/// <summary>
/// Reads the collection of vertices using the provided reader
/// </summary>
/// <param name="reader"></param>
/// <param name="header"></param>
public void Read(BinaryReader reader, TTMHeader header)
{
bool readCoordinateFloats = header.VertexCoordinateSize == sizeof(float);
bool readVertexValueFloats = header.VertexValueSize == sizeof(float);
Items = new XYZ[header.NumberOfVertices];
int loopLimit = header.NumberOfVertices;
for (int i = 0; i < loopLimit; i++)
{
long RecPos = reader.BaseStream.Position;
if (readCoordinateFloats)
{
Items[i].Y = reader.ReadSingle() + header.NorthingOffsetValue;
Items[i].X = reader.ReadSingle() + header.EastingOffsetValue;
}
else
{
Items[i].Y = reader.ReadDouble() + header.NorthingOffsetValue;
Items[i].X = reader.ReadDouble() + header.EastingOffsetValue;
}
Items[i].Z = readVertexValueFloats ? reader.ReadSingle() : reader.ReadDouble();
//ReadVertex(ref Items[i]);
reader.BaseStream.Position = RecPos + header.VertexRecordSize;
}
}
/// <summary>
/// Reads in the collection of edges from the TIN model using the provided reader
/// </summary>
public void Read(BinaryReader reader, TTMHeader header)
{
Items = new int[header.NumberOfEdgeRecords];
int loopLimit = header.NumberOfEdgeRecords;
for (int i = 0; i < loopLimit; i++)
{
long RecPos = reader.BaseStream.Position;
Items[i] = Utilities.ReadInteger(reader, header.TriangleNumberSize) - 1;
reader.BaseStream.Position = RecPos + header.EdgeRecordSize;
}
}
/// <summary>
/// Reads the collection of start points from the TTM file using the provided reader
/// </summary>
/// <param name="reader"></param>
/// <param name="header"></param>
public void Read(BinaryReader reader, TTMHeader header)
{
Items = new TTMStartPoint[header.NumberOfStartPoints];
void ReadStartPoint(ref TTMStartPoint startPoint)
{
startPoint.Y = Utilities.ReadFloat(reader, header.VertexCoordinateSize) + header.NorthingOffsetValue;
startPoint.X = Utilities.ReadFloat(reader, header.VertexCoordinateSize) + header.EastingOffsetValue;
startPoint.Triangle = Utilities.ReadInteger(reader, header.TriangleNumberSize) - 1;
}
int loopLimit = header.NumberOfStartPoints;
for (int i = 0; i < loopLimit; i++)
{
long RecPos = reader.BaseStream.Position;
ReadStartPoint(ref Items[i]);
reader.BaseStream.Position = RecPos + header.StartPointRecordSize;
}
}
