- All Superinterfaces:
- Comparable, Geometry, OrientableCurve, OrientablePrimitive, Primitive, Serializable, Shape
- All Known Subinterfaces:
- Arc, Spline
- All Known Implementing Classes:
- Arc2D, Arc2DZ, Curve2D, Curve2DZ, DefaultCurve, EllipticArc2D, EllipticArc2DZ, Spline2D, Spline2DZ
public interface Curve
- extends OrientableCurve
This interface is equivalent to the GM_Curve and the GM_CurveSegment specified in
Curve is a descendent subtype of
It is the basis for 1-dimensional geometry.
A curve is a continuous image of an open interval
and so could be written as a parameterized function such as c(t):(a, b) -> E^n where "t" is a real
parameter and E^n is Euclidean space of dimension n (usually 2 or 3, as determined by
the coordinate reference system). Any other parameterization that results in the same image curve,
traced in the same direction, such as any linear shifts and positive scales such as
e(t) = c(a + t(b-a)):(0,1) -> E^n, is an equivalent representation of the same curve.
Curves are continuous, connected, and have a measurable length in terms of
the coordinate system. The orientation of the curve is determined by this
parameterization, and is consistent with the tangent function, which
approximates the derivative function of the parameterization and shall
always point in the "forward" direction. The parameterization of the reversal of
the curve defined by c(t):(a, b) -> E^n would be defined by a function of the
form s(t) = c(a + b - t):(a, b) - >E^n.
In the ISO model a curve is composed of one or more curve segments.
In gvSIG a curve is not composed by curve segments: a curve is
one and only one curve segment.
- Jorge Piera
- See Also:
- ISO 19107
|Fields inherited from interface org.gvsig.fmap.geom.Geometry
BEST, E, EXTENDED_GEOMSUBTYPE_OFFSET, EXTENDED_GEOMTYPE_OFFSET, N, NE, NW, S, SE, SELECTHANDLER, STRETCHINGHANDLER, SW, W
Sets the initial point and the end point of the curve.
|Methods inherited from interface org.gvsig.fmap.geom.primitive.OrientablePrimitive
addMoveToVertex, addVertex, addVertexes, closePrimitive, getCoordinateAt, getNumVertices, getVertex, insertVertex, removeVertex, setCoordinateAt, setGeneralPath, setVertex
|Methods inherited from interface org.gvsig.fmap.geom.Geometry
area, buffer, centroid, cloneGeometry, contains, convertToWKB, convertToWKT, convexHull, coveredBy, crosses, difference, disjoint, distance, fastIntersects, getBounds2D, getDimension, getEnvelope, getGeneralPath, getGeometryType, getHandlers, getInternalShape, getPathIterator, getPathIterator, getShape, getShape, getType, intersection, intersects, intersects, invokeOperation, invokeOperation, isSimple, overlaps, perimeter, reProject, touches, transform, union, within
void setPoints(Point initialPoint,
- Sets the initial point and the end point of the curve. On this case,
the curve is a single line
initialPoint - The initial point
endPoint - The end point
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