private void ReadVertexStream(Vector2[] targetArray, int arrayPos, Mesh meshData, VertexLayout.EntryInfo info)
{
Mesh.VertexStream stream = meshData.VertexStreams[info.streamIndex];
for (int i = 0; i < meshData.VertexCount; i++)
{
targetArray[i + arrayPos] = ReadVector2(info.offset, stream, i, info.dataType);
}
}
private Vector3 ReadVector3(int offset, Mesh.VertexStream vertexStream, int index, VertexLayout.Entry.DataTypes dataType)
{
Vector3 vector3 = new Vector3();
switch (dataType)
{
case VertexLayout.Entry.DataTypes.Float3:
vector3.x = BitConverter.ToSingle(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 0);
vector3.y = BitConverter.ToSingle(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 4);
vector3.z = BitConverter.ToSingle(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 8);
break;
default:
throw new InvalidDataException($"Unhandled stream DataType \"{dataType}\"");
}
return vector3;
}
private Vector2 ReadVector2(int offset, Mesh.VertexStream vertexStream, int index, VertexLayout.Entry.DataTypes dataType)
{
Vector2 vector2 = new Vector2();
switch (dataType)
{
case VertexLayout.Entry.DataTypes.Float2:
vector2.x = BitConverter.ToSingle(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 0);
vector2.y = 1.0f - BitConverter.ToSingle(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 4);
break;
case VertexLayout.Entry.DataTypes.float16_2:
vector2.x = Mathf.HalfToFloat(BitConverter.ToUInt16(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 0));
vector2.y = 1.0f - Mathf.HalfToFloat(BitConverter.ToUInt16(vertexStream.Data, (vertexStream.BytesPerVertex * index) + offset + 2));
break;
default:
throw new InvalidDataException($"Unhandled stream DataType \"{dataType}\"");
}
return vector2;
}