Comparative density descriptions for Mass

[terracoda]

@mbarlow12, I have a draft for describing density when the constant size checkbox is check and a user puts their focus on a mass slider.

We will likely have to do some manual tweaking, but if you could evenly split the 7 categories for now for the range in the model, we'll see how it works.

Here's the current scale:

• much less dense than
• a lot less dense than
• a little less dense than
• as dense as
• a little more dense than
• a lot more dense than
• much more dense than

Here's the link to the examples in the design doc

[terracoda]

@mbarlow12, if you have any questions, please assign back to me.

[terracoda]

@mbarlow12, I removed the word "alert" in the title as I am not sure where this information will be going from a technical perspective. The main thing is it is text that will read out on focus of the mass slider when the Constant Size checkbox is checked.

[terracoda]

@zepumph, I am assigning this issue back to me because I need to iterate on these density descriptions.

[terracoda]

I have new comparative scales and ranges for both comparative size and comparative density. Here the table that was created for BASICS from phetsims/gravity-force-lab-basics#96 (comment). Note the number actual ratios are from BASICS. The number of ratios for each range will be much larger in this sim.

We may need to tweak the ranges for REGULAR, but hopefully we will be using the same 9-point scale.

[terracoda]

@zepumph, in principle I think we can implement this scale for both sims for now and see how it works in both. Whether we need to adjust the ranges for both sims or just REGULAR is not clear to me yet (edited for clarity).

Assigning to you, but of course, getting the scales into BASICS is the priority.

[terracoda]

@zepumph, I think this new scale is implemented.
I am removing "focus" from the title, as these descriptions are no longer provided on focus.
And then I close this issue.
Please re-open if this is pre-mature.