partial void PointsCustomParse(OverlayStream stream, long finalPos, int offset, RecordType type, PreviousParse lastParsed)
{
if (stream.Complete)
{
return;
}
var subMeta = stream.GetSubrecord();
if (subMeta.RecordType != RecordTypes.PGRP)
{
return;
}
stream.Position += subMeta.HeaderLength;
var pointBytes = stream.ReadMemory(subMeta.ContentLength);
subMeta = stream.GetSubrecord();
switch (subMeta.RecordTypeInt)
{
case 0x52524750: // "PGRR":
stream.Position += subMeta.HeaderLength;
var connBytes = stream.ReadMemory(subMeta.ContentLength);
this.Points = BinaryOverlayList.FactoryByLazyParse <IRoadPointGetter>(
pointBytes,
_package,
getter: (s, p) =>
{
int numPts = pointBytes.Length / RoadBinaryCreateTranslation.POINT_LEN;
RoadPoint[] points = new RoadPoint[numPts];
var connFloats = connBytes.Span.AsFloatSpan();
for (int i = 0; i < numPts; i++)
{
var pt = RoadBinaryCreateTranslation.ReadPathGridPoint(s, out var numConn);
s = s.Slice(RoadBinaryCreateTranslation.POINT_LEN);
P3Float[] conns = new P3Float[numConn];
for (int j = 0; j < numConn; j++)
{
conns[j] = new P3Float(
x: connFloats[0],
y: connFloats[1],
z: connFloats[2]);
connFloats = connFloats.Slice(3);
}
pt.Connections.AddRange(conns);
points[i] = pt;
}
return(points);
});
break;
default:
this.Points = BinaryOverlayList.FactoryByStartIndex <IRoadPointGetter>(
pointBytes,
_package,
itemLength: RoadBinaryCreateTranslation.POINT_LEN,
getter: (s, p) => RoadBinaryCreateTranslation.ReadPathGridPoint(s, out var numConn));
break;
}
}
partial void PointToPointConnectionsCustomParse(OverlayStream stream, long finalPos, int offset, RecordType type, int?lastParsed)
{
var dataFrame = stream.ReadSubrecordFrame();
uint ptCount = BinaryPrimitives.ReadUInt16LittleEndian(dataFrame.Content);
var pgrpMeta = stream.GetSubrecord();
if (pgrpMeta.RecordType != PathGridBinaryCreateTranslation.PGRP)
{
return;
}
stream.Position += pgrpMeta.HeaderLength;
var pointData = stream.ReadMemory(pgrpMeta.ContentLength);
var bytePointsNum = pgrpMeta.ContentLength / PathGridBinaryCreateTranslation.POINT_LEN;
if (bytePointsNum != ptCount)
{
throw new ArgumentException($"Unexpected point byte length, when compared to expected point count. {pgrpMeta.ContentLength} bytes: {bytePointsNum} != {ptCount} points.");
}
bool readPGRR = false;
for (int recAttempt = 0; recAttempt < 2; recAttempt++)
{
if (stream.Complete)
{
break;
}
var subMeta = stream.GetSubrecord();
switch (subMeta.RecordType.TypeInt)
{
case 0x47414750: //"PGAG":
this._PGAGLocation = stream.Position - offset;
stream.Position += subMeta.TotalLength;
break;
case 0x52524750: // "PGRR":
stream.Position += subMeta.HeaderLength;
var connectionPtData = stream.ReadMemory(subMeta.ContentLength);
this.PointToPointConnections = BinaryOverlayList.FactoryByLazyParse <IPathGridPointGetter>(
pointData,
_package,
getter: (s, p) =>
{
var connectionInts = connectionPtData.Span.AsInt16Span();
IPathGridPointGetter[] pathGridPoints = new IPathGridPointGetter[bytePointsNum];
for (int i = 0; i < bytePointsNum; i++)
{
var pt = PathGridPointBinaryOverlay.Factory(s, p);
pt.Connections.AddRange(connectionInts.Slice(0, pt.NumConnections).ToArray());
pathGridPoints[i] = pt;
s = s.Slice(16);
connectionInts = connectionInts.Slice(pt.NumConnections);
}
return(pathGridPoints);
});
readPGRR = true;
break;
default:
break;
}
}
if (!readPGRR)
{
this.PointToPointConnections = BinaryOverlayList.FactoryByStartIndex <IPathGridPointGetter>(
pointData,
this._package,
itemLength: 16,
getter: (s, p) =>
{
return(PathGridBinaryCreateTranslation.ReadPathGridPoint(s, out var numConn));
});
}
}