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/example_fun.h

@@ -0,0 +1,31 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2013 Alec Jacobson <alecjacobson@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_EXAMPLE_FUN_H
+#define IGL_EXAMPLE_FUN_H
+
+#include "igl_inline.h"
+
+namespace igl
+{
+  // This is an example of a function, it takes a templated parameter and
+  // shovels it into cout
+  //
+  // Templates:
+  //   T  type that supports
+  // Input:
+  //   input  some input of a Printable type
+  // Returns true for the sake of returning something
+  template <typename Printable>
+  IGL_INLINE bool example_fun(const Printable & input);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "example_fun.cpp"
+#endif
+
+#endif