examples/ImplicitFunctions.cxx

-#include <vtkm/cont/ImplicitFunctionHandle.h>
-
-#include <vtkm/worklet/DispatcherMapField.h>
-#include <vtkm/worklet/ScatterCounting.h>
-#include <vtkm/worklet/WorkletMapField.h>
-
-#include <vtkm/cont/testing/Testing.h>
-#include <vtkm/cont/testing/TestingImplicitFunction.h>
-
-namespace
-{
-
-class CutImplicitFunction : public vtkm::worklet::WorkletMapField
-{
-public:
-  using ControlSignature = void(FieldIn, FieldOut);
-  using ExecutionSignature = void(_1, _2);
-
-  CutImplicitFunction(const vtkm::ImplicitFunction* function)
-    : Function(function)
-  {
-  }
-
-  template<typename VecType>
-  VTKM_EXEC void operator()(const VecType& point, VecType& ret) const
-  {
-    if (this->Function->Value(point) > 0)
-    {
-      ret = point;
-    }
-    else
-    {
-      ret = VecType(0, 0, 0);
-    }
-  }
-
-private:
-  const vtkm::ImplicitFunction* Function;
-};
-
-void Run()
-{
-  using vtkm::cont::testing::implicit_function_detail::TestArrayEqual;
-  constexpr vtkm::Id nVerts = 16;
-  vtkm::Vec3f_32 data[nVerts] = {
-    vtkm::Vec3f_32(1, 1, 1),  vtkm::Vec3f_32(1, 1, 0),  vtkm::Vec3f_32(1, 1, -1),
-    vtkm::Vec3f_32(1, 1, -2), vtkm::Vec3f_32(1, 2, 1),  vtkm::Vec3f_32(1, 2, 0),
-    vtkm::Vec3f_32(1, 2, -1), vtkm::Vec3f_32(1, 2, -2), vtkm::Vec3f_32(2, 1, 1),
-    vtkm::Vec3f_32(2, 1, 0),  vtkm::Vec3f_32(2, 1, -1), vtkm::Vec3f_32(2, 1, -2),
-    vtkm::Vec3f_32(2, 2, 1),  vtkm::Vec3f_32(2, 2, 0),  vtkm::Vec3f_32(2, 2, -1),
-    vtkm::Vec3f_32(2, 2, -2),
-  };
-  ////
-  //// BEGIN-EXAMPLE ImplicitFunctionHandle.cxx
-  ////
-  auto coordinates =
-    vtkm::cont::make_CoordinateSystem("coordinates", data, 16, vtkm::CopyFlag::On);
-  auto handle = vtkm::cont::make_ImplicitFunctionHandle(
-    vtkm::Sphere({ 2.0f, 2.0f, -2.0f }, 2.0f));
-
-  vtkm::cont::ArrayHandle<vtkm::Vec3f> internalPoints;
-  CutImplicitFunction func(
-    handle.PrepareForExecution(vtkm::cont::DeviceAdapterTagSerial()));
-
-  vtkm::worklet::DispatcherMapField<CutImplicitFunction> dispatcher(func);
-  dispatcher.Invoke(coordinates, internalPoints);
-  ////
-  //// END-EXAMPLE ImplicitFunctionHandle.cxx
-  ////
-
-  std::array<vtkm::Vec3f, 16> values = { { { 1.0f, 1.0f, 1.0f },
-                                           { 1.0f, 1.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 1.0f, 2.0f, 1.0f },
-                                           { 1.0f, 2.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 2.0f, 1.0f, 1.0f },
-                                           { 2.0f, 1.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 2.0f, 2.0f, 1.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f },
-                                           { 0.0f, 0.0f, 0.0f } } };
-  VTKM_TEST_ASSERT(TestArrayEqual(internalPoints, values),
-                   "Results don't match internal values.");
-}
-
-} // anonymous namespace
-
-int ImplicitFunctions(int argc, char* argv[])
-{
-  return vtkm::cont::testing::Testing::Run(Run, argc, argv);
-}

examples/ProvidedFilters.cxx

@@ -93,6 +93,9 @@ void DoClipWithImplicitFunction()
   ////
   //// BEGIN-EXAMPLE ClipWithImplicitFunction.cxx
   ////
+  ////
+  //// BEGIN-EXAMPLE ImplicitFunctionHandle.cxx
+  ////
   // Parameters needed for implicit function
   vtkm::Sphere implicitFunction(vtkm::make_Vec(1, 0, 1), 0.5);
 
@@ -100,6 +103,9 @@ void DoClipWithImplicitFunction()
   vtkm::filter::ClipWithImplicitFunction clip;
   clip.SetImplicitFunction(
     vtkm::cont::make_ImplicitFunctionHandle(implicitFunction));
+  ////
+  //// END-EXAMPLE ImplicitFunctionHandle.cxx
+  ////
 
   // By default, ClipWithImplicitFunction will remove everything inside the sphere.
   // Set the invert clip flag to keep the inside of the sphere and remove everything