Dynamic Alpha Fade Help

[ajspencer]

Hey everyone

How do i make a movie clip fade dynamically when i press a button.

Eg (Psuedo Code)

On press
Tell target BLAH BLAH to fade to alpha 0

I know its basic, but im haveing trouble!
Thanks Gang

[sonwah]

// ---------------------------------------
// put this function in frame one of your main timeline

_root.alphaFade = function(ob, fadeOut) {
     _root.createEmptyMovieClip("fader", 2000);
     _root.fader.onEnterFrame = function() {
          if (fadeOut) {
               ob._alpha -= 10;
               if (ob._alpha <= 0) {
                    this.removeMovieClip();
               }
          }else {
               ob._alpha += 10;
               if (ob._alpha >= 100) {
                    this.removeMovieClip();
               }
          }
     }
}

// ------------------------------------------------------

// and call it from your buttons like this:

on(press) {
     _root.alphaFade(theMovieClipYouWantToFade, true);
}
on(release) {
     _root.alphaFade(theMovieClipYouWantToFade, false);
}

could be easier ways, and with more complex maths - accelleration/decelleration etc,
but this will work.
[Edited by sonwah on 04-22-2002 at 01:07 AM]

[ajspencer]

Originally posted by sonwah

_root.alphaFade = function(ob, fadeOut) {
     _root.createEmptyMovieClip("fader", 2000);
     _root.fader.onEnterFrame = function() {
          if (fadeOut) {
               ob._alpha -= 10;
               if (ob._alpha <= 0) {
                    this.removeMovieClip();
               }
          }else {
               ob._alpha += 10;
               if (ob._alpha >= 100) {
                    this.removeMovieClip();
               }
          }
     }
}
on(press) {
     _root.alphaFade(theMovieClipYouWantToFade, true);
}
on(release) {
     _root.alphaFade(theMovieClipYouWantToFade, false);
}

could be easier ways, and with more complex maths - accelleration/decelleration etc,
but this will work.

Does all this code go in the button?

[sonwah]

nah, sorry should have commented that a bit better.
put the function in frame one of your main(_root) timeline.
only put the on(press){} and on(release){} bits on the button.

sorry

[ajspencer]

Originally posted by sonwah
nah, sorry should have commented that a bit better.
put the function in frame one of your main(_root) timeline.
only put the on(press){} and on(release){} bits on the button.

sorry

Hi Sonwah

I know im being a bit of a pain, but i cannot get it to work.

Can i send you the file and u take a look at what im doing wrong?

If not, it's all good, and thanks heaps for your help!

AJ

[sonwah]

sure fire it through if you like.
what I would do first however, is make a new movie, get it going in the most simple way possible, and apply what you learn to your project.
I got a simple example going at the same time I posted that code, just to check along the way. It is quite easy, all the code you need is in my post.

[ajspencer]

Thanks Sonwah, to tell you the truth, im not much a prgrammer, rather I am an animator. I have used flash for about 2 years now, tinkering with basic actionscripting but really got into it as a foot into the multimedia area. Im working in 3D at the moment, using Maya for commercial projects.

Do you have a preferred email address, or should i just send it to the B vitamin one? (delete)

thanks Sonwah!


[Edited by ajspencer on 04-22-2002 at 01:36 AM]

[sonwah]

yup,
but can you edit that last post and take it out again?
cheers.
I know people can get it anyway, but i don't want to make it too easy for them to spam me