Ferris Wheel

dskeans · Post by **dskeans** » Mon Jan 30, 2006 8:10 pm

I'm trying to make a ferris wheel rotate. All of the points are on same layer, and then i choose rotate points; however, when i play it back the image seems to zoom in and out. Any advice?
damion

Rasheed · Post by **Rasheed** » Mon Jan 30, 2006 8:26 pm

Use step interpolation.

dskeans · Post by **dskeans** » Mon Jan 30, 2006 8:28 pm

how do i do that?

Rasheed · Post by **Rasheed** » Mon Jan 30, 2006 8:49 pm

If you don't know that, you haven't done the tutorials. I suggest you do that first.

gavi dvan · Post by **gavi dvan** » Tue Jan 31, 2006 1:46 am

Try "Rotate Layer" instead of "Rotate Points". But yes, do the tutorials first.

myles · Post by **myles** » Tue Jan 31, 2006 1:55 am

Expanding on gavi dvan's reply:

I think you'll see more consistent results if you assign the ferris wheel to a bone and rotate the bone, or set the ferris wheel layer origin to the axis of the ferris wheel and use layer rotation.

What I suspect you are seeing:
Although the Rotate Points tool allows you to rotate the points while editing, during rendering the points move in a linear fashion from one keyframe to the next. This gives the appearance of shrinking and expanding (the zoom effect you are seeing, I suspect), because the points "cut the corners" of the rotation.

For example: The points in this hand have been rotated with the rotate points tool, but as you can see the points move linearly, leading to the shrink/expand effect.

Solution: Rotate Points is a frame 0 "modeling" tool (or drawing tool). Use bone or layer rotation for animated rotation.

Regards, Myles.

dskeans · Post by **dskeans** » Tue Jan 31, 2006 3:37 am

i found that if i rotate points every so many frames, then the zooming does't get bad enough to notice. But, I'm going try the bone method. Thanks.
D