RGCheckInside#

Determines if a set of given points are inside the region or not.

Synopsis#

#include "slepcrg.h" 
PetscErrorCode RGCheckInside(RG rg,PetscInt n,PetscScalar *ar,PetscScalar *ai,PetscInt *inside)

Not Collective

Input Parameters#

  • rg - the region context

  • n - number of points to check

  • ar - array of real parts

  • ai - array of imaginary parts

Output Parameter#

  • inside - array of results (1=inside, 0=on the contour, -1=outside)

Note#

The point a is expressed as a couple of PetscScalar variables ar,ai. If built with complex scalars, the point is supposed to be stored in ar, otherwise ar,ai contain the real and imaginary parts, respectively.

If a scaling factor was set, the points are scaled before checking.

See Also#

RGSetScale(), RGSetComplement()

Level#

intermediate

Location#

src/sys/classes/rg/interface/rgbasic.c

Implementations#

RGCheckInside_Ellipse() in src/sys/classes/rg/impls/ellipse/rgellipse.c
RGCheckInside_Interval() in src/sys/classes/rg/impls/interval/rginterval.c
RGCheckInside_Polygon() in src/sys/classes/rg/impls/polygon/rgpolygon.c
RGCheckInside_Ring() in src/sys/classes/rg/impls/ring/rgring.c

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