private static byte[] EncodeValues(int[] values)
{
var valuesLength = values.Length;
var byteCount = 1 + 4 + valuesLength * 4; // (byte)codecType + (int)integersToRead + (int[])values
var bytesList = new List <byte>(byteCount)
{
(byte)CODECType.Null
};
bytesList.AddRange(StreamUtils.ToBytes(valuesLength));
for (int i = 0; i < valuesLength; ++i)
{
bytesList.AddRange(StreamUtils.ToBytes(values[i]));
}
return(bytesList.ToArray());
}
public VertexBasedShapeCompressedRepData(int[][] triStrips, float[][] vertexPositions, float[][] vertexNormals = null)
{
VersionNumber = 1;
NormalBinding = (byte)(vertexNormals == null ? 0 : 1);
TextureCoordBinding = 0;
ColourBinding = 0;
QuantizationParameters = new QuantizationParameters(0, 0, 0, 0);
// Next we need to make sure that first index of each tristrip is bigger by 1 than last index of previous tristrip
// Next we need to extract first index of each tristrip also add last index of last tristrip + 1
var newVertexIndex = 0;
var newTriStrips = new int[triStrips.Length][];
var newVertexPositions = new List <float[]>(vertexPositions.Length);
var newVertexNormals = vertexNormals == null ? null : new List <float[]>(vertexNormals.Length);
for (int triStripIndex = 0, triStripCount = triStrips.Length; triStripIndex < triStripCount; ++triStripIndex)
{
var triStrip = triStrips[triStripIndex];
var indicesCount = triStrip.Length;
var newTriStrip = new int[indicesCount];
for (int i = 0; i < indicesCount; ++i)
{
newTriStrip[i] = newVertexIndex++;
var vertexIndex = triStrip[i];
newVertexPositions.Add(vertexPositions[vertexIndex]);
if (vertexNormals != null)
{
newVertexNormals.Add(vertexNormals[vertexIndex]);
}
}
newTriStrips[triStripIndex] = newTriStrip;
}
TriStrips = newTriStrips;
TriStrips = newTriStrips;
Positions = newVertexPositions.ToArray();
Normals = vertexNormals != null?newVertexNormals.ToArray() : null;
//Next build vertex data from positons and normals eg x y z, xn yn zn -> repeat
//Next convert vertex data to byte array
var vertexData = new List <byte>((3 * 4 * newVertexPositions.Count) * (vertexNormals == null ? 1 : 2));
for (int i = 0, c = newVertexPositions.Count; i < c; ++i)
{
if (vertexNormals != null)
{
var vertexNormal = Normals[i];
vertexData.AddRange(StreamUtils.ToBytes(vertexNormal[0]));
vertexData.AddRange(StreamUtils.ToBytes(vertexNormal[1]));
vertexData.AddRange(StreamUtils.ToBytes(vertexNormal[2]));
}
var vertexPosition = Positions[i];
vertexData.AddRange(StreamUtils.ToBytes(vertexPosition[0]));
vertexData.AddRange(StreamUtils.ToBytes(vertexPosition[1]));
vertexData.AddRange(StreamUtils.ToBytes(vertexPosition[2]));
}
LosslessCompressedRawVertexData = new LosslessCompressedRawVertexData(vertexData.ToArray());
}