public static IEnumerable <IPoint> Execute(IPolygon poly1, IPolygon poly2)
{
foreach (IPoint point in poly1.GetCoordinates().First())
{
if (PointInPolygon.Execute(point, poly2))
{
yield return(point);
}
}
foreach (IPoint point in poly2.GetCoordinates().First())
{
if (PointInPolygon.Execute(point, poly1))
{
yield return(point);
}
}
IEnumerable <IPoint> intersections = LineIntersect.Execute(PolygonToLine.Execute(poly1), PolygonToLine.Execute(poly2));
if (intersections != null && intersections.Count() > 0)
{
foreach (IPoint point in intersections)
{
yield return(point);
}
}
}
public static bool ExecuteBoolean(IPolygon poly1, IPolygon poly2)
{
foreach (IPoint point in poly1.GetCoordinates().First())
{
if (PointInPolygon.Execute(point, poly2))
{
return(true);
}
}
foreach (IPoint point in poly2.GetCoordinates().First())
{
if (PointInPolygon.Execute(point, poly1))
{
return(true);
}
}
IEnumerable <IPoint> intersections = LineIntersect.Execute(PolygonToLine.Execute(poly1), PolygonToLine.Execute(poly2));
if (intersections != null && intersections.Count() > 0)
{
return(true);
}
return(false);
}
public static IEnumerable <IPoint> Execute(IEnumerable <IPoint> line, IPolygon poly)
{
IPoint previous = null;
IGeometry polygonLine = PolygonToLine.Execute(poly);
foreach (IPoint point in line)
{
if (PointInPolygon.Execute(point, poly))
{
yield return(point);
}
if (previous != null)
{
IEnumerable <IPoint> intersections = LineIntersect.Execute(LineString.Create(previous, point), polygonLine);
if (intersections != null)
{
foreach (IPoint intersection in intersections)
{
yield return(intersection);
}
}
}
previous = point;
}
}
public static bool ExecuteBoolean(IMultiLine line1, IMultiLine line2)
{
IEnumerable <IPoint> intersections = LineIntersect.Execute(line1, line2);
if (intersections != null && intersections.Count() > 0)
{
return(true);
}
return(false);
}
public static IEnumerable <IPoint> Execute(IMultiLine line1, IMultiLine line2)
{
IEnumerable <IPoint> intersections = LineIntersect.Execute(line1, line2);
if (intersections != null && intersections.Count() > 0)
{
return(intersections);
}
return(null);
}
public static bool ExecuteBoolean(IEnumerable <IPoint> line, IPolygon poly)
{
foreach (IPoint point in line)
{
if (PointInPolygon.Execute(point, poly))
{
return(true);
}
}
IEnumerable <IPoint> intersections = LineIntersect.Execute(LineString.Create(line.ToArray()), PolygonToLine.Execute(poly));
if (intersections != null && intersections.Count() > 0)
{
return(true);
}
return(false);
}
public static Result Execute(IPoint point = null, IGeometry lines = null)
{
if (point == null)
{
throw new Exception("point is a required parameter");
}
if (lines == null)
{
throw new Exception("lines is a required parameter");
}
IPoint closestPoint = new Point(Double.PositiveInfinity, Double.PositiveInfinity);
double closestPointDistance = Double.PositiveInfinity;
double closestPointLocation = Double.PositiveInfinity;
int closestPointIdx = -1;
double length = 0.0;
foreach (IEnumerable <IPoint> line in lines.GetCoordinates())
{
IPoint start = null, end = null;
int startIdx = -1, endIdx = -1;
foreach (IPoint coord in line)
{
start = end;
startIdx = endIdx;
end = coord;
endIdx++;
if (start == null)
{
continue;
}
double startDistance = point.DistanceTo(start);
double endDistance = point.DistanceTo(end);
double sectionLength = start.DistanceTo(end);
double intersectDistance = double.PositiveInfinity;
double intersectlocation = double.PositiveInfinity;
double bearing = start.BearingTo(end);
double maxDistance = Math.Max(startDistance, endDistance);
IPoint ppt1 = point.Destination(maxDistance, bearing + 90);
IPoint ppt2 = point.Destination(maxDistance, bearing - 90);
IEnumerable <IPoint> intersect = LineIntersect.Execute(
LineString.Create(ppt1, ppt2),
LineString.Create(start, end));
IPoint intersectPt = null;
if (intersect.Count() > 0)
{
intersectPt = intersect.First();
intersectDistance = point.DistanceTo(intersectPt);
intersectlocation = length + start.DistanceTo(intersectPt);
}
if (startDistance < closestPointDistance)
{
closestPoint = start;
closestPointIdx = startIdx;
closestPointLocation = length;
closestPointDistance = startDistance;
}
if (endDistance < closestPointDistance)
{
closestPoint = end;
closestPointIdx = endIdx;
closestPointLocation = length + sectionLength;
closestPointDistance = endDistance;
}
if (intersectPt != null && intersectDistance < closestPointDistance)
{
closestPoint = intersectPt;
closestPointIdx = startIdx;
closestPointDistance = intersectDistance;
closestPointLocation = intersectlocation;
}
length += sectionLength;
}
}
return(Result.Create(closestPoint, closestPointDistance, closestPointLocation));
}