public void appendLine(float x1, float y1)
{
path.lineTo(x1, y1);
}
public void DrawPolyline(int[] xPoints, int[] yPoints, int nPoints)
{
if(nPoints > 0)
{
GeneralPath generalpath = new GeneralPath();
generalpath.moveTo(xPoints[0], yPoints[0]);
for(int j = 1; j < nPoints; j++)
generalpath.lineTo(xPoints[j], yPoints[j]);
Draw(generalpath);
}
}
/**
* Gets the freeform path
*
* @return the freeform path
*/
public GeneralPath GetPath(){
EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
opt.AddEscherProperty(new EscherSimpleProperty(EscherProperties.GEOMETRY__SHAPEPATH, 0x4));
EscherArrayProperty verticesProp = (EscherArrayProperty)getEscherProperty(opt, (short)(EscherProperties.GEOMETRY__VERTICES + 0x4000));
if(verticesProp == null) verticesProp = (EscherArrayProperty)getEscherProperty(opt, EscherProperties.GEOMETRY__VERTICES);
EscherArrayProperty segmentsProp = (EscherArrayProperty)getEscherProperty(opt, (short)(EscherProperties.GEOMETRY__SEGMENTINFO + 0x4000));
if(segmentsProp == null) segmentsProp = (EscherArrayProperty)getEscherProperty(opt, EscherProperties.GEOMETRY__SEGMENTINFO);
//sanity check
if(verticesProp == null) {
logger.log(POILogger.WARN, "Freeform is missing GEOMETRY__VERTICES ");
return null;
}
if(segmentsProp == null) {
logger.log(POILogger.WARN, "Freeform is missing GEOMETRY__SEGMENTINFO ");
return null;
}
GeneralPath path = new GeneralPath();
int numPoints = verticesProp.GetNumberOfElementsInArray();
int numSegments = segmentsProp.GetNumberOfElementsInArray();
for (int i = 0, j = 0; i < numSegments && j < numPoints; i++) {
byte[] elem = segmentsProp.GetElement(i);
if(Arrays.Equals(elem, SEGMENTINFO_MOVETO)){
byte[] p = verticesProp.GetElement(j++);
short x = LittleEndian.Getshort(p, 0);
short y = LittleEndian.Getshort(p, 2);
path.moveTo(
((float)x*POINT_DPI/MASTER_DPI),
((float)y*POINT_DPI/MASTER_DPI));
} else if (Arrays.Equals(elem, SEGMENTINFO_CUBICTO) || Arrays.Equals(elem, SEGMENTINFO_CUBICTO2)){
i++;
byte[] p1 = verticesProp.GetElement(j++);
short x1 = LittleEndian.Getshort(p1, 0);
short y1 = LittleEndian.Getshort(p1, 2);
byte[] p2 = verticesProp.GetElement(j++);
short x2 = LittleEndian.Getshort(p2, 0);
short y2 = LittleEndian.Getshort(p2, 2);
byte[] p3 = verticesProp.GetElement(j++);
short x3 = LittleEndian.Getshort(p3, 0);
short y3 = LittleEndian.Getshort(p3, 2);
path.curveTo(
((float)x1*POINT_DPI/MASTER_DPI), ((float)y1*POINT_DPI/MASTER_DPI),
((float)x2*POINT_DPI/MASTER_DPI), ((float)y2*POINT_DPI/MASTER_DPI),
((float)x3*POINT_DPI/MASTER_DPI), ((float)y3*POINT_DPI/MASTER_DPI));
} else if (Arrays.Equals(elem, SEGMENTINFO_LINETO)){
i++;
byte[] pnext = segmentsProp.GetElement(i);
if(Arrays.Equals(pnext, SEGMENTINFO_ESCAPE)){
if(j + 1 < numPoints){
byte[] p = verticesProp.GetElement(j++);
short x = LittleEndian.Getshort(p, 0);
short y = LittleEndian.Getshort(p, 2);
path.lineTo(
((float)x*POINT_DPI/MASTER_DPI), ((float)y*POINT_DPI/MASTER_DPI));
}
} else if (Arrays.Equals(pnext, SEGMENTINFO_CLOSE)){
path.ClosePath();
}
}
}
return path;
}
/**
* Draws a sequence of connected lines defined by
* arrays of <i>x</i> and <i>y</i> coordinates.
* Each pair of (<i>x</i>, <i>y</i>) coordinates defines a point.
* The figure is not closed if the first point
* differs from the last point.
* @param xPoints an array of <i>x</i> points
* @param yPoints an array of <i>y</i> points
* @param nPoints the total number of points
* @see java.awt.Graphics#drawPolygon(int[], int[], int)
* @since JDK1.1
*/
public void DrawPolyline(int[] xPoints, int[] yPoints,
int nPoints){
if(nPoints > 0){
GeneralPath path = new GeneralPath();
path.moveTo(xPoints[0], yPoints[0]);
for(int i=1; i<nPoints; i++)
path.lineTo(xPoints[i], yPoints[i]);
Draw(path);
}
}
