package org.geotools.filter.function;
/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
//this code is autogenerated - you shouldnt be modifying it!
import org.geotools.filter.FunctionExpressionImpl;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.LineString;
public class FilterFunction_endAngle extends FunctionExpressionImpl {
public FilterFunction_endAngle() {
super("endAngle");
}
public int getArgCount() {
return 1;
}
public Object evaluate(Object feature) {
LineString ls;
try { // attempt to get value and perform conversion
ls = (LineString) getExpression(0).evaluate(feature, LineString.class);
} catch (Exception e) {
// probably a type error
throw new IllegalArgumentException(
"Filter Function problem for function endPoint argument #0 - expected type Geometry");
}
if(ls == null || ls.getNumPoints() == 1) {
return null;
}
CoordinateSequence cs = ls.getCoordinateSequence();
double dx = (cs.getX(cs.size() - 1) - cs.getX(cs.size() - 2));
double dy = (cs.getY(cs.size() - 1) - cs.getY(cs.size() - 2));
return -Math.toDegrees(Math.atan2(dy, dx));
}
}