ArcGIS Enterprise SDK

IBezierCurve Interface

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.

Name |
Description | |
---|---|---|

Degree | The degree of the Bezier curve. For third degree Beziers, this is always 3. | |

Dimension | The topological dimension of this geometry. | |

Envelope | Creates a copy of this geometry's envelope and returns it. | |

FromPoint | The 'from' point of the curve. | |

GeometryType | The type of this geometry. | |

GeoNormalize | Shifts longitudes, if need be, into a continuous range of 360 degrees. | |

GeoNormalizeFromLongitude | Normalizes longitudes into a continuous range containing the longitude. This method is obsolete. | |

GetSubcurve | Extracts a portion of this curve into a new curve. | |

IsClosed | Indicates if 'from' and 'to' points (of each part) are identical. | |

IsEmpty | Indicates whether this geometry contains any points. | |

Length | The length of the curve. | |

Project | Projects this geometry into a new spatial reference. | |

PutCoord | Sets the specified (0 <= index < 4) control point of this Bezier curve. | |

PutCoords | Sets this Bezier curve's control points from an array of between 1 to 4 input points. | |

PutWKSCoords | Sets this Bezier curve's control points from the array of 4 input point structures. | |

QueryChordLengthTangentAtFrom | Returns tangent vector at 'from' point, based on chord length parametrization; and whether it has been set by user or by smoothing process. | |

QueryChordLengthTangentAtTo | Returns tangent vector at 'to' point, based on chord length parametrization; and whether it has been set by user or by smoothing process. | |

QueryCoord | Copies the specified control point of this Bezier curve into the input point. | |

QueryCoords | Copies this Bezier curve's control points into the array of 4 existing points. | |

QueryEnvelope | Copies this geometry's envelope properties into the specified envelope. | |

QueryFromPoint | Copies this curve's 'from' point to the input point. | |

QueryInflectionPoint | Finds inflection point; sets it empty if none exists. | |

QueryNormal | Constructs a line normal to a curve from a point at a specified distance along the curve. | |

QueryPoint | Copies to outPoint the properties of a point on the curve at a specified distance from the beginning of the curve. | |

QueryPointAndDistance | Finds the point on the curve closest to inPoint, then copies that point to outPoint; optionally calculates related items. | |

QueryTangent | Constructs a line tangent to a curve from a point at a specified distance along the curve. | |

QueryToPoint | Copies the curve's 'to' point into the input point. | |

QueryWKSCoords | Copies this Bezier curve's control points into the array of 4 existing point structures. | |

ReverseOrientation | Reverses the parameterization of the curve ('from' point becomes 'to' point, first segment becomes last segment, etc). | |

SetChordLengthTangentAtFrom | 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. | |

SetChordLengthTangentAtTo | 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. | |

SetEmpty | Removes all points from this geometry. | |

SnapToSpatialReference | Moves points of this geometry so that they can be represented in the precision of the geometry's associated spatial reference system. | |

SpatialReference | The spatial reference associated with this geometry. | |

ToPoint | The 'to' point of the curve. |

Interfaces | Description |
---|---|

ICurve | Provides access to properties and methods of all 1 dimensional curves (polylines, segments, boundaries of polygons, etc.). |

IGeometry | Provides access to members that describe properties and behavior of all geometric objects. |

Classes | Description |
---|---|

BezierCurve | A cubic Bezier curve defined between two points; optionally has measure, height and ID attributes at each endpoint. |