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phetsims / collision-lab

"Collision Lab" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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label the x axis #97

Closed pixelzoom closed 4 years ago

pixelzoom commented 4 years ago

This panel shows x position:

screenshot_397

But what is the position relative to? There is no origin or scale shown on the x-axis here:

screenshot_398

Playing around with the sim (with "More Data" checked), I was able to determine that the origin is the middle tick mark, and that major tick marks are spaced at 0.5 intervals. But that's not at all obvious, and makes the x-axis almost unusable.

Recommended to label the origin and major tick marks.

pixelzoom commented 4 years ago

Ah, now I see the "0.5" scale indicator:

screenshot_392

Why is it above the panel, and not on the x axis? It's not very helpful, being so disconnected.

And the scale indicator doesn't help me with absolute position.

brandonLi8 commented 4 years ago

From design meeting 6/25/20, we decided to move the ticks to the top of the Play Area for 1D screens. Doing that now.

brandonLi8 commented 4 years ago

Done in the commit above. Closing.