ActionScript 3.0 :: Trace The Path Of An Object By Using SetPixel On The Object's Position Every Frame In A BitmapData/Bitmap Pairing?

Feb 16, 2011

I'm trying to trace the path of an object by using setPixel on the object's position every frame in a BitmapData/Bitmap pairing. These pixels aren't showing up normally and I suspect I have a fundamental misunderstanding of the BitmapData class. Here's what I'm doing:

public var contrailBase:BitmapData;
public var contrail:Bitmap;
private var contrailColor:uint;[code].....

Using this code, the red pixels don't show up. If I initialize contrailBase to 0xFF000000 instead then I get a black screen on which the red pixels DO draw, but I need the bitmap to be transparent except for the contrail. What am I doing wrong?

View 2 Replies


Similar Posts:


ActionScript 3.0 :: Use The BitmapData Property Of A Bitmap And Pass It To The Constructor Of A New Bitmap Object?

Aug 20, 2009

I know the topic of "duplicating" movieclips is a hot issue with the new virtual machine. Luckily, I understand the implications. I only am [currently] interested in duplicating a Bitmap. See, I load an image from an URL using 'flash.display.Loader.load', which is a non-blocking operation in Flash Player.However,I may use multiple copies of the loaded image (which is reported to be a Bitmap, naturally) in the display list at the same time.Hence, I naturally do not want to load the image from an URL every time, because I don't want to wait for a non-blocking call to complete. Nor do I need to - I mean one copy is already loaded, so it should be possible to just "duplicate" it, right?

My idea is to do use the bitmapData property of a Bitmap and pass it to the constructor of a new Bitmap object. I have not tried the following in action, but I want to hear whether any of you did and if the following would not work, what would:

Code:

var original_bitmap: Bitmap;
var copy_of_original_bitmap: Bitmap = new Bitmap(original_bitmap.bitmapData);

LiveDocs mention that the BitmapData being passed to a Bitmap constructor is "being referenced", which to me might suggest it cannot be used twice? There is also the BitmapData::clone() method, which I am not sure is applicable here or not.I know this is a lot of talk instead of just trying this out, but I test so much Flash Player code daily just to see "what works" (which should be documented instead by Adobe),

View 4 Replies

Flash :: Load A Bitmap File Into A BitmapData Object?

Mar 31, 2009

In Flash, the BitmapData object can be used to store bitmaps in RAM, you can later draw them to a MovieClip using the beginBitmapFill() method.

How do you load an external bitmap file (.jpg) into a BitmapData object?

View 5 Replies

Flash :: Search BitmapData Object For Matching Pixel Values From Another Bitmap?

Jun 16, 2010

Using Actionscript 3 is there a way to search one bitmap for the coordinates matching pixels of another bitmap?

[URL]

Somehow you would have to loop through the bigger bitmap to find and the the pixel range that matches and return those coordinates. For example the Bitmap with the "E" is 250 pixels over and 14 pixels down in the bigger bitmap.

View 2 Replies

Flex :: Convert And String(path Of Image) To A Bitmap Object?

Jan 6, 2011

The solution should be straight forward but I cannot find it, my problem it's that I'm reading a xml, and one of the properties inside the xml it's a Bitmap path(string), when I`m reading this xml I would like to convert this string to a Bitmap Obj so I can use through my MXMLs.

View 4 Replies

Flash - Draw A Bitmap In Graphics-Object At Any Position?

Mar 30, 2011

Is it possible to draw a Bitmap to a Graphics-Object like

this.graphics.beginBitmapFill(bitmapData, matrix, false);
this.graphics.drawRect(0, 0, w, h);
this.graphics.endFill();

with an offset?

A simple moveTo(x, y) call before beginBitmapFill does not work :/ Neither does changing the x and y value of drawRect... (That just seems to have the same effect as an translation with the matrix...) Additionally I don't want do draw that thing in a separate Graphics-Object and add that one into the other...

View 2 Replies

Actionscript :: Flash - Make An Object Snap To Another Object Then Follow Its Path?

Apr 15, 2011

I am currently trying to create an app using flash AIR.I would like to find some more information on how to make an object snap to another ojbect then follow its path, eg. a person object is already on the stage, then drag an arrow to the object which snaps to it, then on play button it follows the arrow path. all in pure actionscript, no guide layers.

View 1 Replies

ActionScript 3.0 :: Does Cached A Bitmatp Improve Speed Of Vector Object Or Bitmap Object

Aug 5, 2009

does cached a bitmatp improve speed of vector object or bitmap object?

View 1 Replies

ActionScript 3.0 :: Senocular's Path Class - Take Line Paths - Drawn And Convert Them Into A Path Object?

Feb 15, 2010

I was wondering if it possible to write up some AS that will take line paths that you have drawn and convert them into a Path object? For example say you drew a jagged line from left to write, would there be a way to have AS convert that into a Path object.

View 11 Replies

Oop :: Manually Setting Object's Position Or Have The Object Do It All?

Jun 11, 2010

I'm stuck thinking about the best way to go about setting a line segment's position, I have a class Line(length, angle, previous) being called from a class Polygon. Right now I have:

public class Line extends Sprite {
public function Line(length:Number, angle:Number, previous:Line = null) {
if (previous != null) {
this.x = previous.end.x;

[Code].....

View 1 Replies

ActionScript 2.0 :: Drag An Object Into Another Object And It Goes To Another Frame?

Mar 17, 2002

I need to know how you drag an object into another object and when the click is released it goes to another frame, and if you release not touching the other object the draggable object will go back to the place it started in

View 7 Replies

ActionScript 3.0 :: Bitmapdata.hitTest - Bitmap 'emptyBitmap' With Bitmap Data Created

Feb 3, 2009

I'm cutting my teeth in actionscript 3 on a game that has a character running through a world. So, I have set up my Hit Testing by using the bitmap data hit test method, since I figured my world is going to be destructible - it'd be nice to update the level and then redraw it and have the character interact with the new change. (That works beautifully) I am however; a bit confused as to how I have my hit Testing set up. I've been messing around with it, and it works for now - but I'm not sure why.. currently, I have a character set up by using a class I built and using a series of animations I created. So, this character has a walking and falling animation, etc. This is a movie clip.

Then there's a bitmap 'emptyBitmap' with bitmap data created - however; I never really added this as a child to the character. This is sized to the dimensions of my character. My level is created as a movielip, then it's drawn to a bitmap - when the level movieclip is changed, the bitmap redraws, and that's how this updates.

[Code]....

View 1 Replies

Actionscript 3 :: Graphic Object BitMapData Type The Same As BitmapData Type?

Dec 29, 2009

The title might be a little misleading. Look at my code and I will explain

public static function loadTile(tileDir:String = "empty"):void
{
if(tileDir != "empty")
{
tPoint = new Point(0,0);
tRect = new Rectangle(0,0,30,30);

[Code]...

I am trying to do tiling with sprites. I want my tiles to be interactive, so that is why I am using the sprite object instead of using regular bitMaps to represent my tiles. You might be wondering why I wouldnt just use graphics.beginBitmapFill(tImage); and graphics.drawRect(0, 0,tWidth ,tHeight ); to pick out the tiles I want to use. Well reason being is because it turns out that drawRect() first and second parameters actually alter the location of where the actual sprite sits at.

So if I set the x and y properties of the sprite to x = 20, and y = 20. then I set my drawRect(20,20). it actually adds an extra 20 pixels to my x and y coords of my sprite. And I know the reason why, I just need to know a better way.

View 2 Replies

ActionScript 3.0 :: Trace All Properties Of An Object?

Sep 4, 2008

how to trace all properties of an Object regardless of data type?

View 4 Replies

ActionScript 3.0 :: How To Trace Items Name In Object

Feb 19, 2011

how to display item name in object. I have got object and i would like to get its child but i don`t know name of that item. So i thought that i may trace that name but i don`t know how.

View 1 Replies

ActionScript 3.0 :: How To Trace Location Of Object

Feb 4, 2012

How do you trace the location of a object?

View 2 Replies

ActionScript 3.0 :: Trace All Of An Object's Properties?

Feb 16, 2012

Is there something that will let me trace all of an object's properties? (and wow typing the message before coming up with a title makes a difference)

View 1 Replies

ActionScript 3.0 :: Trace Object In Loaded SWF

Jul 23, 2010

Is this possible? I need to add a Click event to a button (actually several) in a swf that I've loaded. Is this possible? I'm currently trying to trace the objects but getting nowhere.

View 5 Replies

Erase An Area In A BitmapData Object?

Oct 11, 2009

Flex 3, ActionScript 3, Flash player 9.

I have a picture in a BitmapData object. And an array of points. I nead to erase the part of the picture inside a polygon specified by the points. In other words, draw a polygon specified by the points and fill it with transparency.

View 2 Replies

Actionscript 3 :: Adding A Object To A BitMapData?

Dec 28, 2009

I have 3 objects. One BitMap that acts as my canvas. And 2 bitmapDatas. One is my buffer and another is my tiles. I am creating a tiling effect for a game. I would like to take my tile:BitMapData, and turn it into a custom object. reason being is I want each tile to be interactive. So I can click on each one. Is it possible to turn my bitMapData that represents a tile, into a custom object that has properties and methods. Sort of like a movie clip. and draw it into my buffer ?? Could I create a new class that extends bitMapData ?? Or would I have to get rid of the buffer and draw the tile objects directly into the BitMap ??

In other words, what is the best way to put Sprite or a tile into a BitMapData object or even a Bitmap.

View 2 Replies

Flash :: Use HitTest Between BitmapData And An Object?

Aug 23, 2011

I have converted a PNG into a bitmap, then converted that into bitmapData.

I have a object called _player, and I wish to add collision detection, however I can seem to get it to work.

my code is:

if(bmd1.hitTest(new Point(_player.x, _player.y))){
trace("hit");
}

bmd1 is my bitmapData,_player is the object is wish to test against.

I am getting the following error:

1136: Incorrect number of arguments, Expected 3

I have looked around but cannott find what argument I am missing

I have tried

if(bmd1.hitTest(new Point(_player.x, _player.y), 50, _player)){
trace("hit");
}

I should mention that the reason for me taking this approach is that I have a PNG, with transparent areas, I need to test for collisions in the non-transparent areas, which is why I was using this approach

I have a PNG, i import that and convert to bitmap, then convert to bitmapData

View 3 Replies

ActionScript 3.0 :: Split BitmapData Object In Two?

Sep 30, 2009

I'm really struggling to work out how to split a BitmapData object into two separate bjects, and eventually add them to a mc and animate them.I can successfully create a new Bitmap out of the left half, but when I try changing the Rectangle props for the second Bitmap draw method to make a Bitmap out of the right half, it doesn't work?Here's my code:

ActionScript Code:
// 'image' being a MovieClip on the stage
var bit1:BitmapData = new BitmapData(image.width*0.5, image.height, true, 0xff000000);

[code]....

View 4 Replies

ActionScript 2.0 :: Creating BitmapData Object Of Jpg

Sep 4, 2007

I am trying to create a BitmapData object of a jpg that is loaded into a movieClip, so that I can then remove the jpg and have just the BitmapData of the image to manipulate. I have the original image loading into my temporary MC without any problems..and am using a listener to check to make sure that the image has been fully loaded before it moves onto creating an empty movie clip for the BitmapData... but for some reason the BitmapData isn't working as nothing shows up in my holderMC.. and it says the width of the holderMC is 0 when it should be something liek 367 for the 'surf.jpg' test image I am using. My code is below..

Code:
import flash.display.BitmapData;
stop();
_root.createEmptyMovieClip("tempMC", 1, {_alpha:0});

[Code].....

View 1 Replies

ActionScript 1/2 :: Trace A Random Object In An Array?

Oct 29, 2011

I have a simple array[code]...

now i want to check which animal was chosen? [code]...

what do i write in the if brackets?

View 3 Replies

ActionScript 3.0 :: Convert Loader Object To BitmapData?

Jun 30, 2011

I am writing a script in which i want to do collision detection with Bitmap. Actually i took the script from book. I am using Loader class instead of Embed tag because i am using Flash IDE CS 5. If you see the code then everything is fine except one thing. That in hitTest() method i am using Loader instead of Bitmap. So it gives me error that parameter type should be Bitmap. Now my question is how can i convert Loader object to Bitmap so i can use it in my hitTest() method. Here is my code

[Code]...

View 3 Replies

ActionScript 3.0 :: Spooky Object Values - Trace Output

Dec 16, 2011

This includes some code and some traced output. I've been looking at this for 2 days and it stupifies me. I'll elaborate: There is a game object, its a dictionary object containing a screen tile with index/name  tile_x_y So i can look it up using the x and y coords. The object contains lost of stuff but in this case especially: x, y , width, height, xtile, ytile (self explanatory i assume) & xmove, ymove (-1,0,1 depending on direction.)

So, now these objects move around the screen (yes its just a game) and check if they hit the screen bounds and if they try to move onto tiles that are occupied/non traversable. It goes fine for most objects but sometimes, or for some objects  (no clue why and it changes on restart), halfway the boundaries check, the object internal x and y values go ballistic and i end up with a reference error on the dictionary object because tile 280 30 just doesnt exist.

[Code]...

View 1 Replies

ActionScript 3.0 :: Trace Object References For Garbage Collecting?

Oct 12, 2009

I'm trying to get my head around optimising AS3 code and clearing things out for garbage collection.

I understand that each time an item is referred to in the code it has its reference count increased by one, so I was wondering if there is a trace option I can use to see how many references each of my objects has?

I can then see where things are getting left behind (if they are) and where I can make optimise better.

I think it would help me work out several issues if I was able to do this

View 1 Replies

Flash :: Transform Single Channel Of BitmapData Object

Dec 30, 2009

I have a BitmapData object with an alpha channel. I'd like to know the fastet way to offset that alpha channel in ActionScript3 (FlashPlayer10). By offsetting I mean shifting all pixels of that channel in one direction (wrapping around the image borders) while leaving the color channels as they were.Is there a good way to apply a such a transform to one channel only?

View 2 Replies

Actionscript 3 :: Avoid Create New BitmapData Object In Loop?

Nov 17, 2010

I want to store the bitmap data from _sampleTile in array, but I was wondering how to increase the performance. If I do it like this:

var _sampleTile:BitmapData;
var _arrayLenght:int = _tileClipArray.length;
for(var i:int = 0; i < _arrayLenght; ++i){

[code].....

View 1 Replies

ActionScript 3.0 :: Drawing Object In Rotated Container To BitmapData?

Feb 6, 2011

I have the following display hierarchy:- - container- - - objectI need to draw 'object' to a BitmapData instance which matches object.getBounds(stage) rectangle area. So the first part is easy:

ActionScript Code:
var rect:Rectangle = object.getBounds(stage);
var bmp:BitmapData = new BitmapData(rect.width, rect.height, true, 0x00000000);

[code]......

View 2 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved