com.luciad.shape

LuciadLightspeedInterface ILcdCircularArcBy3Points

All Superinterfaces:

Cloneable, ILcdBounded, ILcdCircularArc, ILcdCloneable, ILcdCurve, ILcdShape, Serializable

All Known Subinterfaces:

ILcd2DEditableCircularArcBy3Points

All Known Implementing Classes:

TLcdGML31Arc, TLcdGML31Circle, TLcdGML32Arc, TLcdGML32Circle, TLcdLonLatCircularArcBy3Points, TLcdXYCircularArcBy3Points

public interface ILcdCircularArcBy3Points
extends ILcdCircularArc

A circular arc that is defined by a start point, end point, and a third point on the arc.

The following image clarifies the properties of a circular arc-by-3-points. The arc is represented in black and the start, intermediate and end points in red.

A circular arc-by-3-points where the start, end and intermediate point coincide represents an arc on a circle with these points as its center and a radius of 0. The start angle and arc angle are undefined in this case.

A circular arc-by-3-points where 2 out of 3 points coincide represents an arc on a circle with its center located in the middle between the 2 coinciding points and the other point. The radius of this circle is determined as in the case with 3 different points (the distance between the center and the 3 points).The start angle and arc angle are undefined in this case.

Since:

9.0

Field Summary

Fields inherited from interface com.luciad.shape.ILcdCurve

INTERPOLATION_CIRCLE_BY_3POINTS, INTERPOLATION_CIRCLE_BY_CENTERPOINT, INTERPOLATION_CIRCULARARC_BY_3POINTS, INTERPOLATION_CIRCULARARC_BY_BULGE, INTERPOLATION_CIRCULARARC_BY_CENTERPOINT, INTERPOLATION_ELLIPTICAL, INTERPOLATION_GEODESIC, INTERPOLATION_LINEAR, INTERPOLATION_MIXED, INTERPOLATION_RHUMB

Method Summary

Modifier and Type	Method and Description
ILcdPoint	getIntermediatePoint() Returns an intermediate point of this arc.
String	getInterpolation() Returns the interpolation method used by this curve, which is ILcdCurve.INTERPOLATION_CIRCULARARC_BY_3POINTS.

Methods inherited from interface com.luciad.shape.ILcdCircularArc

getArcAngle, getCenter, getRadius, getStartAngle

Methods inherited from interface com.luciad.shape.ILcdCurve

computePointSFCT, getEndPoint, getEndTangent2D, getLength2D, getLineSegmentIntersectionCount, getStartPoint, getStartTangent2D, getTangent2D

Methods inherited from interface com.luciad.shape.ILcdShape

contains2D, contains2D, contains3D, contains3D, getFocusPoint

Methods inherited from interface com.luciad.shape.ILcdBounded

getBounds

Methods inherited from interface com.luciad.util.ILcdCloneable

clone

Method Detail

getIntermediatePoint

ILcdPoint getIntermediatePoint()

Returns an intermediate point of this arc.

Returns:

an intermediate point of this arc.

getInterpolation

String getInterpolation()

Returns the interpolation method used by this curve, which is ILcdCurve.INTERPOLATION_CIRCULARARC_BY_3POINTS.

Specified by:

getInterpolation in interface ILcdCircularArc

Specified by:

getInterpolation in interface ILcdCurve

Returns:

the interpolation method used by this curve, which is INTERPOLATION_CIRCULARARC_BY_3POINTS.