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)

Notes#

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#

RG: Region, 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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