/// <summary>
/// Read a shapefile MultiPoint record.
/// </summary>
/// <param name="stream">Input stream.</param>
/// <param name="record">Shapefile record to be updated.</param>
private static void ReadMultipoint(Stream stream, ShapeFileRecord record)
{
// Bounding Box.
record.XMin = ShapeFile.ReadDouble64_LE(stream);
record.YMin = ShapeFile.ReadDouble64_LE(stream);
record.XMax = ShapeFile.ReadDouble64_LE(stream);
record.YMax = ShapeFile.ReadDouble64_LE(stream);
// Num Points.
int numPoints = ShapeFile.ReadInt32_LE(stream);
// Points.
for (int i = 0; i < numPoints; i++)
{
Point p = new Point();
p.X = ShapeFile.ReadDouble64_LE(stream);
p.Y = ShapeFile.ReadDouble64_LE(stream);
record.Points.Add(p);
}
}
private Bitmap getBitmap()
{
Bitmap bitmap;
float xScale = 1.0F * _bitmapWidth / _width;
float yScale = 1.0F * _bitmapHeight / _height;
if (xScale < yScale)
{
_scale = xScale;
}
else
{
_scale = yScale;
}
//_shapeTransform = new TransformGroup();
bitmap = new Bitmap(_bitmapWidth + _legendBoxWidth - _legendBoxOffsetX, _bitmapHeight + 2, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics canvas = Graphics.FromImage(bitmap))
{
using (Pen pen = new Pen(Color.Black, 1))
{
using (Brush backgroundBrush = new SolidBrush(_colorBackground))
{
String countyCode = "";
int countyOccurenceKey = 0;
canvas.FillRectangle(backgroundBrush, 0, 0, _bitmapWidth + _legendBoxWidth - _legendBoxOffsetX, _bitmapHeight + 2);
for (int recordIndex = 0; recordIndex < _shapeFile.Records.Count; recordIndex++)
{
try
{
ShapeFileRecord record = _shapeFile.Records[recordIndex];
if (_countyInformation.IsNotEmpty())
{
countyCode = record.Attributes[2].ToString();
int countyId = getCountyId(countyCode);
if (countyId > 0)
{
ISpeciesFact fact = null;
SpeciesFactList facts = null;
if (_counties.Exists(countyId))
{
try
{
facts = _countyInformation.GetSpeciesFacts(_counties.Get(countyId));
if (facts.IsNotEmpty())
{
fact = facts[0];
}
}
catch (Exception)
{
throw;
}
if (fact.IsNotNull())
{
countyOccurenceKey = fact.MainField.EnumValue.KeyInt.GetValueOrDefault(0);
}
else
{
countyOccurenceKey = 0;
}
}
else
{
countyOccurenceKey = 0;
}
}
}
else
{
countyOccurenceKey = -1;
}
for (int i = 0; i < record.NumberOfParts; i++)
{
List <Point> points = new List <Point>();
// Determine the starting index and the end index
// into the points array that defines the figure.
int start = record.Parts[i];
int end;
if (record.NumberOfParts > 1 && i != (record.NumberOfParts - 1))
{
end = record.Parts[i + 1];
}
else
{
end = record.NumberOfPoints;
}
for (int j = start; j < end; j++)
{
System.Windows.Point pt = record.Points[j];
// Transform from lon/lat to canvas coordinates.
//pt = this._shapeTransform.Transform(pt);
Point point = new Point(_legendBoxWidth - _legendBoxOffsetX + (int)((pt.X - _xMin) * _scale), _bitmapHeight - (int)((pt.Y - _yMin) * _scale));
points.Add(point);
}
using (Brush countyOccurrenceBrush = getBrush(countyOccurenceKey))
{
canvas.FillPolygon(countyOccurrenceBrush, points.ToArray());
}
canvas.DrawPolygon(pen, points.ToArray());
}
}
catch (Exception)
{
throw;
}
}
if (_countyInformation.IsEmpty())
{
using (Font font = new Font("Arial", 24 * _bitmapHeight / 708))
{
using (Brush brush = new SolidBrush(Color.Red))
{
canvas.DrawString("Information saknas", font, brush, _legendBoxWidth, _bitmapHeight / 2);
}
}
}
if (UpdateInformation.IsNotEmpty())
{
canvas.DrawImage(GetUpdateInformationBox(),
0,
0);
canvas.DrawImage(getLegendBox(), 0, _updateInformationBoxHeight);
}
else
{
canvas.DrawImage(getLegendBox(), 0, 0);
}
}
}
}
return(bitmap);
}
private Bitmap getBitmap()
{
Bitmap bitmap;
float xScale = 1.0F * _bitmapWidth / _width;
float yScale = 1.0F * _bitmapHeight / _height;
if (xScale < yScale)
{
_scale = xScale;
}
else
{
_scale = yScale;
}
bitmap = new Bitmap(_bitmapWidth + _legendBoxWidth - _legendBoxOffsetX, _bitmapHeight + 2, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics canvas = Graphics.FromImage(bitmap))
{
using (Pen pen = new Pen(_colorLine, 1))
{
using (Brush backgroundBrush = new SolidBrush(_colorBackground))
{
canvas.FillRectangle(backgroundBrush, 0, 0, _bitmapWidth + _legendBoxWidth - _legendBoxOffsetX, _bitmapHeight + 2);
//Draw background map from initialized shape file
for (int recordIndex = 0; recordIndex < _shapeFile.Records.Count; recordIndex++)
{
ShapeFileRecord record = _shapeFile.Records[recordIndex];
for (int i = 0; i < record.NumberOfParts; i++)
{
List <System.Drawing.Point> points = new List <System.Drawing.Point>();
// Determine the starting index and the end index
// into the points array that defines the figure.
int start = record.Parts[i];
int end;
if (record.NumberOfParts > 1 && i != (record.NumberOfParts - 1))
{
end = record.Parts[i + 1];
}
else
{
end = record.NumberOfPoints;
}
for (int j = start; j < end; j++)
{
System.Windows.Point pt = record.Points[j];
// Transform from lon/lat to canvas coordinates.
//pt = this._shapeTransform.Transform(pt);
System.Drawing.Point point = new System.Drawing.Point(_legendBoxWidth - _legendBoxOffsetX + (int)((pt.X - _xMin) * _scale), _bitmapHeight - (int)((pt.Y - _yMin) * _scale));
points.Add(point);
}
using (Brush countyBrush = new SolidBrush(_colorLandBackground))
{
canvas.FillPolygon(countyBrush, points.ToArray());
}
}
}
//Heat rects
if (_observationCounts.IsNotNull())
{
int radius = (Int32)Math.Round(_observationCounts[0].GridCellSize * _scale * 0.5) + 1;
long maxCount = 0;
foreach (IGridCellSpeciesObservationCount cell in _observationCounts)
{
if (cell.ObservationCount > maxCount)
{
maxCount = cell.ObservationCount;
}
}
canvas.DrawImage(getLegendBox(maxCount), 2, 2);
foreach (IGridCellSpeciesObservationCount cell in _observationCounts)
{
Double cellX = cell.OrginalGridCellCentreCoordinate.X;
Double cellY = cell.OrginalGridCellCentreCoordinate.Y;
System.Drawing.Point point = new System.Drawing.Point(_legendBoxWidth - _legendBoxOffsetX + (int)((cellX - _xMin) * _scale), _bitmapHeight - (int)((cellY - _yMin) * _scale));
using (Brush heatBrush = getHeatBrush(Math.Log(cell.ObservationCount), Math.Log(1), Math.Log(maxCount)))
{
canvas.FillRectangle(heatBrush, point.X - radius, point.Y - radius, 2 * radius, 2 * radius);
}
}
}
//Draw polygon border lines from initialized shape file
for (int recordIndex = 0; recordIndex < _shapeFile.Records.Count; recordIndex++)
{
ShapeFileRecord record = _shapeFile.Records[recordIndex];
for (int i = 0; i < record.NumberOfParts; i++)
{
List <System.Drawing.Point> points = new List <System.Drawing.Point>();
// Determine the starting index and the end index
// into the points array that defines the figure.
int start = record.Parts[i];
int end;
if (record.NumberOfParts > 1 && i != (record.NumberOfParts - 1))
{
end = record.Parts[i + 1];
}
else
{
end = record.NumberOfPoints;
}
for (int j = start; j < end; j++)
{
System.Windows.Point pt = record.Points[j];
System.Drawing.Point point = new System.Drawing.Point(_legendBoxWidth - _legendBoxOffsetX + (int)((pt.X - _xMin) * _scale), _bitmapHeight - (int)((pt.Y - _yMin) * _scale));
points.Add(point);
}
canvas.DrawPolygon(pen, points.ToArray());
}
}
}
}
}
return(bitmap);
}
