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JRSteensen
Beginner


Joined: 27 Jul 2004
Posts: 28

PostPosted: Mon Aug 17, 2020 6:32 pm   

Need help calculating distance between 2 XYZ coordinates.
 
Hey all. Been a long time since I did much scripting in CMUD, but getting back into it.

I am running the following and consistently getting a result of "0" regardless of input. I am guessing it has something to do with floating point math, but no matter where I put the %float() func, I'm not getting the desired output.

Code:

;Formula for calculating distance between 2 XYZ Coordinates
;AB = sqrt((x2-x1)^2+(y2-y1)^2+(z2-z1)^2)
;%1 = X1, %2 = Y1, %3 = Z1, %4 = X2, %5 = Y2, %6 = Z2

$AB = %sqrt({((%4-%1)^2)-((%5-%2)^2)-((%6-%3)^2)})
#SAY $AB


I've tried everything from XYZDist 1 1 1 0 0 0 to XYZDist 999 999 999 0 0 0 for input.
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JRSteensen
Beginner


Joined: 27 Jul 2004
Posts: 28

PostPosted: Tue Aug 18, 2020 6:53 pm   
 
I got her solved! The below does famously.

Code:

$AB = {%sqrt(((%4-%1)*(%4-%1))+((%5-%2)*(%5-%2))+((%6-%3)*(%6-%3)))}
#SHOW $AB


Is the ^x notation not supported by CMUD? I can't find ANYTHING about exponents in the documentation.
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4264
Location: Pensacola, FL, USA

PostPosted: Tue Aug 18, 2020 8:52 pm   
 
I'm not sure why you have curly brackets in your %sqrt call

Try:

%sqrt(%float(((%4-%1)^2)-((%5-%2)^2)-((%6-%3)^2)))
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Discord: Shalimar#3679
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shalimar
GURU


Joined: 04 Aug 2002
Posts: 4264
Location: Pensacola, FL, USA

PostPosted: Tue Aug 18, 2020 9:11 pm   
 
or

$x=(%4-%1)
$y=(%5-%2)
$z=(%6-%3)
$ab=%sqrt(%float(($x*$x)+($y*$y)+($z*$z)))

P.S. It is + not -, you had the formulae wrong.
_________________
Discord: Shalimar#3679
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JRSteensen
Beginner


Joined: 27 Jul 2004
Posts: 28

PostPosted: Wed Aug 19, 2020 12:06 am   
 
shalimar wrote:
or

$x=(%4-%1)
$y=(%5-%2)
$z=(%6-%3)
$ab=%sqrt(%float(($x*$x)+($y*$y)+($z*$z)))

P.S. It is + not -, you had the formulae wrong.


Yeah I did. Thanks!
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