wat's the difference between finding a angle using Math.atan2(y,x) function and by finding using the movie clip's rotation (mc._rotation*Math.PI/180);
View 9 RepliesSo let's begin. I want to build a wheel which you can spin, similar to a roulette wheel. You can do this both ways (CW and CCW, this issue causing the bug, actually). The wheel has some acceleration to it too, and I achieve this by measuring the start and final angle of the drag movement, using Math.atan2(dy, dx). The problem is the following: atan2 outputs the following angle scheme, assuming the point relative to which the math is done is in the center of the circle.
atan2 returns a value measured in radians, so I'm using the classic angle*180/Math.PI formula. I've changed this original scheme into the following, using some simple math to shift the angles a bit, to resemble more accurate circle angles (going up to 360 degrees) The problem that I'm facing at the moment is should the user decide he wants to swipe clockwise, and moves through the right point, where 0 turns into 360 or 180 turns into -180, the whole angle difference thing is capsized. It registers a CCW movement (as if the user swiped his mouse all around the circle). So, I'm looking for some ideas as to how I can work around this small issue.
I've got a movieclip which follows a predefined path (like in those tower defense games). Normally the mc changes the direction it faces with Math.atan2 method and then rotates the movieclip, but because this game is in a tilted view( in stead of directly from the top) I need it to change the frame in the MC according to the direction it's facing.
Is it possible to read out Math.atan2 method data, and then change the frame the MC is displaying, according to this data? I used [URl]...on-and-realism as a base for this game. If Math.atan2 method
Code:
function rtd (rad) {
return rad*(180/Math.PI)
}
trace(rtd(Math.atan2(0,10))) //supposed to be 90 degrees but it return 0
trace(rtd(Math.atan2(-10,0))) // supposed to be 180 but it also return 0
what to do?
I create a line first by clicking first and a second point. Then I create a second line by clicking on the second point of the first line and second click somewhere else. Now can I find the angle between those two lines?
View 2 RepliesI have an object that moves to wherever the mouse is clicked, I need to be able to determine the angle at which it is moving like so
[Code]....
Wat's the difference between to find angles of two points which is (x1,x2) and the other point be (_xmouse,_ymouse).
To find the angles we subtract from one point to the other
like
method 1:
target x = (_xmouse - mc._x)
target y= (_ymouse - mc._y)
[Code].....
Basically I have two movie clips. I know the x diff and the y diff, now how do I find the angle at which the movie clips are at?
Code:
v MC 2
/|
/ |
/ | < y diff
/ |
MC 1 > /__|
^
angle x diff
I have been using a tidy little routine that I found here to calculate the difference in days between two dates in AS3. I am getting some strange results and I am wondering if any of you inter-codal-mega-lords can shed some light?
[Code]...
I'm not a genius in geometry, I'd like to find a point in as3 with the radius and a angle but I don't remember the rule, I know this should be simple!
View 3 RepliesWhat I've done so far is using your mouse you (click & release) you shoot a ball off in that direction using radians. Now what I'd like to happen is when the ball hits the wall it bounces off in it's reflection angle. Eg. if the ball hits the right-hand-side wall travelling at in a radians of -0.65 it should bounce back in the radians of about -2.5
View 3 RepliesI am looking for a way to find a vector if I know one point and 1 angle. Like I have A(x, y) and a vector starting from A(x, y) with an angle. I would like to know the position on a point X (x, y) that can be anywhere on that vector. I only know the coordinates of A and the angle. Possible?? I guess it has to be a function...
View 5 RepliesHow can we find out a moving movie clip's angle. I'm trying to make a shooting game in as3, I need to know the angle of the movieclip(bullet) when it gets hits on the wall. i.e., I have a movieclip named "ball", and which is moving with some speed and the coordinates are initially created by the gun's positions.
Code:
var angle:Number = gun.rotation - 1;
var bubbleX:Number = gun.x-130* Math.cos(angle * Math.PI / 180);
var bubbleY:Number = gun.y-130 * Math.sin(angle * Math.PI / 180);
var ball:MovingBall = new MovingBall();
ball.x = bubbleX;
I need to know, what is the angle of "ball" after it hitting the boundary areas..
At the moment I am using two mini objects within the line to calculate the slope of the line I have.
I was wondering if there was some easy function within as3 to find the slope of a line that had been drawn out, if not... I suppose I have my own theories on how to do it, such as checking for hit tests in a circle until I find the line.
I have a for loop that arranges icons in rows, and I want 6 icons per row. The number of icons is variable. So I was thinking that if I can find out how to test if a number is a perfect multiple of 6 (or 7, I suppose), I could then add a line in the loop that changes the _y value of the thumb to a higher number and resets the _x value to 0, thereby creating a new line. how do you test to see if a number is round?
View 4 Repliesfind a points in a line Actually i want to make some footsteps in a sand. The footsteps are dhynamically placed on the stage. How to find the points in a dioganal. see the image
View 1 Repliesim trying to create an image gallery where i place my images randomly over the stage but i want to place the images in the next most empty spot over the stage, for example if all the images somehow have been placed at the right of the stage i want to use math to detect that and find the empty left position .
Im sure there is a math formula to do it , will somebody knows the name for it ? or a link ?
i found this but uses hitTest and thats not efficient and it doesnt finds the big empty spot: [URL]
i'm trouble to find a points in a line Actually i want to make some footsteps in a sand. The footsteps are dhynamically placed on the stage. How to find the points in a dioganal.
View 1 RepliesSo, right now when I want to find the distance between two points, I go: dist = Math.sqrt((this_x-that_x)*(this_x-that_x)+(this_y-that_y)*(this_y-that_y)) BLECH! I don't want to do that every time. So I want to make a nice little function that I can apply to an object. Problem is, I don't know how to do this. Is it possible to end up with something as easy as: Math.dist(thisclipname, thatclipname)? How do you guys set up functions that do bulky math and return nice clean numbers?
View 4 RepliesI'm trying to find the difference (in days) between a date and the end of the year.
This code:
Code:
var NewYear = new Date((new Date()).getFullYear(), 11, 31);
var CalcDate = new Date();
DiffInDays = Math.floor((NewYear - CalcDate)/86400000);
Is nearly right, but it seems to be a couple of days out - If I run it as at today (Feb 23rd 2011), It gives me 310 days till the end of the year, whereas (by counting on all my fingers and toes) I get 313 days.
how can I get Flash to find the difference (in days) between two dates that the user enters? For example if I have six input text boxes and I call them:
day1
month1
year1
day2
month2
year2
respectively, how can I get a dynamic text box called, say, "output" to find the difference between two dates that the user enters into the six text boxes, e.g.
day1 - The user enters 03
month1 - The user enters 09
year 1 - The user enters 2006
day2 - The user enters 25
month2 - The user enters 12
year2 - The user enters 2006
How do I get Flash to find the difference between today and Christmas?
I know some basic trig. but how do i find an angle from an anchor point and a moving point?
adjecent = _root.anchor._x-_root._xmouse;
opposite = _root.anchor._y-_root._ymouse;
hypotenuse = ((adjacent ^ 2)+(opposite ^ 2)) ^ 0.5;
Ive made this rotation with AS. But Id like to make the bar to move from angle A to angle B smoothly.
How can I do this?
How to use math mod function in flex?
calculate like this 7 mod(%) 2 = 1
Is there a way to reverse Math.atan2 back into a dy,dx value? like dx =5 dy = 3 Math.atan2(dy,dx) then much later after dx and dy are released is there a way to get the dx dy values... hopefully that made sense...I have a cold and the medicine is messing with my head
View 2 RepliesI wonder how to make a Math.random() function, or something similar where it chooses a number from 0-9. But as the program progresses, another random variable will appear. That random value is what I want removed from the 0-9 scale. (The other random variable is also from 0-9)
View 4 RepliesHow can I make Flash calculate the value of the function y= (1 - x^2)^3 where x is the user input value?
View 3 RepliesFor some reason my math.floor function is not working (trace yields "undefined")..[code]
View 2 Repliesjust wondering if theres a difference between using
function x() {
}
and
x = function(){
}
i find sometimes,but rarely function x() will not run while the other will??
I am new to Flash and Action Scripts. I am trying to put together some Mortgage Calculators for a client and am having issues getting the syntax for the formula correct. Below is my code could someone look it over and give some pointers on how to structure the formula. It is a standard mortgage payment calculator. num1 is Loan Amount num2 is interest rate and num3 is loan term they are the instance names of the unput text boxes.
equels_btn.addEventListener(MouseEvent.CLICK,equel sClick);
num1.border = true;
num2.border = true;[code]........
I get the folowing error when I click the equels_btn
TypeError: Error #1006: value is not a function. at LoanPayment_fla::MainTimeline/equelsClick()