Updates to default ball data

arouinfar commented 4 years ago

For https://github.com/phetsims/QA/issues/529

I'd like to suggest a few tweaks to the default ball data.

[x] Intro Screen: Set initial position of Ball 2 to 1.00 m.
[x] Explore 1D Screen: Set initial position of Ball 1 to -1.70 m
[x] Explore 2D Screen: Swap the x and y components of Ball 3's initial velocity

The first two tweaks to ball positions will get rid of the overlapping velocity vectors, which I think looks nicer for an initial setup. The adjustment to Ball 3's initial velocity will make the first few collisions a bit more exciting. Currently, the balls tend to end up bouncing between the top and bottom walls.

Before	After

brandonLi8 commented 4 years ago

Done in the commit above. Closing.

arouinfar commented 4 years ago

It looks like the Intro screen defaults were reverted at some point. @jonathanolson can you update Ball's 2 initial position on the Intro screen to (1, 0)?

jonathanolson commented 4 years ago

Should be done, can you verify? (I also figured we'd want to keep the home-screen icon the same, let me know if you want it updated, it was linked in the code).

arouinfar commented 4 years ago

Looks good in master, @jonathanolson. Let's leave the Intro Screen icon as-is.

phetsims / collision-lab

Updates to default ball data #141