[giscore] Bounding of a MapPolyline is too big when it is a wide poly…

…line.

The bounding box of a polyline is expanded with 2 times the width of the
polyline. It should be one time. This commit fixes this issue.

Signed-off-by: Stéphane Galland <galland@arakhne.org>

advanced/gis/giscore/src/main/java/org/arakhne/afc/gis/mapelement/MapPolyline.java

@@ -637,14 +637,14 @@ public final void toPath2D(Path2d path, double startPosition, double endPosition
 	@Pure
 	protected Rectangle2d calcBounds() {
 		final Rectangle2d bounds = super.calcBounds().toBoundingBox();
-		if (bounds != null && this.isWidePolyline) {
+		if (bounds != null && isWidePolyline()) {
 			final double w = getWidth();
 			final double mx = bounds.getMinX();
 			final double my = bounds.getMinY();
 			final double xx = bounds.getMaxX();
 			final double xy = bounds.getMaxY();
-			bounds.add(mx - w, my - w);
-			bounds.add(xx + w, xy + w);
+			final double dw = w / 2.;
+			bounds.setFromCorners(mx - dw, my - dw, xx + dw, xy + dw);
 		}
 		return bounds;
 	}