(touch input) Dragging objects along a path.

[reedomatic]

Does anyone have any ideas how I would drag an object along a pre-defined path, say a circle. I have looked into itween and they have an example called Path-constrained Characters on their site
http://itween.pixelplacement.com/examples.php
The example uses a method called PointOnPath that returns a vector 3 position on a path at the privided percentage. I wanted to know how I would achieve this in playmaker. Any thoughts on the subject would be greatly appreciated.

thanks

[jeanfabre]

Hi,

 you won't be able to achieve dragging with iTween, that is not the intended use and path constraint works with a percentage value to position object on a path. In our case you need a system that returns the closest point on a path based a given position in space.

Super Spline can do this:
http://www.super-splines.de/documentation/class_spline.html#a7eafeecef951b9613e3baaf73582b457

and I just made a working sample of a touch dragging system. Combining superspline and this sample would be your solution really.

bye,

 Jean

[reedomatic]

Cool, thx jean. I'll check out super spline.
Marcus

[reedomatic]

Hey jean, I've downloaded the super splines addon. Have you posted that working example of the touch dragging system you mentioned anywhere? Any examples on this are greatly appreciated, I know you are really busy. Thanks for any help you can give.

marcus

[jeanfabre]

hi,

here it is:
http://hutonggames.com/playmakerforum/index.php?topic=2253.msg9972#msg9972

bye,

jean

[reedomatic]

Great, thx jean.