Picket |
Picket - a point object defining spatial position on a route of points by measurements. The system of linear coordinates defined by a route is used for search of a location and calculating coordinates of pickets by measurements on the route. To determine the location of the picket on the route, a search of the metrics segment (i, i+1) is carried out on which the picket is located.
Mi<MP<Mi+1 Calculation of planned coordinates of picket, at known measurement, is made according to the formulas:
XP = Xi + (Xi+1 - Xi) * (MP - Mi)/(Mi+1 - Mi),
YP = Yi + (Yi+1 - Yi) * (MP - Mi)/(Mi+1 - Mi)
XPYPMP - coordinates of the picket XiYiMi - coordinates of the i-th point of the route metric Xi+1Yi+1Mi+1 - coordinates of the i+1st point of the route metric
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