Removing QuickHull dependency

.github/workflows/manifold.yml

@@ -65,7 +65,7 @@ jobs:
         cd ../
         lcov --capture --gcov-tool gcov-${{ matrix.gcc }} --ignore-errors mismatch --directory . --output-file ./code_coverage_test.info
         lcov --add-tracefile ./code_coverage_init.info --add-tracefile ./code_coverage_test.info --output-file ./code_coverage_total.info
-        lcov --remove ./code_coverage_total.info '/usr/*' '*/third_party/*' '*/test/*' '*/extras/*' '*/bindings/*' --output-file ./code_coverage.info
+        lcov --remove ./code_coverage_total.info '/usr/*' '*/test/*' '*/extras/*' '*/bindings/*' --output-file ./code_coverage.info
         cd ../
     - uses: codecov/codecov-action@v4
       if: matrix.parallel_backend == 'NONE'

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "src/third_party/quickhull"]
-	path = src/third_party/quickhull
-	url = https://github.com/akuukka/quickhull

src/CMakeLists.txt

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# do not add third_party installations
-add_subdirectory(third_party EXCLUDE_FROM_ALL)
 add_subdirectory(utilities)
 add_subdirectory(collider)
 add_subdirectory(cross_section)

src/manifold/CMakeLists.txt

@@ -22,7 +22,7 @@ target_include_directories(${PROJECT_NAME} PUBLIC
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>)
 target_link_libraries(${PROJECT_NAME}
     PUBLIC utilities
-    PRIVATE $<BUILD_INTERFACE:collider> polygon ${MANIFOLD_INCLUDE} quickhull
+    PRIVATE $<BUILD_INTERFACE:collider> polygon ${MANIFOLD_INCLUDE}
 )
 
 target_compile_options(${PROJECT_NAME} PRIVATE ${MANIFOLD_FLAGS})

src/manifold/src/manifold.cpp

@@ -16,11 +16,11 @@
 #include <map>
 #include <numeric>
 
-#include "QuickHull.hpp"
 #include "boolean3.h"
 #include "csg_tree.h"
 #include "impl.h"
 #include "par.h"
+#include "quickhull.h"
 
 namespace {
 using namespace manifold;
@@ -919,12 +919,12 @@ Manifold Manifold::Hull(const std::vector<glm::vec3>& pts) {
   const int numVert = pts.size();
   if (numVert < 4) return Manifold();
 
-  std::vector<quickhull::Vector3<double>> vertices(numVert);
+  std::vector<glm::dvec3> vertices(numVert);
   for (int i = 0; i < numVert; i++) {
     vertices[i] = {pts[i].x, pts[i].y, pts[i].z};
   }
 
-  quickhull::QuickHull<double> qh;
+  QuickHull qh;
   // bools: correct triangle winding, and use original indices
   auto hull = qh.getConvexHull(vertices, false, true);
   const auto& triangles = hull.getIndexBuffer();