Re: [Flashcoders] flash.geom.Point Problem.
That means you were stupid before having that girlfriend. =p
On 11/13/06, Arse @ Snepo <[EMAIL PROTECTED]> wrote:
Having a girlfriend who knows flash makes you clever by default. :)
just sayin.
a
jim wrote:
> Thanks man, my girlfriend just pointed the same thing to me, you are both
> clever & I am stupid.
>
> Jim
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Rákos Attila
> Sent: 12 November 2006 21:32
> To: Flashcoders mailing list
> Subject: Re: [Flashcoders] flash.geom.Point Problem.
>
>
> j> As you can see the first value is correct, the rest have weird values.
> Can
> j> anyone explain this to me?
>
> This is because of the precision errors of floating-point arithmetic.
> Try to round the results:
>
> import flash.geom.Point;
>
> var angles: Array = [0, 90, 180, 270, 360];
>
> for (var i = 0; i < angles.length; i++) {
> var p: Point = Point.polar(10, (angles[i] * (Math.PI/180)));
> trace("x: " + Math.round(p.x) + ", y: " + Math.round(p.y));
> }
>
> Attila
>
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--
*Anthony Eden*: Inventor at Snepo <http://www.snepo.com/>
contact | [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> | 0411 5622 02
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Cheers,
Ray Chuan
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Re: [Flashcoders] flash.geom.Point Problem.
Having a girlfriend who knows flash makes you clever by default. :)
just sayin.
a
jim wrote:
Thanks man, my girlfriend just pointed the same thing to me, you are both
clever & I am stupid.
Jim
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Rákos Attila
Sent: 12 November 2006 21:32
To: Flashcoders mailing list
Subject: Re: [Flashcoders] flash.geom.Point Problem.
j> As you can see the first value is correct, the rest have weird values.
Can
j> anyone explain this to me?
This is because of the precision errors of floating-point arithmetic.
Try to round the results:
import flash.geom.Point;
var angles: Array = [0, 90, 180, 270, 360];
for (var i = 0; i < angles.length; i++) {
var p: Point = Point.polar(10, (angles[i] * (Math.PI/180)));
trace("x: " + Math.round(p.x) + ", y: " + Math.round(p.y));
}
Attila
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--
*Anthony Eden*: Inventor at Snepo <http://www.snepo.com/>
contact | [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> | 0411 5622 02
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RE: [Flashcoders] flash.geom.Point Problem.
Thanks man, my girlfriend just pointed the same thing to me, you are both
clever & I am stupid.
Jim
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Rákos Attila
Sent: 12 November 2006 21:32
To: Flashcoders mailing list
Subject: Re: [Flashcoders] flash.geom.Point Problem.
j> As you can see the first value is correct, the rest have weird values.
Can
j> anyone explain this to me?
This is because of the precision errors of floating-point arithmetic.
Try to round the results:
import flash.geom.Point;
var angles: Array = [0, 90, 180, 270, 360];
for (var i = 0; i < angles.length; i++) {
var p: Point = Point.polar(10, (angles[i] * (Math.PI/180)));
trace("x: " + Math.round(p.x) + ", y: " + Math.round(p.y));
}
Attila
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Re: [Flashcoders] flash.geom.Point Problem.
j> As you can see the first value is correct, the rest have weird values. Can
j> anyone explain this to me?
This is because of the precision errors of floating-point arithmetic.
Try to round the results:
import flash.geom.Point;
var angles: Array = [0, 90, 180, 270, 360];
for (var i = 0; i < angles.length; i++) {
var p: Point = Point.polar(10, (angles[i] * (Math.PI/180)));
trace("x: " + Math.round(p.x) + ", y: " + Math.round(p.y));
}
Attila
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RE: [Flashcoders] flash.geom.Point Problem.
Just a quick additional note, I looked up how to comvert the co-ords myself and found the formula X= R*cos(Theta) Y= R*sin(Theta) On this website about converting co-ords http://www.delphiforfun.org/Programs/Math_Topics/polar-cartesian.htm . The thing is this formula gives exactly the same un expected results. Any help on this would be greatly appreciated. Jim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jim Sent: 12 November 2006 21:15 To: 'Flashcoders mailing list' Subject: [Flashcoders] flash.geom.Point Problem. Hello all, Im using the Point class to convert polar co-ordinates to Cartesian co-ordinates (i.e. an angle & length to an x & y co-ordinate). The built in function Point.polar(len:Number, angle:Number) should do exactly this but I am getting some weird values returned. This code takes the angles 0, 90, 180, 270 & 360 with a length of 10 for each and converts to an x & y. [[code snippet]] import flash.geom.Point; trace(Point.polar(10, (0 * (Math.PI/180; trace(Point.polar(10, (90 * (Math.PI/180; trace(Point.polar(10, (180 * (Math.PI/180; trace(Point.polar(10, (270 * (Math.PI/180; trace(Point.polar(10, (360 * (Math.PI/180; This is the output: (x=10, y=0) (x=6.12303176911189e-16, y=10) (x=-10, y=1.22460635382238e-15) (x=-1.83690953073357e-15, y=-10) (x=10, y=-2.44921270764475e-15) As you can see the first value is correct, the rest have weird values. Can anyone explain this to me? Jim ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
[Flashcoders] flash.geom.Point Problem.
Hello all, Im using the Point class to convert polar co-ordinates to Cartesian co-ordinates (i.e. an angle & length to an x & y co-ordinate). The built in function Point.polar(len:Number, angle:Number) should do exactly this but I am getting some weird values returned. This code takes the angles 0, 90, 180, 270 & 360 with a length of 10 for each and converts to an x & y. [[code snippet]] import flash.geom.Point; trace(Point.polar(10, (0 * (Math.PI/180; trace(Point.polar(10, (90 * (Math.PI/180; trace(Point.polar(10, (180 * (Math.PI/180; trace(Point.polar(10, (270 * (Math.PI/180; trace(Point.polar(10, (360 * (Math.PI/180; This is the output: (x=10, y=0) (x=6.12303176911189e-16, y=10) (x=-10, y=1.22460635382238e-15) (x=-1.83690953073357e-15, y=-10) (x=10, y=-2.44921270764475e-15) As you can see the first value is correct, the rest have weird values. Can anyone explain this to me? Jim ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
