Re: FLASH: Blending light sources...

[Scott Rouse]

I am not sure of the exact question....so I will shoot at what I think you

are trying to do.


First, Flash allows for overlapping colors to change when the top color,

graphic, has had its alpha reduced which presents the problem of having the

entire object's color change as well.  You end up never having the truest

red because its blended with whatever is the background.  You can get by

this problem by creatively placing an identical movie clip with 100% alpha

directly behind the corresponding color, but below both that color and the

color that you want to blend with.  In other words, if you want to have blue

blend with red you have four layers with the bottom two at 100% alpha and at

the color red and blue that you want, and the top two layers at 80% alpha or

whatever suits you and the same color and then tie them to their

corresponding bottom layers with code  of some sort


_root.redtop._x = _root.redbottom._x;

_root.redtop._y= _root.redbottom._y;

_root.bluetop._x = _root.bluebottom._x;

_root.bluetop._y= _root.bluebottom._y;


depending on what you want to do...you can loop in two frames or you can

stick the above code on a Movie Clip action on Frame or mouse move...The

idea being that this code will repeat and sustain the two object's

positions.


Secondly, This will produce a subtractive color mixture (red, yellow

(green), blue = mud or black) which is akin to paint which is contrary to

light which is additive (red, yellow (green), blue = white).  Technically,

it will not be like blending "light" per se.  If you need additive

mixture....take a look, maybe, at the Color object code in Flash.  It allows

you to manipulate the colors of any object directly.  I can kind of imaging

creating code that would reverse the affects of certain colors overlaps or

just certain color's existence (in a closed system where only red, yellow,

and blue are the only none blended colors).  It would be some work to figure

out it seems...but maybe only because I haven't thought about it before.  On

second thought though...I can't see how to change just parts of an object's

color.....the Color object will change the entire movie clip.


Hopefully this helped (and that you get this email....its been days since I

sent my last post and it hasn't seen the light of day)


Scott




----- Original Message -----

From: "Jefferis Peterson" <

jefferispetersonsales [dot] net

>

To: "Flash MailList" <

flasherchinwag [dot] com

>

Sent: Wednesday, December 20, 2000 8:15 PM

Subject: FLASH: Blending light sources...



> Blending light sources...

>

> I suppose there is no way to do this, but RGB colors from the monitor as

> they intersect create different colors. I was wondering if you have a

> blue object intersect with a red one in Flash, there is no way to produce

> the corresponding color in the intersection of the RGB colorwheel is

there?

>

> Jeff

>

>

> www.PetersonSales.net

> Flash, Web Design and Marketing

> ICQ 19112253

> _______

> "Happy is the person who finds wisdom, and the one who gets

> understanding, for the gain from it is better than gain from silver and

> its profit better than gold."  - Proverbs 3:13,14.

>




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