math.geom2d.curve
Interface ContinuousCurve2D

All Superinterfaces:

Curve2D, java.awt.Shape, Shape2D

All Known Subinterfaces:

ContinuousBoundary2D, ContinuousOrientedCurve2D, SmoothCurve2D, SmoothOrientedCurve2D

All Known Implementing Classes:

BezierCurve2D, BoundaryPolyCurve2D, Circle2D, CircleArc2D, ClosedPolyline2D, Ellipse2D, EllipseArc2D, HyperbolaBranch2D, HyperbolaBranchArc2D, LineArc2D, LineObject2D, LineSegment2D, Parabola2D, ParabolaArc2D, PolyBezierCurve2D, PolyCurve2D, Polyline2D, PolyOrientedCurve2D, Ray2D, StraightLine2D, StraightObject2D

public interface ContinuousCurve2D
extends Curve2D

Interface for all curves which can be drawn with one stroke. This includes closed curves (ellipses, polygon boundaries...), infinite curves (straight lines, parabolas, ...), and 'finite' curves, such as polylines, conic arcs, line segments, splines... Note that an hyperbola is compound of 2 continuous curves.

Such curves accept parametric representation, in the form : p(t)={x(t),y(t)}, with t contained in appropriate domain. Bounds of domain of definition can be obtained by methods getT0() and getT1().

Field Summary

static int	CIRCLE
static int	CLOSED_EDGE constant for curves topologically equivalent to a closed edge.
static int	LOOP Constant for curves topologically equivalent to a circle.
static int	OPEN_EDGE Constant for curves topologically equivalent to an open edge.

Fields inherited from interface math.geom2d.Shape2D

ACCURACY, defaultClipWindow, EMPTY_SET

Method Summary

java.awt.geom.GeneralPath	appendPath(java.awt.geom.GeneralPath path) Append the path of the curve to the given path.
CurveSet2D<? extends ContinuousCurve2D>	clip(Box2D box) When a curve is clipped, the result is a set of curves.
Polyline2D	getAsPolyline(int n) Returns an approximation of the curve as a polyline with n line segments.
ContinuousCurve2D	getReverseCurve() Returns the curve with same trace on the plane with parametrization in reverse order.
java.util.Collection<? extends SmoothCurve2D>	getSmoothPieces() Returns a set of smooth curves.
ContinuousCurve2D	getSubCurve(double t0, double t1) Returns a portion of the original curve, delimited by two positions on the curve.
boolean	isClosed() Return true if the curve makes a loop, that is come back to starting point after covering the path.
ContinuousCurve2D	transform(AffineTransform2D trans) Transforms the curve by an affine transform.

Methods inherited from interface math.geom2d.curve.Curve2D

getContinuousCurves, getFirstPoint, getIntersections, getLastPoint, getPoint, getPoint, getPosition, getT0, getT1, project

Methods inherited from interface math.geom2d.Shape2D

getBoundingBox, getDistance, getDistance, isBounded

Methods inherited from interface java.awt.Shape

contains, contains, contains, contains, getBounds, getBounds2D, getPathIterator, getPathIterator, intersects, intersects

Field Detail

CLOSED_EDGE

static final int CLOSED_EDGE

constant for curves topologically equivalent to a closed edge. This is the case for line segment, conic finite arcs, circle or ellipse arcs, Bezize Curves...

See Also:

Constant Field Values

OPEN_EDGE

static final int OPEN_EDGE

Constant for curves topologically equivalent to an open edge. For example, straight lines, parabolas, or hyperbolas.

See Also:

Constant Field Values

LOOP

static final int LOOP

Constant for curves topologically equivalent to a circle. This includes circles, ellipses, simple polygon boundaries.

See Also:

Constant Field Values

CIRCLE

static final int CIRCLE

See Also:

Constant Field Values

Method Detail

isClosed

boolean isClosed()

Return true if the curve makes a loop, that is come back to starting point after covering the path.

getSmoothPieces

java.util.Collection<? extends SmoothCurve2D> getSmoothPieces()

Returns a set of smooth curves.

getAsPolyline

Polyline2D getAsPolyline(int n)

Returns an approximation of the curve as a polyline with n line segments. If the curve is closed, the method should return an instance of ClosedPolyline2D.

Parameters:

n - the number of line segments

Returns:

a closed polyline with n line segments.

appendPath

java.awt.geom.GeneralPath appendPath(java.awt.geom.GeneralPath path)

Append the path of the curve to the given path.

Parameters:

path - a path to modify

Returns:

the modified path

getReverseCurve

ContinuousCurve2D getReverseCurve()

Description copied from interface: Curve2D

Returns the curve with same trace on the plane with parametrization in reverse order.

Specified by:

getReverseCurve in interface Curve2D

getSubCurve

ContinuousCurve2D getSubCurve(double t0,
                              double t1)

Description copied from interface: Curve2D

Returns a portion of the original curve, delimited by two positions on the curve.

Specified by:

getSubCurve in interface Curve2D

Parameters:

t0 - position of the start of the sub-curve

t1 - position of the end of the sub-curve

Returns:

the portion of original curve comprised between t0 and t1.

clip

CurveSet2D<? extends ContinuousCurve2D> clip(Box2D box)

Description copied from interface: Curve2D

When a curve is clipped, the result is a set of curves.

Specified by:

clip in interface Curve2D

Specified by:

clip in interface Shape2D

Parameters:

box - the clipping box

Returns:

the clipped shape

transform

ContinuousCurve2D transform(AffineTransform2D trans)

Description copied from interface: Curve2D

Transforms the curve by an affine transform. The result is an instance of Curve2D.

Specified by:

transform in interface Curve2D

Specified by:

transform in interface Shape2D

Parameters:

trans - an affine transform

Returns:

the transformed shape