Changing Centre Of Rotation
I purchased Flash yesterday, and so am starting with very simple animations. One way I thought of doing this was to rotate limbs in different keyframes to give the impression of movement. Unfortunately, the centre of rotation makes this impossible. Is there a way to change the cente of rotation, or am I doing it wrong?
FlashKit > Flash Help > Flash Newbies
Posted on: 09-02-2002, 12:40 PM
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3d: Rotation Around A Centre
Dear Kirupeans,
Im trying to make objects rotate around a centre in as3 but it turns out to be harder then i thought. Does anyone has accomplished something lke this in as3 already without using Papervision3d or other premade engines? I'm trying to make something like this, well something exactly like that -> http://www.kirupa.com/developer/acti...ion_center.htm
Any help would be really appreciated!
Greggeh
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[as] Centre Of Rotation
This should be a simple one but so am I today
I'm creating a tank game (very early stages) and am designing the basic tank.
the tank in split into 3 mc's treads, base and turret, the problem I'm having is with the rotation of the turret. I'm using the basic code of
ActionScript Code:
on (press) {
myTank.myTurret.onEnterFrame = function() {
this._rotation += 5;
};
}
on (release) {
delete myTank.myTurret.onEnterFrame;
}
how do I set the centre of rotation?
If I was doing it as a motion tween I could do it manully using the free transform tool but if it is scripted it doesn't take any notice of the point of rotation, the answer must be obvious but I can't see it
Zen
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Hi, I'm a bit of a newbie at using actionscript so sorry if this is an obvious question. I'm trying to create a scalable, panable map (http://uploader.polorix.net//files/290/mapexp1.swf).
The only problem is that the zoom in / out function zooms from the centre of the map image, rather than the centre of the screen. This makes it very hard to zoom in to a particular point in the map. Take a look at the swf - see what I mean?
Any suggestions on how I could fix this would be great.
Cheers! Tom
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When I change the dosument size in the document properties window it simple cuts the page back to left of the document (or expands it from the left of the document depending on wether I make it smaller pr larger..)
Can anyone help? It would save me a huge amount of work.
I'm using Flash MX on a mac runing OS 10.3.
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I need help with this little lilyPad thing that I just made. What it does is move in the direction that it is rotated to, using trig. The link to the movie, and the source code is:
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So I created a graphic symbol called "laserbeam" that is nothing more than a line. I have placed that in a movie clip called "laserflash" I have inserted that movie clip into another movie clip called "laserpulse".
What I want is the tip of the line to follow along the path while the rotation and the opacity change quickly to give the appearance of the beam flickering, and coming from a variety of directions.
I am trying to script the animation (not the motion tween around the path, just the flickering. I was trying to generate 2 random numbers, one to use as teh _alpha value, and one to use as the _rotate value, except nothing happens.
I am great with graphics, horrible with programming. Is there someone out there who can figure out the AS for doing this, or at least clue me in to the right method.
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Is it possible to change the point of rotation via actionscript?
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Is it possible to change the rotation point?
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Hi everyone- now that ive gotten pretty damn good at the art/animation/design side of flash im trying to get into more sophisticated actionscript.
I have a "ball" (actually a camera lense but you get the idea), its placed on stage and rolls with an "Ease in" across the screen via actionscript alone. When it hits a certain _x point it does a bounce.
Problem: i want the ball (or lense) to rotate (or roll) in proportion to the speed its moving across _x axis (it changes/accelerates due to easing). Now the cheese way of doing this is to just set the rotation as a constant value and test it until it looks right.
but i want to have the rate of rotation change (increase or decrease) dynamicaly with the speed of the lense.. in other words, how would i get the _rotation variable to change with speed?
any help would be great.. im a noooooob
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Sorry if this can be found somewhere in here already but I'm not really sure what keyword to search for... Anyway, problem is as follows:
I'd like to rotate a MC around a point that is decided by a variable in the actionscript. That is, I'd like to find a way of moving the MCs "center of rotation" at runtime.
Hope I'm making sence... To illustrate, the movie will be of a ship that lies deeper in the water depending on its weight and it will look funny if the center of rotation (is that even what its called?) isn't in level with the water.
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I have tried the following
Quote:
on (release) {
rotation_speed = 0.1;
if (speedo._rotation > -40)
{
do {
rotation_speed = rotation_speed * 1.1;
speedo._rotation = speedo._rotation - rotation_speed;
} while (speedo._rotation > -40);
}
else {
do {
rotation_speed = rotation_speed * 1.1;
speedo._rotation = speedo._rotation + rotation_speed;
} while (speedo._rotation < -40);
}
}
I want to get the needle round to -40, so whilst it is greater rotate is backwards, otherwise rotate forwards, starting with a small rotation and increasing (accelerate).
I found that this was still jumpy. Trying a negative causes Flash warning about script running for too long.
Rotating forwards (else) also overshoots the end position of -40
Any ideas on how to get the needle moving smoothly and finishing on the correct spot??
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http://www.jr247.co.uk
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Hi,
I have created a presentation for a cd rom. I have made it into an exe file and want it to load an swf file when I click the appropriate button. I have used the LoadMovie command and it loads the swf fine BUT my exe has a fullscreen fscommand at the beginning and when it loads the swf file I need the swf file to appear in the centre of the screen, not just anywhere....how would I do this guys???
regards
swerve123
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How Do I Centre It?
Hi,
I have created a presentation for a cd rom. I have made it into an exe file and want it to load an swf file when I click the appropriate button. I have used the LoadMovie command and it loads the swf fine BUT my exe has a fullscreen fscommand at the beginning and when it loads the swf file I need the swf file to appear in the centre of the screen, not just anywhere....how would I do this guys???
regards
swerve123
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I only want this to happen when the mouse is clicked and over the item.
I've already tried doing this with (mouseMove) and (mouseDown) with an mc,using (_rotate) but it doesn't give the feeling of "dragging it round"
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swills
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thanks in advance
:|
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Anyone pls!!
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on (release) { getURL("javascript:window.open('image1.html','imag e1','width=500,height=500,top=0,left=0,toolbar=no, scrollbars=yes,resizable=no,menubar=no,status=yes, directories=no,location=no'); void(0);");
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dear helper
in flash 5 it was modify - transform - edit centre.
could someone please tell me how to 'edit centre' in MX??
much appreciated
SmokyD
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Of course you could just make a table and centre it that way but then you are unable to keep the movie playing as a percentage as opposed to pixel size.
So, any coding or little tip that can centre my embedded flash movie?
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I remember in Flash 5 you could "Edit Centre" and actully drag the registration point of a movie clip. How do you do this in MX? I am yet to find an answer.
I don't mean dragging the circle in Free Transform, I mean the actual little cross reg point, not the little transform cirlce.
Thanks for any replies,
J
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can i dynamically set the centre point of an externally loaded movie.
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is there any way i can set the pivot point to be in the centre of the clip so that it rotates from the centre.
sorry if i am not using the correct terminology here; kinda new at this.
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Hi guys,
I'm building a portfolio using a movieclip viewer and am having difficulty centering the images once they have loaded using the loadmovie function. I have posted the actionscript below, if anyone has any ideas that would be wicked!
Also, in the thumbnail viewer when the site is opened initially the first thumbnail appears in the centre rather than on the left hand side, does anyone know how to prevent this?
Thanks
Paul
Actionscript below:
function loadXML(loaded) {
if (loaded) {
xmlNode = this.firstChild;
image = [];
description = [];
thumbnails = [];
total = xmlNode.childNodes.length;
for (i=0; i<total; i++) {
image[i] = xmlNode.childNodes[i].childNodes[0].firstChild.nodeValue;
description[i] = xmlNode.childNodes[i].childNodes[1].firstChild.nodeValue;
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thumbnails_fn(i);
}
firstImage();
} else {
content = "file not loaded!";
}
}
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;
xmlData.load("images.xml");
/////////////////////////////////////
listen = new Object();
listen.onKeyDown = function() {
if (Key.getCode() == Key.LEFT) {
prevImage();
} else if (Key.getCode() == Key.RIGHT) {
nextImage();
}
};
Key.addListener(listen);
previous_btn.onRelease = function() {
prevImage();
};
next_btn.onRelease = function() {
nextImage();
};
/////////////////////////////////////
p = 0;
this.onEnterFrame = function() {
filesize = picture.getBytesTotal();
loaded = picture.getBytesLoaded();
preloader._visible = true;
if (loaded != filesize) {
preloader.preload_bar._xscale = 100*loaded/filesize;
} else {
preloader._visible = false;
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picture._alpha += 10;
}
}
};
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if (loaded == filesize) {
picture._alpha = 0;
picture.loadMovie(image[p], 1);
desc_txt.text = description[p];
picture_num();
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}
function prevImage() {
if (p>0) {
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picture._alpha = 0;
picture.loadMovie(image[p], 1);
desc_txt.text = description[p];
picture_num();
}
}
function firstImage() {
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picture._alpha = 0;
picture.loadMovie(image[0], 1);
desc_txt.text = description[0];
picture_num();
}
}
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current_pos = p+1;
pos_txt.text = current_pos+" / "+total;
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// thumbnail code!
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thumbnail_mc._x += scroll_speed;
}
} else {
delete tscroller.onEnterFrame;
}
};
}
function thumbnails_fn(k) {
thumbnail_mc.createEmptyMovieClip("t"+k, thumbnail_mc.getNextHighestDepth());
tlistener = new Object();
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thumbNailScroller();
};
target_mc.onRollOut = function() {
this._alpha = 50;
};
};
image_mcl = new MovieClipLoader();
image_mcl.addListener(tlistener);
image_mcl.loadClip(thumbnails[k], "thumbnail_mc.t"+k);
}
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