/*
* Library name : dxf
* (C) 2006 Micha�l Michaud
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* For more information, contact:
*
* michael.michaud@free.fr
*
*/
package org.jgrasstools.gears.io.dxfdwg.libs.dxf;
import java.io.IOException;
import java.io.RandomAccessFile;
import org.geotools.feature.DefaultFeatureCollection;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.opengis.feature.simple.SimpleFeature;
import com.vividsolutions.jts.geom.CoordinateList;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.Polygon;
/**
* POLYLINE DXF entity.
* This class has a static method reading a DXF POLYLINE and adding the new
* feature to a FeatureCollection
* @author Micha�l Michaud
* @version 0.5.0
*/
// History
@SuppressWarnings("nls")
public class DxfPOLYLINE extends DxfENTITY {
public DxfPOLYLINE() {
super("DEFAULT");
}
public static DxfGroup readEntity( RandomAccessFile raf, DefaultFeatureCollection entities ) throws IOException {
SimpleFeatureBuilder builder = new SimpleFeatureBuilder(DxfFile.DXF_LINESCHEMA);
String layer = "";
String ltype = "";
Double elevation = new Double(0.0);
Double thickness = new Double(0.0);
Integer color = new Integer(256);
String text = "";
Double text_height = new Double(0.0);
String text_style = "";
String geomType = "LineString";
CoordinateList coordList = new CoordinateList();
double x = Double.NaN, y = Double.NaN, z = Double.NaN;
DxfGroup group = DxfFile.ENTITIES;
while( !group.equals(DxfFile.ENDSEC) ) {
if (group.getCode() == 8) {
layer = group.getValue();
group = DxfGroup.readGroup(raf);
} else if (group.getCode() == 6) {
ltype = group.getValue();
group = DxfGroup.readGroup(raf);
} else if (group.getCode() == 38) {
elevation = new Double(group.getDoubleValue());
group = DxfGroup.readGroup(raf);
} else if (group.getCode() == 39) {
thickness = new Double(group.getDoubleValue());
group = DxfGroup.readGroup(raf);
} else if (group.getCode() == 62) {
color = new Integer(group.getIntValue());
group = DxfGroup.readGroup(raf);
} else if (group.getCode() == 70) {
if ((group.getIntValue() & 1) == 1)
geomType = "Polygon";
group = DxfGroup.readGroup(raf);
} else if (group.equals(VERTEX)) {
group = DxfVERTEX.readEntity(raf, coordList);
} else if (group.equals(SEQEND)) {
group = DxfGroup.readGroup(raf);
} else if (group.getCode() == 0) {
// 0 group different from VERTEX and different from SEQEND
break;
} else {
group = DxfGroup.readGroup(raf);
}
}
if (geomType.equals("LineString")) {
LineString lineString = gF.createLineString(coordList.toCoordinateArray());
Object[] values = new Object[]{lineString, layer, ltype, elevation, thickness, color, text, text_height, text_style};
builder.addAll(values);
StringBuilder featureId = new StringBuilder();
featureId.append(DxfFile.DXF_LINESCHEMA.getTypeName());
featureId.append(".");
featureId.append(DxfFile.getNextFid());
SimpleFeature feature = builder.buildFeature(featureId.toString());
entities.add(feature);
} else if (geomType.equals("Polygon")) {
if (coordList.size() <= 3) {
coordList.add(coordList.get(0));
}
coordList.closeRing();
Polygon polygon = gF.createPolygon(gF.createLinearRing(coordList.toCoordinateArray()), null);
Object[] values = new Object[]{polygon, layer, ltype, elevation, thickness, color, text, text_height, text_style};
builder.addAll(values);
StringBuilder featureId = new StringBuilder();
featureId.append(DxfFile.DXF_POLYGONSCHEMA.getTypeName());
featureId.append(".");
featureId.append(DxfFile.getNextFid());
SimpleFeature feature = builder.buildFeature(featureId.toString());
entities.add(feature);
} else {
}
return group;
}
}