-def distancePointPoint(pointA, pointB):
- """
- subroutine to calculate distance between two points
- result of calculated distance is has 10**-5 precision
- """
- xdiff = math.pow((pointA.x() - pointB.x()), 2)
- ydiff = math.pow((pointA.y() - pointB.y()), 2)
- return round(math.sqrt(xdiff + ydiff), 5)
-
-def distancePointLine(point, line):
- """
- subroutine to calculate distance between point and line
- result of calculated distance is has 10**-5 precision
- """
- aStartPoint = geomDataAPI_Point2D(line.attribute("StartPoint"))
- aEndPoint = geomDataAPI_Point2D(line.attribute("EndPoint"))
- # orthogonal direction
- aDirX = -(aEndPoint.y() - aStartPoint.y())
- aDirY = (aEndPoint.x() - aStartPoint.x())
- aLen = math.sqrt(aDirX**2 + aDirY**2)
- aDirX = aDirX / aLen
- aDirY = aDirY / aLen
- aVecX = point.x() - aStartPoint.x()
- aVecY = point.y() - aStartPoint.y()
- return round(math.fabs(aVecX * aDirX + aVecY * aDirY), 5)
-