// Vector
// 0001 ISO/IEC 8211 Record
// VRID Vector Record Identifier
// <R> ATTV Vector Record Attributes
// VRPC Vector Record Pointer Control
// <R> VRPT Vector Record Pointer
// SGCC Coordinate Control
// <R> SG2D 2D Coordinate
// <R> SG3D 3D Coordinate
// <R> ARCC Arc/Curve
// <R> AR2D
// <R> EL2D
// <R> CT2D
public void BuildFromDataRecord(S57Reader reader, DataRecord vr, BaseFile baseFile)
{
// Record Identifier Field
var vrid = vr.Fields.GetFieldByTag("VRID");
if (vrid != null)
{
var rcnm = vrid.GetUInt32("RCNM");
var rcid = vrid.GetUInt32("RCID");
vectorName = new VectorName(rcnm, rcid);
rver = vrid.GetUInt32("RVER");
ruin = vrid.GetUInt32("RUIN");
}
// Attribute Field
var attr = vr.Fields.GetFieldByTag("ATTV");
if (attr != null)
{
Attributes = Feature.GetAttributes(attr, baseFile);
}
// VRPC Pointer Control Field
var vrpc = vr.Fields.GetFieldByTag("VRPC");
if (vrpc != null)
{
vectorPointerUpdateInstruction = vrpc.GetUInt32("VPUI");
recordPointerIndex = vrpc.GetUInt32("VPIX");
nbVectorRecordPointers = vrpc.GetUInt32("NVPT");
}
// <R> VRPT Pointer Field
var vrpt = vr.Fields.GetFieldByTag("VRPT");
if (vrpt != null)
{
VectorRecordPointers = GetVRPTs(vrpt);
}
// SGCC Coordinate Control Field
var sgcc = vr.Fields.GetFieldByTag("SGCC");
if (sgcc != null)
{
var coordinateUdpateInstruction = sgcc.GetUInt32("CCUI");
var coordinateIndex = sgcc.GetUInt32("CCIX");
var numberOfCoordinates = sgcc.GetUInt32("CCNC");
}
// Coordinate Fields
var sg2d = vr.Fields.GetFieldByTag("SG2D");
if (sg2d != null)
{
if (vectorName.Type == VectorType.connectedNode || vectorName.Type == VectorType.isolatedNode)
{
var ycoo = sg2d.GetDouble("YCOO");
var xcoo = sg2d.GetDouble("XCOO");
geometry = new Point(xcoo, ycoo);
}
else
{
var bytes = sg2d.Bytes;
int currentIndex = 0;
int length = bytes.Length - 1;
geometry = new Line();
var line = geometry as Line;
reader.BindVectorToVectorRecordPointsOf(this);
line.points.Add(VectorRecordPointers[0].Vector.geometry as Point);
while (currentIndex < length && bytes[currentIndex] != DataField.UnitTerminator)
{
var point = new Point();
for (int i = 0; i < 4; i++)
{
int tempVal = bytes[currentIndex++];
for (int j = 0; j < i; j++)
{
tempVal = tempVal << 8;
}
point.Y += tempVal;
}
point.Y /= baseFile.coordinateMultiplicationFactor;
for (int i = 0; i < 4; i++)
{
int tempVal = bytes[currentIndex++];
for (int j = 0; j < i; j++)
{
tempVal = tempVal << 8;
}
point.X += tempVal;
}
point.X /= baseFile.coordinateMultiplicationFactor;
line.points.Add(point);
}
line.points.Add(VectorRecordPointers[1].Vector.geometry as Point);
}
}
else
{
var sg3d = vr.Fields.GetFieldByTag("SG3D");
if (sg3d != null)
{
var ycoo = sg3d.GetDouble("YCOO");
var xcoo = sg3d.GetDouble("XCOO");
geometry = new Point(xcoo, ycoo);
}
else
{
var arcc = vr.Fields.GetFieldByTag("ARCC");
// Not managed
}
}
}
// Vector
// 0001 ISO/IEC 8211 Record
// VRID Vector Record Identifier
// <R> ATTV Vector Record Attributes
// VRPC Vector Record Pointer Control
// <R> VRPT Vector Record Pointer
// SGCC Coordinate Control
// <R> SG2D 2D Coordinate
// <R> SG3D 3D Coordinate
// <R> ARCC Arc/Curve
// <R> AR2D
// <R> EL2D
// <R> CT2D
public void BuildFromDataRecord(S57Reader reader, DataRecord vr, BaseFile baseFile)
{
// Record Identifier Field
var vrid = vr.Fields.GetFieldByTag("VRID");
if (vrid != null)
{
var rcnm = vrid.GetUInt32("RCNM");
var rcid = vrid.GetUInt32("RCID");
vectorName = new VectorName(rcnm, rcid);
rver = vrid.GetUInt32("RVER");
ruin = vrid.GetUInt32("RUIN");
}
// Attribute Field
var attr = vr.Fields.GetFieldByTag("ATTV");
if (attr != null)
{
Attributes = Feature.GetAttributes(attr, baseFile);
}
// VRPC Pointer Control Field
var vrpc = vr.Fields.GetFieldByTag("VRPC");
if (vrpc != null)
{
vectorPointerUpdateInstruction = vrpc.GetUInt32("VPUI");
recordPointerIndex = vrpc.GetUInt32("VPIX");
nbVectorRecordPointers = vrpc.GetUInt32("NVPT");
}
// <R> VRPT Pointer Field
var vrpt = vr.Fields.GetFieldByTag("VRPT");
if (vrpt != null)
{
VectorRecordPointers = GetVRPTs(vrpt);
}
// SGCC Coordinate Control Field
var sgcc = vr.Fields.GetFieldByTag("SGCC");
if (sgcc != null)
{
var coordinateUdpateInstruction = sgcc.GetUInt32("CCUI");
var coordinateIndex = sgcc.GetUInt32("CCIX");
var numberOfCoordinates = sgcc.GetUInt32("CCNC");
}
// Coordinate Fields
var sg2d = vr.Fields.GetFieldByTag("SG2D");
if (sg2d != null)
{
//if (vectorName.Type == VectorType.connectedNode || vectorName.Type == VectorType.isolatedNode)
if (vectorName.Type == (uint)VectorType.connectedNode || vectorName.Type == (uint)VectorType.isolatedNode)
{
var ycoo = sg2d.GetDouble("YCOO");
var xcoo = sg2d.GetDouble("XCOO");
geometry = new Point(xcoo, ycoo);
//Debug.WriteLine($"{ycoo:0.0#####}");
}
else
{
var bytes = sg2d.Bytes;
int currentIndex = 0;
int length = bytes.Length - 1;
geometry = new Line();
var line = geometry as Line;
reader.BindVectorToVectorRecordPointsOf(this);
line.points.Add(VectorRecordPointers[0].Vector.geometry as Point);
//to stop at DataField.UnitTerminator while reading coordinates is a bug: "31" can occur like any other byte to encode the XCOO or YCOO coordinates
//e.g. it is the first byte of latitude 34.6188063 (31+26880+10616832+335544320)
//while (currentIndex < length && bytes[currentIndex] != DataField.UnitTerminator) //this is a bug: unit terminator causes premature termination
while (currentIndex < length)
{
var point = new Point();
for (int i = 0; i < 4; i++)
{
int tempVal = bytes[currentIndex++];
for (int j = 0; j < i; j++)
{
tempVal = tempVal << 8;
}
point.Y += tempVal;
}
var b = point.Y;
//Debug.WriteLine($"{b:0.0#####}");
point.Y /= baseFile.coordinateMultiplicationFactor;
for (int i = 0; i < 4; i++)
{
int tempVal = bytes[currentIndex++];
for (int j = 0; j < i; j++)
{
tempVal = tempVal << 8;
}
point.X += tempVal;
}
point.X /= baseFile.coordinateMultiplicationFactor;
line.points.Add(point);
}
line.points.Add(VectorRecordPointers[1].Vector.geometry as Point);
}
}
else
{
var sg3d = vr.Fields.GetFieldByTag("SG3D");
if (sg3d != null)
{
//does this make sense here? Are there 3D points where only 2D is of interest? Alternative proposal:
//put entire method "ExtractSoundings()" here, store List under new Vector member variable "private List<SoundingData> soundingMultipoint"
//would make MultiPoint directly accessible under the respective Soundingfeature without need to call additional method.
var ycoo = sg3d.GetDouble("YCOO");
var xcoo = sg3d.GetDouble("XCOO");
geometry = new Point(xcoo, ycoo);
//Debug.WriteLine($"{ycoo:0.0#####}");
}
else
{
var arcc = vr.Fields.GetFieldByTag("ARCC");
// Not managed
}
}
}