private async Task <(string hash, GeometryInfo geoInfo, int resolution)> RebuildPreview(
IFileSource source, string filePath,
ConfigVector3?rotation, ConfigVector3?scale,
string knownHash = null)
{
var fileName = Path.GetFileName(filePath);
var fileBytes = await source
.GetFileBytesAsync(filePath)
.Timed("Reading file {0}", fileName);
var(mesh, hash) = await StlImporter
.ImportMeshAsync(fileName, fileBytes, computeHash : knownHash == null)
.Timed("Imported {0}", fileName);
var geoInfo = await GeometryInfo.FromMeshAsync(mesh, rotation, scale);
var(previewData, resolution) = await _previewBuilder
.GetPreviewImageDataAsync(mesh, rotation)
.Timed("Building preview for {0}", fileName);
StlImporter.Destroy(mesh);
await _previewStore.StorePreviewAsync(hash ?? knownHash, previewData);
return(hash, geoInfo, resolution);
}
public async Task <Mesh> GetMeshAsync(ItemPreviewModel previewModel)
{
IFileSource source = null;
string filePath = null;
_lock.Read(() => (source, filePath) = _previewModels.TryGetFileSource(previewModel));
if (source == null || filePath == null)
{
return(null);
}
var fileName = Path.GetFileName(filePath);
var fileBytes = await source
.GetFileBytesAsync(filePath)
.Timed("Reading file {0}", fileName);
var(mesh, _) = await StlImporter
.ImportMeshAsync(fileName, fileBytes, centerVertices : false, computeHash : false)
.Timed("Imported {0}", fileName);
return(mesh);
}