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In Flash MX2004, how do I turn this linear gradient box into a radial gradient circle?

Posted on 2007-11-28
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Last Modified: 2008-02-01
How do I modify this action script so that it produces a circle with a concentric radial gradient, instead of a box with a linear gradient?

Thanks,
John
import flash.geom.*
//
var mc:MovieClip = this.createEmptyMovieClip("grad", 1);
 
var colors = [0x79986B, 0xDCE0B6, 0x79986B, 0x000000];
var alphas = [100, 100, 100,100];
var ratios = [0, 15, 30,45];
var matrix = {matrixType:"box", x:100, y:100, w:200, h:200, r:(45/180)*Math.PI};
mc.beginGradientFill("linear",colors,alphas,ratios,matrix);
mc.moveTo(100,100);
mc.lineTo(100,300);
mc.lineTo(300,300);
mc.lineTo(300,100);
mc.lineTo(100,100);
mc.endFill();

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Question by:gabrielPennyback
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6 Comments
 
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Expert Comment

by:Aneesh Chopra
ID: 20367595
Just change "linear" to "radial"

you can also play with "ratios" array, to change the size of gradient circle.
for example, try replacing existing "radios" array with following:
var ratios = [0, 50, 100, 200];

here is the updated code:
import flash.geom.*;
//
var mc:MovieClip = this.createEmptyMovieClip("grad", 1);
 
var colors = [0x79986B, 0xDCE0B6, 0x79986B, 0x000000];
var alphas = [100, 100, 100, 100];
var ratios = [0, 15, 30, 45];
 
var matrix = {matrixType:"box", x:100, y:100, w:200, h:200, r:(45/180)*Math.PI};
mc.beginGradientFill("radial",colors,alphas,ratios,matrix);
mc.moveTo(100,100);
mc.lineTo(100,300);
mc.lineTo(300,300);
mc.lineTo(300,100);
mc.lineTo(100,100);
mc.endFill();

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Author Comment

by:gabrielPennyback
ID: 20368510
Hi aneesh,

Yes that was the first thing i tried, but I still get a 200x200 black box around the much smaller circle gradient.bIs "box" an ActionScript defined term?  I thought maybe "circle" would get rid of the black box, but that produces no shape at all.

John
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Accepted Solution

by:
Aneesh Chopra earned 500 total points
ID: 20371147
as I already mentioned

"
you can also play with "ratios" array, to change the size of gradient circle.
for example, try replacing existing "radios" array with following:
var ratios = [0, 50, 100, 200];
"

ratios defines the area each gradient color will occupy

ratio value must be in between 0 to 255

to get rid of black color you can set last color alpha to 0

just try follwoing code and see the output:
import flash.geom.*;
//
var mc:MovieClip = this.createEmptyMovieClip("grad", 1);
 
var colors = [0x79986B, 0xDCE0B6, 0x79986B, 0x000000];
var alphas = [100, 100, 100, 0];
var ratios = [0, 50, 150, 200];
 
var matrix = {matrixType:"box", x:100, y:100, w:200, h:200, r:(45/180)*Math.PI};
mc.beginGradientFill("radial",colors,alphas,ratios,matrix);
mc.moveTo(100,100);
mc.lineTo(100,300);
mc.lineTo(300,300);
mc.lineTo(300,100);
mc.lineTo(100,100);
mc.endFill();

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LVL 34

Expert Comment

by:Aneesh Chopra
ID: 20371179
another point,
"ratios" Array value should be set in incremental to each previous element of the array
and value should be inbetween 0 to 255

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Author Comment

by:gabrielPennyback
ID: 20374870
Thanks, aneesh. The main key was making that last alpha zero. Thanks for the continuing education.

Please take a look at this related quesion. If you have the time to post an answer now that would be awesome.

http://www.experts-exchange.com/Software/Photos_Graphics/Web_Graphics/Macromedia_Flash/Q_22990904.html
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LVL 34

Expert Comment

by:Aneesh Chopra
ID: 20375432
welcome,
I just say the linked question and it has already been answered.

secondly,
if you are satisfy with my comment on this question.
Please close this question by accepting the appropriate comment


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