update bundled_deps

bundled_deps/libigl/igl/unproject.h

@@ -0,0 +1,47 @@
+// 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_UNPROJECT_H
+#define IGL_UNPROJECT_H
+#include "igl_inline.h"
+#include <Eigen/Core>
+namespace igl
+{
+  // Eigen reimplementation of gluUnproject
+  //
+  // Inputs:
+  //   win  #P by 3 or 3-vector (#P=1) of screen space x, y, and z coordinates
+  //   model  4x4 model-view matrix
+  //   proj  4x4 projection matrix
+  //   viewport  4-long viewport vector
+  // Outputs:
+  //   scene  #P by 3 or 3-vector (#P=1) the unprojected x, y, and z coordinates
+  template <
+    typename Derivedwin,
+    typename Derivedmodel,
+    typename Derivedproj,
+    typename Derivedviewport,
+    typename Derivedscene>
+  IGL_INLINE void unproject(
+    const Eigen::MatrixBase<Derivedwin>&  win,
+    const Eigen::MatrixBase<Derivedmodel>& model,
+    const Eigen::MatrixBase<Derivedproj>& proj,
+    const Eigen::MatrixBase<Derivedviewport>&  viewport,
+    Eigen::PlainObjectBase<Derivedscene> & scene);
+  template <typename Scalar>
+  IGL_INLINE Eigen::Matrix<Scalar,3,1> unproject(
+    const Eigen::Matrix<Scalar,3,1>&  win,
+    const Eigen::Matrix<Scalar,4,4>& model,
+    const Eigen::Matrix<Scalar,4,4>& proj,
+    const Eigen::Matrix<Scalar,4,1>&  viewport);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "unproject.cpp"
+#endif
+
+#endif