update bundled_deps

bundled_deps/libigl/igl/unproject_in_mesh.h

@@ -0,0 +1,88 @@
+// 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_UNPROJECT_IN_MESH
+#define IGL_UNPROJECT_IN_MESH
+#include "igl_inline.h"
+#include <Eigen/Core>
+
+#include <vector>
+#include "Hit.h"
+
+namespace igl
+{
+  // Unproject a screen location (using current opengl viewport, projection, and
+  // model view) to a 3D position _inside_ a given mesh. If the ray through the
+  // given screen location (x,y) _hits_ the mesh more than twice then the 3D
+  // midpoint between the first two hits is return. If it hits once, then that
+  // point is return. If it does not hit the mesh then obj is not set.
+  //
+  // Inputs:
+  //    pos        screen space coordinates
+  //    model      model matrix
+  //    proj       projection matrix
+  //    viewport   vieweport vector
+  //    V   #V by 3 list of mesh vertex positions
+  //    F   #F by 3 list of mesh triangle indices into V
+  // Outputs:
+  //    obj        3d unprojected mouse point in mesh
+  //    hits       vector of hits
+  // Returns number of hits
+  //
+  template < typename DerivedV, typename DerivedF, typename Derivedobj>
+    IGL_INLINE int unproject_in_mesh(
+        const Eigen::Vector2f& pos,
+        const Eigen::Matrix4f& model,
+        const Eigen::Matrix4f& proj,
+        const Eigen::Vector4f& viewport,
+        const Eigen::PlainObjectBase<DerivedV> & V,
+        const Eigen::PlainObjectBase<DerivedF> & F,
+        Eigen::PlainObjectBase<Derivedobj> & obj,
+        std::vector<igl::Hit > & hits);
+  //
+  // Inputs:
+  //    pos        screen space coordinates
+  //    model      model matrix
+  //    proj       projection matrix
+  //    viewport   vieweport vector
+  //    shoot_ray  function handle that outputs first hit of a given ray
+  //      against a mesh (embedded in function handles as captured
+  //      variable/data)
+  // Outputs:
+  //    obj        3d unprojected mouse point in mesh
+  //    hits       vector of hits
+  // Returns number of hits
+  //
+  template < typename Derivedobj>
+    IGL_INLINE int unproject_in_mesh(
+        const Eigen::Vector2f& pos,
+        const Eigen::Matrix4f& model,
+        const Eigen::Matrix4f& proj,
+        const Eigen::Vector4f& viewport,
+        const std::function<
+          void(
+            const Eigen::Vector3f&,
+            const Eigen::Vector3f&,
+            std::vector<igl::Hit> &)
+            > & shoot_ray,
+        Eigen::PlainObjectBase<Derivedobj> & obj,
+        std::vector<igl::Hit > & hits);
+  template < typename DerivedV, typename DerivedF, typename Derivedobj>
+    IGL_INLINE int unproject_in_mesh(
+        const Eigen::Vector2f& pos,
+        const Eigen::Matrix4f& model,
+        const Eigen::Matrix4f& proj,
+        const Eigen::Vector4f& viewport,
+        const Eigen::PlainObjectBase<DerivedV> & V,
+        const Eigen::PlainObjectBase<DerivedF> & F,
+        Eigen::PlainObjectBase<Derivedobj> & obj);
+}
+#ifndef IGL_STATIC_LIBRARY
+#  include "unproject_in_mesh.cpp"
+#endif
+#endif
+