ActionScript 2.0 :: What Is An Alpha Threshold
Mar 31, 2007What is an alpha threshold?
View 11 RepliesWhat is an alpha threshold?
View 11 RepliesI'm building a flash app that pulls images from flickr and removes the white background. I'm doing this using threshold and I get a really ragged outcome. Is there any way to get a better and smoother color key?
photoNumber = Math.floor(Math.random() * (photos.length));
loader.load(new URLRequest(photos[photoNumber].path));
loader.contentLoaderInfo.addEventListener(Event.COMPLETE,draw);
trace ( "trying to load photo " + photoNumber );
function draw(e:Event) {
[Code] .....
I'm trying to use threshold to change the colours in a bitmap image according to a lookup table. I've tried the following line of code to convert each colour to another, but without any luck:[code]
View 0 Repliesis there a type of variable that understands that 360 is less than 0
[Code]...
this works as long as i dont cross the 360/0 threshold (it may be -180/180 since i removed the +180)
I am stuck with a requirement to display a horizontal line on a ColumnChart to indicate a threshold level. I have the data to the Chart as an ArrayCollection.
Is it possible to get the location of a value that is shown on the y axis? I think I will be able to place a line or 1px high canvas on top of the Chart to achieve this. Or better, is there any built in functionality that i may have overlooked or is there some open library that can achieve something like this?
I'm trying to use threshold to change the colours in a bitmap image according to a lookup table. I've tried the following line of code to convert each colour to another, but without any luck:
Code:
bmd.threshold(bmd, bmd.rect, new Point(), "==", originalColour, newColour);
I have not had much luck so far, I've only managed to generate a black and white image, or nothing at all.
I have this tutorial code from AS3 Cookbook, fog like effect on Bitmap data
Code:
import flash.display.Sprite;
import flash.display.Bitmap;
[code]....
[URL] i want the object to fade out but in the object there's a lot of overlapping pictures and each becomes half transparent. how to make the movieclip to change the alpha as it was without objects?
[Code]....
just spotted this curious trick. If you want to flip something to go invisible on a click, and then reappear on another click (etc etc), try this:
create the sprite, setting alpha to either to 1 OR -1
mySprite.alpha=1; //OR
mySprite.aplha=-1;
[code]....
using AS, on loading a movie a solid shape is there with alpha at 100% then over a period of 5 secs its alpha is reduced to 0.
i'm new to this......please help if you want to if you don't have a good weekend but think of me struggling onwards and upwards...
I want to do aplpha = .5 for the whole app, but then have a MC display at full alpha, is there any way to do this?
View 6 RepliesAs far as I know theres in no way to cahnge the alpha of a dynamic text box. I put one in a movie clip and when i try to change the alpha of it everything else in it changes its alpha but the not the DT box. Could someone plz verify for me that u can't change alpha and help me find a component that allows alpha control with a dynamic text box. thx in advance.
View 5 RepliesI've bought a component on flashden. This is a text component that makes it possible to load CSS & Html on your flash project. Check the included zip for the source. What I want is that the background of the component is transparant. Now it has a linear gradient. I've tried to set the drawing in the component to zero alpha but that didn't do the trick. How to edit the background (if nescessary by actionscript)?
View 2 RepliesI'm trying to get an instance of an FLV Playback that serves as a background to one of the sections of my Flash site to fade in once the section is entered, and fade back out again when it is exited. I've put it into an mc called 'vid container' and I applied some simple motion tweening to the container, to fade it in from 0 opacity to 100 and back down again. What I'm having trouble understanding is that, while the fadeout works absolutely fine, the fade in doesn't work at all.
View 2 RepliesI have a page with buttons and i want the buttons to grow on click, get bright on mouse over, get brighter on click, go back to original on mouse out (Unless clicked). Then I want the current selected button to shrink and return to normal alpha upon clicking another button. This is the code i have, and it works pretty well:
Actionscript Code:
import fl.transitions.Tween;import fl.transitions.easing.*;homeClip.addEventListener(MouseEvent.MOUSE_OVER,
[code]....
I am using flash to create an animation where text, once converted into a movieclip or a button, fades at a certain point. To do this I am using the text tool and converting the text into a movieclip.
I am trying to make the text fade away by using the alpha property, but the preview will never adjust the movieclips alpha value. I've tried embedding the font and linking it but it still just doesn't work.
i draw a rectangle, convert it to symbol1 and export for actionscript. after that i edit the rectangle class and inside the constructor i want to change the alpha value by writing this._alpha=44; a error msg popout : 1119: Access of possibly undefined property _alpha through a reference with static type Symbol1.
View 2 RepliesI have a game I'm adding a print button to, for users to print their score at the end of the game. The problem is, is that the printing make some of the buttons look weird, for some reason (color is missing, a white box around the button, that should be empty/transparent). This is the script I'm using to print:
Code:
printButton.onPress = function() {
print(drawingArea, "bframe")
}
I've tried a number of ways of making it so the buttons are seen normally, even tracing them as bitmap, but it makes everything lock up when I try to print that way and nothing else seems to work. So I want to temporarily make the buttons invisible, while it's printing, and then go back to vissible once it's done.It's easy enough setting the button alpha to 0, with
Code:
printButton.onPress = function() {
buttonInstanceName._alpha=0;
and then the script to print; it makes it invisible just before it prints, but what I need is way to reset the alpha to 100 once it's done printing.
I've created a txtField with background set to true, backgroundColor set to a certain color, and txtField.alpha set to 10; however, the alpha does not work. The background color of txtField appears to have a full opaque color and not transparency.
View 4 RepliesI'm trying to create a tab system on my website. I have a small 25 pixel tall swf file at the top of the page that acts as the tabs. It uses PHP to communicate with the rest of the site. I have a larger swf below that acts as a directory to my files. When the user finds a file, he or she can open it in a new tab by clicking a certain button. And then switch between tabs using the top swf. I've got all of this down using AS3, but I'm not as good at the basic web design elements. How do I communicate to have every lower layer except for the one that the viewer wants to look at go to 0% alpha? Also, I cannot just have the tab system be all in one swf because some of the files that I want the user to open will be in AS2, which won't run inside an AS3 host.
View 3 RepliesI am trying to get target movie clip's alpha value, which is animated.
When the alpha value is reached to certain value, I want to trigger certain event.
Is any way to get current frame's target alpha value by using set interval or event lister?
I have a line that starts invisible then becomes solid then invisible again. First keyframe is alpha 1%, should the two keyframes that follow next in the timeline where it shows as full strength colour be left alone, showing still as colour>none in properties, or should I choose alpha and 100% ? Last keyframe again sees it given alpha 1%. ( I was told dont use 0% as it causes flash more work !)What is best practice here? I have many of these to do so leaving keyframes as 'none' for colour would make life much quicker.
View 3 RepliesI have this code:
[code]....
It is called recursively. The problem is the alpha value augments, apparently multiplying itself. Why? I successfully remove the child.
After whittling down of the options we've encountered a problem with PNG's and ActionScript 3 (AS3).
When loading a PNG 8 or PNG 32 with alpha transparancy we're getting the following error reported in Flash:-
"Error #2124: Loaded file is an unknown type" Now, we're dealing with some legacy images, and it appears as though this problem isn't universal - some images believed to be 32bit alpha PNG are loading. BUT, some conclusions:-
converting one image that was 32 bit alpha (NOT WORKING IN AS3) to PNG 8 index transparency DID work.
And converting that same image to PNG 8 alpha DID NOT work.
[Code]...
Can I fade out every single object at the stage with some code?
something like
ActionScript Code:
stage.alpha = 0;
Here is a graphic I've been working on --[URL]
Ignore the black thing in the corner -- it's my measuring tool.
The problem is that whenever you click on one of the states (all movie clips), everything else on the frame takes on the alpha fade too!
How do I make the alpha attribute apply ONLY to the state?
i am inside a movie clip and would like to set the alpha of a mc that is inside yet a different mc
_root.buttons1MC.setProperty("socialText",_alpha," 0");
am i close to having this right, it is not working for me
Does anyone know of a actionscript that can tween something to alpha=0. Id like to tween something to alpha 0% from alpha 100% rather then do every single one manually. I have a thumnail box that changes images just thought it would be easyer to put a action on the timeline to fade it out rather then tween it one at a time.
View 2 Replieshow to set the alpha of a TextField in AS3. I am able to get the textfield to display, and have it formatted using the TextFormat class, but setting the alpha value anything below 1.0 does not make any difference. I have tried nesting the textfield within a sprite holder and changing the alpha of the sprite but it doesn't work.
I know that I need to be able to embed the font for dynamic textfield alphas to work (at least that was the case in AS2), but can anyone tell me how to get that working in AS3? What I need is to have the textfield display Verdana, non anti-aliased (i.e. device font).
If I have a movie clip that contains stuff with transparency, and then I apply a colorTransform on it, the the transparency is gone...how can I tint a movie clip but maintain its transparency?
View 4 Replies