public void testJTS(JtsSpatialContext ctx, String name) throws Exception {
ShapeReader reader = ctx.getFormats().getReader(name);
ShapeWriter writer = ctx.getFormats().getWriter(name);
Shape shape = null;
//
// wkt = readFirstLineFromRsrc("/russia.wkt.txt");
// shape = ctx.readShape(wkt);
// // testReadAndWriteTheSame(shape,format);
// Examples from Wikipedia
shape = ctx.readShape("LINESTRING (30 10, 10 30, 40 40)");
// testReadAndWriteTheSame(shape,format);
shape = ctx.readShape("POLYGON ((35 10, 45 45, 15 40, 10 20, 35 10))");
testReadAndWriteTheSame(shape, reader, writer);
shape =
ctx.readShape("POLYGON ((35 10, 45 45, 15 40, 10 20, 35 10),(20 30, 35 35, 30 20, 20 30))");
testReadAndWriteTheSame(shape, reader, writer);
shape = ctx.readShape("MULTIPOINT ((10 40), (40 30), (20 20), (30 10))");
testReadAndWriteTheSame(shape, reader, writer);
shape = ctx.readShape("MULTIPOINT (10 40, 40 30, 20 20, 30 10)");
testReadAndWriteTheSame(shape, reader, writer);
shape = ctx.readShape("MULTILINESTRING ((10 10, 20 20, 10 40),(40 40, 30 30, 40 20, 30 10))");
testReadAndWriteTheSame(shape, reader, writer);
shape =
ctx.readShape(
"MULTIPOLYGON (((30 20, 45 40, 10 40, 30 20)),((15 5, 40 10, 10 20, 5 10, 15 5)))");
testReadAndWriteTheSame(shape, reader, writer);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
String name = req.getParameter("name");
Shape shape = null;
String country = req.getParameter("country");
if (country != null && country.length() == 3) {
InputStream in = WicketApplication.getStreamFromDataResource("countries-poly.txt");
try {
SampleDataReader reader = new SampleDataReader(in);
while (reader.hasNext()) {
SampleData data = reader.next();
if (country.equalsIgnoreCase(data.id)) {
if (StringUtils.isEmpty(name)) name = data.name;
shape = ctx.readShape(data.shape);
break;
}
}
} finally {
IOUtils.closeQuietly(in);
}
if (shape == null) {
res.sendError(HttpServletResponse.SC_BAD_REQUEST, "unable to find: " + country);
return;
}
}
int depth = getIntParam(req, "depth", 16);
String gridtype = req.getParameter("gridType");
SpatialPrefixTree grid;
if ("geohash".equals(gridtype)) {
grid = new GeohashPrefixTree(ctx, depth);
} else if ("quad".equals(gridtype)) {
grid = new QuadPrefixTree(ctx, depth);
} else {
res.sendError(HttpServletResponse.SC_BAD_REQUEST, "unknown grid type: " + gridtype);
return;
}
// If they don't set a country, then use the input
if (shape == null) {
String geo = req.getParameter("geo");
if (geo == null) {
res.sendError(HttpServletResponse.SC_BAD_REQUEST, "missing parameter: 'geo'");
return;
}
try {
shape = ctx.readShape(geo);
} catch (Exception ex) {
ex.printStackTrace();
res.sendError(HttpServletResponse.SC_BAD_REQUEST, "error parsing geo: " + ex);
}
}
SpatialArgs args = new SpatialArgs(SpatialOperation.Intersects, shape);
double distErrPct = getDoubleParam(req, "distErrPct", SpatialArgs.DEFAULT_DISTERRPCT);
double distErr = args.resolveDistErr(grid.getSpatialContext(), distErrPct);
int detailLevel = grid.getLevelForDistance(distErr);
List<Cell> nodes = grid.getCells(shape, detailLevel, false, true);
int biggestLevel = 100;
for (Cell node : nodes) {
biggestLevel = Math.min(biggestLevel, node.getLevel());
}
String msg =
"Using detail level "
+ detailLevel
+ " (biggest is "
+ biggestLevel
+ ") yielding "
+ nodes.size()
+ " tokens.";
log(msg);
List<String> info = SpatialPrefixTree.cellsToTokenStrings(nodes);
String format = req.getParameter("format");
if ("kml".equals(format)) {
if (name == null || name.length() < 2) {
name = "KML - " + new Date(System.currentTimeMillis());
}
Kml kml = KMLHelper.toKML(name, grid, info);
res.setHeader("Content-Disposition", "attachment; filename=\"" + name + "\";");
res.setContentType("application/vnd.google-earth.kml+xml");
kml.marshal(res.getOutputStream());
return;
}
res.setContentType("text/plain");
PrintStream out = new PrintStream(res.getOutputStream());
out.println(msg);
out.println(info.toString());
}
