public int getLength(Object geometry) {
MultiLineString multi = (MultiLineString) geometry;
int numlines;
int numpoints;
int length;
numlines = multi.getNumGeometries();
numpoints = multi.getNumPoints();
if (shapeType == ShapeType.ARC) {
length = 44 + (4 * numlines) + (numpoints * 16);
} else if (shapeType == ShapeType.ARCM) {
length = 44 + (4 * numlines) + (numpoints * 16) + 8 + 8 + (8 * numpoints);
} else if (shapeType == ShapeType.ARCZ) {
length =
44
+ (4 * numlines)
+ (numpoints * 16)
+ 8
+ 8
+ (8 * numpoints)
+ 8
+ 8
+ (8 * numpoints);
} else {
throw new IllegalStateException("Expected ShapeType of Arc, got " + shapeType);
}
return length;
}
public void write(WriteBufferManager buffer, Object geometry) throws IOException {
MultiLineString multi = (MultiLineString) geometry;
Envelope box = multi.getEnvelopeInternal();
buffer.putDouble(box.getMinX());
buffer.putDouble(box.getMinY());
buffer.putDouble(box.getMaxX());
buffer.putDouble(box.getMaxY());
int numParts = multi.getNumGeometries();
buffer.putInt(numParts);
int npoints = multi.getNumPoints();
buffer.putInt(npoints);
LineString[] lines = new LineString[numParts];
int idx = 0;
for (int i = 0; i < numParts; i++) {
lines[i] = (LineString) multi.getGeometryN(i);
buffer.putInt(idx);
idx = idx + lines[i].getNumPoints();
}
Coordinate[] coords = multi.getCoordinates();
for (int t = 0; t < npoints; t++) {
buffer.putDouble(coords[t].x);
buffer.putDouble(coords[t].y);
}
if (shapeType == ShapeType.ARCZ) {
double[] zExtreame = JTSUtilities.zMinMax(coords);
if (Double.isNaN(zExtreame[0])) {
buffer.putDouble(0.0);
buffer.putDouble(0.0);
} else {
buffer.putDouble(zExtreame[0]);
buffer.putDouble(zExtreame[1]);
}
for (int t = 0; t < npoints; t++) {
double z = coords[t].z;
if (Double.isNaN(z)) {
buffer.putDouble(0.0);
} else {
buffer.putDouble(z);
}
}
}
if (shapeType == ShapeType.ARCZ) {
buffer.putDouble(-10E40);
buffer.putDouble(-10E40);
for (int t = 0; t < npoints; t++) {
buffer.putDouble(-10E40);
}
}
}