Merged branch 'dev_native' into lm_sla_supports_auto

Added igl library files

src/igl/opengl2/project.h

@@ -0,0 +1,47 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+//
+// Copyright (C) 2015 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_OPENGL2_PROJECT_H
+#define IGL_OPENGL2_PROJECT_H
+#include "../igl_inline.h"
+#include <Eigen/Dense>
+namespace igl
+{
+  namespace opengl2
+  {
+    // Wrapper for gluProject that uses the current GL_MODELVIEW_MATRIX,
+    // GL_PROJECTION_MATRIX, and GL_VIEWPORT
+    // Inputs:
+    //   obj*  3D objects' x, y, and z coordinates respectively
+    // Outputs:
+    //   win*  pointers to screen space x, y, and z coordinates respectively
+    // Returns return value of gluProject call
+    IGL_INLINE int project(
+      const double objX,
+      const double objY,
+      const double objZ,
+      double* winX,
+      double* winY,
+      double* winZ);
+    // Eigen wrapper
+    template <typename Derivedobj, typename Derivedwin>
+    IGL_INLINE int project(
+      const Eigen::PlainObjectBase<Derivedobj> & obj,
+      Eigen::PlainObjectBase<Derivedwin> & win);
+    // Eigen wrapper  with return
+    template <typename Derivedobj>
+    IGL_INLINE Derivedobj project(
+      const Eigen::PlainObjectBase<Derivedobj> & obj);
+  }
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "project.cpp"
+#endif
+
+#endif
+