Winding number from libigl in DGtal

.github/workflows/build-master.yml

@@ -8,8 +8,8 @@ env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
   TESTBLACKLIST: "(testLinearStructure|testIntegerConverter|testArithmeticalDSSComputerOnSurfels)"
   CONFIG_GLOBAL:  -DBUILD_EXAMPLES=true -DBUILD_TESTING=true -DDGTAL_RANDOMIZED_TESTING_THRESHOLD=10 -DWITH_EIGEN=true 
-  CONFIG_LINUX:   -DWITH_OPENMP=true -DWITH_GMP=true -DWITH_FFTW3=true -DWARNING_AS_ERROR=ON -DWITH_HDF5=true -DWITH_QGLVIEWER=true -DWITH_CAIRO=true   -DWITH_ITK=true -DDGTAL_ENABLE_FLOATING_POINT_EXCEPTIONS=true -DBUILD_POLYSCOPE_EXAMPLES=true
-  CONFIG_MAC:     -DWITH_GMP=true -DBUILD_POLYSCOPE_EXAMPLES=true
+  CONFIG_LINUX:   -DWITH_OPENMP=true -DWITH_GMP=true -DWITH_FFTW3=true -DWITH_CGAL=true -DWITH_LIBIGL=true  -DWARNING_AS_ERROR=ON -DWITH_HDF5=true -DWITH_QGLVIEWER=true -DWITH_CAIRO=true   -DWITH_ITK=true -DDGTAL_ENABLE_FLOATING_POINT_EXCEPTIONS=true -DBUILD_POLYSCOPE_EXAMPLES=true
+  CONFIG_MAC:     -DWITH_GMP=true -DBUILD_POLYSCOPE_EXAMPLES=true -DWITH_CGAL=true -DWITH_LIBIGL=true 
   CONFIG_WINDOWS: -DWITH_OPENMP=true -DENABLE_CONAN=true #-DWITH_FFTW3=true  #-DWITH_CAIRO=true #-DWITH_ITK=true  -DWITH_GMP=true
 
 jobs:
@@ -33,11 +33,11 @@ jobs:
        if: matrix.os == 'ubuntu-latest'
        run: |
            sudo apt-get update
-           sudo apt-get install zsh libqglviewer-dev-qt5 libboost-dev ninja-build libhdf5-serial-dev libboost-dev libcairo2-dev libgmp-dev libfftw3-dev libinsighttoolkit4-dev xorg-dev libglu1-mesa-dev freeglut3-dev mesa-common-dev
+           sudo apt-get install zsh libqglviewer-dev-qt5 libboost-dev libcgal-dev ninja-build libhdf5-serial-dev libboost-dev libcairo2-dev libgmp-dev libfftw3-dev libinsighttoolkit4-dev xorg-dev libglu1-mesa-dev freeglut3-dev mesa-common-dev
 
      - name: Install macOS deps
        if: matrix.os == 'macOS-latest'
-       run: brew install boost ninja gmp libomp
+       run: brew install boost ninja gmp libomp cgal
 
      - name: Install conan
        if: matrix.os == 'windows-latest'

.github/workflows/buildAndDocumentation-PR.yml

@@ -9,8 +9,8 @@ env:
   BUILD_TYPE:    Debug
   TESTBLACKLIST: "(testLinearStructure|testIntegerConverter|testArithmeticalDSSComputerOnSurfels)"
   CONFIG_GLOBAL:  -DBUILD_EXAMPLES=true -DBUILD_TESTING=true -DDGTAL_RANDOMIZED_TESTING_THRESHOLD=10 -DWITH_EIGEN=true
-  CONFIG_LINUX:   -DUSE_CCACHE=YES -DWITH_OPENMP=true -DWITH_GMP=true -DWITH_FFTW3=true -DWARNING_AS_ERROR=ON -DWITH_HDF5=true -DWITH_QGLVIEWER=true -DWITH_CAIRO=true   -DWITH_ITK=true -DDGTAL_ENABLE_FLOATING_POINT_EXCEPTIONS=true -DBUILD_POLYSCOPE_EXAMPLES=true
-  CONFIG_MAC:     -DUSE_CCACHE=YES -DWITH_GMP=true -DBUILD_POLYSCOPE_EXAMPLES=true
+  CONFIG_LINUX:   -DUSE_CCACHE=YES -DWITH_OPENMP=true -DWITH_GMP=true -DWITH_CGAL=true -DWITH_LIBIGL=true -DWITH_FFTW3=true -DWARNING_AS_ERROR=ON -DWITH_HDF5=true -DWITH_QGLVIEWER=true -DWITH_CAIRO=true   -DWITH_ITK=true -DDGTAL_ENABLE_FLOATING_POINT_EXCEPTIONS=true -DBUILD_POLYSCOPE_EXAMPLES=true
+  CONFIG_MAC:     -DUSE_CCACHE=YES -DWITH_GMP=true -DBUILD_POLYSCOPE_EXAMPLES=true -DWITH_CGAL=true -DWITH_LIBIGL=true
   CONFIG_WINDOWS: -DWITH_OPENMP=true -DENABLE_CONAN=true #-DWITH_FFTW3=true  #-DWITH_CAIRO=true #-DWITH_ITK=true  -DWITH_GMP=true
 
 jobs:
@@ -34,11 +34,11 @@ jobs:
        if: matrix.os == 'ubuntu-latest'
        run: |
            sudo apt-get update
-           sudo apt-get install ccache zsh libqglviewer-dev-qt5 libboost-dev ninja-build libhdf5-serial-dev libboost-dev libcairo2-dev libgmp-dev libfftw3-dev libinsighttoolkit4-dev xorg-dev libglu1-mesa-dev freeglut3-dev mesa-common-dev
+           sudo apt-get install ccache zsh libqglviewer-dev-qt5 libcgal-dev libboost-dev ninja-build libhdf5-serial-dev libboost-dev libcairo2-dev libgmp-dev libfftw3-dev libinsighttoolkit4-dev xorg-dev libglu1-mesa-dev freeglut3-dev mesa-common-dev
 
      - name: Install macOS deps
        if: matrix.os == 'macOS-latest'
-       run: brew install boost ninja gmp libomp ccache
+       run: brew install boost ninja gmp libomp ccache cgal
 
      - name: Install conan
        if: matrix.os == 'windows-latest'

ChangeLog.md

@@ -10,7 +10,12 @@
     [#1689](https://github.com/DGtal-team/DGtal/pull/1689))
   - Faster build using CPM for dependency download and ccache with the cmake `USE_CCACHE=YES`option 
     (ccache must be installed). (David Coeurjolly, [#1696](https://github.com/DGtal-team/DGtal/pull/1696)) 
+  - Better documentation style using doxygen-awesome.css. (David Coeurjolly,
+  [#1697](https://github.com/DGtal-team/DGtal/pull/1697))
 
+- *Geometry*
+  - New implicit shape from point cloud using LibIGL Winding Numbers. (David Coeurjolly,
+  [#1697](https://github.com/DGtal-team/DGtal/pull/1697))
 
 ## Changes
 - *General*
@@ -68,6 +73,8 @@
     [#1691](https://github.com/DGtal-team/DGtal/pull/1691))
   - Cleanup of cmake targets when BUILD_TESTING is disabled (David Coeurjolly
     [#1698](https://github.com/DGtal-team/DGtal/pull/1698))
+  - Cleanup of the cmake script for dependency discovery (David Coeurjolly,
+    [#1697](https://github.com/DGtal-team/DGtal/pull/1697))
   - Cleaning up unnecessary ModuleSRC.cmake files (David Coeurjolly
     [#1711](https://github.com/DGtal-team/DGtal/pull/1711))
   - Fixing install path of CPM in the DGtalConfig.cmake.in (David Coeurjolly,

cmake/CheckDGtalOptionalDependencies.cmake

@@ -19,8 +19,9 @@ option(WITH_ITK "With Insight Toolkit ITK." OFF)
 option(WITH_CAIRO "With CairoGraphics." OFF)
 option(WITH_HDF5 "With HDF5." OFF)
 option(WITH_QGLVIEWER "With LibQGLViewer for 3D visualization (Qt5 required)." OFF)
-option(WITH_PATATE "With Patate library for geometry processing (Eigen required)." OFF)
+option(WITH_PATATE "With Patate library for geometry processing." OFF)
 option(WITH_FFTW3 "With FFTW3 discrete Fourier Transform library." OFF)
+option(WITH_LIBIGL "With libIGL (with copyleft/CGAL included)." OFF)
 
 #----------------------------------
 # Removing -frounding-math compile flag for clang
@@ -96,6 +97,14 @@ else (WITH_FFTW3)
   message(STATUS "      WITH_FFTW3         false   (FFTW3 discrete Fourier transform library)")
 endif()
 
+
+if (WITH_LIBIGL)
+  set(LIST_OPTION ${LIST_OPTION} [FFTW3]\ )
+  message(STATUS "      WITH_LIBIGL        true    (libIGL)")
+else (WITH_LIBIGL)
+  message(STATUS "      WITH_LIBIGL        false   (libIGL)")
+endif()
+
 message(STATUS "")
 message(STATUS "Checking the dependencies: ")
 
@@ -327,10 +336,10 @@ endif()
 # -----------------------------------------------------------------------------
 set(CGAL_FOUND_DGTAL 0)
 if(WITH_CGAL)
-  if(WITH_GMP AND  WITH_EIGEN)
+  if(WITH_GMP)
     message(STATUS "GMP and Eigen3 detected for CGAL.")
   else()
-    message(FATAL_ERROR "CGAL needs GMP and Eigen3. You must activate  WITH_GMP and WITH_EIGEN flags and have the associated package installed.")
+    message(FATAL_ERROR "CGAL needs GMP. You must activate the WITH_GMP flag and have the associated package installed.")
   endif()
 
   find_package(CGAL COMPONENTS Core)
@@ -354,11 +363,6 @@ endif()
 # -----------------------------------------------------------------------------
 set(PATATE_FOUND_DGTAL 0)
 if(WITH_PATATE)
-  if(WITH_EIGEN)
-    message(STATUS "Eigen3 detected for PATATE.")
-  else()
-    message(FATAL_ERROR "PATATE needs  Eigen3. You must activate  WITH_EIGEN flags and have the associated package installed.")
-  endif()
   find_package(Patate)
   if(PATATE_FOUND)
     target_include_directories(DGtal PUBLIC ${PATATE_INCLUDE_DIR})
@@ -406,4 +410,21 @@ if(WITH_FFTW3)
 
 endif()
 
+# -----------------------------------------------------------------------------
+# Look for libigl.
+# (They are not compulsory).
+# -----------------------------------------------------------------------------
+if(WITH_LIBIGL)
+  if (WITH_CGAL)
+    message(STATUS "DGtal/CGAL enabled.")
+  else()
+    message(FATAL_ERROR "LIBIGL requires CGAL. Please if the `WITH_CGAL=true` cmake flag.")
+  endif()
+  include(cmake/deps/libigl.cmake)
+  target_compile_definitions(DGtal PUBLIC -DWITH_LIBIGL)
+  set(DGtalLibDependencies ${DGtalLibDependencies} igl::core)
+  set(LIBIGL_FOUND_DGTAL 1)
+
+endif()
+
 message(STATUS "-------------------------------------------------------------------------------")

cmake/DGtalConfig.cmake.in

@@ -28,6 +28,11 @@ set(WITH_EIGEN 1)
 include(eigen)
 set(DGtalLibDependencies ${DGtalLibDependencies} Eigen3::Eigen)
 
+if (@LIBIGL_FOUND_DGTAL@) 
+  include(libigl)
+  set(WITH_LIBIGL 1)
+  set(DGtalLibDependencies ${DGtalLibDependencies} igl::core)
+endif()
 
 if(@GMP_FOUND_DGTAL@) #if GMP_FOUND_DGTAL
   find_package(GMP REQUIRED
@@ -108,9 +113,6 @@ if(@OPENMP_FOUND_DGTAL@) #if OPENMP_FOUND_DGTAL
   set(WITH_OPENMP 1)
 endif()
 
-
-
-
 if(@CGAL_FOUND_DGTAL@) #if CGAL_FOUND_DGTAL
   find_dependency(CGAL COMPONENTS Core
     @CGAL_HINTS@

cmake/DGtalConfigGenerator.cmake

@@ -59,6 +59,7 @@ set(_find_cmake_files
   "${PROJECT_SOURCE_DIR}/cmake/FindQGLVIEWER.cmake"
   "${PROJECT_SOURCE_DIR}/cmake/FindGMP.cmake"
   "${PROJECT_SOURCE_DIR}/cmake/deps/eigen.cmake"
+  "${PROJECT_SOURCE_DIR}/cmake/deps/libigl.cmake"
   "${PROJECT_SOURCE_DIR}/cmake/CPM.cmake"
   )
 file(COPY ${_find_cmake_files}

cmake/GeneratorSpecific.cmake

@@ -20,8 +20,7 @@ if (BUILD_TESTING)
   set(DGTAL_MYHEADERS "")
   FILE(GLOB_RECURSE DGTAL_MYHEADERS ${CMAKE_CURRENT_SOURCE_DIR}/cmake/*.cmake.in)
   add_custom_target(cmake.in SOURCES ${DGTAL_MYHEADERS})
-  set(DGTAL_MYHEADERS "")
-
+  set(DGTAL_MYHEADERS "")                                                             
   FILE(GLOB_RECURSE DGTAL_MYHEADERS ${CMAKE_CURRENT_SOURCE_DIR}/src/DGtal//base/*h)
   add_custom_target(_base SOURCES ${DGTAL_MYHEADERS})
   set(DGTAL_MYHEADERS "")

cmake/deps/libigl.cmake

@@ -0,0 +1,29 @@
+#
+# Copyright 2019 Adobe. All rights reserved.
+# This file is licensed to you under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License. You may obtain a copy
+# of the License at http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under
+# the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+# OF ANY KIND, either express or implied. See the License for the specific language
+# governing permissions and limitations under the License.
+#
+if(TARGET igl::core)
+    return()
+endif()
+
+message(STATUS "Third-party (external): creating target 'igl::core'")
+
+include(eigen)
+option(LIBIGL_INSTALL "Enable installation of libigl targets" ON)
+
+include(CPM)
+CPMAddPackage(
+    NAME libigl
+    GITHUB_REPOSITORY libigl/libigl
+    VERSION 2.5.0
+    OPTIONS LIBIGL_WITH_CGAL
+)
+
+set_target_properties(igl_core PROPERTIES FOLDER third_party/libigl)