/*
* citygml4j - The Open Source Java API for CityGML
* https://github.com/citygml4j
*
* Copyright 2013-2017 Claus Nagel <claus.nagel@gmail.com>
*
* 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.
*/
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.citygml4j.CityGMLContext;
import org.citygml4j.builder.CityGMLBuilder;
import org.citygml4j.builder.copy.DeepCopyBuilder;
import org.citygml4j.geometry.BoundingBox;
import org.citygml4j.geometry.Matrix;
import org.citygml4j.model.citygml.building.Building;
import org.citygml4j.model.citygml.core.CityModel;
import org.citygml4j.model.gml.base.AbstractGML;
import org.citygml4j.model.gml.feature.BoundingShape;
import org.citygml4j.model.gml.geometry.primitives.DirectPositionList;
import org.citygml4j.model.gml.geometry.primitives.LinearRing;
import org.citygml4j.model.module.citygml.CityGMLVersion;
import org.citygml4j.model.module.citygml.CoreModule;
import org.citygml4j.util.gmlid.DefaultGMLIdManager;
import org.citygml4j.util.walker.GMLWalker;
import org.citygml4j.xml.io.CityGMLInputFactory;
import org.citygml4j.xml.io.CityGMLOutputFactory;
import org.citygml4j.xml.io.reader.CityGMLReader;
import org.citygml4j.xml.io.writer.CityModelWriter;
public class TranslateScaleAndRotate {
public static void main(String[] args) throws Exception {
SimpleDateFormat df = new SimpleDateFormat("[HH:mm:ss] ");
System.out.println(df.format(new Date()) + "setting up citygml4j context and JAXB builder");
CityGMLContext ctx = new CityGMLContext();
CityGMLBuilder builder = ctx.createCityGMLBuilder();
System.out.println(df.format(new Date()) + "reading CityGML file LOD2_Building_v100.gml");
CityGMLInputFactory in = builder.createCityGMLInputFactory();
CityGMLReader reader = in.createCityGMLReader(new File("../../datasets/LOD2_Building_v100.gml"));
CityModel cityModel = (CityModel)reader.nextFeature();
Building building = (Building)cityModel.getCityObjectMember().get(0).getCityObject();
System.out.println(df.format(new Date()) + "deep copying building object");
DeepCopyBuilder copyBuilder = new DeepCopyBuilder();
Building copy = (Building)building.copy(copyBuilder);
BoundingShape boundedBy = copy.calcBoundedBy(false);
BoundingBox bbox = boundedBy.getEnvelope().toBoundingBox();
double width = bbox.getUpperCorner().getX() - bbox.getLowerCorner().getX();
System.out.println(df.format(new Date()) + "translating, scaling, and rotating building");
GMLVisitor gmlVisitor = new GMLVisitor(2 * width, 2, 90);
copy.accept(gmlVisitor);
System.out.println(df.format(new Date()) + "writing citygml4j object tree as CityGML 2.0.0 document");
CityGMLOutputFactory out = builder.createCityGMLOutputFactory(CityGMLVersion.v2_0_0);
CityModelWriter writer = out.createCityModelWriter(new File("LOD2_Building_v200.gml"));
writer.setPrefixes(CityGMLVersion.v2_0_0);
writer.setDefaultNamespace(CoreModule.v2_0_0);
writer.setSchemaLocations(CityGMLVersion.v2_0_0);
writer.setIndentString(" ");
writer.writeStartDocument();
writer.writeFeatureMember(building);
writer.writeFeatureMember(copy);
writer.writeEndDocument();
writer.close();
System.out.println(df.format(new Date()) + "CityGML file LOD2_Building_v200.gml written");
System.out.println(df.format(new Date()) + "sample citygml4j application successfully finished");
}
/**
* The Class GMLVisitor.
*/
private static class GMLVisitor extends GMLWalker {
/** The translate. */
private Matrix translate;
/** The scale. */
private Matrix scale;
/** The rotate. */
private Matrix rotate;
/**
* Instantiates a new GML visitor.
*
* @param translateBy the translate by
* @param scaleBy the scale by
* @param rotateBy the rotate by
*/
GMLVisitor(double translateBy, double scaleBy, double rotateBy) {
translate = new Matrix(new double[][]{
{1,0,0,translateBy},
{0,1,0,0},
{0,0,1,0},
{0,0,0,1}});
scale = new Matrix(new double[][]{
{scaleBy,0,0,0},
{0,scaleBy,0,0},
{0,0,scaleBy,0},
{0,0,0,1}});
rotateBy = Math.toRadians(90);
rotate = new Matrix(new double[][]{
{Math.cos(rotateBy),-Math.sin(rotateBy),0,0},
{Math.sin(rotateBy),Math.cos(rotateBy),0,0},
{0,0,1,0},
{0,0,0,1}});
}
/* (non-Javadoc)
* @see org.citygml4j.util.walker.GMLWalker#visit(org.citygml4j.model.gml.base.AbstractGML)
*/
@Override
public void visit(AbstractGML abstractGML) {
if (abstractGML.isSetId())
abstractGML.setId(DefaultGMLIdManager.getInstance().generateUUID());
super.visit(abstractGML);
}
/* (non-Javadoc)
* @see org.citygml4j.util.walker.GMLWalker#visit(org.citygml4j.model.gml.geometry.primitives.LinearRing)
*/
@Override
public void visit(LinearRing linearRing) {
if (linearRing.isSetPosList()) {
DirectPositionList posList = linearRing.getPosList();
List<Double> points = posList.toList3d();
List<Double> newPoints = new ArrayList<Double>();
for (int i = 0; i < points.size(); i += 3) {
double[] vals = new double[]{ points.get(i), points.get(i+1), points.get(i+2), 1};
Matrix v = new Matrix(vals, 1);
Matrix trans = rotate.times(scale.times(translate));
double[] newVals = trans.times(v.transpose()).toColumnPackedArray();
newPoints.add(newVals[0]);
newPoints.add(newVals[1]);
newPoints.add(newVals[2]);
}
posList.setValue(newPoints);
}
super.visit(linearRing);
}
}
}