Refactor folder (#10475)

Move many third-party components' source codes from the src folder to a new folder called deps_src. The goal is to make the code structure clearer and easier to navigate.

deps_src/libigl/igl/Hit.h

@@ -0,0 +1,25 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
+//               2014 Christian Schüller <schuellchr@gmail.com> 
+//
+// This Source Code Form is subject to the terms of the Mozilla Public License 
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+// obtain one at http://mozilla.org/MPL/2.0/.
+#ifndef IGL_HIT_H
+#define IGL_HIT_H
+
+namespace igl
+{
+  // Reimplementation of the embree::Hit struct from embree1.0
+  // 
+  // TODO: template on floating point type
+  struct Hit
+  {
+    int id; // primitive id
+    int gid; // geometry id
+    float u,v; // barycentric coordinates
+    float t; // distance = direction*t to intersection
+  };
+}
+#endif