Re: FLASH: Pan/Mask effect

[Robert Bleeker]

Is possible, just be careful of the BG image size as that will really slow

it down when you move it.


Your ideas for coding sound pretty well right. I would not loop the main

timeline but setup a separate empty MC that loops two frames and executes

the actionscript on each loop. Using the separate MC for this frees up your

main timeline.


Robert



on 14/4/00 9:45 AM, Marc Hoffman, Poison Dart Frog Media at

maildartfrogmedia [dot] com

 wrote:


> I'm trying to code this in Actionscript but probably need a working example

> to learn it. This is based on another Flasher's question earlier today, but

> is an attempt at a solution that's in a different direction.

> 

> Effect: drag a window around the stage, have a background image show

> through only where the window is.

> Problem: a dragged movie clip cannot act as a mask for a lower layer

> (otherwise this would be a piece of cake!).

> Possible solution (but one which I don't know exactly how to code):

> - Put the background image in a lower layer of a movie clip. Make it a

> movie clip itself, so it has an instance name and can be moved around using

> SetProperty of _x and _y;

> - Above that background (also in the movie clip) put a mask that lets the

> background show through.

> - Make this whole structure (movie clip) draggable by putting an invisible

> button over the mask area;

> - Make the main timeline a 2-frame loop. Use ActionScript in the first

> frame of the main timeline to constantly monitor the (dragged) position of

> the movie clip and to move the nested movie clip (the background image) in

> the reverse direction of the drag, so that as you drag the parent clip to

> the left, let's say, the nested background movie clip shifts to the right

> and, therefore, the masked part is the left part of the background.

> 

> If anyone understands this (does it sound like I'm from Mars?) and

> understands the code, could you help out?

> 

> thanks,

> 

> 

> 

> Marc Hoffman

> 

> Poison Dart Frog Media

> http://www.dartfrogmedia.com

> 



flasher is generously supported by...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Get the last 100 messages from the flasher list NOW

    http://www.chinwag.com/flasher/last100.shtml


 Flash books http://www.chinwag.com/flasher/books.shtml

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To unsubscribe or change your list settings go to

http://www.chinwag.com/flasher or email

helpchinwag [dot] com