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IBezierCurveGEN. You can use the GEN interface proxy's Object-constructor to cast an instance of this interface to its GEN equivalent. Any ArcGIS class that implements this interface also implements the GEN interface.
public interface IBezierCurve
Provides access to members that identify third degree bezier curve segments and defines their properties.
A Bezier Curve is a non-linear Segment defined by four control points. The bezier curve starts at control point 0 and ends at control point 3. Control points 0 and 1 define the tangent at the from point and control points 2 and 3 define the tangent at the to point. The length of these tangent lines and position of the control points determines the shape of the created bezier curve.
The IBezierCurve interface is used to define the properties/behavior of a Bezier Curve. For example, use the methods in this interface to put control points to define a Bezier Curve object or query an existing Bezier Curve object to get its four control points.
IConstructBezierCurve,
IPoint,
IGeometry,
ISegment| Method Summary | |
|---|---|
int |
getDegree()
Deprecated. The degree of the Bezier curve. |
void |
putCoord(int index,
IPoint controlPoint)
Deprecated. Sets the specified (0 <= index < 4) control point of this Bezier curve. |
void |
putCoords(int numPoints,
IPoint controlPoints)
Deprecated. Sets this Bezier curve's control points from an array of between 1 to 4 input points. |
void |
queryChordLengthTangentAtFrom(IPoint tangent,
boolean[] setByUser)
Deprecated. Returns tangent vector at 'from' point, based on chord length parametrization; and whether it has been set by user or by smoothing process. |
void |
queryChordLengthTangentAtTo(IPoint tangent,
boolean[] setByUser)
Deprecated. Returns tangent vector at 'to' point, based on chord length parametrization; and whether it has been set by user or by smoothing process. |
void |
queryCoord(int index,
IPoint controlPoint)
Deprecated. Copies the specified control point of this Bezier curve into the input point. |
void |
queryCoords(IPoint controlPoints)
Deprecated. Copies this Bezier curve's control points into the array of 4 existing points. |
void |
queryInflectionPoint(IPoint inflectionPoint)
Deprecated. Finds inflection point; sets it empty if none exists. |
void |
setChordLengthTangentAtFrom(IPoint tangent,
boolean setByUser)
Deprecated. Establishes tangent vector at 'from' point, based on chord length parametrization; and sets flag whether it has been set by user or by smoothing process. |
void |
setChordLengthTangentAtTo(IPoint tangent,
boolean setByUser)
Deprecated. Establishes tangent vector at 'to' point, based on chord length parametrization; and sets flag whether it has been set by user or by smoothing process. |
| Methods inherited from interface com.esri.arcgis.geometry.ICurve |
|---|
getFromPoint, getLength, getSubcurve, getToPoint, isClosed, queryFromPoint, queryNormal, queryPoint, queryPointAndDistance, queryTangent, queryToPoint, reverseOrientation, setFromPoint, setToPoint |
| Methods inherited from interface com.esri.arcgis.geometry.IGeometry |
|---|
geoNormalize, geoNormalizeFromLongitude, getDimension, getEnvelope, getGeometryType, getSpatialReference, isEmpty, project, queryEnvelope, setEmpty, setSpatialReferenceByRef, snapToSpatialReference |
| Method Detail |
|---|
void queryCoords(IPoint controlPoints)
throws IOException,
AutomationException
QueryCoords returns all four of the BezierCurve control points into an array of 4 Points.
Use QueryCoord to get a specific control point.
controlPoints - A reference to a com.esri.arcgis.geometry.IPoint (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void putCoords(int numPoints,
IPoint controlPoints)
throws IOException,
AutomationException
It is recommended that the IBezierCurveGEN::PutCoords OLE Automation compliant version of this method be used instead of this version.
Use PutCoord to set a single control point.
numPoints - The numPoints (in)controlPoints - A reference to a com.esri.arcgis.geometry.IPoint (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void queryCoord(int index,
IPoint controlPoint)
throws IOException,
AutomationException
Use QueryCoord to obtain a specific bezier control Point. Any of the four bezier control points (0 to 3) can be queried.
Use QueryCoords to get all of the control points.
index - The index (in)controlPoint - A reference to a com.esri.arcgis.geometry.IPoint (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void putCoord(int index,
IPoint controlPoint)
throws IOException,
AutomationException
Places a specific control Point into a bezier curve. Control point 0 is the FromPoint of the Bezier curve (also the From tangent's FromPoint), control point 1 is the From tangent's ToPoint, control point 2 is the To tangent's FromPoint, and control point 3 is the ToPoint of the Bezier curve (also the To tangent's ToPoint).
Use PutCoords to set all control points simultaneously. PutCoord should not be use to create a new BezierCurve, use PutCoords instead. PutCoord should only be use to modify an existing and well define BezierCurve.
index - The index (in)controlPoint - A reference to a com.esri.arcgis.geometry.IPoint (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IPoint
int getDegree()
throws IOException,
AutomationException
Returns the degree of the Bezier Curve. Currently, all Bezier Curves have a degree of 3 by definition.
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void queryChordLengthTangentAtFrom(IPoint tangent,
boolean[] setByUser)
throws IOException,
AutomationException
Returns the ChordLength Tangent at the From Point of the BezierCurve along with a flag indicating whether this ChordLength Tangent was set by the user or defined from Control Points. The ChordLength Tangent is not the same as the internal Control Points or the Tangent at the From Point although both lie on the same line. The coordinates of the returned point are in reality a Dx and Dy which can be added to the From point in order to get the tangent.
tangent - A reference to a com.esri.arcgis.geometry.IPoint (in)setByUser - The setByUser (in/out: use single element array)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void queryChordLengthTangentAtTo(IPoint tangent,
boolean[] setByUser)
throws IOException,
AutomationException
Returns the ChordLength Tangent at the To Point of the BezierCurve along with a flag indicating whether this ChordLength Tangent was set by the user or defined from Control Points. The ChordLength Tangent is not the same as the internal Control Points or the Tangent at the To Point although both lie on the same line. The coordinates of the returned point are in reality a Dx and Dy which can be added to the To point in order to get the tangent.
tangent - A reference to a com.esri.arcgis.geometry.IPoint (in)setByUser - The setByUser (in/out: use single element array)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void setChordLengthTangentAtFrom(IPoint tangent,
boolean setByUser)
throws IOException,
AutomationException
Sets the ChordLength Tangent at the From Point of the BezierCurve. The ChordLength Tangent is not the same as the internal Control Points or the Tangent at the From Point although both lie on the same line.
tangent - A reference to a com.esri.arcgis.geometry.IPoint (in)setByUser - The setByUser (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void setChordLengthTangentAtTo(IPoint tangent,
boolean setByUser)
throws IOException,
AutomationException
Sets the ChordLength Tangent at the To Point of the BezierCurve. The ChordLength Tangent is not the same as the internal Control Points or the Tangent at the To Point although both lie on the same line.
tangent - A reference to a com.esri.arcgis.geometry.IPoint (in)setByUser - The setByUser (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
void queryInflectionPoint(IPoint inflectionPoint)
throws IOException,
AutomationException
Returns the first Inflection Point of the Bezier Curve, or returns an Empty Point if no Inflection Point Exists. An Inflection Point occurs where the sign of the Curvature changes.
Most Bezier Curves have 0 or 1 Inflection Points, but a few constructions result in Bezier Curves with 2 Inflection Points. For these Bezier Curve, the only way to find both Inflection Points is to Reverse the Orientation of the Bezier Curve and call QueryInflectionPoint a second time. If the Inflection Points are not equal, the Bezier Curve has two Inflection Points, otherwise, it only has a single Inflection Point.
inflectionPoint - A reference to a com.esri.arcgis.geometry.IPoint (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
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