Method IsPointOn
- Namespace
- GeometryHelper.Core
- Assembly
- GeometryHelper.dll
IsPointOn(GeoLine3, GeoPoint3)
Checks whether a point lies on a line segment, using the default tolerance.
public static bool IsPointOn(GeoLine3 line, GeoPoint3 point)Parameters
Returns
IsPointOn(GeoLine3, GeoPoint3, Tolerance)
Checks whether a point lies on a line segment, within a tolerance.
public static bool IsPointOn(GeoLine3 line, GeoPoint3 point, Tolerance tolerance)Parameters
Returns
Remarks
The segment is bounded, so a point on its infinite carrier but past an endpoint is not on it. A degenerate segment is a single point, and the test reduces to comparing against that point.
IsPointOn(GeoRay3, GeoPoint3)
Checks whether a point lies on a ray, using the default tolerance.
public static bool IsPointOn(GeoRay3 ray, GeoPoint3 point)Parameters
Returns
IsPointOn(GeoRay3, GeoPoint3, Tolerance)
Checks whether a point lies on a ray, within a tolerance.
public static bool IsPointOn(GeoRay3 ray, GeoPoint3 point, Tolerance tolerance)Parameters
Returns
Remarks
A ray starts at its origin, so a point on its carrier line but behind the origin is not on it.
IsPointOn(GeoPlane3, GeoPoint3)
Checks whether a point lies on a plane, using the default tolerance.
public static bool IsPointOn(GeoPlane3 plane, GeoPoint3 point)Parameters
Returns
IsPointOn(GeoPlane3, GeoPoint3, Tolerance)
Checks whether a point lies on a plane, within a tolerance.
public static bool IsPointOn(GeoPlane3 plane, GeoPoint3 point, Tolerance tolerance)Parameters
Returns
Remarks
The threshold is EqualPlanar rather than EqualPoint: this is the flatness question, and a plane is unbounded, so the point being tested can sit arbitrarily far from the plane origin.
IsPointOn(GeoPolyline3, GeoPoint3)
Checks whether a point lies on a polyline, using the default tolerance.
public static bool IsPointOn(GeoPolyline3 polyline, GeoPoint3 point)Parameters
polylineGeoPolyline3pointGeoPoint3
Returns
IsPointOn(GeoPolyline3, GeoPoint3, Tolerance)
Checks whether a point lies on a polyline, within a tolerance.
public static bool IsPointOn(GeoPolyline3 polyline, GeoPoint3 point, Tolerance tolerance)Parameters
polylineGeoPolyline3pointGeoPoint3toleranceTolerance
Returns
Remarks
There is deliberately no Contains for a polyline. A curve has no interior, so the
question would only restate this one, and a chain tracing a closed shape would invite the wrong
answer. Convert it with ToPolygon when the enclosed area is what matters.
IsPointOn(GeoPolygon3, GeoPoint3)
Checks whether a point lies on the boundary of a polygon, using the default tolerance.
public static bool IsPointOn(GeoPolygon3 polygon, GeoPoint3 point)Parameters
polygonGeoPolygon3pointGeoPoint3
Returns
IsPointOn(GeoPolygon3, GeoPoint3, Tolerance)
Checks whether a point lies on the boundary of a polygon, within a tolerance.
public static bool IsPointOn(GeoPolygon3 polygon, GeoPoint3 point, Tolerance tolerance)Parameters
polygonGeoPolygon3pointGeoPoint3toleranceTolerance
Returns
IsPointOn(GeoCircle3, GeoPoint3)
Checks whether a point lies on the circumference of a circle, using the default tolerance.
public static bool IsPointOn(GeoCircle3 circle, GeoPoint3 point)Parameters
circleGeoCircle3pointGeoPoint3
Returns
IsPointOn(GeoCircle3, GeoPoint3, Tolerance)
Checks whether a point lies on the circumference of a circle, within a tolerance.
public static bool IsPointOn(GeoCircle3 circle, GeoPoint3 point, Tolerance tolerance)Parameters
circleGeoCircle3pointGeoPoint3toleranceTolerance