Refine mesh

[steve725]

What is the right way to refine a mesh inside a given region (polygon)?
Is it necessary to create an additional area-file that is used with the "r"-switch or is it possible to refine a mesh e.g. with the "regions" key ?

[steve725]

I already found a solution:

First triangulate without refinement

Create a list with the area of each triangle; e.g
tri_max_area = [10, 10, 10, 30, 30 ...]
where tri_max_area[i] is the max area of triangle i

3. Add the following key-value-pair to the input dictionary:
   "triangle_max_area": tri_max_area

Perform a second triangulation with the additional arguments "ra" while there is no following maximum triangle area after the "a" switch