Lines Matching refs:a
10 * Polygon: A polygon is a plane figure that is bounded by a closed path,
11 * composed of a finite sequence of straight line segments
91 $a = 0.0;
94 $a = $a + ($p->x() * $points[$j]->y()) - ($p->y() * $points[$j]->x());
97 $area = $signed ? ($a / 2) : abs(($a / 2));
248 * For a given point, determine whether it's bounded by the given polygon.
254 * @param boolean $pointOnBoundary - whether a boundary should be considered "in" or not
255 * @param boolean $pointOnVertex - whether a vertex should be considered "in" or not
262 // Check if the point sits exactly on a vertex