private static void UpdateDataProperties(TrackObjectShape shapeData, byte[] data, int readFrom)
{
shapeData.Offset1 = BitConverter.ToInt16(new[] { data[4], data[5] }, 0);
shapeData.Offset2 = BitConverter.ToInt16(new[] { data[8], data[9] }, 0);
shapeData.Offset3 = BitConverter.ToInt16(new[] { data[12], data[13] }, 0);
shapeData.Offset4 = BitConverter.ToInt16(new[] { data[16], data[17] }, 0);
shapeData.Offset5 = BitConverter.ToInt16(new[] { data[20], data[21] }, 0);
shapeData.Offset6 = BitConverter.ToInt16(new[] { data[24], data[25] }, 0);
shapeData.Offset7 = BitConverter.ToInt16(new[] { data[28], data[29] }, 0);
int data0Length = shapeData.Offset2 - shapeData.Offset1;
int data1Length = shapeData.Offset3 - shapeData.Offset2;
int data2Length = shapeData.Offset6 - shapeData.Offset3;
int data3Length = shapeData.Offset4 - shapeData.Offset6;
int data4Length = shapeData.Offset5 - shapeData.Offset4;
int data5Length = shapeData.Offset7 - shapeData.Offset5;
int data0Start = 78;
int data1Start = data0Start + data0Length;
int data2Start = data1Start + data1Length;
int data3Start = data2Start + data2Length;
int data4Start = data3Start + data3Length;
int data5Start = data4Start + data4Length;
int pointsStart = data4Start;
int pointsLength = data4Length;
int vectorsStart = data5Start;
int vectorsLength = data5Length;
//1 15638 4
//2 15642 4
//3 15646 28
//6 15674 8
//4 15682 32 (points?)
//5 15714 20 (vectors)
//7 15734 96
// 15830
// 15830
var scaleValues = GetScaleValues(data, data0Start);
shapeData.ScaleValues = scaleValues;
byte[] pointData = new byte[pointsLength];
Array.Copy(data, pointsStart, pointData, 0, pointsLength);
var points = GetPoints(pointData);
shapeData.RawPoints.AddRange(points.Item1);
//shapeData.PointsAdditionalBytes = points.Item2;
shapeData.UpdatePoints();
byte[] vectorData = new byte[vectorsLength];
Array.Copy(data, vectorsStart, vectorData, 0, vectorsLength);
var vectors = GetVectors(vectorData);
shapeData.Vectors.AddRange(vectors);
}
public static List <TrackObjectShape> Read(BinaryReader reader, int trackOffset)
{
reader.BaseStream.Position = 4124;
short count = reader.ReadInt16();
reader.BaseStream.Position += 2;
var offsets = new List <int>();
// list of offsets
for (int i = 0; i < count; i++)
{
int offset = reader.ReadInt32();
offsets.Add(offset);
}
var objects = new List <TrackObjectShape>();
var startPos = 4128;
var sortedOffsets = new List <int>();
foreach (var offset in offsets)
{
sortedOffsets.Add(offset);
}
sortedOffsets.Sort();
// foreach offset, read data between offset location and next offset location
for (int headerIndex = 0; headerIndex < offsets.Count; headerIndex++)
{
var loopOffset = offsets[headerIndex];
int nextOffset;
if (offsets.Any(of => of > loopOffset))
{
nextOffset = offsets.Where(of => of > loopOffset).ToList().Min();
}
else
{
nextOffset = trackOffset - startPos;
}
var readFrom = startPos + loopOffset;
var lengthToRead = nextOffset - loopOffset;
reader.BaseStream.Position = readFrom;
byte[] data = reader.ReadBytes(lengthToRead);
var dataIndex = sortedOffsets.IndexOf(loopOffset);
var shape = new TrackObjectShape(headerIndex, dataIndex);
shape.AllData = data;
UpdateDataProperties(shape, data, readFrom);
objects.Add(shape);
}
return(objects);
}
