ActionScript 3.0 :: Erasing Drawing From Stage?
Jan 12, 2010
I tried to erase whatever was drawn on the stage by using a similar function in a recent previous post but I'm not getting it.when I try to use it an error says that this is no longer supported. I tried addChildAt() and inserted different Num but it only erased everything including my button.the current code is:
var drawing:Boolean = false;
this.graphics.lineStyle(5,0x000000);this.graphics.moveTo(mouseX,mouseY);
this.addEventListener(Event.ENTER_FRAME, onLoop, false, 0, true);stage.addEventListener(MouseEvent.MOUSE_DOWN, onDown, false,0,true);stage.addEventListener(MouseEvent.MOUSE_UP, onUp, false,0,true);
[code]....
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May 19, 2010
I have the raster of dots on white background. I would like it when I DragOver each dot it becomes white so it looks like you are actually drawing white line by erasing the dots. Ive somehow found the way how to do it by making it transparent when I rollover. But it doesnt work with dragover. How to do it only when I hold down the mouse button and drag my mouse over the dots?
This is the script assigned to MC with one black dot (I copied this MC with one dot into another MC and multiplied it to have the raster):
this.onRollOver = function () {
this._alpha = 0;
} this.onPress = function () {
this._alpha = 50;
}
I've tried also this, but it doesn't work:
var erasepoint = false;
this.onMouseDown = function(){erasepoint = true;}
this.onMouseUp = function(){erasepoint = false;}
this.onRollOver = function () {
if(erasepoint){
this._alpha = 0;
}}
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Oct 11, 2010
I'm currently trying to debug a problem in Flex 4, in where a component is firing a custom event with its local coordinates translated to global coordinates (i.e. localToGlobal) and another component (in a separate "branch" of the display list hierarchy) recieves such event and uses it as a part of an animation, via globalToLocal. It should be a simple, coordinate-transformation system but it is not working.I'm trying to debug this, by using AS3's drawing API to draw circles where the Points should be.Here is the dispatching component (Component A in the image below):
// Check where is the local x,y
this.graphics.beginFill(0x0000FF);
this.graphics.drawCircle(this.x,this.y, 10);[code].......
One would expect the three circles (Red, Green and Blue) to correspond, each being drawn just before the event dispatch and one (green) on event listening. What actually happens is:
Blue circle is drawn where you would expect it.
Red circle is never drawn (hence, my question on drawing on the stage in Flex 4)
Green circle is drawn in an un-expected place.
EDIT: Here is an image that explains the relationship between components and where are the dots being drawn:
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Nov 5, 2010
I started working with AS3 a month ago, I know the basics and stuff, but I can't do that much. The user would draw lines by clicking on the stage. The code works exactly as I wanted it to, but it is on AS2 . I tried, but I can't 'convert' it to AS3. I would like to know how this code would work on AS3! Here's the download link of the .fla, so you can see better what I mean: [URL].
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Jan 13, 2010
I keep trying to change the code so that I can control the area for drawing. The attached code is where I left of after many tries. The movie clip box_mc is being called from the library.
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Mar 31, 2011
I'm drawing with Flash's brush tool and the marks I make are appearing not just where I draw them, but also in the timeline or elsewhere on the stage. It goes away if I minimize and restore, but this is a big time-waster.
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Jan 29, 2012
I have a little problem with counting all elements on stage. Flash, unfortunately is counting all objects on the stage without drawn objects (all shapes, including drawing objects, rectangles etc) all missed. Is there any way to count them?
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Jan 13, 2011
flash and at the risk of sounding like an idiot, here goes.My question is:How can I make it so that the stage is divided up into a grid of 4 by 4px spaces that can be filled with a color after a click?So far I have some code that lets you draw a 4 by 4px dot but the dots can overlap because there is no grid:
dot.addEventListener(Event.ENTER_FRAME, do_stuff);
/*dot is a movie clip of a 4x4 black dot*/
function do_stuff(event:Event):void
[code].....
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Oct 14, 2010
I have a fully working flash application, made in as3. Now i dynamicly added a movieclip and i would like to be able to erase that movieclip with a eraser of some sort, my goal is to be able pick up a sponge with the mouse and then start dragging over the movieclip and erasing the parts where i dragged over it.
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Dec 4, 2009
I got this code from [URL]; it writes an image to stage as a way of tile it.
holidaytile is an instance of a Gif Image.
But I want to change the Alpha so that my top layer shows through it, and I can't seem to figure out how to do that.
import flash.display.BitmapData;var tile:BitmapData = BitmapData.loadBitmap("holidaytile");this.beginBitmapFill(tile);
[Code]....
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Sep 29, 2010
I need to use a Timer for time controlled animation, time the drawing to occur every 500 milliseconds & Draw 20 circles in total. I also need to make sure the circles are completely drawn inside the limits of the stage...
import flash.events.TimerEvent;
import flash.utils.Timer;
// creates a new hundred-second Timer, ticks every 250 milliseconds
var faster_minuteTimer:Timer = new Timer(250, 6);
// designates listeners for the interval and completion events
[Code] .....
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Oct 6, 2010
The problem is when background of top or below label is changed, the top or below button is erased.
<mx:Canvas width="100%" height="100%">
<mx:LinkButton icon="{icon1}" width="25" x="10" y="10"/>
<mx:LinkButton icon="{icon2}" width="25" x="10" y="100" />
<s:VGroup width="100%" height="100%" id="lst" click="highlight(event.target as Label)" gap="0">
<s:Label />
[Code]...
So do anyone know the possible solution for this problem?
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Jul 18, 2011
I got the following question.
i added the following elements to the stage:
homeBg = new HomeBg();
homeMask = new HomeDrawBg();
addChild(homeBg);
addChild(homeMask);
I allready instantiated them in the beginning of the document. But my problem is the following. the homeBg layer is a image, the homeMask layer is the same image but it has a pencil scetch look. What i want is that wherever i move my mouse, the homemask layer should be erased so the bottom layer becomes visible(only where the mask is erased). So how can i tell the mask layer to erase itself if the mouse is over it?
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Feb 25, 2009
I'm attempting to create a dry erase board style animation effect in my flash movie where I'm erasing the text, like a dry erase board type effect. I've tried doing a frame by frame mask animation and it's not turning out very well. Has anyone attempted this before? Are there any tutorials or maybe after effects > flash tricks?
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Mar 20, 2009
I'm in need, again, of some assistance. I'm making a game with 2 pictures. and the concept is built on that you erase part of the top-bitmap to see the bitmap under.How can I accomplish this?I tried to wrap my head around the bitmaps and the draw and the FillRect but can't get it to work completely.Basically I want 2 bitmaps, and a cursor which erases parts of the top one to show the one underneath.
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Nov 10, 2009
I am trying to erase one movieclip from another using the blendmode="erase" setting, but can only get it to work on the stage as the parent. This means it erases a hole through everything! The attachmovie also doesn't seem to work as I was expecting and I was hoping that when you drag the movieclip, the attached clip would move with it? If you check out the FLA [URL] you can see whats happening right now and what I want to achieve (diagrams provided in FLA).
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Jul 28, 2011
I have a little snippet of code that allows the user to create a line with the mouse, and clears the line if they end up touching the hitbox with the mouse, while they're drawing the line. It works fine when it's just thrown onto the main timeline. However, when I try to encapsulate it within a movie clip, it suddenly doesn't work. At all. Are there any suggestions as to why this is happening? Here's the code.
[Code]....
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Jul 15, 2004
This time round i need to get the pattern drawn on the drawing board to be repeated on another area of the stage.I need it to be repeated 4x4 tile.
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Oct 8, 2008
Someone told me once that every function in Flash has some associated actionscript being executed behind the scenes, e.g. converting a graphic to a symbol or drawing a pentagon on the stage. This person also told me that there is somewhere in which you can view said ActionScript as it's being executed. How can I do this? I deem such a feature necessary to do the projects I have been given, especially having very little experience with AS.
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Sep 29, 2009
I'm trying to create sort of an eraser to remove sections of a bitmap on stage.
I have achieved this by creating a MovieClip in flash that is a circle and exporting it as a Class called Hole.
Now I use this MovieClip to erase a circle section of the image using the following.
var mat = new Matrix();
var ct = new ColorTransform();
var hole = new Hole();
mat.translate(x,y);
image.draw(hole, mat, ct, "erase");
Now what im trying to do is scale the size of the circle depending on a certain variable but no matter what I try the scale doesn't seem to change and. The size seems to stay the same as I drew it in Flash. I tried adding the following line
hole.width = hole.height = size;
I even created a class file called Hole and the size as a parameter
var hole = new Hole(200);
This didn't work either it still appeared to have the same size. I have even tried altering the scaleX and Y values with no success.
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Mar 27, 2012
flash: Erasing area dynamically?
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Nov 26, 2008
for the past couple of weeks I've been learning AS3, and for a school project I'm doing a remake of the popular DOS game Liero. Everything is working fine, I got a layer of dirt that I am shooting away, but the problem is that after a few hundred bullets, the game starts to lag heavily whenever a shot is fired.I'm using a simple bitmap and a brush to erase the parts where the bullets hit.
// Drawing stage
bmap = new BitmapData(1100,800, true, 0);
dispBmp = new Bitmap(bmap);
[code]...
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Aug 20, 2009
How can I erase lines I've drawn using
_root.lineStyle()
_root.moveTo()
And
_root.lineTo
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Feb 2, 2010
I'm working with Threshold on BitmapData class. I need the threshold return the modified pixel (the pixels match with the equation).I need to detect how many pixel have changed to get the percentage of the complete erasing! I did it with getPixel32/setPixel32 but it's faster with threshold (i'm doing it on 15 bitmapdata at the same time)
pixelChanged += bmp.bitmapData.threshold(bmpBrush, bmpBrush.rect, new Point(this.stage.mouseX, this.stage.mouseY), ">", 0);
so, each pixel bigger than 0 should match this equation ... and they will be set to 0 after that (default color value). Next time, because they are 0, pixels are not suppose to change again because 0 is not bigger than 0 ! But it still return me a value, like if the pixel have changed! I've tried with different combinaison of mask/threshold .I join a sample of my problem (drag the triangle and check the output window ... the number increase even if the pixel is transparent 0x00000000)
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Apr 20, 2011
I have two layers namely topLayer_mc and bottomLayer_mc. The actual vector drawing is drawn on the top layer and onmouseUp of the tool, a bitmap copy of the vector graphics on the top layer is taken and added as a bitmap to the bottom layer. The top layer is cleared subsequently. It is working for the pencil tool.Now I need to create an eraser tool. This is where things get tricky. In the application there is an option to save the image as png, so alpha has top be preserved. So the coventional method of draw a brush using the vector and using the draw method of bitmap will not work. Of course, on a visual level it would work if the brush drawn using the vector is to have the same color as that of the background.
What I need is to excatly erase the pixels.Now I have created a brush tool using the conventional technique and clearing is possible but what I need is to exactly erase the pixels. Is there some technique to draw this ? This is the code that I am using: I have also uploaded the swf and source code, When trying out, please draw all over the stage using the pencil (press Pencil button and start drawing)The source fla is also provided.
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Jul 21, 2011
I've got to build a kids game at the moment for my school, and I was planning to have a sort of archaeological dig, with the kids required to rub the screen (it's for a touch-screen) to "un-earth" the bones underneath.I was thinking of either erasing an overlay and checking for a hitTest between the two objects, or coloring in with a line or something.Is it possible to color something in and check when the object has been completely colored? or possible to erase an overlying object? and if so, can you point me in the direction of a tutorial or a quick explanation?
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Sep 21, 2006
What (if any) is the actual differance between removeMovieClip() and unloadMovie() for use in erasing duplicated movie clips (using duplicateMovieClip() )? I was looking over some of my code and noticed I used both without much rhyme or reason as to why one over the other.
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Nov 9, 2010
i've tried to simulate a pencil tool, for drawing above a imagem, but the drawing is below the picture. How fix it?
[Code]....
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Jul 22, 2009
Basically I've got a reasonably complex drawing object in a fla and I want to reproduce it in a class definition using the drawing api. However obviously this is a tedious task, so is there some trick or automated method of doing this?
Last time I needed to do this it was a drawing of an arrow and I ended up writing down x,y,width,height values for everything but this one has curves in it which I don't have experience with drawing anyway.
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Nov 15, 2009
My code is on the main timeline.I call a function loop to draw lines between them.The lines are drawing between the right x, y values BUT between those values on the main stage, not those values within the kite.For example, dot1_mc is at x100, y0 inside kite. the line that should go from its center, draws from stage x100, 0.How do I draw the lines inside kite so that they draw between the dots?Heres my code that draws the linesPHP Code:
function loop():void{ lineDrawing.graphics.clear(); var a:Point = new Point(kite_mc.dot1_mc.x, kite_mc.dot1_mc.y); var b:Point = new Point(kite_mc.dot2_mc.x, kite_mc.dot2_mc.y); var c:Point = new
[code].....
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