update bundled_deps

bundled_deps/libigl/igl/embree/unproject_onto_mesh.h

@@ -0,0 +1,73 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+//
+// Copyright (C) 2014 Daniele Panozzo <daniele.panozzo@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_EMBREE_UNPROJECT_ONTO_MESH_H
+#define IGL_EMBREE_UNPROJECT_ONTO_MESH_H
+#include <igl/igl_inline.h>
+#include <Eigen/Core>
+
+#include <vector>
+
+namespace igl
+{
+  namespace embree
+  {
+    // Forward define
+    class EmbreeIntersector;
+    // Unproject a screen location (using the given model, proj and viewport) to find
+    // the first hit on a mesh.
+    //
+    // Inputs:
+    //    pos        screen space coordinates
+    //    F          #F by 3 face matrix
+    //    model      model matrix
+    //    proj       projection matrix
+    //    viewport   vieweport vector
+    //    ei         EmbreeIntersector containing (V,F)
+    // Outputs:
+    //    fid        id of the first face hit
+    //    bc         barycentric coordinates of hit
+    // Returns true if there is a hit
+    IGL_INLINE bool unproject_onto_mesh(
+      const Eigen::Vector2f& pos,
+      const Eigen::MatrixXi& F,
+      const Eigen::Matrix4f& model,
+      const Eigen::Matrix4f& proj,
+      const Eigen::Vector4f& viewport,
+      const EmbreeIntersector & ei,
+      int& fid,
+      Eigen::Vector3f& bc);
+    
+    // Unproject a screen location (using the given model, proj and viewport) to find
+    // the first face on the mesh and the closest vertex
+    //
+    // Inputs:
+    //    pos        screen space coordinates
+    //    F          #F by 3 face matrix
+    //    model      model matrix
+    //    proj       projection matrix
+    //    viewport   vieweport vector
+    //    ei         EmbreeIntersector containing (V,F)
+    // Outputs:
+    //    fid        id of the first face hit
+    //    vid        vertex id of the closest vertex hit
+    // Returns true if there is a hit
+    IGL_INLINE bool unproject_onto_mesh(
+      const Eigen::Vector2f& pos,
+      const Eigen::MatrixXi& F,
+      const Eigen::Matrix4f& model,
+      const Eigen::Matrix4f& proj,
+      const Eigen::Vector4f& viewport,
+      const EmbreeIntersector & ei,
+      int& fid,
+      int& vid);
+  }
+}
+#ifndef IGL_STATIC_LIBRARY
+#  include "unproject_onto_mesh.cpp"
+#endif
+#endif