protected static void WriteHeader(string path, BoundingBox boundingBox, List <Shape> shapes)
{
using (FileStream fs = new FileStream(path, FileMode.Create))
{
FileWriter fw = new FileWriter(fs);
//Write header
//Write file code
fw.WriteReverseInt(0, 9994);
//Write unused fields
for (int i = 0; i < 4; i++)
{
fw.WriteReverseInt(i * 4 + 4, 0);
}
//Write file length
int fileLength = 100;
switch (shapes[0].Type)
{
case ShapeType.NullType:
break;
case ShapeType.Point:
fileLength += shapes.Count * 28;
break;
case ShapeType.PolyLine:
for (int i = 0; i < shapes.Count; i++)
{
fileLength += 44 + 4 + 16 * shapes[i].Vertexes.Count + 8;
}
break;
case ShapeType.Polygon:
break;
default:
break;
}
fw.WriteReverseInt(24, fileLength / 2);
//Write version
fw.WriteInt(28, 1000);
//Write shape type
if (shapes == null)
{
fw.WriteInt(32, 0);
}
else
{
fw.WriteInt(32, (int)shapes[0].Type);
}
//Write bounding box
fw.WriteDouble(36, boundingBox.XMin);
fw.WriteDouble(44, boundingBox.YMin);
fw.WriteDouble(52, boundingBox.XMax);
fw.WriteDouble(60, boundingBox.YMax);
fw.WriteDouble(68, 0);
fw.WriteDouble(76, 0);
fw.WriteDouble(84, 0);
fw.WriteDouble(92, 0);
}
}
