Here is the code to make an MC the exact size in even proportions of whatever your choice. I choose 777 for this example.
my_mc.height = 777; // Can be anything you want.
my_mc.scaleX = my_mc.scaleY; /// This makes it the same proportions.
Now the questions is how can I tween this?
I'm afraid you have to tween both x and y scale values.
Other scenarios can be tricky.
Another alternative would be to tween an arbitary property of the movieclip, and letting a frame-based function (called on ENTER_FRAME event) that reads this variable and updates both scale values.
OR, making a custom movieclip class and let its internals handle a custom scaleXY property.
function tweenThis(newHeight:uint):void{
var oldHeight:uint=my_mc.height;
var difValue:Number=newHeight/oldHeight;
var newWidth:uint=my_mc.width*difValue;
new Gtween(my_mc,1,{width:newWidth,height:newHeight});
}
Related
everyone! I wonder is it bad practice.
In this case I pass the container to TicTacToe class,TicTacToe pass the container to MainMenu class,MainMenu class pass the container to Engine and etc. Engine pass to GameOver class and GameOver pass to TicTacToe the same sprite on play again.And that all display objects are added to this Sprite container.
Main(){
var container:Sprite = new Sprite();
var game:TicTacToe(container);
addChild(game);
}
TicTacToe(containerPar:Sprite){
this.container = containerPar;
MainMenu(this.container);
}
Is this a good practice?
The other way that I think is like tell of almost all my classes like Engine and MainMenu to extend sprite and I think is not a good idea.
Is there any other practices to add display objects to DisplayObjectContainer wich is added to stage ?
I want to know because i think it is very important and there is not much information on the internet.Thanks to everyone!
The syntax seems a bit messed up, it doesn't show too well what you are trying to achieve.
There are many ways you can reference a Sprite, or anything else, from everywhere.
You can use a singleton class, or a static variable for example.
Lets say you have a general Game class. In the class itself you can have a static variable named "container" that references the sprite you want. You can retrieve it with a getter or with a static method. So that you could, anywhere:
import Game;
var container:Sprite = Game.container;
// or
var container:Sprite = Game.getContainer();
this makes overall better OOP and cleaner code.
I hope this helps.
Basically I've got a bitmap which is an image that the user captures from a webcam which was previously stored as bitmapdata which I converted into a bitmap and added it onto the stage..
From here I want the bitmap to be selectable so I can do other things to it, so I realised I would need to add this into sprite in order to add event listeners onto it.
Having done so, for some reason my application ain't wanting to recognise the events added?
Here is the code I've got..
Bitmap..
//Create a new bitmap from the video capture
image = new Bitmap(bitmap,"auto",true);
//Set the width and height properties
image.width=150;
image.height=125;
//Set the stage position
image.x = 430;
image.y = 280;
stage.addChild(image);
Sprite..
var imageSprite:Sprite;
imageSprite = new Sprite();
imageSprite.x = 200;
imageSprite.y = 50;
imageSprite.addChild(image);
stage.addChild(imageSprite);
Event listener:
imageSprite.addEventListener(MouseEvent.MOUSE_DOWN, SelectWebImage1);
Function:
function SelectWebImage1(e:MouseEvent): void {
trace("Clicked");
}
I receive no errors from this but I noticed that when I have that code written in my application, all of the code underneath it doesn't seem to function?
I really don't know what i'm doing wrong, any help appreciated thanks!
When you set Sprite's dimensions, you implicitly set its scale, and also if you place some graphics by using width and height, the width and height includes any sprite's children, accounting for their position. You should place that bitmap into imageSprite and not set x,y proerties for the bitmap, this way you won't have to account for its position inside the sprite to position the bitmap.
As you well know in as3 we have a getBounds() method which returns the exact dimension and coordinates of the movieclip in the DisplayObject container we want.
Fact is that these data are calculated based on the graphics in their state in the MC at the frame it is while getBounds() is called.
What I want is the REAL bounds rectangle, that is the larger rectangle that the WHOLE animated movieclip will take in its container.
I thought of two ways:
1 - a flash built-in method that I don't know
2 - going through every frame always getting the bounds and finally returning the biggest (but what if it's a long animation? should I wait for it to play completely before I can get what I want?)
I hope I've been clear. If you need examples, let me know!
You can iterate through each frame without having to wait for the animation to play:
Let's say your clip is called bob:
var lifetimeBounds:Rectangle = new Rectangle();
bob.gotoAndStop(1);
for(var i:int=1;i<=bob.totalFrames;i++){
lifetimeBounds.width = Math.max(lifetimeBounds.width, bob.width);
lifetimeBounds.height = Math.max(lifetimeBounds.height, bob.height);
lifetimeBounds.x = Math.min(lifetimeBounds.x, bob.x);
lifetimeBounds.y = Math.min(lifetimeBounds.y, bob.y);
bob.nextFrame();
}
bob.gotoAndStop(1); //reset bob back to the beginning
It's more CPU taxing (so I'd recommend not using it if the above works for your situation), but you could also use getBounds() in the example above and compare the returned rectangle against the lifetimeBounds rectangle:
var tempRect:Rectangle;
var lifetimeBounds:Rectangle = new Rectangle();
bob.gotoAndStop(1);
for(var i:int=1;i<=bob.totalFrames;i++){
tmpRect = bob.getBounds(this);
lifetimeBounds.width = Math.max(lifetimeBounds.width, tempRect.width);
lifetimeBounds.height = Math.max(lifetimeBounds.height, tempRect.height);
lifetimeBounds.x = Math.min(lifetimeBounds.x, tempRect.x);
lifetimeBounds.y = Math.min(lifetimeBounds.y, tempRect.y);
bob.nextFrame();
}
I had this issue when converting animations to bitmapData frames, as I wanted all the resulting frames to be a uniform size and match the largest frame dimensions.
I basically had to loop through the animation 1 frame at a time and compare the bounding box to the current largest dimensions. I too thought it was a less than an ideal solution, but it worked.
So #2 is your best bet, as there is no flash built in method that provides what you seek.
Imagine there is a situation : I have 100 movieclips with instance names : MC1a, MC2a, MC3a .. MC100a
and i want all of them to be invisible is there any other way than :
MC1a.visible = false; ... MC100a.visible = false;
because in this way the code gets very heavy and i thinks it's not the right way. so i was thinking is there any possible way to be something like that :
MC*a.visible = false;
all the movieclips that contains 'MC' in the begging and 'a' and the ending to disappear ? maybe something with array ?
If the parent of all these movieclips is called container you can do :
container["MC"+i+"a"].visible=false
This is due to the script nature of ActionScript.
For your particular case you can do
for(i=0;i<100;i++){
container["MC"+i+"a"].visible=false;
}
If you don't have all number between 0 and 100 you can do something like this :
for each(MovieClip mc in container){
name=mc.name;
if(name.substring(0,2)=="MC" && name.substring(-1)=="a"){
mc.visible=false;
}
}
(This is non tested pseudocode written on the fly)
There are several ways you can achieve this. First - make a Sprite container, which will be their common parent, then alter its visibility. This is not a flexible way, for example, if your movie clips are located on two different areas of stage, and need to interact somehow, you might be unable to put them all under a single parent in your display list. The second way is to make an array out of those 100 movie clips at the time of their instantiation (if possible, of course), then you iterate through the array and assign their visibility in a loop.
Basically, if you have some objects that should form a structure, consider linking them somehow first, then altering their visibility or other parameters all together. Should you need to move them all at once, or hide, the container approach will be better. Should you need them to perform similar, but not exactly same actions (say you have monsters as movie clips, and you need them to move together, but each with their own direction and speed), you should have an array.
Another thing to consider, if there is a movie clip that has a name like "MCbig_a", that is, complies with your condition, but does not exactly belong to the group of MCs you desire to make invisible, you will have to take precautions about such occurrences.
Assuming that al children are added in the same container called myContainer
var container:MovieClip = myContainer;
var i:uint = container.numChildren;
while (i--)
{
var child:* = container.getChildAt(i);
child.visible = false;
}
Pretty basic question here, but its still got me a little confused..
I have an object(navigation menu bar) that I want to change the colors on with code, so in an updateColor function, I get the bounds of the object (which is a drawing shape contained in a movieclip) and redraw a new shape on top of it with the new color, but I've noticed that the last shape still exists behind this redraw.
I tried using obj.graphics.clear(); before the redraw but that didn't get rid of the original shape. Is there another command that I'm overlooking?
Unless you drew the object you wish to remove within the same graphics object, clearing won't work. You need to remove the DisplayObject.
Depending on the number of children you can do:
obj.removeChildAt(0);
This also removes movieclips / buttons you placed on the stage manually.
If you have a reference to the DisplayObject you wish to remove you can simply do
obj.removeChild(backgroundClip);
Note that you can also change the color of a DisplayObject directly:
import flash.geom.ColorTransform;
...
public var test:MovieClip; //instance on stage
...
var cf:ColorTransform = test.transform.colorTransform;
cf.color = 0xff0000;
test.transform.colorTransform = cf;
while(this.numChildren)
{
this.removeChildAt(0);
}
Will clear child object on this MovieClip,
if it's clearing too much, then put the shape drawing in a subclip, and clear the subclip.