is it possible to perform inverse trigonometric function using AS3? Actually , i want to calculate the angle of incidence of ball to the wall then reflect back it to angle of reflect.
Sin i=Sin r
I'm not certain that there's a set answer to that question, so let me give you a more specific example: In my current code, I can solve a problem one of two easy ways: either by using three algebraic functions (one square root and two squares) or by using three trigonometric functions (one atan2, one cos, and one sin). And then I potentially repeat the code for several hundred iterations.
I'm curious if one set of functions is any more efficient than the other, if they're fairly similar, or if there may be a set of higher-order functions I'm missing that can do these kinds of computations much more easily.(For some more specifics, if you're interested: given a line between any two points, I want to find a new point along that line that's a set distance from one of the other two points.)
I was reading about the "bones" tool in Flash CS4, and the IK library that comes with it, but I don't have access to CS4...so I'm wondering if there is a smilar tool and library for CS3 users, who may want to create these effects with Actionscript.
View 1 Repliessay i have 9 children in a xml code.when i read it into AS3 i get 0~8 children.what if i wanted an inversion of this?
ie
xml[0] = xml[8]
1 = 7
2 = 6
etc
so then i could have two versions, xmlA as the regular 0~8, and xmlB is inverted.
I am trying to find where the IKManager is located on my file system, so that I can import it into my project from Flex Builder. Though this class apparently comes standard with CS4, it's nowhere to be found on the filesystem. Can anyone point me in the right direction? Is it in a swc file?
View 1 Repliesi am trying to edit a flash template with flash cs4.the problem is that there are some pictures in there that are hidden ( dont ask how is that possible becoz i dont know). to see this pictures i have to use distribute into layers. as i want to change this photos the problem is that after i change them i dont know how to do the invers of distribute into layers.... and as a result the template doesent work as it has to.
View 1 RepliesI've taken this problem far and wide, and it's a common one, too: Someone wants to use a mask inversely, hiding the masked object instead of revealing it. The only coded solution is to create a bigger "stage" mask with the inverse mask cut out. I understand the process, and have a slight grip on methods of executing it. Too bad it still will not work properly. I have employed two solutions to no avail. There was this simple option, and then there was this slightly harder option.
And where it works for some people, it is not working in my instance. If you look at my files, the masks cut out rather strangely. Is there something different about this situation that requires a different line of code, or am I simply using it wrong? To show you how they worked out, this is the goal: And this is what I ended up with after option 2: Because the object will be squishing and changing shape, creating the mask frame by frame would be a hassle. Changing the shape of a solid mask is a lot easier than moving the particular points of a "stage" mask manually.
I have a var that captures a slider position like this:
Code:
var sliderPosition = Math.round((thumb.y-bounds.top)/(bounds.right-bounds.top)*100);
which outputs a number between 0 and 100 starting on 0. I need to scale an mc from 1 at sliderPosition =0 to .42 at sliderPosition = 100.
I am looking for leads on an Open Source IK library for AS3.
My project involves simple 2D limbs with shoulder/elbow/wrist joints.
If I am unable to find anything I am going to try and write one, although my math is not anywhere near up to the task.
I'm wondering if there are any nice ways of inversing a black and white / monochrome bitmapdata in AS3 which don't involve going through and setting each pixel by pixel?
View 2 RepliesFor a site im working on I want an object to move thats hanging on a piece of wire made with the bone tool to move when my mouse is moved towards it so it would swing when the mouse is placed near.I thought using a simple code to move the movieclip attached to the bone would work but it just moves the movie clip and forgets about the kinematics. this is the code i used:
ActionScript Code:
stage.addEventListener(Event.ENTER_FRAME,followmouse);
function followmouse(event:Event):void {
var dx:int = box.x - mouseX;
[code]....
If you click the scroller in this .fla I've attached the text jumps away at first. The jump increases when you increase the [x]*dydrag function in value. I want the text to follow the inverse motion of the scroller very smoothly.
View 1 RepliesI've managed to create a flock with an eagle chasing it around using some available code. How to create an inverse kinematic tail for the predator class like a line of eagles chasing the flock. I've uploaded my code in a zip file.
View 0 RepliesHas anyone here ever developed a function (or general library of relevant functions) that will allow one to find the inverse of a matrix? I've searched the forum archives, as well as the internet more generally, but haven't found anything. If anyone has some leads, I hope you'll pass them along.
If I don't hear anything within the next few days, I might try to develop something on my own, but I'd hate to do so if someone has already done the dirty work.
A solution to this problem would be very useful for 3-D work or anyone doing mathematical programming more generally.
I've got a Vector of ViewToActionMap objects, which have following constructor:
public function ViewToActionMap(_forModule:eModule,
_forAction:eViewAction,
_toFunction:Function,
[code].....
I'm trying to get this one function to be able to call many functions (not at once, but call many possible ones)In other words, I'm trying to get this variable to be named as a function. That way, this one variable can create multiple functions.example:
actionscript Code:
class Thing extends MovieClip{ var funcvar; var othervar; function onLoad() funcvar = "YYY"; othervar = "ZZZ"; function onEnterFrame()
[code].....
is it possible to write a function to move an object and then call that function on a clip event for instance
function (bounce){
script;
script;
}
and then call it by saying
on(mouseOver){
this.bounce;
}
is it possible to store a list of params needed for a function in an array and then use that in a funciton call?
[Code]...
or something like that?? Prob have to iterate the array but how do i get the params into the function call? Is this even possible?
How do I execute callback functions dynamically by passing a function in as an argument to another function?
Look at this example:
Code:
package {
public class myClass extends MovieClip {
public function myClass(callback) {
[code]....
I have a set of Cue Points in an FLV I'm playing. It's an interactive quiz, so the idea is that flash will change a variable, theAnswer, to a different letter depending on which question it is. The answer to question 1 is B, question 2 is D, etc. Either the cue point event listener isn't working, or else it is working and Flash isn't declaring the variables. 1120: Access of undefined property theAnswer. I literally can't find a single problem with my code. I have an almost identical Event Listener further down which works.
[Code]...
I need to return to my original function after capturing an event (downloading something) with another function. The original function needs to return a value, which depends on the downloaded data. So, I'd like to pause original function for the time needed for the download and the eventhandler function to complete it's work, and resume it afterwards.
The obvious way is to set a flag value (both the original function and the eventhandler are within the same class) and make the original function check it until the eventhandler function changes the flag. But that would be wasteful, and my AS is slow enough already:) [other parts of the application utilise some heavy graphics]. Is there another way? Like an event that gets captured "in the middle" of the function? Or some other form of flow control?
Let's say I have a Custom Event Class, and it has several Event types stored in static Constant:
[Code]...
Is there an easy way to validate that the type passed to the Constructor is one of the Static Constants of the Class, without having to check it against each value?
is it possible to declare function this way
ActionScript Code:
function startShake(e:MouseEvent, num1, num2):void
what i mean is it possible to send to the function not only en event but also a variable and a second question how can i access
ActionScript Code:
function stopShake(e:MouseEvent):Array
this array that function return.
How create baseurl function in flash and how i call that function in button script
View 1 RepliesI have this code but I cannot work out how to fill in function parameters based on an array and it's length, see line 7
[AS]
import com.robertpenner.easing.Cubic;
MovieClip.prototype.framesTimeout = function(func:Function, frames:Number, args:Array) {
[code]....
Is it possible to call a function and fill in the parameters based on an array and it's length?
is there a way to refer to all movie clips on the stage or apply a function to all movie clips without applying the function to all manually?
View 3 RepliesUse Flash CS5 (and AIR, though this does not seem like it would be AIR related) in Win XP 64 I have a MovieClip symbol in my library with the identifier 'Puzzle10Piece10' with the following actionscript attached to frame 1 of the only layer with the following actionscript:
[Code]...
This runs contrary to my understanding of the pre-compiler and code execution order. In my way of thinking, any reference creation and related memory allocation is made when the object is instantiated, and indeed that allocation, unlike C depends not on code order (declaration before use), though this is an order that would satisfy even the C pre-compiler. If I understand the Flash compiler at all, it's not even a question of 'code order'... the symbol is pre-compiled such that for it to exist... for it to be instantiated, the variable would exist before the function would even be 'available' to be called internally or externally. Is my thinking way off, or is this a bug?
I have an AS3 program that calls a function multiple times. The function must return multiple variables, so I created a class for the function to declare an object containing all of these variables. For example, here's my class:
package
{
public class PER
{
[Code].....
Let's say the calling program calls the function, which returns the variables into data_set1 (where data_set1 depends on input variables arg1, arg2, arg3) using:
var data_set1:PER = function_name(arg1, arg2, arg3);
The calling program does some stuff, then calls the function again, but returns the variables into a new variable name, data_set2:
var data_set2:PER = function_name(arg4, arg5, arg6);
My intention is that data_set1 and data_set2 are different (e.g. not linked together).
My question is, given that arrays are passed by reference, will data_set1 be modified to agree with data_set2 upon the 2nd function call? Why or why not?
I'm doing a basic site with frame labels on the main timeline whose name corresponds to the btn names. A simple otoAndPlay(evt.target.name); I have a basic navigation setup of 7 mcs with mouse eventlisteners for CLICK, ROLL_OVER and ROLL_OUT.
Example:
prepare.addEventListener(MouseEvent.CLICK, navigate);plans.addEventListener(MouseEvent.CLICK, navigate);retire.addEventListener(MouseEvent.CLICK,
[Code]....
Does anyone know a better way to do this so when my mcs are clicked they display the rollover content/art? In essence I'm trying to achieve that when the user clicks a btn it goes to that "page" and the corresponding btn stays highlighted. Pretty standard web navigation technique but I just don't know what the best way to do this in flash is and with how my site is setup.
I'm using this code to call a actionscript 3 function through javascript
[URL}
and I want to call the acrionscript 3 function from a javascript function, but not on a button action.
actionscript code:
//call to javascript
ExternalInterface.call("sendToJavaScript");
//call from javascript
[Code]....