Touch event in png, press only the visible not the whole picture?

Solar2D General Questions/Discussion
#1

Hi, I was working on an application in which I need to make a “simple” touch, but this time are images with some complex figures and touch event affects the entire area of the image, ie even the transparent part of a png. 

There maybe some new library to help me with this problem?,  i tried using a polygon but the images are very complex. 

any ideas?

Thank you. 

Regards
Nko.

#2

I’m not sure if you want touch events to register on the transparent part of the png or vice versa.

Maybe this will help: http://docs.coronalabs.com/daily/api/type/DisplayObject/isHitTestMasked.html

#3

I’m not sure if you want touch events to register on the transparent part of the png or vice versa.

Maybe this will help: http://docs.coronalabs.com/daily/api/type/DisplayObject/isHitTestMasked.html