Overview
This function calculates the distance between two points defined by their X and Y coordinates.
Parameters
distance(X1, Y1, X2, Y2)
X1
X coordinate of the first point.
Y1
Y coordinate of the first point.
X2
X coordinate of the second point.
Y2
Y coordinate of the second point.
For example...
distance(0, 0, 3, 4)
Returns 5.0 (distance between origin and point (3,4))