public interface Arc extends Curve
This interface is equivalent to the GM_Arc specified in ISO 19107. A Arc is defined by 3 points, and consists of the arc of the circle determined by the 3 points, starting at the first, passing through the second and terminating at the third. If the 3 points are co-linear, then the arc shall be a 3-point line string, and will not be able to return values for center, radius, start angle and end angle.
Geometry.DIMENSIONS, Geometry.OPERATIONS, Geometry.SUBTYPES, Geometry.TYPES, Geometry.ValidationStatusBEST, E, EXTENDED_GEOMSUBTYPE_OFFSET, EXTENDED_GEOMTYPE_OFFSET, N, NE, NW, S, SE, SELECTHANDLER, STRETCHINGHANDLER, SW, W| Modifier and Type | Method and Description |
|---|---|
Point |
getCenterPoint()
Return the center of the arc, that is, the center of the ellipse/circle
in which the arc is based.
|
double |
getEndAngle()
Returns the counterclockwise angle formed by the horizontal line passing
through the center, the center itself and the ending point.
|
Point |
getEndPoint()
Return the end point that has been used to create the arc.
|
Point |
getInitPoint()
Return the first point that has been used to create the arc.
|
Point |
getMiddlePoint()
Return the middle point of the arc.
|
double |
getStartAngle()
Returns the counterclockwise angle formed by the horizontal line passing
through the center, the center itself and the starting point.
|
void |
setPoints(Point center,
double radius,
double startAngle,
double angleExt)
Sets the values to define an arc.
|
void |
setPoints(Point startPoint,
Point midPoint,
Point endPoint)
Sets the three points to define an arc.
|
void |
setPointsStartEnd(Point center,
double radius,
double startAngle,
double endAngle)
Sets the values to define an arc.
|
void |
setPointsStartExt(Point center,
double radius,
double startAngle,
double angleExt)
Sets the values to define an arc.
|
addMoveToVertex, addVertex, addVertex, addVertex, closePrimitive, ensureCapacity, getCoordinateAt, getNumVertices, getVertex, insertVertex, removeVertex, setCoordinateAt, setGeneralPath, setVertexarea, buffer, canBeReprojected, canBeTransformed, centroid, cloneGeometry, closestPoints, contains, convertToEWKB, convertToEWKB, convertToEWKBForcingType, convertToWKB, convertToWKB, convertToWKBForcingType, convertToWKT, convexHull, coveredBy, covers, crosses, difference, disjoint, distance, ensureOrientation, fastIntersects, flip, getBounds2D, getDimension, getEnvelope, getGeneralPath, getGeometryType, getHandlers, getInteriorPoint, getInternalShape, getPathIterator, getPathIterator, getShape, getShape, getType, getValidationStatus, intersection, intersects, intersects, invokeOperation, invokeOperation, isCCW, isSimple, isValid, isWithinDistance, makeValid, move, offset, out, overlaps, perimeter, reProject, rotate, scale, snapTo, toLines, toPoints, toPolygons, touches, transform, union, withincontains, contains, contains, contains, getBounds, intersectscompareTovoid setPoints(Point startPoint, Point midPoint, Point endPoint)
startPoint - The start point of an arc.midPoint - The middle point of an arc.endPoint - The end point of an arc.IllegalArgumentException - if the three points are aligned or
there is a repeated point.void setPoints(Point center, double radius, double startAngle, double angleExt)
center - The center of the arc.radius - The radius.startAngle - The start angle of the arc (in radians)angleExt - The angular extent of the arc (in radians).
The sign convention is:
startAngle = 0 is "3 o'clock";
startAngle = (PI / 3) is "1 o'clock";
angleExt > 0 means "advancing clockwise";
angleExt < 0 means "advancing counterclockwise".void setPointsStartExt(Point center, double radius, double startAngle, double angleExt)
center - The center of the arc.radius - The radius.startAngle - The start angle of the arc (in radians)angleExt - The angular extent of the arc (in radians).
The sign convention is:
startAngle = 0 is "3 o'clock";
startAngle = (PI / 3) is "1 o'clock";
angleExt > 0 means "advancing clockwise";
angleExt < 0 means "advancing counterclockwise".void setPointsStartEnd(Point center, double radius, double startAngle, double endAngle)
center - The center of the arc.radius - The radius.startAngle - The start angle of the arc (in radians)endAngle - The end angle of the arc (in radians).Point getInitPoint()
Point getEndPoint()
Point getCenterPoint()
Point getMiddlePoint()
double getStartAngle()
throws GeometryOperationNotSupportedException,
GeometryOperationException
GeometryOperationNotSupportedExceptionGeometryOperationExceptiondouble getEndAngle()
throws GeometryOperationNotSupportedException,
GeometryOperationException
GeometryOperationNotSupportedExceptionGeometryOperationException