I have an array of rectangular sprites that are on the stage, each with a different ColorTransform value. I want to be able to click on any one of these rectangles and access the ColorTransform value of this object. What is the best method of accessing whichever rectangle was clicked on?
You can add the same click handler to each rectangle sprite and use event.currentTarget to handle which sprite was clicked: Sprite(event.currentTarget).transform.colorTransform.
Or, if you put all the sprites in the same container, you can add a click handler to the container and use event.target to know which sprite in the container was clicked: Sprite(event.target).transform.colorTransform.
Related
I am trying to achieve sort of like an "extender" to a button. I want it to be like a invisible mask, and when you click on it, its the same as clicking on a button directly. Is this possible with an addchild method? Also, if possible, without having to make extra addeventlistners for the mask, so that additional object is seen as that same button. I know it can be done using a simplebutton, but what about a fl.controls button?
You an use either a Sprite or Movieclip as clickable button.
Create both the "button" part and the "mask" part within same MovieClip, and give that whole MC one event listener.
Example if called: myMClip_Button...
myMClip_Button.addEventListener(MouseEvent.CLICK, handler_Mouse_Click );
Later, to access / modify anything within the MovieClip, just use a path:
myMClip_Button.myButton = something;
myMClip_Button.myMask = something;
I want to dynamically change the shape of a shape in as3. Say for example, on clicking and dragging on shape square the shape should change according to my mouse movement, direction. I have pasted a link below which display my requirement, selecting one shape and edit edges option, then click the shape and drag, the shape will change according to mouse movent and direction based on some math calculation. Is that possible in AS3.
http://www.shodor.org/interactivate/activities/Tessellate/
Yes, it is possible to make this type of programs.
I suggest you looking into Sprite's graphics object. It has the API to draw primitives, lines and curves.
The reason why you should use Sprites in this case is because it extends InteractiveObject => they support user input, like mouse or touch inputs.
Here's an example of creating triangle:
var s:Sprite = new Sprite();
s.graphics.lineStyle(1, 0x000000); // optional
s.graphics.beginFill(0xff0000); // optional
s.graphics.lineTo(0, 100);
s.graphics.lineTo(100, 100);
s.graphics.lineTo(0, 0);
s.graphics.endFill();
addChild(s);
You can combine mouse events to track input and event ( enter frame in particular ) to redraw your shape depending on the mouse position.
To redraw the shape, you might want to call graphics.clear() method on that object to erase it from the screen.
I have a movieclip moving and when I click him I want that appears a hole.
Its possible do that with actionscript? how?
If your hole should appear there the mouse clicks, you could create new Sprite, draw two circles (one bigger than your MovieClip, another at size of you hole, both at position of your click) using his graphics property. Fill it with any color. It should look like donut.
After that assign created Sprite as a mask for your MovieClip.
youMovieClipId.mask=createdSpriteId;
After that, you could add mask as child of your MovieClip, using
youMovieClipId.addChild(createdSpriteId);
Now created mask will follow your MovieClip.
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.
Anyone who can help?
Looks like this might be what you're looking for:
http://www.piterwilson.com/personal/2008/05/07/bitmapdata-erasing-in-as3-with-custom-brush-shape/
Is the background behind the MovieClip always the same?
If so you can put an image of the background over the MovieClip you want to erase, and mask that image so it becomes invisible, then add a click listener that draws a circle in the mask when clicked. This way it'll look like the MovieClip is being erased.
With getPixel you can loop over the mask and detect the percentage of the MovieClip that has been erased, so you can remove the clip from stage when it's fully erased.
Is there something like the java 'glasspane' in as3?
The glass pane is useful when you want to be able to catch events or paint over an area that already contains one or more components. For example, you can deactivate mouse events for a multi-component region by having the glass pane intercept the events. Or you can display an image over multiple components using the glass pane. http://java.sun.com/docs/books/tutorial/uiswing/components/rootpane.html
Why do this? While some animations are underway in flash, I want to prevent any mouseevents from firing. I could remove all listeners systematically, then re-add them after the animation, but if there is something like a glasspane, it might be an easier way to achieve the same effect.
My current thinking is to:
add a sprite to the stage
stretch to width and height of the stage,
give the sprite the highest z-order,
grab all events on this sprite, and stop their propagation?
if you set
enabled=false;
mouseChildren=false;
on to the top most DisplayObject it should disable all mouse events for your app. I've used it and it works a treat.
For a more specific approach, e.g. only block clicks but let mouse down etc. through I use this approach. It uses a 'clickBlocker' stage event handler during capture phase, stopping propagation to any other object.
public function blockClicks():void{
if(!stage) return;
stage.addEventListener(MouseEvent.CLICK, clickBlocker, true); //useCapture!
}
private function clickBlocker(event:MouseEvent):void{
trace("Me (the stage) gets the "+event.type+" first, and I block it #"+event.stageX+"/"+event.stageY);
event.stopImmediatePropagation();
}