[Flashcoders] calculating distance between two points

2008-03-11 Thread Lehr, Theodore M (N-SGIS)
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

2008-03-11 Thread Kenneth Kawamoto

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

2008-03-11 Thread Anthony Cintron
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

2008-03-11 Thread Ivan Dembicki
Or you can use new revolutionary Point.distance(pt1, pt2);

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RE: [Flashcoders] calculating distance between two points

2008-03-11 Thread Graham.Burton
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

2008-03-11 Thread Jim Hayes
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

2008-03-11 Thread Paul Andrews

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 )+))

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

2008-03-11 Thread Fumio Nonaka

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

2008-03-11 Thread Paul Andrews

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
http://bezier.googlecode.com
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RE: [Flashcoders] calculating distance between two points

2008-03-11 Thread Merrill, Jason
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? 
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Re: [Flashcoders] calculating distance between two points

2008-03-11 Thread Piers Cowburn

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?
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RE: [Flashcoders] calculating distance between two points

2008-03-11 Thread Merrill, Jason
Very punny.

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-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

2008-03-11 Thread Allandt Bik-Elliott (Receptacle)

aargh

that pun made me bleed



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

2008-03-11 Thread Jim Hayes
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
http://bezier.googlecode.com
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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

2008-03-11 Thread Paul Andrews
- 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



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?  


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

2008-03-11 Thread Kenneth Kawamoto
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



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?  


Yes, my explanation was what was completely pointless..

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Re: [Flashcoders] calculating distance between two points

2008-03-11 Thread Cory Petosky
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
  
  
   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?
  
   Yes, my explanation was what was completely pointless..
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