the beaker, second screenshot below -- @arouinfar is that OK with you?

[arouinfar]

Centered looks good to me @pixelzoom.

[pixelzoom]

Done in the above commit. @arouinfar please have a look in master, close if OK.

I'm glad we're doing this for the first version of the sims to have API files, so we don't need a migration rule.

[arouinfar]

Looks good, thanks!

[pixelzoom]

Reopening to confirm in phetsims/qa#894. It looks like changes I made during dev testing did not get into the 1.7 release branch.

@samreid @matthew-blackman FYI.

[pixelzoom]

Still OK in 1.7 branch. Closing.