[Garoof]

X is time, Y is height. So something like, X time after hitting the jump button, the guy is Y above the ground.

(Or you can pretend that the guy is moving towards the right at constant speed, and jumping, and the points in the graphs are the different positions he'll be at :)

(Edit: I'm not very sure about the pictures to the left though. Maybe higher jumps/longer time or somethingsomething.)

[raldi]

Yeah, I don't get the difference between the left and right sides of the two graphs either.

[njharman]

I believe the only difference is in units. Left showing delta time. right showing FPS.

[Garoof]

Yeah, but shouldn't a delta of 1/3s be the same as 3fps? But the 1/3s to the left does not look like the 3fps to the right.

And it does say that the picture to the right is just like in Quake. So I was guessing that maybe the one to the left is not. Like, it has higher initial velocity and max height, and longer time spent in the air. Like the picture to the right is a jump that lasts for <1s while the one to the left is a way longer one.

Would be nice to have like axes with labels and things on them.

[Gravityloss]

Maybe one is integrated with iterated velocity and one is with both iterated?