ActionScript 3.0 :: Lining Up 3D Rotated Objects Mathematically
Jan 4, 2010
Is there a simple way to take a few square images and set rotationY for each one to be the same degrees, then using an equation line each clip up after the previous one? For some reason the width property of the rotated clips is not lining them up correctly for me. I managed to get the desired result by trial and error (see below), but really need to get an equation for this so I can move the clips around with little hassle.
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Oct 12, 2009
i need to check if a point is within a rotated rectangle. I have to do this mathematically, as none of the objects are on the stage so i can't use hitTestPoint. I know the position and rotation of the rectangle, and if necessary can get the four corners as points as well.
I kind of feel silly asking this, because i am pretty sure it's not a hard thing to do, i just can't work it out and so far any google searches just bring up hitTestPoint.
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Oct 14, 2006
I'm writing a general physics engine and I've come across the problem I've always had with flash. So far all my hittests in my physics engine have been calculated by using x/y coordinates and the 2 objects dimensions. This has worked fine for the objects so far because they have been very square-ish and do not rotated. How ever now I am trying to detect if 2 rotated objects are hitting. How can I do this ? I would really like to avoid using any .hitTest() functions.
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Mar 17, 2010
This is unfortunately a quite complex issue to explain, so please don't get discouraged by the wall of text - it's there for a reason. i'm working on a transformation manager for flash, written with Actionscript 3. Users can place objects on the screen, for example a rectangle.
This rectangle can then be selected and transformed: move, scale or rotate. Because flash by default rotates around the top left point of the object, and I want it to rotate around the center, I created a wrapper setup for each display object (eg. a rectangle).
[Code]...
Now, to the question: should I use a different kind of setup, system or structure? Should I maybe use matrixes, if so, how would you keep a static width/height after rotation? Or how do I fix my current wrapper system for scaling after rotation?
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Jun 6, 2006
i have a mc that has 3 text fields category, name, amount and they are being loaded by xml. but when the movie is loaded it loads the mcs inline but i only want them to show 5 in each line. but when its a different category to go to the next line. so for ex.
1 1 1 1 1 - ROW 1
-------------------
2 2 2 - ROW 2[code]....
the numbers = a category so there are 5 (if there happens to be a total of 5) in each row but when the category changes it goes to a different row.
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Mar 14, 2004
However, when i put the destination for my movieclip into the actionscript[code]...
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Jun 15, 2009
Not sure if there's a fix for this or not. I've had this happen to me on the last two sites I've built. I embed the flash movie into my site in Dreamweaver, and everything works perfectly in Safari. When I view the site in Firefox however, the flash movie loads a few pixels off (see pics). Anyone have a fix for this?I've tried setting the vertical align of the movie to "bottom," and I've also tried dragging all of the cells tight in the site. I've even tried rebuilding the site all together. As soon as I bring in the flash, the cells get off in FirefoxSite in Safari:
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May 26, 2010
take a look at this link [URL]. Notice that the flash file in the middle window is off-centered (hanging to the bottom right corner a bit). Any thoughs on why this is? The swf file is fine when I open it seperately and locally, but looks goofy when I throw it in the page.
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Jun 17, 2009
I am trying to organize a series of images horizontally on my site. All the tutorials I find about image galleries utilize image thumbnails of the same width. I want to be able to use images of varying widths but cannot figure out how the ActionScript should be set up to handle this.[code]
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Apr 13, 2012
I am looking to create something like [URL]
Basically a video that allows you to click on products and pull up more info on them as they appear in the video.
The video I will be using is 3 mins long with 10 products you can click on, so I guess I will need to progressively download it. If I could embed it in the timeline it would be a piece of cake. I would just have buttons motion tweened moving with the products in the timeline. But the file size will be too large to make this a sensible option.
My question is, I understand cue points can be used to activate actions for progressive video downloads, but how would I track the buttons over the products using progressive downloading when I can't see the video in the flash timeline?
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Feb 6, 2010
I am facing a curious issue. Generally when we draw lines in Flash either vertically or horizontally or through exact 45 degrees on either of the sides, they come out as straight and anti-aliased. While if they are drawn deviated from either 0 or 45 degrees, they come out as jagged. I want that to be anti-aliased too
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Nov 16, 2010
When I select the text tool in Flash and click on screen to type, my text box is default rotated 90Ė clockwise. In addition, the text is default bottom aligned so when you hit return, the next line is above the first line. So, simply rotating it back doesn't
Even my properties box align buttons are rotated: I should add that the little rotation button you see for "orientation" is not the fix- it rotates individual letters.I can't find anything in the menus, toolbars or preferences to change this...
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Aug 17, 2010
this math isn't working well. I'm using it for a rotated drag and drop (of a tone arm on a vinyl, a kind of abstract turntable simulation). Right now it just moves a bit in the middle of the vinyl (values between 21 and 36, is this degree or what unit is this?), but it should move between the two edges. The problem is that I don't know enough about trigonometry functions. Therefore I can't optimize the math for envisaged behaviour. Does anybody have an idea/tip how I can get a bit more control on the math and its effect? (maybe with more trace functions)
[Code]...
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Oct 31, 2009
I have created a simple text scroll ( on (release) {object.scroll += 1} and it works fine.
Now the image in the background is slightly tilted so I have to rotate the text box a bit and I do this the text disappeares.
Any Idea how to get that rotated text box visible when rotated?
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Oct 7, 2011
I am currently making a game based on slicing other objects, basiclly when you hold down and drag your mouse and then release it an object that shows the cut will be created.
//Sliceline.as
package
{
import flash.display.Bitmap;
[code]....
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Oct 12, 2011
Is there a way to know if user's camera is 180° rotated ?
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Aug 21, 2009
I have made an application where you can design your own greeting cards. I use matrices to scale and rotate images, and I always need to know what scale the image has.
It works when the image isn't rotated, by taking the value from matrix.a or .d which are the scaleX and scaleY values. But when I rotate the image, using the matrix.rotate() function, the a and d values no longer corresponds to the scale of the image.
How can I get/calculate the scale value of an object that is rotated? And I don't want to scale the image by using the scaleX and scaleY methods.
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May 5, 2010
I need to rotate the imageClip,then zoom in,then i need to scroll the imageClip fully.ve the tutorial for thisboth horizontal and vertical scroll for Rotated imageClip..
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Aug 5, 2010
I'm using following code:
ActionScript Code:
var bd:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight);
bd.draw(stage, null, null, null, new Rectangle(tmpX - (tmpW/2), tmpY - (tmpH/2), tmpW,
[code]....
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Jan 20, 2009
Suppose I have a Sprite (A) that is constanly being rotated (as often as the mouse moves).
I have another Sprite (B) that is a child of (A). It makes sense that B is a Child of A because I want B's position to be relative to A's position, and I want B to become invisible when A goes invisible, etc.
However, I would like B NOT to rotate when A rotates. Is there a way to omit B from rotating when A rotates, even though B is A's child?
I know I could do something like B.rotation = - A.rotation everytime A gets rotated, but that feels like a clunky hack to me... there must be a better way?
Currently I'm considering making B a separate object, and not a child of A. But thats not much better because then I have to keep B updated with A's position and visibility, etc...
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Dec 10, 2010
Quick question which is giving me difficulty, but I'm probably missing something...
How would I create a bounding box for any graphic, which can accommodate the graphic while bring rotated?
Simply making a square with the maximum of width or height doesn't cut it... think for example holding a T..
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Apr 13, 2011
I am using Senocular transform tool and I have an object on the stage which I can rotate freely using the mouse. What I want to do is "capture" the total degrees I am rotating the object and write in a a text box. For example, if I will rotate the object clockwise 3 times, the text box will show 1080 (360 * 3), if I will rotate the object counter clockwise 1.5 times the text box will show -540 (360 * -1.5).
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Dec 16, 2009
Say I've got a box that is 218 by 86. If I rotate it to 50 degrees then the width and height are reported as 206 by 222.3. I'm trying to take those rotated values back to the original values and I'm having a bad math day and can't figure it out.
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Oct 17, 2011
I managed to have a working sample using the Gyroscope native extension. I followed these steps:
1) Downloaded the extension
2) Added the ANE file to the library path into Flash Professional CS 5.5
3) Coded as shown in the extensions documentation
4) Exported the SWF file
5) Compiled the SWF and extension using ADT
I worked perfectly. I had a 3D cube rotated using the gyroscope data. Well, not exactly perfecty because after some time app seems to have lost right direction. But I read this is normal and that you need to use Accelerator to balance this. I'm not worried about this though right now.
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Jan 28, 2010
I have a container with masked bitmap in it. The scale and rotation of this container changes at runtime, and I need to draw the masked bitmap but cannot figure out the appropriate matrix calculations to do so.My code works correctly to reflect position, scale, offset for centering without rotation. When rotated, the angle is correct but the positioning is incorrect - I believe because the dimensions change when the rectangle is rotated.how to compensate for this in the positioning - here is some code:
// Adjust the transformation matrix to account for the position of the container
var tMatrix:Matrix = _imgContainer.transform.matrix;
//Offset for container
[code].....
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Aug 5, 2010
I have a couple of images, representing tents, that look like this: The red and blue parts on each side of the tents are doorways, and several tents can be connected together via these doorways. For example, I want to connect the two blue doorways so that they match up like in this picture: If the first tent is stationary, around which point do I rotate the second tent and how do I calculate where to place it?
Currently, I have the upper left corner of each doorway as an x and a y value, together with the width and direction (in degrees) of the door. I'm treating the doorways as one dimensional, so they don't have heights. Would another representation suit this better? Perhaps a start point and an end point plus direction?
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Sep 16, 2010
When rotating a bitmap with actionscript, the edges are jagged and not properly anti-aliased. How do you force anti-aliasing of the bitmap ?
this.stage.quality = StageQuality.BEST; // Tried this, but seems useless
var imgFromLib = new imgFromLib ();
imgFromLib.rotation = 30;
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Mar 9, 2011
I am using the following to rotate a textfield from its top right corner, I would like to know the best way to find the point of the top right corner.
[Code]....
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May 25, 2011
this is the code for 3d rotation [code]i want to rotate the image after dropping them in the canvas.i am able to rotate them in the panel.
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Feb 14, 2010
What does work : I want to put a dynamic textfield on my stage.Then i change the content of this field with AS3.But : when I rate the textfield on my stage, the text disappears.And I have embedded my font (also 'Export for actionscript')...I prefer not to put any textfields on the stage using ASSo the only code I use is : ActionScript Code:this.trial.text = "this is a test";
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