Beta, 'Move by Bézier' Extension

[Ross]

New BETA extension: 'Move by Bézier'
This object can move objects around on screen in a Bezier curve.

Please test this and report any bugs or confusion.

BETA Move by Bezier Download v0.003

[MechatheSlag]

Haha oh WOW. I've been trying for AGES to figure out how to do that in runtime!

edit: an example would be nice.

[Ross]

Good idea,
Here's an example.

[MechatheSlag]

That's amazing. Is there any way to make the object move at a constant speed? I noticed it sometimes goes slower / faster.

[strat59]

Brilliant Greyhill great extension thanks.
strat59

[Ross]

There might be... i think i've got an idea.....
But, it doesn't actually get slower or faster, it just calculates the next step, and it might be closer to the previous step, than the previous step, if that makes sense.
The 'slowing down' especially happens when you have control points that oppose eachother compared to the general direction the curve goes.
But, if you count up the distance between all the control points, and compare that to a linear curve (straight line) of the same distance, the movements will finish at the same time (if set at the same speed of course).

[MechatheSlag]

Yeah I figured it was because the steps were closer to eachother, and the steps are calculated in %, but it'd still be cool to move at the same speed, because if you could implend that, then this extension will be extremely useful to me.

[Brovic]

Cool extension !
And yes constant speed would be a must but it seems to be rather hard to solve. You should find a lot of documentation on it as it is a rather classical problem.
I know absolutly nothing about maths but I found for example that pdf link about Arc Length Parameterization of Spline Curves

Just looking at those equations makes me sick :sick:

[Ross]

Yes, steer clear of those equations.. i'll see if the idea i've got works first.

[Bruto]

Amazing extension, Greyhill... thanks!