*
* @throws IllegalArgumentException
* if an unknown symbolizer impl was passed in.
*/
private LiteShape2 getSampleShape(Symbolizer symbolizer, int legendWidth, int legendHeight) {
LiteShape2 sampleShape;
final float hpad = (legendWidth * LegendUtils.hpaddingFactor);
final float vpad = (legendHeight * LegendUtils.vpaddingFactor);
if (symbolizer instanceof LineSymbolizer) {
if (this.sampleLine == null) {
Coordinate[] coords = { new Coordinate(hpad, legendHeight - vpad - 1),
new Coordinate(legendWidth - hpad - 1, vpad) };
LineString geom = geomFac.createLineString(coords);
try {
this.sampleLine = new LiteShape2(geom, null, null, false);
} catch (Exception e) {
this.sampleLine = null;
}
}
sampleShape = this.sampleLine;
} else if ((symbolizer instanceof PolygonSymbolizer)
|| (symbolizer instanceof RasterSymbolizer)) {
if (this.sampleRect == null) {
final float w = legendWidth - (2 * hpad) - 1;
final float h = legendHeight - (2 * vpad) - 1;
Coordinate[] coords = { new Coordinate(hpad, vpad), new Coordinate(hpad, vpad + h),
new Coordinate(hpad + w, vpad + h), new Coordinate(hpad + w, vpad),
new Coordinate(hpad, vpad) };
LinearRing shell = geomFac.createLinearRing(coords);
Polygon geom = geomFac.createPolygon(shell, null);
try {
this.sampleRect = new LiteShape2(geom, null, null, false);
} catch (Exception e) {
this.sampleRect = null;
}
}
sampleShape = this.sampleRect;
} else if (symbolizer instanceof PointSymbolizer || symbolizer instanceof TextSymbolizer) {
if (this.samplePoint == null) {
Coordinate coord = new Coordinate(legendWidth / 2, legendHeight / 2);
try {
this.samplePoint = new LiteShape2(geomFac.createPoint(coord), null, null, false);
} catch (Exception e) {
this.samplePoint = null;
}
}