Polygon Area

To calculate the area of a non-self-intersecting polygon:

see Polygon Area at :

Weisstein, Eric W. "Polygon Area." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PolygonArea.html

If the polygon is a lattice polygon, then area can be calculated from the number of interior lattice points by Picks theorem:

A = I + B/2 - 1, where I = # of interior lattice points, B = # of border points

SInce all the outlines in MindsEye are on a pixelated grid, this may be the fastest way to calculate the area.

Weisstein, Eric W. "Lattice Polygon." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/LatticePolygon.html

see also Randall Crandall Projects in Scientific Computation ISBN-10: 0387950095 (but I forget why this book is relevant)