PostGIS 3.0.6dev-r@@SVN_REVISION@@
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◆ ptarray_calculate_gbox_cartesian_2d()

static void ptarray_calculate_gbox_cartesian_2d ( const POINTARRAY pa,
GBOX gbox 
)
static

Definition at line 537 of file gbox.c.

538{
539 const POINT2D *p = getPoint2d_cp(pa, 0);
540
541 gbox->xmax = gbox->xmin = p->x;
542 gbox->ymax = gbox->ymin = p->y;
543
544 for (uint32_t i = 1; i < pa->npoints; i++)
545 {
546 p = getPoint2d_cp(pa, i);
547 gbox->xmin = FP_MIN(gbox->xmin, p->x);
548 gbox->xmax = FP_MAX(gbox->xmax, p->x);
549 gbox->ymin = FP_MIN(gbox->ymin, p->y);
550 gbox->ymax = FP_MAX(gbox->ymax, p->y);
551 }
552}
#define FP_MAX(A, B)
#define FP_MIN(A, B)
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:91
double ymax
Definition liblwgeom.h:343
double xmax
Definition liblwgeom.h:341
double ymin
Definition liblwgeom.h:342
double xmin
Definition liblwgeom.h:340
double y
Definition liblwgeom.h:376
double x
Definition liblwgeom.h:376
uint32_t npoints
Definition liblwgeom.h:413

References FP_MAX, FP_MIN, getPoint2d_cp(), POINTARRAY::npoints, POINT2D::x, GBOX::xmax, GBOX::xmin, POINT2D::y, GBOX::ymax, and GBOX::ymin.

Referenced by ptarray_calculate_gbox_cartesian().

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