PostGIS  2.1.10dev-r@@SVN_REVISION@@
int lw_pt_in_seg ( const POINT2D P,
const POINT2D A1,
const POINT2D A2 
)

Returns true if P is between A1/A2.

Only makes sense if P has already been deterined to be on the line defined by A1/A2.

Definition at line 96 of file lwalgorithm.c.

References POINT2D::x, and POINT2D::y.

Referenced by lw_dist2d_seg_arc(), and ptarray_contains_point_partial().

97 {
98  return ((A1->x <= P->x && P->x < A2->x) || (A1->x >= P->x && P->x > A2->x)) ||
99  ((A1->y <= P->y && P->y < A2->y) || (A1->y >= P->y && P->y > A2->y));
100 }
double x
Definition: liblwgeom.h:284
double y
Definition: liblwgeom.h:284

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