ActionScript 3 :: Improve Performance Using Blitting For Graphics?
Sep 9, 2010
I am a bit new to using blitting for graphics. But I have worked up a few demos myself, and I have been reading a lot of information on the methods used. One common theme I have been seeing though is that all of them brute force rendering; drawing the farthest back object first and stepping through all other objects. even drawing objects that are going to be completely overlapped. The reason all of them say this is that any kind of testing to see what should be drawn actually takes more time than just drawing everything with no checks. Is there any kind of way to detect what should be drawn, that will run faster than just drawing everything?
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Mar 18, 2011
In flash, if you have a complicated graphic (like a complex diagram) that doesn't change much and you want to move/zoom/rotate it around, then does Flash perform better if you convert all graphics into symbols? Or does making symbols slow things down?
Background: Sometimes, you do things for so long, you can't remember why you started in the first place. Whenever I import graphics in flash (like from Illustrator, for example), I select everything, press cmd-B (or ctrl-B on Windows) repeatedly, "breaking apart" everything until I can't, anymore. Then I press F8 and create a symbol.
That's just what I've done for like the last 10 years. It's to the point where I don't even think about it, anymore. I vaguely remember doing this after learning that performance improves when you break apart graphics to create a symbol.
Now, I have a problem: I'm translating/rotating/scaling a massively complex, static diagram and it's too sloooow. I'm trying every technique I can think of to speed things up—every little bit counts.I've read this link and lots of others but I haven't come across the topic of creating symbols.
Summary:should I go back through and make everything a symbol? Should I go through and make everything NOT a symbol? Which is faster?
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Mar 19, 2012
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Jan 19, 2010
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Mar 25, 2011
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Jan 31, 2011
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Aug 17, 2011
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for( ... )
{
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Feb 17, 2012
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Oct 22, 2010
Am currently working on a tool created by a colleague of mine and would like to improve performance. Basically, it's a tool for drawing on screen and uses a combination of Sprites and the Graphics class to draw a line segment every time the mouse is moved when the mouse button is down. Here is the drawing bit:
// on MouseMove
protected function drawLine(e:MouseEvent):void {
if (currentTool.thickness > 0){
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var line:Sprite = new Sprite();
line.graphics.lineStyle(currentTool.thickness, currentColour);
[Code] .....
As you can see, it checks if the line 'thickness' property and draws if it is and erases if it isn't. I did think of using a technique similar to blotting here where it'd draw to a bitmap but I'm not sure this'd give the performance boost I want or if, indeed, there would be any way to have an eraser function. The drawing itself works nicely - this isn't the problem, it's the performance of the subsequent 'drawn' sprites.
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Apr 26, 2011
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Aug 6, 2009
I've been building a project that is essentially a mashup style editor. You pick from a series of clips, arrange them in order, and then can play them back. Originally it was a series of FLVs that would play one right after another, one stops, next one starts, but this wasn't seamless. So I switched to embedded FLVs inside of SWF files.
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Mar 20, 2011
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Jan 25, 2011
There is so many ways to improve the actionscript performance and reduce code size. Let share what tricks you can come up with.
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Dec 28, 2009
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Code:
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[code]....
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Jun 21, 2011
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video_camera.attachCamera(camera_atual);
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Jan 18, 2012
I've been doing a little bit of reading about Stage3D, which will be a new API used with Flash Player 11.Will this API improve the performance of 2D rendering (Vector) in any way, or will the library be used primarily for rendering 3D?
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Jul 31, 2009
For poor performance reasons, the DataGrid will cache checkboxes and reuse them for different rows. If you have 50 rows, it won't create 50 checkboxes. It will create as many checkboxes at are visible, plus a few more for padding, and then reuse them as you scroll. This is why you need to explicitly manage their state. How can improve it ? How can fixed checkbox value ? i used checkbox like below But checkbox doesnot remembering the values
[Code]...
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Oct 23, 2011
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Feb 20, 2012
I am trying to get bitmapdata from a loader to be able to use my tile sheet for blitting. I seem to be unable to get it to work. After some testing I noticed that none of the code after this piece is executed in the SWF, so apparently it always freezes at this point:
ActionScript Code:
tileSheet = (evt.target.content as Bitmap).bitmapData;
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Nov 7, 2010
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Sep 12, 2011
this is what i'm trying to accomplish; With a click on a movieclip (cannon_mc)a shot is being fired (ball_mc)
The longer mouse is down, the speed of wich the ball is fired with should increase.My question to you is;
What is the most efficient way to accomplish this? With a timer or something like this;
[Code]...
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Feb 18, 2011
I know there are different situations where one would be better than the other, but I'm comortable with a generalized statistic of... How much faster is blitting than using vector Sprite objects in Flash?
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Jan 11, 2011
I'm devloping some library classes for flocking/steering behaviours on large numbers of objects (2000+). I'm finding that at < 500 instances, performance is reasonable. As the numbers increase, framerate bogs down.
I've seen remarkable performance with libraries such as Flint or Box2D with ridiculous #'s of particles / objects, so it should be possible to optimize / refactor my code to be a bit better.
I'm aware of the basic optimizations, such as bitwise operations and optimized for loops. Are there any more fundamental approaches I should be considering? For example, currently each instance is a vector-based MovieClip. Would working with BitmapData be more efficient?
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Nov 4, 2011
Will I take a big hit in performance using nested ViewStacks? Should I strive to handle all navigation in one ViewStack and push children manually or will the affected performance be negligible?
eg.
<viewstack>
<tabnavigator />
<tabnavigator />
<tabnavigator />
</viewstack>
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Apr 9, 2005
I was wondering about MC and hey can help to lag a game out. I set up an advanced class system so i don't have to use MC to simulate walls, all i use isthe x,y,width and height. Well anyway since i don't need MC anymore I was wondering if there is a way to attach Graphics instead of MC cause a Graphics file size is relatively small than that of a graphic, I think. If anyone could tell me thats true and show me a way to attach graphics that would be nice. I haven't tried it yet but maybe if I exported the graphic from the library imihgt be able to call its name, but it doesn't have an instance name so im stuck.
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Oct 8, 2009
i am trying to receive in my function as a parameter either a shape or a sprite and then access their graphics property, but this gives me an error:
Code:
public static function makeRect( obj:DisplayObject, ...
var g:Graphics;
if(obj is Sprite){
[code]...
//1119: Access of possibly undefined property graphics through a reference with static type flash.display:Graphics.
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Jul 14, 2010
There is no maintainAspectRation property for video object.Then how to improve the quality of video when even we resize the video dynamically.It has to maintain good quality.How to achieve this.
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Jan 31, 2009
I'm playing around with Flash CS4 trial and tried to 'compose' a 3d Box by putting 6 MovieClips as the side elements of the box in one clip which represents the whole box. (only using the Flash Tools, no Actionscript). Within the BoxClip (after doubleclick on the BoxClip on stage), all sides look right, each side is positioned with the correct angles and coordinates. Outside the BoxClip, back on root stage, the box sides are not parallel anymore, the angles are not 90 degrees, there is no 'box' actually. So I guess, one of the problems is the 3D Center point of the objects which is absolute to one point in coordinate space. The other problem is the faulty '3D' display in Flash, that is, changing from inside to ouside a clip changes the view also. So far, the Flash GUI seems quite useless for doing some '3D'. How to improve the workflow?
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May 28, 2010
The quality of sound when playing my flash file on the timeline in flash CS4 is excellent, however when I go to test movie the sounds quality becomes awful, like its being played in a tunnel on terrible speakers, my sound files are .wav files, am I missing a process I must do to ensure the quality of sound is carried through to the final published animation?
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Feb 24, 2010
I am using Helvetica Neue 43 Light and it looks great as Dynamic Text without embedding the fonts. It is nice and bright, sharp edging, etc.
I notice though, that on other computers, the Helvetica Neue font is displayed as Times. I am presuming because these other computers do not have Helvetica Neue installed on their computer system.
If I embed the fonts, it looks the same as static text or text that I have broken apart. The fonts are thicker and has blurry edges.
Is there any way of getting around this and have my Helvetica Neue looking sharp and crispy like dynamic text without embedding the fonts.
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