I am working on a flash sound mixer application with multiple sound channels, and I am having trouble with the lights beside the volume knob.
Is there a way to hide just a part of an image?
On the image below, image-2 is on top of image-1 to create some kind of volume level indicator effect, and how much of image-2 is shown depends on the value of the volume.
image-url: http://s30.postimg.org/r3ow1g5bl/volume_lights_level.png
I've tried by just reducing the height of image-2, but it looks awful and distorted.
Is there something in flash that works closely the same as CSS's behavior.
example: I'll just make image-2 a background of a shape, and when I reduce the shape's height, the image-background does not get distorted or changes it's height as well.
By searching for solutions, I have come across the mask property, but I don't quite understand how it works, and most of the examples shown are images placed inside circles.
Is the mask property applicable in this situation?
I'm quite new to flash so I don't know a lot of things yet.
You can indeed use a mask.
How to programmatically create your mask
Put an occurrence of your image named myImage on the stage, and put over this occurrence a mask named myMask with the same dimensions. You can apply myMask mask to myImage using it's mask property like below:
Main Timeline
myImage.mask = myMask;
function mouseMoveHandler(e:MouseEvent):void {
myMask.height = myImage.y - e.stageY;
}
stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMoveHandler);
You have just to adapt this code to your animation, in the function where you click your button.
I got it working now, many THANKS #VC.One. heres how I did it.
Imported img-2 to stage, converted it into symbol(type:Movie Clip), assigned instance name: img2_mc.
I created a new layer for the mask, drawn a rectangle using rectangle tool, converted it also to symbol(type:Movie Clip), assigned instance name: mask_mc.
Then applied the mask to img2_mc.
/* the code */
img2_mc.mask = mask_mc;
function onEnterFrame(event:Event):void{
var volumeKnob_y = volSliderKnobOn.y + 12; // adjust it to the center of the knob
mask_mc.height = volumeKnob_y;
}
Related
I want to mask the png image pattern.png with another image - mask.png, but it doesn't work at all and I can't find the reason. Instead of masking the image, the mask just disappears and the pattern stays the same as it was.
I tried making a MovieClip, drawing e.g. a circle and using that as the mask instead of mask.png and it works just fine. Is it because you can't use loader objects as masks? How do I make it work?
edit: After changing the size of mask.png to be smaller than the pattern, I've realized that it actually does kind of work, but what happens is instead of cutting the pattern into the shape I've drawn in the png file it just cuts it into the shape of the entire file, as in, it counts the rectangular transparent background as well. How can I make it cut out just the shape?
var mask:Loader = new Loader();
mask.load(new URLRequest("mask.png"));
var pattern:Loader = new Loader();
pattern.load(new URLRequest("pattern.png"));
pattern.contentLoaderInfo.addEventListener(Event.COMPLETE, loadComplete);
function loadComplete(e:Event):void {
addChild(pattern);
addChild(mask);
pattern.mask = mask;
}
Your code is looks correctly. The mask property of DisplayObject wants DisplayObject too. But try to make few things, to find the trouble:
You have only one listener, to pattern.png. But you must be sure, that mask.png has loaded already too.
Despite that Loader is DisplayObject too - try to get content from loader for mask, and just after that try to use it.
*Ah, and one more thing. You must at first add listener, and only later try to load.
I have a spritesheet (packed by the wonderful TexturePacker) that looks like so:
and the animation as an animation works well using the current code.
However, when the animation moves to a frame where the bounding box is smaller (e.g. when the legs are closer, when the figure is kneeling, etc.), the image distorts so that the smaller bounding box fills the bounding box of the sprite.
How can I fix this?
The spritesheet above is a frame-extraction from a sample Adobe flash animation.
Easier way:
You can make all the textureregions the same size.
Hard way:
Keep it like this, but you need to save and calculate the size and position of every textureregion to draw.
I personally recommend you the first option, just make all the image the same size.
cant give you a link but here is what i do for these situations
while making the texture packer strip the white space
make a array of AtlasSprite for images
then in my render method
public void render(float delta) {
atlasSprite = animation.getKeyFrame(statetime, Animation.LOOPING);
atlasSprite.draw(batcher)
};
in my update method, which gives exact rectangular bounds of the current image displayed. Since you have stripped the whitespace and used AtlasSprite so bounds will be without blank whitespace.
public void update(float delta) {
bounds = sprite.getBoundingRectangle();
}
P.S. this is just a pseudo code and many syntatical error could be there its just to give you a idea
I am new to AS3 scripting. I have a wide image (movie clip "preform_mc") that I am masking and would like for right button ("right_mc") to dynamically move the image.
The code below moves the image to the right, but its not a dynamic movement (would like an animation effect) and I cant control when the image should stop moving, basically a max amount for the x coordinate.
any help is greatly appreciated!
right_mc.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_2);
function fl_MouseClickHandler_2(event:MouseEvent):void
{
preform_mc.x += -100;
}
Take a look at Greensock Tweening Library. Using that library you'll be able to easily make a smooth animation of a moving image. For the control of max X you should write an if statement to check whether preform_mc.x is more than the max amount you want.
Code will look something like this:
var min_x:int = -500;
function fl_MouseClickHandler_2(event:MouseEvent):void
{
if(min_x < preform_mc.x)
TweenLite.to(preform_mc, 0.5, {x:preform_mc.x - 100}); // using the library I provided a link to
}
I would like to tween between a short rounded rectangle and a tall rounded rectangle. (I only want deal with the height - no other parameters). I am programming with actionscript 3. My tweening engine is TweenLite.
I have been tweening a sprite that contains a rounded rectangle. The tweened sprite produces distortion. I suppose that I have been scaling the original image, rather than the height of the rounded rectangle?
Here is a simple example of my code:
-
Draw the rounded rectangle:
roundRect = new Sprite();
roundRect.graphics.beginFill(0x000000);
roundRect.graphics.drawRoundRect(0,0,50,15,4,4); //Original Height: 15
roundRect.graphics.endFill();
addChild(roundRect);
Then I listen for a mouse click event on the rounded rectangle.
The mouse event triggers a function with the following code:
TweenLite.to(this.roundRect, 1, {height:120}); //Final Height: 120
-
I would like to tween the height of the rounded rectangle itself. I would hope that this would not produce the unwanted distortion. Is there any way to achieve this?
Thank you.
This can be achieved with "9-slice scaling".
Below are two tutorials on how to setup a Movieclip to use the 9-slice guides, one is done through the IDE (using the guidelines) and the other through code (by defining a rectangle called grid and assigning this to the movieclip's scale9Grid property).
http://www.sephiroth.it/tutorials/flashPHP/scale9/
http://livedocs.adobe.com/flash/9.0/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00001003.html
Once the scale9Grid property has been correctly assigned you can scale (and Tween) the movieclip as intended without any distortion.
It might also be worth reading: http://www.ovidiudiac.ro/blog/2009/05/scale9grid-work-and-fail/ which describes various scenarios when scale9grid does and doesn't work. (mainly to do with having nested children and non-vector graphics inside of the grid).
Hope this helps.
As an alternative, and since its only a rounded rectangle, you could also do something like this:
var rectHeight = 15;
var roundRect = new Sprite();
addChild(roundRect);
updateRect();
function updateRect() {
roundRect.graphics.clear();
roundRect.graphics.beginFill(0x000000);
roundRect.graphics.drawRoundRect(0,0,50,rectHeight,4,4);
roundRect.graphics.endFill();
}
roundRect.addEventListener("click", click);
function click(e) {
TweenLite.to(this, 1, {rectHeight:120, onUpdate:updateRect});
}
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.