jfig.objects
Class FigBezier

java.lang.Object
  jfig.objects.FigPolyline
      jfig.objects.FigBezier

All Implemented Interfaces:

FigDrawable, FigObject

public class FigBezier

extends FigPolyline

Bezier-style interpolated spline objects.

Class FigBezier represents Bezier-styde splines, either open or closed. It supports all standard FIG line attributes, including arrows.

Part of the code for FigBezier was translated directly from the xfig (version 3.1.3) code of w_intspline.c and u_draw.c. That part of the code is protected by the following copyright conditions: FIG : Facility for Interactive Generation of figures Copyright (c) 1985 by Supoj Sutanthavibul Parts Copyright (c) 1994 by Brian V. Smith Parts Copyright (c) 1991 by Paul King Copyright (c) 1996 by Norman F. Hendrich, Univ. of Hamburg Part of the following code was translated directly from the xfig (version 3.1.3) code of w_intspline.c and u_draw.c. That part of the code is protected by the following copyright conditions: FIG : Facility for Interactive Generation of figures Copyright (c) 1985 by Supoj Sutanthavibul Parts Copyright (c) 1994 by Brian V. Smith Parts Copyright (c) 1991 by Paul King The X Consortium, and any party obtaining a copy of these files from the X Consortium, directly or indirectly, is granted, free of charge, a full and unrestricted irrevocable, world-wide, paid up, royalty-free, nonexclusive right and license to deal in this software and documentation files (the "Software"), including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons who receive copies from any such party to do so, with the only requirement being that this copyright notice remain intact. This license includes without limitation a license to do the foregoing actions under any patents of the party supplying this software to the X Consortium.

Nested Class Summary

class

FigBezier.ControlPoint ControlPoint: a simple wrapper with double coordinates fields lx, ly, rx, ry.

Field Summary

(package private) double	_1dSQR2
(package private) double	_2xPI
(package private) double	_SQR2
(package private) FigBezier.ControlPoint[]	cpp
(package private) int	ii
(package private) double	M_PI_2
(package private) static java.awt.Point[]	pp
(package private) static int	PPMAX
(package private) double[][]	stack
(package private) int	stack_p
(package private) double	T
(package private) java.awt.Point[]	wcp_spline
(package private) java.awt.Point[]	wcp1

Fields inherited from class jfig.objects.FigPolyline

attribs, bbox, comment, debug, is_closed, min_i, min_num_points, painter, renderer, selected, showPoints, syncRedrawFlag, trafo, visible, wcp

Constructor Summary

FigBezier(int x0, int y0, boolean is_closed, FigAttribs attribs, FigTrafo2D trafo)

Method Summary

FigObject	copy() build a copy of this FigPolyline.
void	createRenderer()
double[]	getControlPoints() return a list of double values representing the control points (required for the FIG3.1 file format).
java.awt.Point[]	getSplinePoints()
void	rebuild() rebuild() re-calculates the bezier spline.
(package private) int	round(double x)
(package private) void	set_control_point(double x, double y, double l1, double l2, double theta1, double theta2, double t, FigBezier.ControlPoint cp) set one control point cp.
java.lang.String	toString() toString() for debug purposes.

Methods inherited from class jfig.objects.FigPolyline

appendPoint, calc_dist, canRotate, deletePoint, deselect, get_min_dist_index, get_sc_bbox, getAttributes, getBbox, getComment, getLayer, getMinDistPoint1, getMinDistPoint2, getMinPerpendicularDistance, getMinPerpendicularDistance, getMovePointNeighbors, getNearestPoint, getNeighborPoints, getObjectPainter, getPoints, getPosition, getSegmentDistance, getSyncRedrawFlag, getText, getTrafo, indexOfNearestNeighbor, initialize, insertPoint, isClosed, isSelected, isShowPoints, isVisible, isVisible, keyPressed, manhattan, message, minDistance, minDistanceEuclid, mirrorX, mirrorY, move, movePoint, nearerPoint, numPoints, paint, paint, paintSave, printCost, reset_debug, rotate, scale, select, set_debug, setArrowMode, setAttributes, setBackwardArrow, setComment, setFillColor, setFillStyle, setForwardArrow, setIsClosed, setLayer, setLineColor, setLineStyle, setLineWidth, setObjectPainter, setPoints, setSyncRedrawFlag, setText, setTrafo, setVisible, showPoints, supportsPointOps, update_bbox, update, updateAttributes, writeAsResource

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

wcp_spline

java.awt.Point[] wcp_spline

wcp1

java.awt.Point[] wcp1

cpp

FigBezier.ControlPoint[] cpp

PPMAX

static final int PPMAX

See Also:

Constant Field Values

pp

static java.awt.Point[] pp

ii

int ii

stack

double[][] stack

stack_p

int stack_p

T

final double T

See Also:

Constant Field Values

_2xPI

final double _2xPI

See Also:

Constant Field Values

_1dSQR2

final double _1dSQR2

See Also:

Constant Field Values

_SQR2

final double _SQR2

See Also:

Constant Field Values

M_PI_2

final double M_PI_2

See Also:

Constant Field Values

Constructor Detail

FigBezier

public FigBezier(int x0,
                 int y0,
                 boolean is_closed,
                 FigAttribs attribs,
                 FigTrafo2D trafo)

Method Detail

createRenderer

public void createRenderer()

Overrides:

createRenderer in class FigPolyline

round

final int round(double x)

getControlPoints

public double[] getControlPoints()

return a list of double values representing the control points (required for the FIG3.1 file format). The values are cpp[0](lx,ly,rx,ry), cpp[1](lx,ly,rx,ry) ...

getSplinePoints

public java.awt.Point[] getSplinePoints()

toString

public java.lang.String toString()

Description copied from class: FigPolyline

toString() for debug purposes.

Specified by:

toString in interface FigObject

Overrides:

toString in class FigPolyline

set_control_point

void set_control_point(double x,
                       double y,
                       double l1,
                       double l2,
                       double theta1,
                       double theta2,
                       double t,
                       FigBezier.ControlPoint cp)

set one control point cp. The parameter t is the tension in the interval 0 (no tension) .. 1 (high tension).

rebuild

public void rebuild()

rebuild() re-calculates the bezier spline.

Specified by:

rebuild in interface FigObject

Overrides:

rebuild in class FigPolyline

copy

public FigObject copy()

build a copy of this FigPolyline.

Specified by:

copy in interface FigObject

Overrides:

copy in class FigPolyline