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Finds the difference between two vectors and returns its length. Syntax:
diff_len=VectorDist(vector1, vector2);
The Math
diff_len=sqrt(sqr(x1-x2) + sqr(y1-y2) + sqr(z1-z2));
Geometrical Application
When one vector is subtracted from another, the resultant vector becomes a line from the tip of one vector to the other. The length of this line is the distance between the vectors.
VectorDist() uses the displacement of the vector from '0 0 0' to measure the distance between vector1 and vector2. The operation is the same with positions; the difference is how you think of a position as opposed to a displacement vector.
