VTK  9.3.0
vtkConstantImplicitBackend.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
3 // Funded by CEA, DAM, DIF, F-91297 Arpajon, France
4 #ifndef vtkConstantImplicitBackend_h
5 #define vtkConstantImplicitBackend_h
6 
7 #include "vtkCommonCoreModule.h"
8 #include "vtkSetGet.h" // for vtkNotUsed
9 
31 VTK_ABI_NAMESPACE_BEGIN
32 template <typename ValueType>
33 struct VTKCOMMONCORE_EXPORT vtkConstantImplicitBackend final
34 {
41  : Value(val)
42  {
43  }
44 
50  ValueType operator()(int vtkNotUsed(index)) const { return this->Value; }
51 
55  const ValueType Value;
56 };
57 VTK_ABI_NAMESPACE_END
58 
59 #endif // vtkConstantImplicitBackend_h
60 
61 #ifdef VTK_CONSTANT_BACKEND_INSTANTIATING
62 #define VTK_INSTANTIATE_CONSTANT_BACKEND(ValueType) \
63  VTK_ABI_NAMESPACE_BEGIN \
64  template struct VTKCOMMONCORE_EXPORT vtkConstantImplicitBackend<ValueType>; \
65  VTK_ABI_NAMESPACE_END
66 #endif
@ index
Definition: vtkX3D.h:246
A utility structure serving as a backend for constant implicit arrays.
ValueType operator()(int vtkNotUsed(index)) const
The main call method for the backend.
vtkConstantImplicitBackend(ValueType val)
A non-trivially contructible constructor.
const ValueType Value
The constant value stored in the backend.