Test 04: NFFF operation

Cubic volume with Liao absorbing boundary condition and a point source. Near-to-far field transformation (NFFF) is applied to calculate values of electric field in single point in a computation space, being directly comparable with direct computation.

What can be tested:

• NFFF operation, try different NFFF integration boundary sizes and shapes

Compare out.gwy with test04_out.gwy, xpnt with test01_point_log to check proper performance.

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