ActionScript 3.0 :: How To Gradients In Bitmaps Affect CPU
Jan 20, 2012
I'm confused by a tip in Adobe's own documentation that says:Avoid using gradients, because they require many colors and calculations to be processed, which is more difficult for a computer processor to render.I understand how this would be true in a vector shape fill, but they aren't specifying vector. It seems to be implied they include bitmaps too, since the next couple tips are bitmap related.If they do in fact include bitmaps in this tip, can someone explain to me how this is possibly true? In a bitmap a pixel is a pixel. I don't see how it matter that the pixels form a gradiated color or not, the software still has to read and write each pixel regardless.
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Jul 31, 2009
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Jan 26, 2009
Hi --
I am trying to programatically create a gradient fill. I have
tried
following the examples in the Flash CS3 help but they don't
seem to work
right.
The help file states:
ratios:Array - An array of color distribution ratios; valid
values are 0 to
255. This value defines the percentage of the width where the
color is
sampled at 100%. The value 0 represents the left-hand
position in the
gradient box, and 255 represents the right-hand position in
the gradient
box.
So I interpret this to mean that if I have a box that is 200
pixels wide
that 0 would be at 0 in the box, 128 would be at 100 and 255
would be at
200. However, it appears that 255 is always the middle of the
box and 128 is
1/4 of the box.
What I want to do is create a three color gradient of red,
blue and green
where blue is in the middle, red is on the left and green on
the right and
the colors transition.
Can someone please help me here?
Thanks
Rich
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Nov 21, 2009
how to change below code to as2.
var _loc_1:MovieClip;
//var _loc_2:Graphics;
var _loc_2:MovieClip;
var _loc_3:MovieClip;
var _loc_4:Matrix;
[code]...
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package {
import flash.display.GradientType;
import flash.display.Shape;
import flash.display.Sprite;
import flash.geom.Matrix;
[Code] .....
If I change
matrix.createGradientBox(800, 100, Math.PI*0.5, 0, 0);
to
matrix.createGradientBox(800, 100, Math.PI, 0, 0);
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[Code]...
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Code:
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[code]...
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[Code]....
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[Code].....
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[Code]....
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