org.apache.poi.sl.draw.geom

Class ArcToCommand

java.lang.Object

org.apache.poi.sl.draw.geom.ArcToCommand

All Implemented Interfaces:

PathCommand

public class ArcToCommand
extends java.lang.Object
implements PathCommand

ArcTo command within a shape path in DrawingML: <arcTo wR="wr" hR="hr" stAng="stAng" swAng="swAng"/>

Where wr and wh are the height and width radiuses of the supposed circle being used to draw the arc. This gives the circle a total height of (2 * hR) and a total width of (2 * wR) stAng is the start angle and swAng is the swing angle

Method Summary

Modifier and Type	Method and Description
static double	convertOoxml2AwtAngle(double ooAngle, double width, double height) Arc2D angles are skewed, OOXML aren't ...
void	execute(java.awt.geom.Path2D.Double path, Context ctx) Execute the command an append a segment to the specified path

Methods inherited from class java.lang.Object

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

Method Detail

execute

public void execute(java.awt.geom.Path2D.Double path,
                    Context ctx)

Description copied from interface: PathCommand

Execute the command an append a segment to the specified path

Specified by:

execute in interface PathCommand

Parameters:

path - the path to append the result to

ctx - the context to lookup variables

convertOoxml2AwtAngle

@Internal
public static double convertOoxml2AwtAngle(double ooAngle,
                                                     double width,
                                                     double height)

Arc2D angles are skewed, OOXML aren't ... so we need to unskew them

Furthermore ooxml angle starts at the X-axis and increases clock-wise, where as Arc2D api states "45 degrees always falls on the line from the center of the ellipse to the upper right corner of the framing rectangle" so we need to reverse it

 AWT:                      OOXML:
            |90/-270                     |270/-90 (16200000)
            |                            |
 +/-180-----------0           +/-180-----------0
            |               (10800000)   |
            |270/-90                     |90/-270 (5400000)
 

Parameters:

ooAngle - the angle in OOXML units divided by 60000

width - the width of the bounding box

height - the height of the bounding box

Returns:

the angle in degrees

See Also:

unskew angle