### [Flashcoders] calculating distance between two points

```How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it
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### Re: [Flashcoders] calculating distance between two points

```
You can use our old friend Pythagoras':

c^2 = a^2 + b^2

Kenneth Kawamoto
http://www.materiaprima.co.uk/

Lehr, Theodore M (N-SGIS) wrote:

How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it

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### Re: [Flashcoders] calculating distance between two points

```dx:Number = obj1.x - obj2.x;
dy:Number = obj1.y - obj2.y;

distance:Number = Math.sqrt(dx * dx + dy * dy);

On Tue, Mar 11, 2008 at 8:05 AM, Lehr, Theodore M (N-SGIS)
[EMAIL PROTECTED] wrote:

How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it
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### Re: [Flashcoders] calculating distance between two points

```Or you can use new revolutionary Point.distance(pt1, pt2);

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### RE: [Flashcoders] calculating distance between two points

```The square root of the sum of the squares of the x difference and the y
difference.

Pythagoras

-Original Message-

How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it
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### RE: [Flashcoders] calculating distance between two points

```Pythagorus, innit?
The square root of the the sum of the difference in x squared and the
difference in y squared ? Or was I not listening in school way back
then?

I think there may be an inbuilt method in flash, mind you, but if there
is I don't know what it is.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Lehr,
Theodore M (N-SGIS)
Sent: 11 March 2008 12:05
To: Flash Coders List
Subject: [Flashcoders] calculating distance between two points

How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it
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### Re: [Flashcoders] calculating distance between two points

```

The square of the hypotenuse equals the sum of the squares of the opposite
two sides should be familar..  ;-)

Math.sqrt ( Math.pow(Math.abs(x1-x2),2 )+Math.pow(Math.abs(y1-y2),2 )+))

Paul
- Original Message -
From: Lehr, Theodore M (N-SGIS) [EMAIL PROTECTED]

To: Flash Coders List flashcoders@chattyfig.figleaf.com
Sent: Tuesday, March 11, 2008 12:05 PM
Subject: [Flashcoders] calculating distance between two points

How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it
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```

### Re: [Flashcoders] calculating distance between two points

```
Using Point class?

import flash.geom.Point;
var p0:Point = new Point(0, 0);
var p1:Point = new Point(1, Math.sqrt(3));
var nDistance:Number = Point.distance(p0, p1);
trace(nDistance);  // Output: 2
_
Jim Hayes wrote:

I think there may be an inbuilt method in flash, mind you, but if there
is I don't know what it is.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Lehr,
Theodore M (N-SGIS)
Sent: 11 March 2008 12:05
To: Flash Coders List
Subject: [Flashcoders] calculating distance between two points

How do you calculate the distance between two points with different x
and y values? I know it is some simple math formula - I just don't know
it

--
Fumio Nonaka
mailto:[EMAIL PROTECTED]
http://www.FumioNonaka.com/
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```

### Re: [Flashcoders] calculating distance between two points

```
Aha - didn't know about that!

Paul
- Original Message -
From: Ivan Dembicki [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; Flash Coders List
flashcoders@chattyfig.figleaf.com

Sent: Tuesday, March 11, 2008 12:34 PM
Subject: Re: [Flashcoders] calculating distance between two points

Or you can use new revolutionary Point.distance(pt1, pt2);

--
iv
http://www.bezier.ru
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### RE: [Flashcoders] calculating distance between two points

```Your teacher must be cringing!

The square of the hypotenuse equals the sum of the squares
of the opposite two sides should be familar..  ;-)

Math.sqrt ( Math.pow(Math.abs(x1-x2),2
)+Math.pow(Math.abs(y1-y2),2 )+))

Why not skip the math lessons and use the Point class?

var dist:Number = Point.distance(p1, p2);

Jason Merrill
Bank of America
GTO LLD Solutions Design  Development
eTools  Multimedia

Bank of America Flash Platform Developer Community

Are you a Bank of America associate interested in innovative learning
ideas and technologies?
Check out our internal  GTO Innovative Learning Blog  subscribe.

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```

### Re: [Flashcoders] calculating distance between two points

```
Good point

On 11 Mar 2008, at 13:53, Merrill, Jason wrote:

Why not skip the math lessons and use the Point class?

var dist:Number = Point.distance(p1, p2);

Jason Merrill
Bank of America
GTO LLD Solutions Design  Development
eTools  Multimedia

Bank of America Flash Platform Developer Community

Are you a Bank of America associate interested in innovative learning
ideas and technologies?
Check out our internal  GTO Innovative Learning Blog  subscribe.

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[EMAIL PROTECTED]
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```

### RE: [Flashcoders] calculating distance between two points

```Very punny.

Jason Merrill
Bank of America
GTO LLD Solutions Design  Development
eTools  Multimedia

Bank of America Flash Platform Developer Community

Are you a Bank of America associate interested in innovative learning
ideas and technologies?
Check out our internal  GTO Innovative Learning Blog  subscribe.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Piers Cowburn
Sent: Tuesday, March 11, 2008 10:24 AM
To: Flash Coders List
Subject: Re: [Flashcoders] calculating distance between two points

Good point

On 11 Mar 2008, at 13:53, Merrill, Jason wrote:

Why not skip the math lessons and use the Point class?

var dist:Number = Point.distance(p1, p2);

Jason Merrill
Bank of America
GTO LLD Solutions Design  Development eTools  Multimedia

Bank of America Flash Platform Developer Community

Are you a Bank of America associate interested in
innovative learning
ideas and technologies?
Check out our internal  GTO Innovative Learning Blog  subscribe.

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```

### Re: [Flashcoders] calculating distance between two points

```
aargh

On 11 Mar 2008, at 14:24, Piers Cowburn wrote:

Good point

On 11 Mar 2008, at 13:53, Merrill, Jason wrote:

Why not skip the math lessons and use the Point class?

var dist:Number = Point.distance(p1, p2);

Jason Merrill
Bank of America
GTO LLD Solutions Design  Development
eTools  Multimedia

Bank of America Flash Platform Developer Community

Are you a Bank of America associate interested in innovative learning
ideas and technologies?
Check out our internal  GTO Innovative Learning Blog  subscribe.

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```

### RE: [Flashcoders] calculating distance between two points

```That was the one I thought I'd heard of. But...
Too easy! Boring! Soh cah toa !
(and that as far as I can remember is actually the only useful thing I
did learn in school)

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ivan
Dembicki
Sent: 11 March 2008 12:35
To: [EMAIL PROTECTED]; Flash Coders List
Subject: Re: [Flashcoders] calculating distance between two points

Or you can use new revolutionary Point.distance(pt1, pt2);

--

iv
http://www.bezier.ru
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registration No. 648874577.

This e-mail is confidential and may be privileged. It may be read, copied and
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### Re: [Flashcoders] calculating distance between two points

```- Original Message -
From: Merrill, Jason [EMAIL PROTECTED]

To: Flash Coders List flashcoders@chattyfig.figleaf.com
Sent: Tuesday, March 11, 2008 1:53 PM
Subject: RE: [Flashcoders] calculating distance between two points

The square of the hypotenuse equals the sum of the squares
of the opposite two sides should be familar..  ;-)

Math.sqrt ( Math.pow(Math.abs(x1-x2),2
)+Math.pow(Math.abs(y1-y2),2 )+))

Why not skip the math lessons and use the Point class?

Yes, my explanation was what was completely pointless..
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### Re: [Flashcoders] calculating distance between two points

```Isn't it pointless to do Math.abs() since result is always positive
number anyway? ;)

Kenneth Kawamoto
http://www.materiaprima.co.uk/

Paul Andrews wrote:
- Original Message - From: Merrill, Jason
[EMAIL PROTECTED]

To: Flash Coders List flashcoders@chattyfig.figleaf.com
Sent: Tuesday, March 11, 2008 1:53 PM
Subject: RE: [Flashcoders] calculating distance between two points

The square of the hypotenuse equals the sum of the squares of the
opposite two sides should be familar..  ;-)

Math.sqrt ( Math.pow(Math.abs(x1-x2),2 )+Math.pow(Math.abs(y1-y2),2
)+))

Why not skip the math lessons and use the Point class?

Yes, my explanation was what was completely pointless..

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### Re: [Flashcoders] calculating distance between two points

```Point.distance (like pretty much all Flash math functions) is
abysmally slow and shouldn't be used in anything performance-critical.
Write your own replacement (using formula provided above) if you're
doing a bunch of these every frame.

On 3/11/08, Kenneth Kawamoto [EMAIL PROTECTED] wrote:
Isn't it pointless to do Math.abs() since result is always positive
number anyway? ;)

Kenneth Kawamoto
http://www.materiaprima.co.uk/

Paul Andrews wrote:
- Original Message - From: Merrill, Jason
[EMAIL PROTECTED]
To: Flash Coders List flashcoders@chattyfig.figleaf.com
Sent: Tuesday, March 11, 2008 1:53 PM
Subject: RE: [Flashcoders] calculating distance between two points

The square of the hypotenuse equals the sum of the squares of the
opposite two sides should be familar..  ;-)

Math.sqrt ( Math.pow(Math.abs(x1-x2),2 )+Math.pow(Math.abs(y1-y2),2
)+))

Why not skip the math lessons and use the Point class?

Yes, my explanation was what was completely pointless..
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```