/* Copyright 2013 The jeo project. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.jeo.geom;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.LineString;
public class LineStringPath extends CoordinatePath {
/** original line string */
final LineString line;
/** coordinate index */
int i;
/** line coordinates */
CoordinateSequence coords;
/** number of coordinates */
int numCoords;
LineStringPath(LineString line) {
this.line = line;
doReset();
}
@Override
public Geometry geometry() {
return line;
}
@Override
protected PathStep doNext(Coordinate c) {
if (i == numCoords) {
return PathStep.STOP;
}
coords.getCoordinate(i, c);
return i++ == 0 ? PathStep.MOVE_TO : PathStep.LINE_TO;
}
@Override
protected void doReset() {
i = 0;
coords = line.getCoordinateSequence();
numCoords = coords.size();
}
}