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/uniformly_sample_two_manifold.h

@@ -0,0 +1,44 @@
+// 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_UNIFORMLY_SAMPLE_TWO_MANIFOLD_H
+#define IGL_UNIFORMLY_SAMPLE_TWO_MANIFOLD_H
+#include "igl_inline.h"
+#include <Eigen/Dense>
+namespace igl
+{
+  // UNIFORMLY_SAMPLE_TWO_MANIFOLD Attempt to sample a mesh uniformly by
+  // furthest point relaxation as described in "Fast Automatic Skinning
+  // Transformations"
+  //
+  // [Jacobson et al. 12] Section 3.3.
+  //
+  // Inputs:
+  //   W  #W by dim positions of mesh in weight space
+  //   F  #F by 3 indices of triangles
+  //   k  number of samplse
+  //   push  factor by which corners should be pushed away
+  // Outputs
+  //   WS  k by dim locations in weights space
+  //
+  IGL_INLINE void uniformly_sample_two_manifold(
+    const Eigen::MatrixXd & W,
+    const Eigen::MatrixXi & F, 
+    const int k, 
+    const double push,
+    Eigen::MatrixXd & WS);
+  // Find uniform sampling up to placing samples on mesh vertices
+  IGL_INLINE void uniformly_sample_two_manifold_at_vertices(
+    const Eigen::MatrixXd & OW,
+    const int k, 
+    const double push,
+    Eigen::VectorXi & S);
+}
+#ifndef IGL_STATIC_LIBRARY
+#  include "uniformly_sample_two_manifold.cpp"
+#endif
+#endif