public async Task <byte[]> GetData(StandardChunkMetadata template, TraceListener log)
{
var computedChunk = await GetComputedChunk(template, log);
string fileName = computedChunk.Item1;
byte[] imageData = computedChunk.Item2;
if (computedChunk.Item2 != null)
{
log?.WriteLine("Cached " + description + " chunk (" + template.ToString() + ") file exists: " + fileName);
return(computedChunk.Item2);
}
log?.WriteLine("Cached " + description + " chunk (" + template.ToString() + ") file does not exist: " + fileName + ", so starting generation...");
MemoryStream ms = null;
try
{
var pixels = await Images.Current.GetData(template, log);
if (pixels != null)
{
ms = Utils.GetBitmap(pixels, a => a, OutputType.JPEG);
}
}
catch
{
}
if (ms == null)
{
throw new MountainViewException("Source image not found for chunk " + template.ToString());
}
imageData = new byte[ms.Length];
ms.Seek(0, SeekOrigin.Begin);
ms.Read(imageData, 0, imageData.Length);
await WriteChunk(imageData, fileName, log);
log?.WriteLine("Finished generation of " + description + " cached chunk (" + template.ToString() + ") file: " + fileName);
return(imageData);
}
public async Task <FriendlyMesh> GetData(StandardChunkMetadata template, TraceListener log)
{
var computedChunk = await GetComputedChunk(template, log);
string fileName = computedChunk.Item1;
FriendlyMesh ret = computedChunk.Item2;
if (computedChunk.Item2 != null)
{
log?.WriteLine("Cached " + description + " chunk (" + template.ToString() + ") file exists: " + fileName);
return(computedChunk.Item2);
}
log?.WriteLine("Cached " + description + " chunk (" + template.ToString() + ") file does not exist: " + fileName + ", so starting generation...");
ChunkHolder <float> pixels2 = null;
try
{
pixels2 = await Heights.Current.GetData(template, log);
}
catch
{
}
if (pixels2 == null)
{
// throw new InvalidOperationException("Source heights not found for chunk " + template.ToString());
return(null);
}
ret = new FriendlyMesh(
template.LatSteps, template.LonSteps,
template.LatLo, template.LonLo,
template.LatHi, template.LonHi,
pixels2.Data, log);
await WriteChunk(ret, fileName, log);
log?.WriteLine("Finished generation of " + description + " cached chunk (" + template.ToString() + ") file: " + fileName);
return(ret);
}
public async Task <ChunkHolder <T> > GetData(StandardChunkMetadata template, TraceListener log)
{
var computedChunk = await GetComputedChunk(template, log);
string fileName = computedChunk.Item1;
ChunkHolder <T> ret = computedChunk.Item2;
if (computedChunk.Item2 != null)
{
log?.WriteLine("Cached " + description + " chunk file exists: " + fileName);
return(computedChunk.Item2);
}
log?.WriteLine("Cached " + description + " chunk file does not exist: " + fileName);
if (template.ZoomLevel <= this.SourceDataZoom)
{
throw new MountainViewException("Source data is missing for chunk " + template.ToString());
//log?.WriteLine("Starting generation...");
//ret = await GenerateData(template, log);
//await WriteChunk(ret, fileName, log);
//log?.WriteLine("Finished generation of " + description + " cached chunk file: " + fileName);
//return ret;
}
log?.WriteLine("Need to interpolate from lower zoom data");
var parent = template.GetParentChunk();
var chunks = new ChunkHolder <T>[] { await GetData(parent, log) };
ret = new ChunkHolder <T>(
template.LatSteps, template.LonSteps,
template.LatLo, template.LonLo,
template.LatHi, template.LonHi,
null,
toDouble,
fromDouble);
ret.RenderChunksInto(chunks, aggregate, log);
await WriteChunk(ret, fileName, log);
log?.WriteLine("Finished generation of " + description + " cached chunk file: " + fileName);
return(ret);
}