RE: FLASH: A bitmap wipe transition

[David Owen]

Fletch-


What Adam was talking about was placing the transparent vector shape on a

normal layer above the art you want to reveal. Mask layers do not support

vector transparency or bitmap alpha transparency. In order to use these

features you must use a normal layer.


Adam's suggestion is a good one if all you need is a clean gradient

transition. My suggestion of using a bitmap with alpha transparency on the

leading edge is more involved but allows you to create custom edge effects

in the alpha channel of the bitmap.


* Owen *


> ----------

> From: 	Ash Patrick-CPA016

>

Reply To: flashershocker [dot] com

> Sent: 	Thursday, August 27, 1998 2:13 PM

>

To: 'flashershocker [dot] com'

> Subject: 	RE: FLASH: A bitmap wipe transition

> 

> Thanks for your help Adam and everyone.  Adam, I think that I had tried

> what you described and when I would place that

> gradient on the masked layer, even though the one side was at an alpha

> of 0%, it still had the sharp edge on it.  Would you happen to have some

> sort of

> example that you have done where this worked that you could point me to?

> Thanks again.

> 

> 

> Fletch

> 

> 

> -----Original Message-----

>

From: Adam Norwood [adamacuity [dot] com (mailto:adamacuity [dot] com)]

> Sent: Thursday, August 27, 1998 1:02 PM

>

To: 'flashershocker [dot] com'

> Subject: Re: FLASH: A bitmap wipe transition

> 

> 

> Fletch,

> 

> Here's my suggestion, which is something that worked for me on a couple

> of my projects. Assuming that the bitmap is smaller than the whole movie

> (ie, it has empty space around it) you can spoof a mask: Make a

> rectangle (or circle, or whatever, your call) in a layer above your

> bitmap, and use the gradient tool to fill it in so that it goes from

> solid white (or whatever your background color might be) on one end to

> completely transparent (alpha = 0%) on the other end. Play around with

> the size of the rectangle, and the gradient, until your bitmap can be

> hidden under the solid white portion of the rectangle. Then you can

> animate this rectangle, making it move over the bitmap in such a way

> that it appears to be fading in. I've achieved some nice results with

> this. 

> 

> I know that probably sounded horribly confusing, so please, if you need

> me to describe it better, let me know. I think this technique is how

> Gabocorp does their opening Welcome paragraph - it looks like they

> scroll a blue rectangle down over the text, until it's all revealed.

> Could be wrong, though. Be forewarned: this dummy mask technique can

> sometimes be obvious on screens at color depths lower than 64k colors...

> 

> Let me know if this helps,

> AS Norwood

> 

> >> -----Original Message-----

>

>> From: Ash Patrick-CPA016 [SMTP:CPA016lmpsil02 [dot] comm [dot] mot [dot] com]

> >> Sent:	Wednesday, August 26, 1998 3:29 PM

>

>> To: 'flashershocker [dot] com'

> >> Subject:	FLASH: A bitmap wipe transition

> >> 

> >> I have a problem and whoever can help that would be great. I am still

> >> kinda new at Flash and I am trying to perform a graphics wipe.

> >> 

> >> I want to have a main Bitmap in the background and then have it

> >> gradually wipe away from one side to the other, but I wanted to try

> and

> >> get the edge of the wipe to be kinda like a fuzzy haze rather than a

> >> sharp line. I tried to use a mask layer w\ a gradient as the mask but

> >> the edge was still sharp. Any help would be great. And I am sorry if

> >> this was discussed before and I missed it.

> >> 

> >> Thanks in Advance, Fletch

> 

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