update bundled_deps

bundled_deps/libigl/igl/triangle/cdt.h

@@ -0,0 +1,54 @@
+#ifndef IGL_TRIANGLE_CDT_H
+#define IGL_TRIANGLE_CDT_H
+
+#include "../igl_inline.h"
+#include <Eigen/Core>
+
+namespace igl
+{
+  namespace triangle
+  {
+    // CDT Construct the constrained delaunay triangulation of the convex hull
+    // of a given set of points and segments in 2D. This differs from a direct
+    // call to triangulate because it will preprocess the input to remove
+    // duplicates and return an adjusted segment list on the output.
+    // 
+    //
+    // BACKGROUND_MESH Construct a background mesh for a (messy) texture mesh with
+    // cosntraint edges that are about to deform.
+    // 
+    // Inputs:
+    //   V  #V by 2 list of texture mesh vertices
+    //   E  #E by 2 list of constraint edge indices into V
+    //   flags  string of triangle flags should contain "-c" unless the
+    //     some subset of segments are known to enclose all other
+    //     points/segments.
+    // Outputs:
+    //   WV  #WV by 2 list of background mesh vertices 
+    //   WF  #WF by 2 list of background mesh triangle indices into WV
+    //   WE  #WE by 2 list of constraint edge indices into WV (might be smaller
+    //     than E because degenerate constraints have been removed)
+    //   J  #V list of indices into WF/WE for each vertex in V
+    //
+    template <
+      typename DerivedV, 
+      typename DerivedE,
+      typename DerivedWV,
+      typename DerivedWF,
+      typename DerivedWE,
+      typename DerivedJ>
+    IGL_INLINE void cdt(
+      const Eigen::MatrixBase<DerivedV> & V,
+      const Eigen::MatrixBase<DerivedE> & E,
+      const std::string & flags,
+      Eigen::PlainObjectBase<DerivedWV> & WV,
+      Eigen::PlainObjectBase<DerivedWF> & WF,
+      Eigen::PlainObjectBase<DerivedWE> & WE,
+      Eigen::PlainObjectBase<DerivedJ> & J);
+  }
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#include "cdt.cpp"
+#endif
+#endif