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compatibility with CGAL-6.0 (and 5.6.x) #13081

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lrineau
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@lrineau lrineau commented Jul 12, 2024

This patch ensures that PrusaSlicer can be compile with CGAL-6.0, or a previous version (like CGAL-5.6.2).

The main breaking change for PruseSlicer was the return type of mesh.add_property_map.

@MrArborsexual
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This patch ensures that PrusaSlicer can be compile with CGAL-6.0, or a previous version (like CGAL-5.6.2).

The main breaking change for PruseSlicer was the return type of mesh.add_property_map.

I was having issues recompiling PrusaSlicer on Gentoo, and this fixed my issue. Hopefully it gets merged soon, because most Gentoo users running "~amd64" are likely to run into issues due to CGAL updating.

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Some observations, maybe take a closer look (or ignore if inappropriate).

src/libslic3r/CutSurface.cpp Outdated Show resolved Hide resolved
@@ -4,6 +4,22 @@
///|/
#include "CutSurface.hpp"

template <typename T>
auto access_pmap(std::optional<T> opt) -> T {
return opt.value();
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Using value() could be problematic: This functions throws std::bad_optional_access when the optional value isn't set. Perhaps value_or(T()) is more appropriate, if a default value is acceptable. Or you could check if the value is set and act accordingly?

@onitake
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onitake commented Sep 29, 2024

I'm also getting these warnings, but maybe that's something that can't be fixed yet without breaking compatibility:

In file included from /usr/include/CGAL/AABB_traits.h:19,
                 from /build/slic3r-prusa/src/libslic3r/CutSurface.cpp:52:
/usr/include/CGAL/Installation/internal/deprecation_warning.h:80:6: warning: #warning "A deprecated header has been included." [-Wcpp]
   80 | #    warning "A deprecated header has been included."
      |      ^~~~~~~

/usr/include/CGAL/Installation/internal/deprecation_warning.h:81:54: note: ‘#pragma message: Warning: The header `<CGAL/AABB_traits.h>` is deprecated. Please use `<CGAL/AABB_traits_3.h>` instead. ’
   81 | #    pragma message (CGAL_INTERNAL_DEPRECATED_MESSAGE)
      |                                                      ^

Co-authored-by: Gregor Riepl <onitake@gmail.com>
@onitake
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onitake commented Sep 30, 2024

Slicer builds with the patch now, but there's still errors in a unit test:

/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp: In function ‘void CATCH2_INTERNAL_TEST_28()’:
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:907:90: error: ‘class std::optional<CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Face_index, int> >’ has no member named ‘first’
  907 |     auto face_map = cgal_object.property_map<MyMesh::Face_index, int32_t>(face_map_name).first;
      |                                                                                          ^~~~~
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:916:112: error: ‘class std::optional<CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Edge_index, IntersectingElemnt> >’ has no member named ‘first’
  916 |     auto edge_shape_map = cgal_shape.property_map<MyMesh::Edge_index, IntersectingElemnt>(edge_shape_map_name).first;
      |                                                                                                                ^~~~~
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:917:112: error: ‘class std::optional<CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Face_index, IntersectingElemnt> >’ has no member named ‘first’
  917 |     auto face_shape_map = cgal_shape.property_map<MyMesh::Face_index, IntersectingElemnt>(face_shape_map_name).first;
      |                                                                                                                ^~~~~
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:1033:39: error: no matching function for call to ‘CATCH2_INTERNAL_TEST_28()::Visitor::Visitor(<brace-enclosed initializer list>)’
 1033 |               face_map, vert_shape_map};
      |                                       ^
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:926:9: note: candidate: ‘CATCH2_INTERNAL_TEST_28()::Visitor::Visitor(const MyMesh&, const MyMesh&, CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Edge_index, IntersectingElemnt>, CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Face_index, IntersectingElemnt>, CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Face_index, int>, CGAL::Surface_mesh<CGAL::Point_3<CGAL::Epick> >::Property_map<CGAL::SM_Vertex_index, IntersectingElemnt>)’
  926 |         Visitor(const MyMesh &object, const MyMesh &shape,
      |         ^~~~~~~
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:926:9: note:   conversion of argument 3 would be ill-formed:
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:925:12: note: candidate: ‘CATCH2_INTERNAL_TEST_28()::Visitor::Visitor(const CATCH2_INTERNAL_TEST_28()::Visitor&)’
  925 |     struct Visitor : public CGAL::Polygon_mesh_processing::Corefinement::Default_visitor<MyMesh> {
      |            ^~~~~~~
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:925:12: note:   candidate expects 1 argument, 6 provided
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:925:12: note: candidate: ‘CATCH2_INTERNAL_TEST_28()::Visitor::Visitor(CATCH2_INTERNAL_TEST_28()::Visitor&&)’
/build/slic3r-prusa/tests/libslic3r/test_emboss.cpp:925:12: note:   candidate expects 1 argument, 6 provided

The property map errors can be fixed easily enough, but I'm not so sure about the Catch2 initializer list...

Edit: I spoke too soon - after patching the property map accessors, everything built without error.

Here's a very basic patch, but it's probably better to move the accessor functions to a header file.

--- a/tests/libslic3r/test_emboss.cpp
+++ b/tests/libslic3r/test_emboss.cpp
@@ -9,8 +9,16 @@
 #include <libslic3r/IntersectionPoints.hpp>
 using namespace Slic3r;
 
+template <typename T>
+auto access_pmap(std::optional<T> opt) -> T {
+    return opt.value();
+}
+
+template <typename Pair>
+auto access_pmap(Pair pair) { return pair.first; }
+
 namespace Private{
-        
+
 // calculate multiplication of ray dir to intersect - inspired by
 // segment_segment_intersection when ray dir is normalized retur distance from
 // ray point to intersection No value mean no intersection
@@ -904,8 +912,8 @@
     // identify glyph for intersected vertex
     std::string vert_shape_map_name = "v:glyph_id";
     MyMesh cgal_object = MeshBoolean::cgal2::to_cgal(cube, face_map_name);
-    auto face_map = cgal_object.property_map<MyMesh::Face_index, int32_t>(face_map_name).first;
-    auto vert_shape_map = cgal_object.add_property_map<MyMesh::Vertex_index, IntersectingElemnt>(vert_shape_map_name).first;
+    auto face_map = access_pmap(cgal_object.property_map<MyMesh::Face_index, int32_t>(face_map_name));
+    auto vert_shape_map = access_pmap(cgal_object.add_property_map<MyMesh::Vertex_index, IntersectingElemnt>(vert_shape_map_name));
 
     std::string edge_shape_map_name = "e:glyph_id";
     std::string face_shape_map_name = "f:glyph_id";
@@ -913,8 +921,8 @@
 
     MyMesh cgal_shape = MeshBoolean::cgal2::to_cgal(shape, projection, 0, edge_shape_map_name, face_shape_map_name, glyph_contours);    
 
-    auto edge_shape_map = cgal_shape.property_map<MyMesh::Edge_index, IntersectingElemnt>(edge_shape_map_name).first;
-    auto face_shape_map = cgal_shape.property_map<MyMesh::Face_index, IntersectingElemnt>(face_shape_map_name).first;
+    auto edge_shape_map = access_pmap(cgal_shape.property_map<MyMesh::Edge_index, IntersectingElemnt>(edge_shape_map_name));
+    auto face_shape_map = access_pmap(cgal_shape.property_map<MyMesh::Face_index, IntersectingElemnt>(face_shape_map_name));
 
     // bool map for affected edge
     using d_prop_bool = CGAL::dynamic_edge_property_t<bool>;

@sl1pkn07
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Hi. a little rebase please?

greetings

@sl1pkn07
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sl1pkn07 commented Dec 19, 2024

[ 20%] Built target avrdude-slic3r
En el fichero incluido desde /usr/include/CGAL/AABB_traits.h:19,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/bundled_deps/libigl/igl/copyleft/cgal/closest_facet.h:17,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/bundled_deps/libigl/igl/copyleft/cgal/extract_cells.cpp:10,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/bundled_deps/libigl/igl/copyleft/cgal/extract_cells.h:114,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/bundled_deps/libigl/igl/copyleft/cgal/mesh_boolean.cpp:12,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/bundled_deps/libigl/igl/copyleft/cgal/mesh_boolean.h:226,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/src/libslic3r/MeshBoolean.cpp:14:
/usr/include/CGAL/Installation/internal/deprecation_warning.h:80:6: aviso: #warning "A deprecated header has been included." [-Wcpp]
   80 | #    warning "A deprecated header has been included."
      |      ^~~~~~~
En el fichero incluido desde /usr/include/CGAL/AABB_triangle_primitive.h:21,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/bundled_deps/libigl/igl/copyleft/cgal/closest_facet.h:18:
/usr/include/CGAL/Installation/internal/deprecation_warning.h:80:6: aviso: #warning "A deprecated header has been included." [-Wcpp]
   80 | #    warning "A deprecated header has been included."
      |      ^~~~~~~
En el fichero incluido desde /usr/include/CGAL/AABB_traits.h:19,
                 desde /tmp/makepkg/prusa-slicer-git/src/PrusaSlicer/src/libslic3r/CutSurface.cpp:43:
/usr/include/CGAL/Installation/internal/deprecation_warning.h:80:6: aviso: #warning "A deprecated header has been included." [-Wcpp]
   80 | #    warning "A deprecated header has been included."
      |      ^~~~~~~
/usr/include/CGAL/Installation/internal/deprecation_warning.h:81:54: nota: ‘#pragma message: Warning: The header `<CGAL/AABB_traits.h>` is deprecated. Please use `<CGAL/AABB_traits_3.h>` instead. ’
   81 | #    pragma message (CGAL_INTERNAL_DEPRECATED_MESSAGE)
      |                                                      ^
/usr/include/CGAL/Installation/internal/deprecation_warning.h:81:54: nota: ‘#pragma message: Warning: The header `<CGAL/AABB_triangle_primitive.h>` is deprecated. Please use `<CGAL/AABB_triangle_primitive_3.h>` instead. ’
   81 | #    pragma message (CGAL_INTERNAL_DEPRECATED_MESSAGE)
      |                                                      ^
/usr/include/CGAL/Installation/internal/deprecation_warning.h:81:54: nota: ‘#pragma message: Warning: The header `<CGAL/AABB_traits.h>` is deprecated. Please use `<CGAL/AABB_traits_3.h>` instead. ’
   81 | #    pragma message (CGAL_INTERNAL_DEPRECATED_MESSAGE)
      |                                                      ^
        [ 20%] Linking CXX static library liblibslic3r_cgal.a                                                  ^

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