ActionScript 2.0 :: Setting The Rotation Point?
Oct 26, 2004
i'm working on a flash game at the moment, and i would like to know if i am able to set the point that the movieclip rotates around using actionscript.
i don't want to do it by simply moving all of the contents of the movieclip closer or nearer. is there any other way of doing it? i couldn't find any simple functions for it. am i just going to have to use some complicated maths?
[edit] rotation point, aka, registration point.[/edit]
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Jul 15, 2011
i have the follow issue :
I have a point which is setted at the border on a component, with changed transform point to the center of a component in order to match the component rotation.
the important part is when i try to get the point XY after rotation - they remains the same as before rotation.
how to get XY, after rotation ( changeing point.rotation property to specific degrees of rotaion )
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Jul 13, 2009
Flash knows where the anchor point is in 3D space in order for the symbol to rotate around it, but I can't seem to figure out how to see the coordinates of the anchor point or type in new ones. Please tell me how to do this. I am already very annoyed that Lynda, a pay service, doesn't think this is vital information. Apparently they think we would never want to do anything more visually stimulating than one simple spinning logo! But I digress...
Just to be clear, I know how to move the anchor point visually on the stage, but I want accuracy. I want to be able to give two symbols the exact same coordinates to rotate around.
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Nov 9, 2009
Im using A
Code:
function enterFrameHandler(event:Event):void
{
[code]........
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Jul 9, 2010
I am new in action script 3... i am not able to rotate movie clip from center point(movile clip is a containear holding many clips).
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Jan 6, 2012
I have encountered a need to build what amount to classic boardgame spinner.
1. When you click on the spinner it spins clockwise
2. There are several places where it can stop.
When the user clicks the spinner I run a method to determine where (what target) it should stop on.
How can I make the spinner spin a few times, decrease in speed (ease) then stop at a certain angle?
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Nov 14, 2007
I am making a 'simple' template builder in flash which allows the user to add/remove text boxes and images to the stage.
I can rotate any of the movieClips fine but it rotates from the top left and i want it to rotate from midpoint. Is there a way to set the midpoint/rotation point using actionscript?
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Jan 30, 2011
I have the following problem. I have an MovieClip in a holder MC. I would like to turn the inner MC X with 'rotation' parameter, and still keep it in the holder mc to the right and bottom of the holder MC reference point. So after turning it should look like thatanyone can tell me how to do that? Basically a function that takes any X rotated in any degrees through X.rotation = ... and puts it back in place in the holder MC.
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Apr 18, 2011
Has anyone got a bit of code I can use to change the center point DisplayObjects rotate around in a 3D space? I need it to work with rotationX, rotationY and rotationZ. I know theres a workaround of wrapping every object in aother sprite and offsetting the x & y positions but I'd much prefer a math solution. As an example of the problem, this code should make a star shape:
[Code]...
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Feb 4, 2008
I'm attempting to write a racing game. I've loaded in my image, I brought it to the stage and now, all I want to do is rotate it from its' center and not upper left corner.
The code:
racer.rotation += 5;
rotates from the upper left corner. How do I rotate from the center of the car/sprite? I've tried putting it into a container but I'm unsure on the coordinates of the container because I tried to set the x,y coordinates to half the sprite image but y'know, it's not doing what I expect it to.
ActionScript Code:
if (arrowLeft) {
var container:Sprite = new Sprite();
[Code]....
I will never sneer at another racing game! I didn't think it would be this hard to do a simple rotate of an image!
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Sep 11, 2008
I am rotating some objects which their rotation (pivot) point is not at the center. My aim is to rotate from the center of the shape. How can I overcome this?
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Sep 24, 2010
greetings, first of all sorry for my english. This question will probably looks more difficult than it is.
I have movieclip which I want to rotate around internal point few angles with click on certain button, and I manage to do it, but I want to see motion, or even put ease not only to immediately pop up in the place.
Code:
import flash.geom.Matrix;
import fl.motion.*;
[Code]...
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Nov 11, 2010
I am creating a a small site with a spinning menu but I want it to spin only in onedirection ( clockwise) and around the centre of the 3 point cross I am using as a menu.I have this currently to rotate the menu but I want it to only rotate on way and around centre.
Code:
content_mc.draw_btn.addEventListener(MouseEvent.CLICK,drawClick);
function drawClick(e:MouseEvent):void{
[code]....
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Oct 31, 2003
I want to have arm movement such as the forearm rotating about the arm where the elbow should be the problem is the registration point is at the shoulder for arm. I want the forearms registration to be constantly equal to a simulated registration point where the elbow should be as the arms registration point would be at the shoulder. I need to do it without nesting (a movieclip within another) is it possible. I tried using a constant distant between the two clips but it doesn't work. Don't know I have to use trigonometry or not
I think in brief what I trying to accomplish is
onEnterFrame=function(){
arm._x=shoulder._x
arm._y=shoulder._y
arm._x=simulated_x (where elbow would be)
arm._y=simulated_y (where elbow would be)
}
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Mar 18, 2012
Hi everyone. This should be a simple question. Using flash professional CS5
I'm manually setting up stuff on the stage (authortime). And i've placed an object at a specific rotation. I now want to place another object, with the exact same rotation.
The problem is, i cannot find any way to read the object's rotation, or to specifically set it (ie: by typing in a value, rather than by manipulating editor handles)
I'm looking in the properties window and there's readouts/settings for position, size, scale, a ton of 3D properties, color effect properties, display properties, and filters. But there's no field for rotation. why the hell not! Isn't that a ridiculously simple and stupid omission?
so far the best method i can find is using free transform, and adjusting it manually til it "looks right", which is a very un-exact way of doing things.
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Nov 13, 2011
I am trying to rotate a symbol about the y-axis, 45 degrees one direction, then back to center, then 45 degrees the other direction. Seems like a relatively simple task, except here is what happens.
Here is the object with no rotation:
Here is the object rotated exactly 45 degrees:
And here is the object rotated exactly -45 degrees:
I need the object to rotate the same as it did the first time but in reverse, otherwise "45" and "-45" are generally worthless numbers to refer to. Is it something to do with the pivot point? I made sure the registration point was in the center when I created the symbol. It doesn't seem to be pivoting the object around the center though. How do I rotate about the y-axis using a pivot point that is actually in the center and gives the same (but opposite) effect when rotating it one way versus the other?
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Jan 15, 2009
I have a project on the go which has a compass that I would like to have move randomly around a fixed central point (giving the idea of changing direction).Would anyone be able to help me out with the coding to get this to work?
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Jun 14, 2011
I draw a shape,like follows:
var shape1:Shape;
shape1=draw();
addChild(shape1);
shape1.rotation=50;
[Code]....
Then I want to rotate the shape at it's center point(200,202) by using shape1.rotation=50,but I find the shape don't rotate at the the center of it's shape. How to realize the function which make shape rotate at its center point?
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May 22, 2011
I'm trying to convert a Sprite that I have into BitmapData so I can perform some collision detection. There are a few things about the way the Sprites are used that is making this more difficult than I expected:
The Sprite itself is a container which holds another Sprite that actually has a box drawn in it. The inner Sprite is positioned negative half its width & height so that it can be rotated from the center via the container. The container may be rotated at any angle at any given time
So my approach thus far has been attempting to draw the outer Sprite onto a new BitmapData object with a Matrix to account for the difference. Whilst I can use a Matrix to make this work for one particular rotation angle, I cannot find a way to make it work for any rotation.
Here's what I'm doing to draw onto the new BitmapData:
var p:Product = getProduct(); // Product is the container with the inner sprite
var bounds:Rectangle = p.getBounds(stage);
var bd:BitmapData = new BitmapData(bounds.width, bounds.height, true, 0x00FFFFFF);
[Code]....
Translating by the same amount as the previous example will no longer work here, and the box will still be cut off. I've looked around at some solutions posted before or suggestions from other people but they don't seem to work for me due to my container Sprite and rotation.
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Sep 27, 2011
As in the figure i have three lines out of which line1 and line2 are fixed. line3 is derived from line1 based on some angle say 70.I try to rotate the line3 but it deviate from the point x1 and x2. I try the code like this
[Code]...
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Oct 28, 2010
I'm trying to set the rotation of an object via an input textbox for debugging purposes. Currently I have the object working when it changes rotation automatically. A variable is reset every few seconds to a random number between -180 and +180 and then the rotation of the object changes to match the variable. However different things are meant to happen when the rotation variable is set at varying degrees so I rehashed the code so that instead of being a random number it responds to the variable in an input textbox.
Now... I set up the input textbox with the variable, and a dynamic textbox to show me the rotation set for the object. however every time I enter a variable in the input textbox the set-rotation changes to "Undefined". Am I supposed to add some kind of a "Submit entered number" button somehow. In the past when I have used input textboxes the number is processed automatically.
E.g.. dynamic textbox is 5*variable.
Enter #number. As you type input- the number appears inside the dynamic textbox
I even added a longer delay. The number in the dynamic textbox IS CHANGED with no resulting change in the rotation of the object. As the time countdown loop comes to a close (After every 9 seconds set rotation to input box) the text instantly changes to "Undefined".
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Feb 2, 2012
how I can count the B point's coordinates (see attached image... or not as I am a new user...pf!). I know the arrow's rotation - so the angle (let's say it is -120), A's coordinates (0, 0) - A is the middle point of the arrow, and that the distance between A and B is 50 px.
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Sep 25, 2007
How do you change the registration point of a TextField or MovieClip?Suppose you want to Twin a zoom in, I need it to happen from the middle, but I found no methods or properties that let you set it in the center.
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Mar 7, 2009
I am creating an interface where a user can pick up "Polaroid" stle photos and shuffle them around a virtual desktop. I want to photo to shift it's transform point to match the point at which the user picked up the photo, to create a "swinging" effect as the photo is dragged.there was an AS2 workaround floating around, but I want to find the AS3 equivalent, and seem to be unable to find it in the Geom/Matrix package/classes.
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Aug 24, 2008
when you create an empty movie clip, the registration point is 0,0 as default, I read you can change this by defining the X&Y but my movie Clip's position is defined by stage width and height.Is there another way to define the registration point~?
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Feb 12, 2010
I've been playing around with Flash's native 3D in pure AS3 (in FlashDevelop, not the Flash IDE) and am having a heck of a time finding documentation on how to set the 3D "anchor point". (Perhaps it goes by a different name?)
Can anyone tell me the API, Class, or command(s) needed to move the anchor for a given Sprite or Stage?
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Mar 29, 2012
I am generating sprites programatically like this:
this.food = new Sprite();
this.food.graphics.beginFill(0xFFFFFF);
this.food.graphics.drawRect(0, 0, 10, 10);
this.food.filters = [new GlowFilter(0xFF6699, .80, 5, 5, 2, 2, false, false)];
this.food.graphics.endFill();
[Code]...
I basically want the food sprite to spin slowly about its center, not its x and y value which is the top left corner of the sprite. How can I make the anchor the center of the sprite?
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Oct 15, 2006
I have this code for creating a border around images. (partly from the huge thread on resizeBorder here at Kirupa). The image is loading into a containerMC and that I can align top left, but this code I dont know how to align? Anyone?
Code:
//creating the border:
this.createEmptyMovieClip('border', 3);
with (_root.border) {
[code]....
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Mar 14, 2010
how to properly change a displayobject's registration point? changing the transform.matrix.ty / transform.matrix.tx, works, as long as the mc doesnt change x /y itself later. if it does, the matrix is reset.
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May 11, 2009
I want to make an editor like this site. [URL] If you browse this link you will find "Button. If you press this button you will navigate to a editor to design your layout. After draw a rectangle or circle or line you can resize that or can rotate that. When you finish if press the "you will back to the previous page where your desinged layout display. If you press the "" again then you will navigate the editor with the previously designed layout. I want to make a site like this. I want to use the flash cs4 to make the editor. Anybody knows how to draw a rectangle or circle shape with mouse and how to scale by setting the point and how to rotate by setting the rotation point also by using flash cs4 and as3?.
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