public static IEnumerable <IModel> ExtractModels(IChunk mainChunk, IPalette palette)
{
var sizeChunks = mainChunk.GetChildren <ISizeChunk>();
var voxelChunks = mainChunk.GetChildren <IVoxelChunk>();
var shapeNodeChunks = mainChunk.GetChildren <IShapeNodeChunk>();
if (sizeChunks.Length != voxelChunks.Length)
{
throw new InvalidDataException("Can not extract models, because the number of SIZE chunks does not match the number of XYZI chunks!");
}
var shapeNodeChunksQueue = new Queue <IShapeNodeChunk>(shapeNodeChunks);
var processedModels = new Dictionary <int, Model>();
int duplicateModelCount = 0;
for (int i = 0; i < shapeNodeChunks.Length; i++)
{
Vector3 size = sizeChunks[i - duplicateModelCount].Size;
var voxels = voxelChunks[i - duplicateModelCount].Voxels.Select(voxel => new Voxel(voxel.Position, palette.Colors[voxel.ColorIndex - 1])).ToArray();
int id = shapeNodeChunksQueue.Dequeue().Models[0];
if (processedModels.ContainsKey(id))
{
// Create copy of already existing model
duplicateModelCount++;
yield return(processedModels[id].GetCopy());
}
else
{
// Create new model
var model = new Model(id, size, voxels, false);
processedModels.Add(id, model);
yield return(model);
}
}
}
