Provides access to members that extend IEnumCurve.
Members
Name | Description | |
---|---|---|
Clone | Returns a copy of this enumerator positioned at the same segment. | |
CurveDistance | The current distance from the start of the curve. | |
GetSubcurve | Extracts a portion of this curve into a new curve. | |
Next | Moves iterator to a specified distance along the curve. | |
PartIndex | The current part index. | |
QueryPoint | Copies a location on this curve into pointOnCurve. AsRatio is true when fromDistance is normalized to the interval [0..1]. | |
QuerySubcurve | Copies a portion of this curve into an existing subcurve. AsRatio is true when fromDistance and toDistance are normalized to the interval [0..1]. | |
Reset | Resets the iterator to the start of the curve. | |
Segment | The segment covering the current distance of this curve iterator. | |
SegmentDistance | The distance within the current segment of the current distance of this curve iterator. | |
SegmentIndex | The current segment index within the current part. | |
StopOptions | Stop options for the distance iterator. | |
StopReason | The reason for the current position of the distance iterator. |
IEnumCurve2.QueryPoint Method
Copies a location on this curve into pointOnCurve. AsRatio is true when fromDistance is normalized to the interval [0..1].
Public Sub QueryPoint ( _
ByVal fromDistance As Double, _
ByVal asRatio As Boolean, _
ByVal pointOnCurve As IPoint _
)
public void QueryPoint (
double fromDistance,
bool asRatio,
IPoint pointOnCurve
);
Description
The QueryPoint method returns a point object located on the input curve at the fromDistance calculated along the curve. This method can be used to quickly retrieve a large sequence of evenly or unevenly spaced points along a curve. This could be used to place symbols along a curve, for example railroads.
Remarks
Note: Gaps between parts are ignored in distance computations.
Parameters description:
fromDistance: Input Double. Input distance that determines where along the point should be created. The value of that parameter should be in map unit unless asRatio is true.asRatio: Input Boolean. The asRatio determines if the input distances should be interpreted as map unit asRatio = false distance or parametric distance asRatio = True (0 = distance of 0, 1 = full length of the curve).
Note: The output geometry must be co-created prior to the query. The output geometry is not co-created by the method; it is populated. This can be used in performance critical situations. For example, creating the geometry only once outside a loop and use the query method could improve performance.
IEnumCurve2.QuerySubcurve Method
Copies a portion of this curve into an existing subcurve. AsRatio is true when fromDistance and toDistance are normalized to the interval [0..1].
Public Sub QuerySubcurve ( _
ByVal fromDistance As Double, _
ByVal toDistance As Double, _
ByVal asRatio As Boolean, _
ByVal subcurve As ICurve _
)
public void QuerySubcurve (
double fromDistance,
double toDistance,
bool asRatio,
ICurve subcurve
);
Description
The QuerySubCurve method returns a polyline object corresponding to a portion of the input curve.
Remarks
Note: Gaps between parts are ignored in distance computations.
Parameters description:
fromDistance: Input Double. Input distance that determines where the subcurve should start. The value of that parameter should be in map unit unless asRatio is true.toDistance: Input Double. Input distance that determines where the subcurve should stop. The value of that parameter should be in map unit unless asRatio is true.asRatio: Input Boolean. The asRatio determines if the input distances should be interpreted as map unit asRatio = false distance or parametric distance asRatio = True (0 = distance of 0, 1 = full length of the curve).
subcurve: Output polyline object. It contains the output subcurve.
Note: The output geometry must be co-created prior to the query. The output geometry is not co-created by the method; it is populated. This can be used in performance critical situations. For example, creating the geometry only once outside a loop and use the query method could improve performance.
Inherited Interfaces
Interfaces | Description |
---|---|
IEnumCurve | Provides access to members that allow efficient construction of sequential subcurves along a polyline or polygon. |
Classes that implement IEnumCurve2
Classes | Description |
---|