mirror of
https://gitlab.kitware.com/vtk/vtk-m
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93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_internal_ArrayPortalUniformPointCoordinates_h
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#define vtk_m_internal_ArrayPortalUniformPointCoordinates_h
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#include <vtkm/Assert.h>
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#include <vtkm/Types.h>
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namespace vtkm
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{
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namespace internal
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{
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/// \brief An implicit array port that computes point coordinates for a uniform grid.
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///
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class VTKM_ALWAYS_EXPORT ArrayPortalUniformPointCoordinates
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{
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public:
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using ValueType = vtkm::Vec3f;
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VTKM_EXEC_CONT
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ArrayPortalUniformPointCoordinates()
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: Dimensions(0)
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, NumberOfValues(0)
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, Origin(0, 0, 0)
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, Spacing(1, 1, 1)
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{
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}
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VTKM_EXEC_CONT
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ArrayPortalUniformPointCoordinates(vtkm::Id3 dimensions, ValueType origin, ValueType spacing)
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: Dimensions(dimensions)
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, NumberOfValues(dimensions[0] * dimensions[1] * dimensions[2])
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, Origin(origin)
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, Spacing(spacing)
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{
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}
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VTKM_EXEC_CONT
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vtkm::Id GetNumberOfValues() const { return this->NumberOfValues; }
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VTKM_EXEC_CONT
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ValueType Get(vtkm::Id index) const
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{
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VTKM_ASSERT(index >= 0);
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VTKM_ASSERT(index < this->GetNumberOfValues());
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return this->Get(vtkm::Id3(index % this->Dimensions[0],
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(index / this->Dimensions[0]) % this->Dimensions[1],
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index / (this->Dimensions[0] * this->Dimensions[1])));
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}
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VTKM_EXEC_CONT
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vtkm::Id3 GetRange3() const { return this->Dimensions; }
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VTKM_EXEC_CONT
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ValueType Get(vtkm::Id3 index) const
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{
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VTKM_ASSERT((index[0] >= 0) && (index[1] >= 0) && (index[2] >= 0));
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VTKM_ASSERT((index[0] < this->Dimensions[0]) && (index[1] < this->Dimensions[1]) &&
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(index[2] < this->Dimensions[2]));
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return ValueType(this->Origin[0] + this->Spacing[0] * static_cast<vtkm::FloatDefault>(index[0]),
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this->Origin[1] + this->Spacing[1] * static_cast<vtkm::FloatDefault>(index[1]),
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this->Origin[2] +
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this->Spacing[2] * static_cast<vtkm::FloatDefault>(index[2]));
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}
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VTKM_EXEC_CONT
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const vtkm::Id3& GetDimensions() const { return this->Dimensions; }
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VTKM_EXEC_CONT
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const ValueType& GetOrigin() const { return this->Origin; }
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VTKM_EXEC_CONT
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const ValueType& GetSpacing() const { return this->Spacing; }
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private:
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vtkm::Id3 Dimensions = { 0, 0, 0 };
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vtkm::Id NumberOfValues = 0;
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ValueType Origin = { 0.0f, 0.0f, 0.0f };
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ValueType Spacing = { 0.0f, 0.0f, 0.0f };
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};
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}
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} // namespace vtkm::internal
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#endif //vtk_m_internal_ArrayPortalUniformPointCoordinates_h
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