Interface ILcdCircularArcByBulge
 All Superinterfaces:
Cloneable
,ILcdBounded
,ILcdCircularArc
,ILcdCloneable
,ILcdCurve
,ILcdShape
,Serializable
 All Known Subinterfaces:
ILcd2DEditableCircularArcByBulge
 All Known Implementing Classes:
TLcdGML31ArcByBulge
,TLcdGML32ArcByBulge
,TLcdLonLatCircularArcByBulge
,TLcdXYCircularArcByBulge
More specifically, consider the chord between start and end point (dashed line between S and E in the picture), with a point C in the middle of it. The midpoint M of the arc is located on a line that starts from C and is oriented along the normal. The bulge factor is the ratio of the distance of MC and SC. The sign of the bulge indicates whether the midpoint is on the left side (positive, as in the picture) or right side (negative) of the vector from start to end point.
The following image clarifies the properties of a circular arcbybulge. The arc is represented in black, the start, end and mid points in red and the chord and line from the mid point to the chord in grey.
A circular arcbybulge where the start and end 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.
 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 TypeMethodDescriptiondouble
getBulge()
Returns the bulge factor of this arc.Returns the interpolation method used by this curve, which isILcdCurve.INTERPOLATION_CIRCULARARC_BY_BULGE
.Methods inherited from interface com.luciad.shape.ILcdBounded
getBounds
Methods inherited from interface com.luciad.shape.ILcdCircularArc
getArcAngle, getCenter, getRadius, getStartAngle
Methods inherited from interface com.luciad.util.ILcdCloneable
clone
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

Method Details

getBulge
double getBulge()Returns the bulge factor of this arc. The bulge factor is the ratio of (1) the distance between the arc midpoint and the center of the arc's chord, and (2) half the length of the arc's chord. The sign of the bulge indicates whether the midpoint is on the left side (positive) or right side (negative) of the vector from start to end point. So a bulge factor with an absolute value of 1 means a halfcircle, smaller than 1 means a less bulging arc and larger than 1 means an arc that bulges out in the start and end point. Returns:
 the bulge factor of this arc.

getInterpolation
String getInterpolation()Returns the interpolation method used by this curve, which isILcdCurve.INTERPOLATION_CIRCULARARC_BY_BULGE
. Specified by:
getInterpolation
in interfaceILcdCircularArc
 Specified by:
getInterpolation
in interfaceILcdCurve
 Returns:
 the interpolation method used by this curve,
which is
INTERPOLATION_CIRCULARARC_BY_BULGE
.
