/// <summary>
/// Union this rectangle with another
/// </summary>
/// <param name="rect"></param>
/// <returns></returns>
public ExtentRectangle Union(ExtentRectangle rect)
{
decimal newright, newleft, newtop, newbottom;
if (CellHeight > 0)
{
newtop = Math.Min(Top, rect.Top);
newbottom = Math.Max(Bottom, rect.Bottom);
}
else
{
newtop = Math.Max(Top, rect.Top);
newbottom = Math.Min(Bottom, rect.Bottom);
}
if (CellWidth > 0)
{
newleft = Math.Min(Left, rect.Left);
newright = Math.Max(Right, rect.Right);
}
else
{
newleft = Math.Max(Left, rect.Left);
newright = Math.Min(Right, rect.Right);
}
int newcols = (int)((newright - newleft) / Math.Abs(CellWidth));
int newrows = (int)((newtop - newbottom) / Math.Abs(CellHeight));
return(new ExtentRectangle(newtop, newleft, CellHeight, CellWidth, newrows, newcols));
}
/// <summary>
/// Create from existing rectangle but apply new cell size
/// </summary>
/// <param name="orig"></param>
public ExtentRectangle(ExtentRectangle orig, decimal mCellHeight, decimal mCellWidth)
{
int newRows = Convert.ToInt32(Math.Ceiling(orig.Height / Math.Abs(mCellHeight)));
int newCols = Convert.ToInt32(Math.Floor(orig.Width / Math.Abs(mCellWidth)));
_Init(orig.Top, orig.Left, mCellHeight, mCellWidth, newRows, newCols);
}
/// <summary>
/// We just want a list of keys back
/// </summary>
/// <param name="ext"></param>
/// <returns></returns>
public List <long> FIDIntersectExtent(ExtentRectangle ext)
{
Open();
List <long> retVal = new List <long>();
Geometry ring = new Geometry(wkbGeometryType.wkbLinearRing);
ring.AddPoint((double)ext.Left, (double)ext.Top, 0);
ring.AddPoint((double)ext.Right, (double)ext.Top, 0);
ring.AddPoint((double)ext.Right, (double)ext.Bottom, 0);
ring.AddPoint((double)ext.Left, (double)ext.Bottom, 0);
ring.AddPoint((double)ext.Left, (double)ext.Top, 0);
Geometry extrect = new Geometry(wkbGeometryType.wkbPolygon);
extrect.AddGeometry(ring);
foreach (KeyValuePair <long, VectorFeature> kvp in Features)
{
Geometry geo = kvp.Value.Feat.GetGeometryRef();
if (geo != null && extrect.Intersects(geo))
{
retVal.Add(kvp.Key);
}
}
return(retVal);
}
/// <summary>
/// This is a create constructor
/// </summary>
/// <param name="rTemplate"></param>
/// <param name="rExtent"></param>
/// <param name="sFilename"></param>
/// <param name="leaveopen"></param>
public Raster(Raster rTemplate, ExtentRectangle rExtent, FileInfo sFilename, bool leaveopen = false) : base(sFilename)
{
_Init(rTemplate.driver, rTemplate.VerticalUnits, rTemplate.Proj, rTemplate.Datatype, rExtent, rTemplate.origNodataVal);
if (!leaveopen)
{
UnloadDS();
}
}
/// <summary>
/// Temporary file constructor
/// </summary>
/// <param name="rTemplate"></param>
/// <param name="sFilename"></param>
/// <param name="leaveopen"></param>
public Raster(Raster rTemplate, Projection proj) : base(TempRasterFileInfo())
{
_temporary = true;
ExtentRectangle theExtent = new ExtentRectangle(rTemplate.Extent);
_Init(RasterDriver.GTiff, rTemplate.VerticalUnits, proj, rTemplate.Datatype, theExtent, rTemplate.origNodataVal);
Create();
}
/// <summary>
/// Is this raster concurrent with another?
/// </summary>
/// <param name="otherExtent"></param>
/// <returns></returns>
public bool IsConcurrent(ExtentRectangle otherExtent)
{
return(CellWidth == otherExtent.CellWidth &&
CellHeight == otherExtent.CellHeight &&
Left == otherExtent.Left &&
Right == otherExtent.Right &&
Top == otherExtent.Top &&
Bottom == otherExtent.Bottom);
}
/// <summary>
/// Return (x,y) integer typle representing how shifted one rectangle is relative to this one
/// </summary>
/// <param name="rect"></param>
/// <returns>Tuple (x,y)</returns>
public int[] GetTranslation(ExtentRectangle rect)
{
int ydiff = (int)(rect.Top - Top / Math.Abs(CellHeight));
int xdiff = (int)(rect.Left - Left / Math.Abs(CellWidth));
return(new int[2] {
xdiff, ydiff
});
}
/// <summary>
/// Get a tuple representing row translation between two Extentrectangles
/// </summary>
/// <param name="rExtent1"></param>
/// <param name="rExtent2"></param>
/// <returns>(colT, rowT)</returns>
public int[] GetTopCornerTranslationRowCol(ExtentRectangle rExtent2)
{
int colT = (int)((Left - rExtent2.Left) / CellWidth);
int rowT = (int)((Top - rExtent2.Top) / CellHeight);
return(new int[2] {
rowT, colT
});
}
/// <summary>
/// Determine if two extents overlap
/// </summary>
/// <param name="otherExtent"></param>
/// <returns></returns>
public bool HasOverlap(ExtentRectangle otherExtent)
{
// TODO: TEST THIS THOROUGHLY, ESPECIALLY -/+ widht heights
decimal ulx = Math.Max(Left, otherExtent.Left);
decimal uly = Math.Max(Bottom, otherExtent.Bottom);
decimal lrx = Math.Min(Right, otherExtent.Right);
decimal lry = Math.Min(Top, otherExtent.Top);
return(ulx <= lrx && uly <= lry);
}
/// <summary>
/// Pass in a list of rasters to extend the extent of this raster
/// </summary>
/// <param name="rasters"></param>
/// <returns></returns>
public static ExtentRectangle RasterExtentExpand(List <Raster> rasters)
{
ExtentRectangle newExtent = rasters[0].Extent;
foreach (Raster raster in rasters)
{
newExtent.Union(raster.Extent);
}
return(newExtent);
}
// This is mainly for testing purposes
public Raster(Raster rTemplate, bool leaveopen = false) : base()
{
_temporary = false;
ExtentRectangle theExtent = new ExtentRectangle(rTemplate.Extent);
_Init(RasterDriver.GTiff, rTemplate.VerticalUnits, rTemplate.Proj, rTemplate.Datatype, theExtent, rTemplate.origNodataVal);
if (!leaveopen)
{
UnloadDS();
}
}
/// <summary>
/// Initialization function
/// </summary>
protected void _Init(RasterDriver rdDriver, LengthUnit lUnits, Projection proj, GdalDataType dType,
ExtentRectangle theExtent, double?ndv)
{
_writepermission = false;
origNodataVal = ndv;
Datatype = dType;
Extent = theExtent;
Proj = proj;
VerticalUnits = lUnits;
driver = rdDriver;
}
/// <summary>
/// Explicit Constructor to create a new raster
/// </summary>
/// <param name="fTop"></param>
/// <param name="fLeft"></param>
/// <param name="dCellHeight"></param>
/// <param name="dCellWidth"></param>
/// <param name="nRows"></param>
/// <param name="nCols"></param>
/// <param name="dNoData"></param>
/// <param name="psDriver"></param>
/// <param name="eDataType"></param>
/// <param name="psProjection"></param>
/// <param name="psUnit"></param>
public Raster(decimal fTop, decimal fLeft, decimal dCellHeight, decimal dCellWidth, int nRows, int nCols,
double?dNoData, RasterDriver psDriver, GdalDataType dType,
string psProjection, string psUnit, bool leaveopen = false) : base()
{
_temporary = false;
ExtentRectangle theExtent = new ExtentRectangle(fTop, fLeft, dCellHeight, dCellWidth, nRows, nCols);
_Init(psDriver, UnitFromString(psUnit), new Projection(psProjection), dType, theExtent, dNoData);
if (!leaveopen)
{
UnloadDS();
}
}
/// <summary>
/// Translate the 1D array index into another rectangle's 1D array index
/// </summary>
/// <param name="origid"></param>
/// <param name="otherExtent"></param>
/// <returns>the transformed ID, -1 if it's not valid</returns>
public int RelativeId(int origid, ExtentRectangle otherExtent)
{
int[] origRowCol = Id2RowCol(origid);
int[] offsetRowCol = GetTopCornerTranslationRowCol(otherExtent);
int newInd;
int newRow = origRowCol[0] + offsetRowCol[0];
int newCol = origRowCol[1] + offsetRowCol[1];
if (newCol <= 0 || newRow <= 0 || newCol > otherExtent.Cols || newRow > otherExtent.Rows)
{
newInd = -1;
}
else
{
newInd = (newRow - 1) * otherExtent.Cols + (newCol) - 1;
}
return(newInd);
}
/// <summary>
/// Transform a cell into a rectangle geometry
/// </summary>
/// <param name="row"></param>
/// <param name="col"></param>
/// <param name="ext"></param>
/// <returns></returns>
public static Geometry CellToRect(int row, int col, ExtentRectangle ext)
{
double l = (double)(ext.Left + ((col - 1) * ext.CellWidth));
double r = l + (double)ext.CellWidth;
double t = (double)(ext.Top + ((row - 1) * ext.CellHeight));
double b = t + (double)ext.CellWidth;
Geometry ring = new Geometry(wkbGeometryType.wkbLinearRing);
ring.AddPoint(l, t, 0);
ring.AddPoint(r, t, 0);
ring.AddPoint(r, b, 0);
ring.AddPoint(l, b, 0);
ring.AddPoint(l, t, 0);
Geometry extrect = new Geometry(wkbGeometryType.wkbPolygon);
extrect.AddGeometry(ring);
return(extrect);
}
public void CreateDS(Raster.RasterDriver driver, FileInfo finfo, ExtentRectangle theExtent, Projection proj, GdalDataType theType)
{
List <string> creationOpts = new List <string>();
switch (driver)
{
case Raster.RasterDriver.GTiff:
creationOpts.Add("COMPRESS=LZW");
break;
case Raster.RasterDriver.HFA:
creationOpts.Add("COMPRESS=PACKBITS");
break;
}
Driver driverobj = Gdal.GetDriverByName(Enum.GetName(typeof(Raster.RasterDriver), driver));
_ds = driverobj.Create(finfo.FullName, theExtent.Cols, theExtent.Rows, 1, theType._origType, creationOpts.ToArray());
_ds.SetGeoTransform(theExtent.Transform);
_ds.SetProjection(proj.OriginalString);
SetNoData((double)origNodataVal);
}
/// <summary>
/// Load all relevant settings from a file
/// </summary>
protected override void _initfromfile()
{
bool leaveOpen = IsOpen;
Open();
Band rBand1 = _ds.GetRasterBand(1);
GdalDataType dType = new GdalDataType(rBand1.DataType);
string sDriver = _ds.GetDriver().ShortName;
ExtentRectangle theExtent = new ExtentRectangle(_ds);
_Init(_str2driver(sDriver),
UnitFromString(rBand1.GetUnitType()),
new Projection(_ds.GetProjection()),
dType, theExtent, GetNodataVal());
if (!leaveOpen)
{
UnloadDS();
}
}
/// <summary>
/// Othoganility check for this rectangle
/// </summary>
/// <param name="otherExtent"></param>
/// <returns></returns>
public bool IsOrthogonal(ExtentRectangle otherExtent)
{
return(IsDivisible() && otherExtent.IsDivisible());
}
public bool Equals(ExtentRectangle other)
{
return(IsConcurrent(other));
}
/// <summary>
/// Copy constructor
/// </summary>
/// <param name="orig"></param>
public ExtentRectangle(ExtentRectangle orig)
{
_Init(orig.Top, orig.Left, orig.CellHeight, orig.CellWidth, orig.Rows, orig.Cols);
}
public List <Geometry> GeometriesIntersectExtent(ExtentRectangle ext)
{
List <VectorFeature> feats = FeaturesIntersectExtent(ext).Values.ToList();
return(feats.Select(x => x.Feat.GetGeometryRef()).ToList());
}