Check direction of polygon for Right Handed orietnation
list of x,y
Gets cross product of consecutive points in polygon and returns the sign of each. If most are positive, should try to reverse.
vector of signs
Co-linear values should return zero.
Jonathan M. Lees<email@example.com>
1 2 3 4 5 6 7 8
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.