/// <summary>
/// Initializes a new instance of the <see cref="ImporterConfiguration"/> class.
/// </summary>
public ImporterConfiguration()
{
#if WINDOWS_UWP
TexturePathResolver = new UWPTextureLoader();
#else
TexturePathResolver = new DefaultTexturePathResolver();
#endif
}
/// <summary>
/// Convert the assimp scene to Helix Scene.
/// </summary>
/// <param name="assimpScene">The assimp scene.</param>
/// <param name="filePath">The filePath of the model. It is used for texture loading</param>
/// <param name="texturePathResolver">Custom texture path resolver</param>
/// <param name="scene">The scene.</param>
/// <returns></returns>
public ErrorCode Load(Scene assimpScene, string filePath, out HelixToolkitScene scene, ITexturePathResolver texturePathResolver = null)
{
path = filePath;
Configuration.TexturePathResolver = texturePathResolver;
return(BuildScene(assimpScene, out scene));
}
/// <summary>
/// Loads the specified file stream. User must provider custom texture loader to load texture files.
/// </summary>
/// <param name="fileStream">The file stream.</param>
/// <param name="filePath">The filePath. Used to load texture.</param>
/// <param name="formatHint">The format hint.</param>
/// <param name="texturePathResolver">The custom texture path resolver</param>
/// <param name="scene">The scene.</param>
/// <returns></returns>
public ErrorCode Load(Stream fileStream, string filePath, string formatHint, out HelixToolkitScene scene, ITexturePathResolver texturePathResolver = null)
{
path = filePath;
ErrorCode = ErrorCode.None;
AssimpContext importer = null;
var useExtern = false;
if (Configuration.ExternalContext != null)
{
importer = Configuration.ExternalContext;
useExtern = true;
}
else
{
importer = new AssimpContext();
}
configuration.TexturePathResolver = texturePathResolver;
Clear();
scene = null;
try
{
if (!importer.IsImportFormatSupported(formatHint))
{
return(ErrorCode.FileTypeNotSupported | ErrorCode.Failed);
}
if (!useExtern && Configuration.AssimpPropertyConfig != null)
{
foreach (var config in Configuration.AssimpPropertyConfig)
{
importer.SetConfig(config);
}
}
importer.Scale = configuration.GlobalScale;
var postProcess = configuration.AssimpPostProcessSteps;
if (configuration.FlipWindingOrder)
{
postProcess |= PostProcessSteps.FlipWindingOrder;
}
var assimpScene = importer.ImportFileFromStream(fileStream, postProcess, formatHint);
return(BuildScene(assimpScene, out scene));
}
catch (Exception ex)
{
logger.LogError(ex.Message);
ErrorCode = ErrorCode.Failed;
AssimpExceptionOccurred?.Invoke(this, ex);
return(ErrorCode);
}
finally
{
if (!useExtern)
{
importer.Dispose();
}
}
}
