Module org.jhotdraw8.geom

Package org.jhotdraw8.geom.biarc

Class ArcToCubicCurve

java.lang.Object

org.jhotdraw8.geom.biarc.ArcToCubicCurve

public class ArcToCubicCurve
extends Object

Method Summary

Modifier and Type	Method	Description
static void	arcTo(double lastX, double lastY, double radiusX, double radiusY, double xAxisRotation, double x, double y, boolean largeArcFlag, boolean sweepFlag, DoubleConsumer2 lineTo, DoubleConsumer6 curveTo)	Converts an arcTo into a sequence of curveTo, or - if the arcTo is degenerate - to a lineTo or to nothing.

Methods inherited from class java.lang.Object

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

Method Details

arcTo

public static void arcTo(double lastX,
 double lastY,
 double radiusX,
 double radiusY,
 double xAxisRotation,
 double x,
 double y,
 boolean largeArcFlag,
 boolean sweepFlag,
 DoubleConsumer2 lineTo,
 DoubleConsumer6 curveTo)

Converts an arcTo into a sequence of curveTo, or - if the arcTo is degenerate - to a lineTo or to nothing.

As specified in w3.org

This code has been derived from svgpath library [1].

See math.stackexchange.com for a discussion on how to calculate control points of cubic bezier curve approximating a part of a circle.

References:

[1] svgpath library

svgpath. Copyright (C) 2013-2015 by Vitaly Puzrin, MIT License. github.com

Parameters:

lastX - the last x coordinate

lastY - the last y coordinate

radiusX - the x radius of the arc

radiusY - the y radius of the arc

xAxisRotation - the x-axis rotation of the arc in degrees

x - the x to coordinate

y - the y to coordinate

largeArcFlag - the large-arc flag

sweepFlag - the sweep-arc flag

lineTo - the consumer for lineTo (can be called 0 to 1 times

curveTo - the consumer for curveTo (can be called 0 to 4 times)