PostGIS 3.7.0dev-r@@SVN_REVISION@@
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◆ lwpoint_inside_circle()

int lwpoint_inside_circle ( const LWPOINT p,
double  cx,
double  cy,
double  rad 
)

Definition at line 690 of file lwgeom.c.

691{
692 const POINT2D *pt;
693 POINT2D center;
694
695 if ( ! p || ! p->point )
696 return LW_FALSE;
697
698 pt = getPoint2d_cp(p->point, 0);
699
700 center.x = cx;
701 center.y = cy;
702
703 if ( distance2d_pt_pt(pt, &center) < rad )
704 return LW_TRUE;
705
706 return LW_FALSE;
707}
#define LW_FALSE
Definition liblwgeom.h:94
double distance2d_pt_pt(const POINT2D *p1, const POINT2D *p2)
Definition measures.c:2344
#define LW_TRUE
Return types for functions with status returns.
Definition liblwgeom.h:93
static const POINT2D * getPoint2d_cp(const POINTARRAY *pa, uint32_t n)
Returns a POINT2D pointer into the POINTARRAY serialized_ptlist, suitable for reading from.
Definition lwinline.h:97
POINTARRAY * point
Definition liblwgeom.h:471
double y
Definition liblwgeom.h:390
double x
Definition liblwgeom.h:390

References distance2d_pt_pt(), getPoint2d_cp(), LW_FALSE, LW_TRUE, LWPOINT::point, POINT2D::x, and POINT2D::y.

Referenced by LWGEOM_inside_circle_point().

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