Extract Stl/Amf exports to new IExportPlugin interface

Library/Export/MeshExport.cs

@@ -0,0 +1,75 @@
+/*
+Copyright (c) 2017, Matt Moening, John Lewin
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+*/
+
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using MatterHackers.DataConverters3D;
+
+namespace MatterHackers.MatterControl.Library.Export
+{
+	public static class MeshExport
+	{
+		public static async Task<bool> ExportMesh(ILibraryContentStream source, string filePathToSave)
+		{
+			try
+			{
+				if (!string.IsNullOrEmpty(filePathToSave))
+				{
+					if (Path.GetExtension(source.FileName).ToUpper() == Path.GetExtension(filePathToSave).ToUpper())
+					{
+						using (var result = await source.GetContentStream(null))
+						using (var fileStream = File.Create(filePathToSave))
+						{
+							result.Stream.CopyTo(fileStream);
+						}
+
+						return true;
+					}
+					else
+					{
+						using (var result = await source.GetContentStream(null))
+						{
+							IObject3D item = Object3D.Load(result.Stream, Path.GetExtension(source.FileName), CancellationToken.None);
+							return MeshFileIo.Save(item, filePathToSave);
+						}
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				Trace.WriteLine("Error exporting file: " + ex.Message);
+			}
+
+			return false;
+		}
+	}
+}