what I am trying to do is calculate the position of a point along a curve, what I want to do is create a function where i am able to determine where a point intersects the curve when I provide an X value.I have created a simple diagram to illustrate what I am looking for:So assuming I know the x,y of each black dot, and the x of the red dot, how do I calculate it's y value?
View 2 RepliesI know how to calculate the distance between two movieclips, but I want to know how do you keep a movieclip centered between two movieclips? For example, three movie clips evenly spaced out in a row. I drag either movie clip on the end and the one movie clip in the center positions it self to be in the center x and y wise.
View 9 RepliesI am trying to develop a Quadratic Bezier Curve using the graphics.curveTo() method. Initially when i drag mouse to draw the shape, i use start point and end point of mouse to draw the curve line. I assume control point at any position below or up to the line. An draw the curve using this control point. some what like:-
[Code]...
Now i add a tip on this curve segment. I have x and y position of tip. I want to change the curve segment by dragging tip. but now i don't have the exact control point according to tip position. If i use tip coordinate as control point it reduce the height of curve and now tip does not lie on the curve segment. What i have to do is calculate the exact control point on the basis of tip coordinate. But i failed to get this point.
I want to curve a dynamic text from a straight line to circular curve (using a slider). I have placed the characters of the string in each textfield created at runtime.
View 3 RepliesI was hoping someone could help me working out some advanced data reformatting. What I'm hoping for is a function where I can input a value along with an array of key positions like so:
function remap(percentage:Number, keypoints:Array) { ...
The array would start with the minimum and end with the maximum point, with nested key points along the way. For example, I would input something like remap(0.25, [0:0,80:50,100:100] ) and the function would 'imagine' a spline curve graph from (0,0)-(100,100) with a key point of (80,50), then return the y value that is 25% along that graph.
I am developing a game for mobile in AIR (as3). I have created some bots for this game that initially just wander around. But when a bonus enters the stage, they have to move to the bonus.The detection of a new bonus and moving of the bots works fine, but there is something wrong with the manipulation when a new bonus enters the stage.Basically, this is how it works (or I try to make it work):My bot moves along with his rotation as a parameter. (works fine)
private function moveToNextLocation():void
{
var angle:Number = _rotation * 0.0174532925; // 1 degree = 0.0174532925 radians
var speedX:Number = Math.sin(angle) * _speed;
[code]....
I have a curveTo an anchor point and a control point.Then I have a function that will return the x and y of a point along that curve if I give it a number as a percentage of the curve (0 to 1).It looks like this, and works perfectly..
Code:
function drawOnCurve( interval:Number, x0,y0,x1,y1,x2,y2)
{
interval = Math.max( Math.min( 1, interval ), 0 );[code]....
x0,y0 are the start point, x1,y1 the control point and x2,y2 the final anchor point.But... I want to give it a _y value instead of a percentage (interval) and it return where on the curve that would intersect.
I have thumbs placed on the stage. I create an empty mc to load swf. But my thumbs disappear from the stage when I test the movie ( html or swf) if I settle the _ and _y position of the empty mc.why the emptymovieclip positions affect the positions of my thumbnails?
View 2 RepliesI'm draving a loooong curve and i want to see what is the length of that, how to do that?
View 1 RepliesI've used the countdown AS from Kiruba to list a value of days left until 2008.[code]I want to calculate 1580 - (this.digit * 4) and have a new this.digit value of 1364.
View 4 RepliesI am trying to bend 2 parallel lines into a circle, but with a motion tween, it curves under eachother... (see att)how would I make them curl to a circle
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[code].....
I am using the code attached below to make dynamic text curve.
My question is: How can I invert the curve or arc, while making sure that it still reads the same? up to down.
How can I animate a curve being drawn with as3 drawing api.I am not interested in masking it out or other tricks. I am interested in drawing it whith the api.This would be the equivalent, but only a straight line:
var steps:Number = 30;
var currentStep:Number = 0;
var startPoint:Point = new Point(100,100);
[code]....
I use Loader class to load a picture,such as example.jpg,and I know if I want to realize fade in effect,I can use following code in Event.ENTER_FRAME:sprite.alpha+=0.05.When I run above code,I can get a fade in effect of example.jpg. But the fade in effect is for the whole example.jpg, now I want to fade in the example.jpg with a special curve,such as number 9,the example.jpg fade in along number 9 curve. I guess it shoud have a mathematical model can realize this special fade in effect,anyone could give me the model of fade in along special curve?
View 3 RepliesI try to calculate all the points on a curve.
The curve decided by the width(X on the picture) and height(Y on the picture) properties of a movieclip.The distance between each green point on curve is the same.
posed by some points( an array) with a predefined length( in pixels) from position 0 to X(final) on stage. Now, i modify the points moving on the stage, making new arcs, including the point 0 and x points...So, i need to calculate the length of the new path to make another calcs..
View 9 RepliesI got a curve(e.g. movieclip) which i want my character to go on when i press left/right arrow. How to make that?
View 2 Repliesi have a bezier curve that is generated dynamically now i want to mask an image with it to produce a cut of face functionality just like in [URL]?
View 1 Replieshow to curve a text in runtime?
View 1 RepliesI have a math issue that I have some problems solving.
screen1
screen2
I need to calulate the pixels inside the squares and put them inside an array:
The main square rotates(see screen2) and i have the angle.
Something like attached code.
I have the following values:
- x/y of the main square. ( reference point )
- Width/height of the main square
- Width/height of all the squares
- Angle of main square..
trying to calculate the size of a progress bar.Here is the thing I have a movie with X scenes and I want the progress bar to fill up according to the porcentage of my timeline that has passed.here is the code I'm using
var parcialSeek var completeSeek
this.addEventListener(Event.ENTER_FRAME, tamanhoBarra) function [code]...
with this code every new scene the bar starts again and since I don't have exacts 100 frames on my movie the bar size dosen't match?
As the title says I am looking for a loop sequence to search through my array and find values that are even and then calculate them with a button click. I have this code which is completely wrong:
[Code]....
I'm trying to calculate the distance between two images (A and F - there are other images between A and F) but I can't seem to figure out how to do it the right way. The image A.x is "(stage/2) - (A.width/2)" and image F.x is "E.x - imgSpace" which is a negative value (all the images x is of negative value to image A.x). In my oppinion the calculation is F.x - A.x and although it might be right I still ned the value to be non-negative.
View 3 RepliesCount = "400"/3 - 1;
How to convert the above count to int?
I'm creating a drag based control in Flex / Flash, similar to a film strip, where an individual can swipe horizontally to scroll through the items. To make the control feel a bit more natural I've added some inertia to slow the scrolling once a swipe has taken place. When first loaded up there will be five items in view with 'x' numbers of items to scroll through with the 3rd item centred and selected.
My problem though is that I want, when animating, a swipe gesture to determine whether an item will end up the middle (3rd position) and adjust its movement calculation accordingly so it docks with the 3rd / centre position. Imagine you perform a long swipe, it flys pasts 'x' amount of items, but as it slows to a stop it elegantly stops with an item centred / in the 3rd position. To do this I believe I need to determine the distance to travel just from the speed value (as time is irrelevent to the user experience, i.e. a longer / stronger swipe would justify a longer animation skimming through the items).
At the moment I'm invoking the animation routine (with inertia) in the ENTER_FRAME event when the user generates a MOUSE_UP event. When they do this, I obtain the speed of drag (by monitoring this beforehand) and then decrement this speed value on each call of the ENTER_FRAME event until it reaches an appropriate value to stop the animation.
Unfortunately all the speed calculations I've seen deal with Speed and Time to determine distance, I just need Speed. Admittedly, my knowledge isn't strong in this area so I might be missing the obvious.
I want to create one calculator which will calculate the future cost of education after certain years like 10 or 15 yr. If i take the inflation rate as 10%. How to calculate the future cost.I don't have any idea about it. I want to know the formula to get the output.
View 3 RepliesThis is actually more a math problem, but maybe some of you are better at math and have an idea on how I should be approaching this.
I'm dynamicly creating circles in my actionscript project and what I want now is calculate their x- and y-positions. I want them to be positioned in a circle, with the condition that it shouldn't matter how much circles I dinamicly load. (I'm having a hard time translating my problem to English, so I'll add an image so you instantly see my problem.) Does anybody have an idea on how to calculate this? What kind of formula should I use?
I am wracking my brain over how to figure this out and it is REALLY frustrating me. If we have a cannon on a castle wall that shoots a cannonball from (0,0) toward an enemy that sits below on the ground off to the right at (50,-10) and we want the cannonball to always reach 20 units in the air, how do I make a line function where I can plug x in (which will be 0-50) to calculate y out?
y = -a(x - h)^2 + k
is the equation for this where (h,k) is the vertex. This means k will always be 20. I know to keep 'a' negative because that will give an upside down U parabola. But how do I figure out what 'h' and 'a' are? Systems of equations? How on EARTH would I write a function to do that in Actionscript?
Im using the as3CoreLib JPGEncoder class to save a jpg of my swf from flash.Right now I have the quality of the jpg set to 60 like this:ActionScript Code:var jpgEncoder:JPGEncoder = new JPGEncoder(60);I'm trying to set the quality number to a variable to be defined a function that will calculate the compression value needed to get the jpg to 20k.
View 2 Repliesi am tryIng to ceate a Scrolling message box,
i have created a dynamic text box ( instance name = scrollTextBox var = scrollText )
i use the script -
var textLength= scrollText.length;
to try and obtain the amount of characters / pixel length of the scrollText var / text file
however, regardless of whats contained within the scrollText document i keep getting the textLength return of 20 ?
my code so Far is -
Code: Select all// Load Text and adjust the DynamicText Box size to match the content
loadVariables("scrollText.txt","");
scrollTextBox.autoSize = "left";
[Code]....