/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, 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.
*/
package org.geotools.gml3.bindings;
import java.math.BigInteger;
import javax.xml.namespace.QName;
import org.geotools.geometry.DirectPosition1D;
import org.geotools.geometry.DirectPosition2D;
import org.geotools.geometry.DirectPosition3D;
import org.geotools.geometry.jts.coordinatesequence.CoordinateSequences;
import org.geotools.gml3.GML;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;
import org.opengis.geometry.DirectPosition;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import com.vividsolutions.jts.geom.CoordinateSequence;
/**
* Binding object for the type
* http://www.opengis.net/gml:DirectPositionListType.
*
* <p>
*
* <pre>
* <code>
* <complexType name="DirectPositionListType">
* <annotation>
* <documentation>DirectPositionList instances hold the coordinates for a sequence of direct positions within the same coordinate
* reference system (CRS).</documentation>
* </annotation>
* <simpleContent>
* <extension base="gml:doubleList">
* <attributeGroup ref="gml:SRSReferenceGroup"/>
* <attribute name="count" type="positiveInteger" use="optional">
* <annotation>
* <documentation>"count" allows to specify the number of direct positions in the list. If the attribute count is present then
* the attribute srsDimension shall be present, too.</documentation>
* </annotation>
* </attribute>
* </extension>
* </simpleContent>
* </complexType>
* </code>
* </pre>
*
* </p>
*
* @generated
*
*
*
* @source $URL$
*/
public class DirectPositionListTypeBinding extends AbstractComplexBinding {
/**
* @generated
*/
public QName getTarget() {
return GML.DirectPositionListType;
}
public int getExecutionMode() {
return AFTER;
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
*
* @generated modifiable
*/
public Class getType() {
return CoordinateSequence.class;
}
/**
* <!-- begin-user-doc --> <!-- end-user-doc -->
*
* @generated modifiable
*/
public Object parse(ElementInstance instance, Node node, Object value) throws Exception {
int crsDimension = GML3ParsingUtils.dimensions(node);
CoordinateReferenceSystem crs = GML3ParsingUtils.crs(node);
// double[] values = (double[]) value;
Double[] values = (Double[]) value;
BigInteger coordinatesCount = (BigInteger) node.getAttributeValue("count");
if (coordinatesCount == null) {
coordinatesCount = BigInteger.valueOf(values.length / crsDimension);
}
final int coordCount = coordinatesCount.intValue();
if (coordCount == 0) {
return new DirectPosition[] {};
}
int dim = values.length / coordCount;
//if ((dim < 1) || (dim > 2)) {
if (dim < 1) {
throw new IllegalArgumentException("dimension must be greater or equal to 1");
}
DirectPosition[] dps = new DirectPosition[coordCount];
if (dim == 1) {
for (int i = 0; i < coordCount; i++) {
dps[i] = new DirectPosition1D(crs);
dps[i].setOrdinate(0, values[i].doubleValue());
}
} else if(dim == 2){
int ordinateIdx = 0;
// HACK: not sure if its correct to assign ordinates 0 to 0 and 1 to
// 1 or it should be inferred from the crs
for (int coordIndex = 0; coordIndex < coordCount; coordIndex++) {
dps[coordIndex] = new DirectPosition2D(crs);
dps[coordIndex].setOrdinate(0, values[ordinateIdx].doubleValue());
dps[coordIndex].setOrdinate(1, values[ordinateIdx + 1].doubleValue());
ordinateIdx += crsDimension;
}
} else {
int ordinateIdx = 0;
// HACK: not sure if its correct to assign ordinates 0 to 0 and 1 to
// 1 or it should be inferred from the crs
for (int coordIndex = 0; coordIndex < coordCount; coordIndex++) {
dps[coordIndex] = new DirectPosition3D(crs);
dps[coordIndex].setOrdinate(0, values[ordinateIdx].doubleValue());
dps[coordIndex].setOrdinate(1, values[ordinateIdx + 1].doubleValue());
dps[coordIndex].setOrdinate(2, values[ordinateIdx + 2].doubleValue());
ordinateIdx += crsDimension;
}
}
return dps;
}
/**
*
* @param object a CoordinateSequence
*
* @see org.geotools.xml.AbstractComplexBinding#encode(java.lang.Object, org.w3c.dom.Document, org.w3c.dom.Element)
*/
public Element encode(Object object, Document document, Element value) throws Exception {
// TODO: remove this when the parser can do lists
CoordinateSequence cs = (CoordinateSequence) object;
StringBuffer sb = new StringBuffer();
int dim = CoordinateSequences.coordinateDimension(cs);
int size = cs.size();
int nOrdWithSpace = size * dim - 1;
int count = 0;
for (int i = 0; i < size; i++) {
for (int d = 0; d < dim; d++) {
sb.append(cs.getOrdinate(i, d));
if (count < nOrdWithSpace) {
sb.append(" ");
}
count++;
}
}
value.appendChild(document.createTextNode(sb.toString()));
return value;
}
}