CFLib.org – Common Function Library Project

Description:
Calculates the distance between two sets of coordinates on the Cartesian coordinate system

Return Values:
Returns a simple value

Example:

<CFSET x1=1>
  <CFSET y1=5>
  <CFSET x2=1>
  <CFSET y2=-5>
  <CFOUTPUT>
  Given:
  <UL>
  <LI>x1,y1 = (1,5)
  <LI>x2,y2 = (1,-5)
  </UL>
  The distance between (#x1#,#y1#) and (#x2#,#y2#) = #CoDistance(x1,y1,x2,y2)#
  </CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * Calculates the distance between two sets of coordinates.
 * 
 * @param x1      x position of the first point 
 * @param y1      y position of the first point 
 * @param x2      x position of the second point 
 * @param y2      y position of the second point 
 * @return Returns a simple value 
 * @author Rob Brooks-Bilson (rbils@amkor.com) 
 * @version 1.0, July 17, 2001 
 */
function CoDistance(x1,y1,x2,y2)
{
  Return SQR(((x1-x2)*(x1-x2))+((y1-y2)*(y1-y2)));
}