package org.geotools.data.dxf.entities;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.LinearRing;
import org.geotools.data.dxf.parser.DXFLineNumberReader;
import java.io.EOFException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.geotools.data.GeometryType;
import org.geotools.data.dxf.parser.DXFUnivers;
import org.geotools.data.dxf.header.DXFLayer;
import org.geotools.data.dxf.header.DXFLineType;
import org.geotools.data.dxf.parser.DXFCodeValuePair;
import org.geotools.data.dxf.parser.DXFGroupCode;
import org.geotools.data.dxf.parser.DXFParseException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
*
*
* @source $URL$
*/
public class DXFCircle extends DXFEntity {
private static final Log log = LogFactory.getLog(DXFCircle.class);
public DXFPoint _point = new DXFPoint();
public double _radius = 0;
public DXFCircle(DXFCircle newCircle) {
this(new DXFPoint(newCircle._point._point.x, newCircle._point._point.y, newCircle.getColor(), newCircle.getRefLayer(), 0, newCircle.getThickness()),
newCircle._radius, newCircle.getLineType(), newCircle.getColor(), newCircle.getRefLayer(), 0, newCircle.getThickness());
setType(newCircle.getType());
setStartingLineNumber(newCircle.getStartingLineNumber());
setUnivers(newCircle.getUnivers());
}
public DXFCircle(DXFPoint p, double r, DXFLineType lineType, int c, DXFLayer l, int visibility, double thickness) {
super(c, l, visibility, lineType, thickness);
_point = p;
_radius = r;
setName("DXFCircle");
}
public DXFCircle(DXFPoint p, double r, DXFLineType lineType, int c, DXFLayer l, int visibility, double thickness, DXFExtendedData extData) {
super(c, l, visibility, lineType, thickness);
_point = p;
_radius = r;
setName("DXFCircle");
_extendedData = extData;
}
public static DXFCircle read(DXFLineNumberReader br, DXFUnivers univers) throws NumberFormatException, IOException {
int visibility = 0, c = 0;
double x = 0, y = 0, r = 0, thickness = 1;
DXFLayer l = null;
DXFLineType lineType = null;
DXFExtendedData _extData = null;
int sln = br.getLineNumber();
log.debug(">>Enter at line: " + sln);
DXFCodeValuePair cvp = null;
DXFGroupCode gc = null;
boolean doLoop = true;
while (doLoop) {
cvp = new DXFCodeValuePair();
try {
gc = cvp.read(br);
} catch (DXFParseException ex) {
throw new IOException("DXF parse error" + ex.getLocalizedMessage());
} catch (EOFException e) {
doLoop = false;
break;
}
switch (gc) {
case TYPE:
String type = cvp.getStringValue();
// geldt voor alle waarden van type
br.reset();
doLoop = false;
break;
case LINETYPE_NAME: //"6"
lineType = univers.findLType(cvp.getStringValue());
break;
case LAYER_NAME: //"8"
l = univers.findLayer(cvp.getStringValue());
break;
case THICKNESS: //"39"
thickness = cvp.getDoubleValue();
break;
case VISIBILITY: //"60"
visibility = cvp.getShortValue();
break;
case COLOR: //"62"
c = cvp.getShortValue();
break;
case X_1: //"10"
x = cvp.getDoubleValue();
break;
case Y_1: //"20"
y = cvp.getDoubleValue();
break;
case DOUBLE_1: //"40"
r = cvp.getDoubleValue();
break;
case XDATA_APPLICATION_NAME:
String appName = cvp.getStringValue();
_extData = DXFExtendedData.getExtendedData(br);
_extData.setAppName(appName);
break;
default:
break;
}
}
DXFCircle e = new DXFCircle(new DXFPoint(x, y, c, l, visibility, 1), r, lineType, c, l, visibility, thickness);
e.setType(GeometryType.POLYGON);
e.setStartingLineNumber(sln);
e.setUnivers(univers);
log.debug(e.toString(x, y, c, visibility, thickness));
log.debug(">>Exit at line: " + br.getLineNumber());
return e;
}
public Coordinate[] toCoordinateArray() {
if (_point == null || _point._point == null || _radius <= 0) {
addError("coordinate array can not be created.");
return null;
}
List<Coordinate> lc = new ArrayList<Coordinate>();
double startAngle = 0.0;
double endAngle = 2 * Math.PI;
double segAngle = 2 * Math.PI / _radius;
if(_radius < DXFUnivers.NUM_OF_SEGMENTS){
segAngle = DXFUnivers.MIN_ANGLE;
}
double angle = startAngle;
for (;;) {
double x = _point._point.getX() + _radius * Math.cos(angle);
double y = _point._point.getY() + _radius * Math.sin(angle);
Coordinate c = new Coordinate(x, y);
lc.add(c);
if (angle >= endAngle) {
break;
}
angle += segAngle;
if (angle > endAngle) {
angle = endAngle;
}
}
// Fix to avoid error while creating LinearRing
// If first coord is not equal to last coord
if (!lc.get(0).equals(lc.get(lc.size() - 1))) {
// Set last coordinate == first
lc.set(lc.size() - 1, lc.get(0));
}
return rotateAndPlace(lc.toArray(new Coordinate[]{}));
}
@Override
public Geometry getGeometry() {
if (geometry == null) {
updateGeometry();
}
return super.getGeometry();
}
@Override
public void updateGeometry() {
Coordinate[] ca = toCoordinateArray();
if (ca != null && ca.length > 1) {
LinearRing lr = getUnivers().getGeometryFactory().createLinearRing(ca);
geometry = getUnivers().getGeometryFactory().createPolygon(lr, null);
} else {
addError("coordinate array faulty, size: " + (ca == null ? 0 : ca.length));
}
}
public String toString(double x, double y, int c, int visibility, double thickness) {
StringBuffer s = new StringBuffer();
s.append("DXFCircle [");
s.append("x: ");
s.append(x + ", ");
s.append("y: ");
s.append(y + ", ");
s.append("color: ");
s.append(c + ", ");
s.append("visibility: ");
s.append(visibility + ", ");
s.append("thickness: ");
s.append(thickness);
s.append("]");
return s.toString();
}
@Override
public DXFEntity translate(double x, double y) {
_point._point.x += x;
_point._point.y += y;
return this;
}
@Override
public DXFEntity clone() {
return new DXFCircle(this);
}
}