com.kitfox.svg.pathcmd
Class Arc
java.lang.Object
com.kitfox.svg.pathcmd.PathCommand
com.kitfox.svg.pathcmd.Arc
public class Arc
- extends PathCommand
This is a little used SVG function, as most editors will save curves as
Beziers. To reduce the need to rely on the Batik library, this functionallity
is being bypassed for the time being. In the future, it would be nice to
extend the GeneralPath command to include the arcTo ability provided by Batik.
- Author:
- Mark McKay, Mark McKay
Constructor Summary |
Arc()
Creates a new instance of MoveTo |
Arc(boolean isRelative,
float rx,
float ry,
float xAxisRot,
boolean largeArc,
boolean sweep,
float x,
float y)
|
Method Summary |
void |
appendPath(java.awt.geom.GeneralPath path,
BuildHistory hist)
|
void |
arcTo(java.awt.geom.GeneralPath path,
float rx,
float ry,
float angle,
boolean largeArcFlag,
boolean sweepFlag,
float x,
float y,
float x0,
float y0)
Adds an elliptical arc, defined by two radii, an angle from the
x-axis, a flag to choose the large arc or not, a flag to
indicate if we increase or decrease the angles and the final
point of the arc. |
static java.awt.geom.Arc2D |
computeArc(double x0,
double y0,
double rx,
double ry,
double angle,
boolean largeArcFlag,
boolean sweepFlag,
double x,
double y)
This constructs an unrotated Arc2D from the SVG specification of an
Elliptical arc. |
int |
getNumKnotsAdded()
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
rx
public float rx
ry
public float ry
xAxisRot
public float xAxisRot
largeArc
public boolean largeArc
sweep
public boolean sweep
x
public float x
y
public float y
Arc
public Arc()
- Creates a new instance of MoveTo
Arc
public Arc(boolean isRelative,
float rx,
float ry,
float xAxisRot,
boolean largeArc,
boolean sweep,
float x,
float y)
appendPath
public void appendPath(java.awt.geom.GeneralPath path,
BuildHistory hist)
- Specified by:
appendPath
in class PathCommand
getNumKnotsAdded
public int getNumKnotsAdded()
- Specified by:
getNumKnotsAdded
in class PathCommand
arcTo
public void arcTo(java.awt.geom.GeneralPath path,
float rx,
float ry,
float angle,
boolean largeArcFlag,
boolean sweepFlag,
float x,
float y,
float x0,
float y0)
- Adds an elliptical arc, defined by two radii, an angle from the
x-axis, a flag to choose the large arc or not, a flag to
indicate if we increase or decrease the angles and the final
point of the arc.
- Parameters:
rx
- the x radius of the ellipsery
- the y radius of the ellipseangle
- the angle from the x-axis of the current
coordinate system to the x-axis of the ellipse in degrees.largeArcFlag
- the large arc flag. If true the arc
spanning less than or equal to 180 degrees is chosen, otherwise
the arc spanning greater than 180 degrees is chosensweepFlag
- the sweep flag. If true the line joining
center to arc sweeps through decreasing angles otherwise it
sweeps through increasing anglesx
- the absolute x coordinate of the final point of the arc.y
- the absolute y coordinate of the final point of the arc.x0
- - The absolute x coordinate of the initial point of the arc.y0
- - The absolute y coordinate of the initial point of the arc.
computeArc
public static java.awt.geom.Arc2D computeArc(double x0,
double y0,
double rx,
double ry,
double angle,
boolean largeArcFlag,
boolean sweepFlag,
double x,
double y)
- This constructs an unrotated Arc2D from the SVG specification of an
Elliptical arc. To get the final arc you need to apply a rotation
transform such as:
AffineTransform.getRotateInstance
(angle, arc.getX()+arc.getWidth()/2, arc.getY()+arc.getHeight()/2);