Multitouch magnitude?

Hunnenkoenig

I want to change an image size by multitouch. When the user moves two fingers toward eachother, the image should shrink and if the user moves two fingers from eachother, the image should grow.

I think, I have to use magnitude touch1 X and touch2 X, but how do I watch if it grows or shrinks?

If I constrain it to an attribute, it will always watch only the actual attribute value... I think. Any advice?

synthesis

Tough one...I've never tried simulating a "pinch" effect. Will be interesting if someone out there has an answer. Seems tough to me.

Hunnenkoenig

I managed to get it work somehow, but it was rather bad, than good. Too many rules and not really what I wanted :-P

I still would like to see a solution from a pro :-)

synthesis

similar thread here:
http://gamesalad.com/forums/topic.php?id=4441

Hunnenkoenig

it's only similar :-)

He just wants to test multitouch and wants to know, if he should spend 99 dollars on GS.

I have a real task which needs a real solution. It's something specific, not just a general enquiry, which can be found dozens of times on the forum and a search would spit out them within 2 seconds :-P

Hunnenkoenig

I rather open a new topic for this...

adent42

I've done something similar. It involved finding the abs value of the halfway point between touches, moving the actor to that point, then changing the width and rotation to match the line between the touches. I hope that helps.

Hunnenkoenig

thanks, but I already solved it :-)
I also uploaded the demo for that :-)