Sounds great! If anyone reading this knows java (or whatever programming language TPT is in), then I have a simple idea of how to do it:
1. Put pixels on a grid, spaced 4 pixels apart from each other.
2. Make line segments connecting adjacent dots
3. Assuming that each point is normally at (x,y), move it to (x+vx+gx, y+vy+gy), where vx/vy are velocity and gx/gy are gravity.
4. Make the lines of the grid colored the same way that velocity is colored in Velocity display.

DRAGONF0RCE:

Sounds great! If anyone reading this knows java (or whatever programming language TPT is in),.

Powder Toy is written in C
However the suggestion sounds simply like the streamline that is affected by gravity.

You can't see anything in a screen full of streamlines, and you also can't build them over walls. This would show velocity much more accurately than just a bunch of colors, or a few streamlines.

YES, i suggested something like this once but mu suggestion wasnt quite as good.....

Also i would like to see a veiwing mode designed for showing the VERY slight changes in pressure

or just have the grid display nice and accurate enough to be able to SHOW the difference between 0.00 and -0.00

i agree with bloodlust

methinks someone has been to somewhere, and is just suggesting ideas from there :D

and yes, I love that display mode!

ok, i know it is against at least 3 of the rules but as soon as i clicked that link #$%^&* happened.

@lookitsan00b thx for reminding me , i like to go "there" and check out anything they come up with every once and a while XD

lol they haven't come up with much recently (just bold and italic fonts...) :P