As of right now, I am trying to create a tiling effect for a game I am creating. I am using a tilesheet and I am loading the tiles to the sprite like so...
this.graphics.beginBitmapFill(tileImage);
this.graphics.drawRect(30, 0,tWidth ,tHeight );
var tileImage is the bitMapData. 30 is the Number of pixels to move retangle. then tWidth and tHeight is how big the rectangle is. which is 30x30
This is what I do to change the bitmap when I role over the tile
this.graphics.clear();
this.graphics.beginBitmapFill(tileImage);
this.graphics.drawRect(60, 0,tWidth ,tHeight );
I clear the sprite canvas. I then rewrite to another position on tileImage.
My problem is....
It removes the old tile completely but the new tile positions farther to the right then where the old bitmap appeared.
My tile sheet is only 90px wide by 30px height. On top of that, it appears my new tile is drawn behind the old tile. Is there any better way to perfect this.
again, all i want is for the bitmap to change colors
You could try to load the whole tilesheet in your sprite, and then redefine the scrollRect property each time you need to.
this.scrollRect = new Rectangle( 30, 0, tWidth ,tHeight );
Note that you can't just edit scrollRect.x, .y, .width or .height ; you have to redefine a new Rectangle each time.
Using scrollRect will probably be much faster that redrawing part of the bitmap.
You can read this excellent article from Grant Skinner for more informations about scrollRect.
Related
I'm brand new to AS3, trying to take a bitmap from the library and display it in the timeline with actionscript. Here's the code I'm using so far as per Adobe's site:
addChild(new Bitmap(new myBitmap(100, 100)));
and this works, but changing the dimensions in those brackets doesn't. How can I change the dimensions?
Also, how can I change the position of the bitmap? Right now it's at 0,0.
You first get a handler of that bitmap:
var theBitmap:Bitmap=new myBitmap();
Then, you can change its coordinates:
theBitmap.x=100;
theBitmap.y=100;
addChild(theBitmap);
In order to do scaling, you can also alter its scaleX and scaleY properties as with any other displayed object. In order to make a Bitmap object to be of certain size on screen, you have to scale it so that scaling parameter equals (new dimensions)/(old dimensions). But, if you want something else, you have to explain it further.
So I use bitmap.bitmapData.draw(erase,null,null,"erase"); to erase part of a bitmap that has the sprite called erase over it. The problem is that I need the bitmap to be blurred, and after I apply a blur filter the bitmapData.draw function doesn't work anymore. Meaning absolutely nothing happens. I tried using bitmapdata.applyFilter, which almost works except when I erase near a blurred edge it "unblurs" itself.
var erase:Sprite=new Sprite();
erase.cacheAsBitmap = true;
var blur:BlurFilter = new BlurFilter(10,10,10);
var blurs:Array=new Array();
blurs.push(blur);
bitmap=new Bitmap(bitmapdata);
bitmap.blendMode = "layer";
bitmap.y=-10;
bitmap.x=-10;
Refs._stage.addChildAt(bitmap,0);
also:
erase.graphics.beginFill(0xFF0000);
erase.graphics.drawCircle(stage.mouseX+10,stage.mouseY+10,35);
erase.filters = blurs;
erase.graphics.endFill();
bitmap.bitmapData.draw(erase,null,null,"erase");
It's just how the erase draw works. It erases pixels based on the alpha value of the object being drawn in erase mode. Where the alpha is above 0.5, that pixel get its alpha dropped to zero. Other pixels are not touched. This is what you experience when you draw with erase, then blur, then draw with erase again. No, Flash is not intelligent enough to do erase-blur, you might have to do it yourself. You might try drawing a transparent BitmapData with BlendMode.ERASE to do a blur-erase, but I don't expect it to return a blurred bitmap with blurred erased regions.
I need to place a transparent sprite over another sprite. The overlaying sprite will acept some mouse events. When a user move mouse over upper sprite a curve will be drawn. After it'll be processed it will be drawn on the base sprite (and erased on upper).
The idea I have now is to place the sprite, draw a rectange of size equal to sizes of sprite and set alpha to 0.
The question is a bit dump: maybe the proposed solution is not the best. Is there a better way to set width and height (as far a I understand Sprite.width = w; will not help)?
Thank you in advance!
You can't set dimensions directly, while you can draw over that Sprite. So you can do like this:
graphics.beginFill(0,0); // zero alpha fill
graphics.lineStyle(0,0,0); // invisible lines
graphics.drawRect(0,0,width,height);
graphics.endFill();
This way your Sprite can have its alpha remaining at 1, to not hide anything that's its child. Then, whatever curve you would decide to draw in that Sprite, you can draw within a child Shape object, via graphics.moveTo and graphics.lineTo.
UPDATE: According to comments below, setting alpha to 0 won't work with newer Flash player versions, so alpha should be set to a nonzero amount for the events to register on the overlapping sprite.
graphics.beginFill(0x808080,0.01); // almost zero alpha fill
I've a MovieClip with 10 frames and a photo (1024x768 px) in each frame. Now I'ld like to create a 174x174 px thumbnail from it and place it into a container (instance: thumb1 - thumb10)
How to make this happen?
var mc:MovieClip = new MovieClip();
var bitmapData:BitmapData = new BitmapData(mc.width, mc.height, ... );
bitmapData.draw(mc);
then just use the bitmapData to create a Bitmap and scale it the way you like.
Easiest way would be to create the thumbnails outside of Flash in a graphics editor (such as Photoshop or Paint.net). This would increase your file size slightly, but would probably work the best.
A simple way to do this in Flash, would be to give each image a Class linkage in the library, and just create a new instance of them when you need it. You can just set width and height (or scaleX and scaleY) on the Bitmaps to resize them, but make sure you set smoothing to true for each of them, or they wont look very nice.
I'm making a little thing in AS3, a "wanted" poster generator. I load the webcam inside my poster ("container") and put an attributesContainer next to it. There I have a hat, a mustache, ... people can drag and drop on the webcam instance. No problem here, but now I want to send it to Facebook. I know how that works, but I'm having some difficulties with keeping the position of the hat/mustache/... where the user wanted it.
For example: I drag the hat onto my head (middle of the poster), I hit the "take picture" button to draw Bitmapdata, and my hat is at coordinates 0,0 again. I believe I have to work with a Matrix, but I tried everything now and it just doesn't show up or stays at 0,0.
Any help? Here's some of my code.
private function sendHandler(e:MouseEvent):void {
var bmd:BitmapData;
var bmp:Bitmap;
// "container" contains poster+webcam img
bmd = new BitmapData(container.width, container.height, true);
bmd.draw(container);
//var hatMatrix:Matrix = new Matrix(1, 0, 0, 1, hat.x, hat.y);
bmd.draw(hat);
bmp = new Bitmap(bmd, "auto", true);
sendToFacebook();
}
You can make your life a little easier by structuring it different.
Have a top level container.
Add to that your webcam display
Also add to that your dropped items
Then you can just take a bitmap of the top level container instead of each piece and compositing them together.