//从文件中读取数据
private static FeatureSource GetFeaturesource(SHPGeoDataBase thisdb, String path)
{
OSGeo.OGR.DataSource ds = GetOGRDataSource(thisdb, path);
//init schema
OSGeo.OGR.Layer layer = ds.GetLayerByIndex(0);
OSGeo.OGR.FeatureDefn fd = layer.GetLayerDefn();
Int32 sIndex = path.LastIndexOf("\\");
string sname = path.Substring(sIndex + 1, path.Length - sIndex - 1 - 4);
int fieldcount = fd.GetFieldCount();
Dictionary <String, FieldDefn> tmpField = new Dictionary <string, FieldDefn>();
for (int i = 0; i < fieldcount; ++i)
{
OSGeo.OGR.FieldDefn field = fd.GetFieldDefn(i);
tmpField.Add(field.GetName(), field);
}
GisSmartTools.RS.ReferenceSystem rfs;
OSGeo.OSR.SpatialReference osrrf = layer.GetSpatialRef();
if (osrrf.IsProjected() != 0)
{
rfs = new GisSmartTools.RS.SRS(osrrf);
}
else
{
rfs = new GisSmartTools.RS.GRS(osrrf);
}
Schema rs = new Schema(sname, layer.GetGeomType(), rfs, tmpField);
//get featurecollection
FeatureCollection fc = GetFeatureCollection(layer, rs);
//close file
//ds.Dispose();
return(new FeatureSource(rs, fc));
}
// returns wkt-representation of current srs
public string getSrsName()
{
OSGeo.OSR.SpatialReference oSRS = new OSGeo.OSR.SpatialReference("");
oSRS.ImportFromProj4(SRS.ToString());
if (oSRS.IsProjected() == 1)
return oSRS.GetAttrValue("projcs", 0);
return oSRS.GetAttrValue("geogcs", 0);
}
protected override void SolveInstance(IGH_DataAccess DA)
{
List <Curve> boundary = new List <Curve>();
DA.GetDataList <Curve>("Boundary", boundary);
int Res = -1;
DA.GetData <int>("Resolution", ref Res);
string fileloc = "";
DA.GetData <string>("File Location", ref fileloc);
if (!fileloc.EndsWith(@"\"))
{
fileloc = fileloc + @"\";
}
string prefix = "";
DA.GetData <string>("Prefix", ref prefix);
string URL = "";
DA.GetData <string>("REST URL", ref URL);
bool run = false;
DA.GetData <bool>("run", ref run);
string userSRStext = "";
DA.GetData <string>("User Spatial Reference System", ref userSRStext);
///GDAL setup
RESTful.GdalConfiguration.ConfigureOgr();
///TODO: implement SetCRS here.
///Option to set CRS here to user-defined. Needs a SetCRS global variable.
//string userSRStext = "EPSG:4326";
OSGeo.OSR.SpatialReference userSRS = new OSGeo.OSR.SpatialReference("");
userSRS.SetFromUserInput(userSRStext);
int userSRSInt = Int16.Parse(userSRS.GetAuthorityCode(null));
///Set transform from input spatial reference to Rhino spatial reference
OSGeo.OSR.SpatialReference rhinoSRS = new OSGeo.OSR.SpatialReference("");
rhinoSRS.SetWellKnownGeogCS("WGS84");
///This transform moves and scales the points required in going from userSRS to XYZ and vice versa
Transform userSRSToModelTransform = Heron.Convert.GetUserSRSToModelTransform(userSRS);
Transform modelToUserSRSTransform = Heron.Convert.GetModelToUserSRSTransform(userSRS);
OSGeo.OSR.CoordinateTransformation coordTransformRhinoToUser = new OSGeo.OSR.CoordinateTransformation(rhinoSRS, userSRS);
OSGeo.OSR.CoordinateTransformation coordTransformUserToRhino = new OSGeo.OSR.CoordinateTransformation(userSRS, rhinoSRS);
GH_Structure <GH_String> mapList = new GH_Structure <GH_String>();
GH_Structure <GH_String> mapquery = new GH_Structure <GH_String>();
GH_Structure <GH_Rectangle> imgFrame = new GH_Structure <GH_Rectangle>();
FileInfo file = new FileInfo(fileloc);
file.Directory.Create();
string size = "";
if (Res != 0)
{
size = "&size=" + Res + "%2C" + Res;
}
for (int i = 0; i < boundary.Count; i++)
{
GH_Path path = new GH_Path(i);
//Get image frame for given boundary
BoundingBox imageBox = boundary[i].GetBoundingBox(false);
Point3d min = Heron.Convert.XYZToWGS(imageBox.Min);
Point3d max = Heron.Convert.XYZToWGS(imageBox.Max);
Rectangle3d rect = BBoxToRect(imageBox);
///ogr method
OSGeo.OGR.Geometry minOgr = Heron.Convert.Point3dToOgrPoint(min);
minOgr.Transform(coordTransformRhinoToUser);
OSGeo.OGR.Geometry maxOgr = Heron.Convert.Point3dToOgrPoint(max);
maxOgr.Transform(coordTransformRhinoToUser);
//Query the REST service
string restquery = URL +
///legacy method for creating bounding box string
//"bbox=" + Heron.Convert.ConvertLat(min.X, 3857) + "%2C" + Heron.Convert.ConvertLon(min.Y, 3857) + "%2C" + Heron.Convert.ConvertLat(max.X, 3857) + "%2C" + Heron.Convert.ConvertLon(max.Y, 3857) +
///ogr method for creating bounding box string
"bbox=" + minOgr.GetX(0) + "%2C" + minOgr.GetY(0) + "%2C" + maxOgr.GetX(0) + "%2C" + maxOgr.GetY(0) +
"&bboxSR=" + userSRSInt +
size + //"&layers=&layerdefs=" +
"&imageSR=" + userSRSInt + //"&transparent=false&dpi=&time=&layerTimeOptions=" +
"&format=jpg&f=json";
mapquery.Append(new GH_String(restquery), path);
string result = "";
if (run)
{
///get extent of image from arcgis rest service as JSON
result = Heron.Convert.HttpToJson(restquery);
JObject jObj = JsonConvert.DeserializeObject <JObject>(result);
Point3d extMin = new Point3d((double)jObj["extent"]["xmin"], (double)jObj["extent"]["ymin"], 0);
Point3d extMax = new Point3d((double)jObj["extent"]["xmax"], (double)jObj["extent"]["ymax"], 0);
///convert and transform extents to points
OSGeo.OGR.Geometry extOgrMin = new OSGeo.OGR.Geometry(wkbGeometryType.wkbPointZM);
extOgrMin.AddPoint((double)jObj["extent"]["xmin"], (double)jObj["extent"]["ymin"], 0.0);
extOgrMin.Transform(coordTransformUserToRhino);
Point3d ogrPtMin = Heron.Convert.OgrPointToPoint3d(extOgrMin);
OSGeo.OGR.Geometry extOgrMax = new OSGeo.OGR.Geometry(wkbGeometryType.wkbPointZM);
extOgrMax.AddPoint((double)jObj["extent"]["xmax"], (double)jObj["extent"]["ymax"], 0.0);
extOgrMax.Transform(coordTransformUserToRhino);
Point3d ogrPtMax = Heron.Convert.OgrPointToPoint3d(extOgrMax);
///if SRS is geographic (ie WGS84) use Rhino's internal projection
///this is still buggy as it doesn't work with other geographic systems like NAD27
if ((userSRS.IsProjected() == 0) && (userSRS.IsLocal() == 0))
{
rect = new Rectangle3d(Plane.WorldXY, Heron.Convert.WGSToXYZ(extMin), Heron.Convert.WGSToXYZ(extMax));
}
else
{
//rect = new Rectangle3d(Plane.WorldXY, Heron.Convert.UserSRSToXYZ(extMin, userSRSToModel), Heron.Convert.UserSRSToXYZ(extMax, userSRSToModel));
rect = new Rectangle3d(Plane.WorldXY, userSRSToModelTransform * extMin, userSRSToModelTransform * extMax);
}
///download image from source
string imageQuery = jObj["href"].ToString();
System.Net.WebClient webClient = new System.Net.WebClient();
webClient.DownloadFile(imageQuery, fileloc + prefix + "_" + i + ".jpg");
webClient.Dispose();
}
var bitmapPath = fileloc + prefix + "_" + i + ".jpg";
mapList.Append(new GH_String(bitmapPath), path);
imgFrame.Append(new GH_Rectangle(rect), path);
AddPreviewItem(bitmapPath, rect);
}
DA.SetDataTree(0, mapList);
DA.SetDataTree(1, imgFrame);
DA.SetDataTree(2, mapquery);
}
