getTokens() area points/polygon

[bubblobill]

Is your feature request related to a problem? Please describe.
getTokens() using 'area' requires an array of all points within the area. Generating the list of points is computationally intensive in MT script and mathematically complex for many shapes. I don't know if it even works for non-grid related co-ordinates.

Describe the solution you'd like
The ability to describe the area by providing the bounding points of a polygon as used in movedOverPoints

Describe alternatives you've considered
For my use case of a rotated rectangle:
-Store a set of points and apply affine transforms to each point.
-Generate the points using linear interpolation for each line of the rectangle.
These take too long (3.5-17 secs depending on method) for an area 15 x 30 cells.

[Phergus]

Functionality should be handled in whatever is done for #3257.