/// <summary>
/// Calculates the intersection of this extent and the other extent. A result
/// with a min greater than the max in either direction is considered invalid
/// and represents no intersection.
/// </summary>
/// <param name="other">The other extent to intersect with.</param>
public override Extent Intersection(Extent other)
{
IExtentZ zOther = other as IExtentZ;
IExtentM mOther = other as IExtentM;
Extent result = null;
if (HasZ && zOther != null && other.HasZ)
{
ExtentMZ zResult = new ExtentMZ
{
MinZ = (MinZ > zOther.MinZ) ? MinZ : zOther.MinZ,
MaxZ = (MaxZ < zOther.MaxZ) ? MaxZ : zOther.MaxZ
};
result = zResult;
}
if (HasM && mOther != null && other.HasM)
{
ExtentM mResult = result as ExtentM ?? new ExtentM();
mResult.MinM = (MinM > mOther.MinM) ? MinM : mOther.MinM;
mResult.MaxM = (MaxM < mOther.MaxM) ? MaxM : mOther.MaxM;
result = mResult;
}
else
{
result = new Extent();
}
result.MinX = (MinX > other.MinX) ? MinX : other.MinX;
result.MaxX = (MaxX < other.MaxX) ? MaxX : other.MaxX;
result.MinY = (MinY > other.MinY) ? MinY : other.MinY;
result.MaxY = (MaxY < other.MaxY) ? MaxY : other.MaxY;
return(result);
}
/// <summary>
/// Considers the ShapeType and upgrades the extent class to accommodate M and Z.
/// This is automatically called form the setter of ShapeType.
/// </summary>
public void UpgradeExtent()
{
if (_shapeType == ShapeType.MultiPointZ || _shapeType == ShapeType.PointZ ||
_shapeType == ShapeType.PolygonZ || _shapeType == ShapeType.PolyLineZ)
{
IExtentZ zTest = Extent as IExtentZ;
if (zTest == null)
{
Extent ext = new ExtentMZ();
if (_extent != null)
{
ext.CopyFrom(_extent);
}
_extent = ext;
}
// Already implements M and Z
}
else if (_shapeType == ShapeType.MultiPointM || _shapeType == ShapeType.PointM ||
_shapeType == ShapeType.PolygonM || _shapeType == ShapeType.PolyLineM)
{
IExtentM mTest = Extent as IExtentM;
if (mTest == null)
{
Extent ext = new ExtentMZ();
if (_extent != null)
{
ext.CopyFrom(_extent);
}
_extent = ext;
}
// already at least implements M
}
// No upgrade necessary
}
public void ExtentSizeCheck()
{
int count = 100000;
double w = 0;
// Measure starting point memory use
long start = GC.GetTotalMemory(true);
// Allocate a new array of count Extent classes.
// If methods don't count, should be about 3,200,000 bytes.
ExtentMZ[] memhog = new ExtentMZ[count];
for (int i = 0; i < count; i++)
{
memhog[i] = new ExtentMZ();
if (!memhog[i].IsEmpty()) w = memhog[i].Width;
}
// Obtain measurements after creating the new byte[]
long end = GC.GetTotalMemory(true);
Debug.WriteLine("width: " + w);
long size = (end - start) / count;
// Ensure that the Array stays in memory and doesn't get optimized away
Debug.WriteLine("Memory size of Extent = " + size);
// Size of Extent is 44.
// Size of ExtentM is 60
// Size of ExtentMZ is 76
}
/// <summary>
/// This reads the string and attempts to derive values from the text.
/// </summary>
public static bool TryParse(string text, out Extent result, out string nameFailed)
{
double xmin, xmax, ymin, ymax, mmin, mmax;
result = null;
if (text.Contains("Z"))
{
double zmin, zmax;
nameFailed = "Z";
ExtentMZ mz = new ExtentMZ();
if (TryExtract(text, "Z", out zmin, out zmax) == false)
{
return(false);
}
mz.MinZ = zmin;
mz.MaxZ = zmax;
nameFailed = "M";
if (TryExtract(text, "M", out mmin, out mmax) == false)
{
return(false);
}
mz.MinM = mmin;
mz.MaxM = mmax;
result = mz;
}
else if (text.Contains("M"))
{
nameFailed = "M";
ExtentM me = new ExtentM();
if (TryExtract(text, "M", out mmin, out mmax) == false)
{
return(false);
}
me.MinM = mmin;
me.MaxM = mmax;
result = me;
}
else
{
result = new Extent();
}
nameFailed = "X";
if (TryExtract(text, "X", out xmin, out xmax) == false)
{
return(false);
}
result.MinX = xmin;
result.MaxX = xmax;
nameFailed = "Y";
if (TryExtract(text, "Y", out ymin, out ymax) == false)
{
return(false);
}
result.MinY = ymin;
result.MaxY = ymax;
return(true);
}
/// <summary>
/// Produces a clone, rather than using this same object.
/// </summary>
/// <returns>Returns a copy of this object.</returns>
public override object Clone()
{
ExtentMZ copy = new ExtentMZ(MinX, MinY, MinM, MinZ, MaxX, MaxY, MaxM, MinZ);
return copy;
}
/// <summary>
/// Calculates the intersection of this extent and the other extent. A result
/// with a min greater than the max in either direction is considered invalid
/// and represents no intersection.
/// </summary>
/// <param name="other">The other extent to intersect with.</param>
public override Extent Intersection(Extent other)
{
IExtentZ zOther = other as IExtentZ;
IExtentM mOther = other as IExtentM;
Extent result = null;
if (HasZ && zOther != null && other.HasZ)
{
ExtentMZ zResult = new ExtentMZ
{
MinZ = (MinZ > zOther.MinZ) ? MinZ : zOther.MinZ,
MaxZ = (MaxZ < zOther.MaxZ) ? MaxZ : zOther.MaxZ
};
result = zResult;
}
if (HasM && mOther != null && other.HasM)
{
ExtentM mResult = result as ExtentM ?? new ExtentM();
mResult.MinM = (MinM > mOther.MinM) ? MinM : mOther.MinM;
mResult.MaxM = (MaxM < mOther.MaxM) ? MaxM : mOther.MaxM;
result = mResult;
}
else
{
result = new Extent();
}
result.MinX = (MinX > other.MinX) ? MinX : other.MinX;
result.MaxX = (MaxX < other.MaxX) ? MaxX : other.MaxX;
result.MinY = (MinY > other.MinY) ? MinY : other.MinY;
result.MaxY = (MaxY < other.MaxY) ? MaxY : other.MaxY;
return result;
}
/// <summary>
/// Produces a clone, rather than using this same object.
/// </summary>
/// <returns>Returns a copy of this object.</returns>
public override object Clone()
{
ExtentMZ copy = new ExtentMZ(MinX, MinY, MinM, MinZ, MaxX, MaxY, MaxM, MinZ);
return(copy);
}
/// <summary>
/// Considers the ShapeType and upgrades the extent class to accommodate M and Z.
/// This is automatically called form the setter of ShapeType.
/// </summary>
public void UpgradeExtent()
{
if (_shapeType == ShapeType.MultiPointZ || _shapeType == ShapeType.PointZ ||
_shapeType == ShapeType.PolygonZ || _shapeType == ShapeType.PolyLineZ)
{
IExtentZ zTest = Extent as IExtentZ;
if (zTest == null)
{
Extent ext = new ExtentMZ();
if (_extent != null) ext.CopyFrom(_extent);
_extent = ext;
}
// Already implements M and Z
}
else if (_shapeType == ShapeType.MultiPointM || _shapeType == ShapeType.PointM ||
_shapeType == ShapeType.PolygonM || _shapeType == ShapeType.PolyLineM)
{
IExtentM mTest = Extent as IExtentM;
if (mTest == null)
{
Extent ext = new ExtentMZ();
if (_extent != null) ext.CopyFrom(_extent);
_extent = ext;
}
// already at least implements M
}
// No upgrade necessary
}
/// <summary>
/// This reads the string and attempts to derive values from the text.
/// </summary>
/// <param name="text"></param>
/// <param name="result"></param>
/// <param name="nameFailed"></param>
/// <returns></returns>
public static bool TryParse(string text, out Extent result, out string nameFailed)
{
double xmin, xmax, ymin, ymax, mmin, mmax;
result = null;
if (text.Contains("Z"))
{
double zmin, zmax;
nameFailed = "Z";
ExtentMZ mz = new ExtentMZ();
if (TryExtract(text, "Z", out zmin, out zmax) == false) return false;
mz.MinZ = zmin;
mz.MaxZ = zmax;
nameFailed = "M";
if (TryExtract(text, "M", out mmin, out mmax) == false) return false;
mz.MinM = mmin;
mz.MaxM = mmax;
result = mz;
}
else if (text.Contains("M"))
{
nameFailed = "M";
ExtentM me = new ExtentM();
if (TryExtract(text, "M", out mmin, out mmax) == false) return false;
me.MinM = mmin;
me.MaxM = mmax;
result = me;
}
else
{
result = new Extent();
}
nameFailed = "X";
if (TryExtract(text, "X", out xmin, out xmax) == false) return false;
result.MinX = xmin;
result.MaxX = xmax;
nameFailed = "Y";
if (TryExtract(text, "Y", out ymin, out ymax) == false) return false;
result.MinY = ymin;
result.MaxY = ymax;
return true;
}
