How do I make the grond scroll vertically ?

[saintbe]

Hi,

I am playing around with a front facing walk cycle. I am trying to get a convincing ground layer but I can't quite get the effect I am looking for.
I found some documents on how to create a panning background layer sideways but this is slightly different because the floor is not panning over the entire screen.

I have a ground layer that basically is the bottom side of the screen ... the edge of the floor object halfway the screen is the horizon. What I am looking for is kind of a rolling effect which enters the camera view at the bottom of the screen and then scrolls up and then stops at the horizon (I hope that made sense).

The effect I am looking for can be seen here in this little Simpsons clip (seconds 4-5 in the clip) :


Please advise,
-Kim.

[slowtiger]

You need to animate that ground in perspective. First you need to construct your central perspective, like this:

Then you choose your method of animation. Easiest is to animate the gaps between the tiles as a set of dark lines on a static triangle.

You could as well use AS' 3D abilities to create some piece of ground, multiply it, and put it into perspective.

[slowtiger]

Just had to try it myself. Here's the result:
http://www.slowtiger.de/examples/perspective_ground.mov (switch on looping)

And here's the file:
http://www.slowtiger.de/examples/perspe ... d.anme.zip

Once the point animation is done it's easy to scale the whole layer, or shift the keys in time to make that "scroll" appear slower or faster. I did a blurry overlay for the far end, you could as well animate line colour, or line width.

[saintbe]

Thanks slowtiger !

I still need to make some improvements on the perspective but I think I got the grasp of the technique now ...
This is what I came up with for now ... please ignore the basic floor texture or background picture



Tell me what you think please.

-Kim.

[jahnocli]

When human beings walk towards you, you see the top of each foot at the beginning of a walk cycle, and the sole of the foot at the end (alternatively for each foot, of course). Her feet just look as if they are moving up and down on the spot, which looks a little odd.