686 lines
22 KiB
C++
686 lines
22 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//
|
|
// Copyright 2015 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
|
|
// Copyright 2015 UT-Battelle, LLC.
|
|
// Copyright 2015 Los Alamos National Security.
|
|
//
|
|
// Under the terms of Contract DE-NA0003525 with NTESS,
|
|
// the U.S. Government retains certain rights in this software.
|
|
//
|
|
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
|
|
// Laboratory (LANL), the U.S. Government retains certain rights in
|
|
// this software.
|
|
//============================================================================
|
|
#ifndef vtk_m_rendering_Triangulator_h
|
|
#define vtk_m_rendering_Triangulator_h
|
|
|
|
#include <typeinfo>
|
|
#include <vtkm/cont/ArrayHandleCounting.h>
|
|
#include <vtkm/cont/CellSetPermutation.h>
|
|
#include <vtkm/cont/DataSet.h>
|
|
#include <vtkm/exec/ExecutionWholeArray.h>
|
|
#include <vtkm/rendering/raytracing/MeshConnectivityBuilder.h>
|
|
#include <vtkm/worklet/DispatcherMapField.h>
|
|
#include <vtkm/worklet/DispatcherMapTopology.h>
|
|
#include <vtkm/worklet/WorkletMapField.h>
|
|
#include <vtkm/worklet/WorkletMapTopology.h>
|
|
namespace vtkm
|
|
{
|
|
namespace rendering
|
|
{
|
|
/// \brief Triangulator creates a minimal set of triangles from a cell set.
|
|
///
|
|
/// This class creates a array of triangle indices from both 3D and 2D
|
|
/// explicit cell sets. This list can serve as input to opengl and the
|
|
/// ray tracer scene renderers. TODO: Add regular grid support
|
|
///
|
|
template <typename Device>
|
|
class Triangulator
|
|
{
|
|
private:
|
|
typedef typename vtkm::cont::ArrayHandle<vtkm::Id> IdArrayHandle;
|
|
typedef typename vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>> Vec4ArrayHandle;
|
|
typedef typename Vec4ArrayHandle::ExecutionTypes<Device>::Portal Vec4ArrayPortalType;
|
|
typedef typename IdArrayHandle::ExecutionTypes<Device>::PortalConst IdPortalConstType;
|
|
|
|
public:
|
|
template <class T>
|
|
class MemSet : public vtkm::worklet::WorkletMapField
|
|
{
|
|
T Value;
|
|
|
|
public:
|
|
VTKM_CONT
|
|
MemSet(T value)
|
|
: Value(value)
|
|
{
|
|
}
|
|
typedef void ControlSignature(FieldOut<>);
|
|
typedef void ExecutionSignature(_1);
|
|
VTKM_EXEC
|
|
void operator()(T& outValue) const { outValue = Value; }
|
|
}; //class MemSet
|
|
|
|
class CountTriangles : public vtkm::worklet::WorkletMapPointToCell
|
|
{
|
|
public:
|
|
VTKM_CONT
|
|
CountTriangles() {}
|
|
typedef void ControlSignature(CellSetIn cellset, FieldOut<>);
|
|
typedef void ExecutionSignature(CellShape, _2);
|
|
|
|
VTKM_EXEC
|
|
void operator()(vtkm::CellShapeTagGeneric shapeType, vtkm::Id& triangles) const
|
|
{
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_TRIANGLE)
|
|
triangles = 1;
|
|
else if (shapeType.Id == vtkm::CELL_SHAPE_QUAD)
|
|
triangles = 2;
|
|
else if (shapeType.Id == vtkm::CELL_SHAPE_TETRA)
|
|
triangles = 4;
|
|
else if (shapeType.Id == vtkm::CELL_SHAPE_HEXAHEDRON)
|
|
triangles = 12;
|
|
else if (shapeType.Id == vtkm::CELL_SHAPE_WEDGE)
|
|
triangles = 8;
|
|
else if (shapeType.Id == vtkm::CELL_SHAPE_PYRAMID)
|
|
triangles = 6;
|
|
else
|
|
triangles = 0;
|
|
}
|
|
|
|
VTKM_EXEC
|
|
void operator()(vtkm::CellShapeTagHexahedron vtkmNotUsed(shapeType), vtkm::Id& triangles) const
|
|
{
|
|
triangles = 12;
|
|
}
|
|
|
|
VTKM_EXEC
|
|
void operator()(vtkm::CellShapeTagQuad vtkmNotUsed(shapeType), vtkm::Id& triangles) const
|
|
{
|
|
triangles = 2;
|
|
}
|
|
}; //class CountTriangles
|
|
|
|
template <int DIM>
|
|
class TrianglulateStructured : public vtkm::worklet::WorkletMapPointToCell
|
|
{
|
|
private:
|
|
Vec4ArrayPortalType OutputIndices;
|
|
|
|
public:
|
|
typedef void ControlSignature(CellSetIn cellset, FieldInTo<>);
|
|
typedef void ExecutionSignature(FromIndices, _2);
|
|
//typedef _1 InputDomain;
|
|
VTKM_CONT
|
|
TrianglulateStructured(vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>>& outputIndices)
|
|
{
|
|
this->OutputIndices =
|
|
outputIndices.PrepareForOutput(outputIndices.GetNumberOfValues(), Device());
|
|
}
|
|
|
|
#if defined(VTKM_MSVC)
|
|
#pragma warning(push)
|
|
#pragma warning(disable : 4127) //conditional expression is constant
|
|
#endif
|
|
//TODO: Remove the if/then with templates.
|
|
template <typename CellNodeVecType>
|
|
VTKM_EXEC void operator()(const CellNodeVecType& cellIndices, const vtkm::Id& cellIndex) const
|
|
{
|
|
vtkm::Vec<vtkm::Id, 4> triangle;
|
|
if (DIM == 2)
|
|
{
|
|
const vtkm::Id triangleOffset = cellIndex * 2;
|
|
// 0-1-2
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[2];
|
|
triangle[0] = cellIndex;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
// 0-3-2
|
|
triangle[2] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
}
|
|
else if (DIM == 3)
|
|
{
|
|
const vtkm::Id triangleOffset = cellIndex * 12;
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[5];
|
|
triangle[0] = cellIndex;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 2, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[5];
|
|
OutputIndices.Set(triangleOffset + 3, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[7];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 4, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 5, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[7];
|
|
OutputIndices.Set(triangleOffset + 6, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[7];
|
|
triangle[3] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 7, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[3];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 8, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[1];
|
|
OutputIndices.Set(triangleOffset + 9, triangle);
|
|
|
|
triangle[1] = cellIndices[4];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 10, triangle);
|
|
|
|
triangle[1] = cellIndices[4];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[7];
|
|
OutputIndices.Set(triangleOffset + 11, triangle);
|
|
}
|
|
}
|
|
#if defined(VTKM_MSVC)
|
|
#pragma warning(pop)
|
|
#endif
|
|
};
|
|
|
|
|
|
class IndicesSort : public vtkm::worklet::WorkletMapField
|
|
{
|
|
public:
|
|
VTKM_CONT
|
|
IndicesSort() {}
|
|
typedef void ControlSignature(FieldInOut<>);
|
|
typedef void ExecutionSignature(_1);
|
|
VTKM_EXEC
|
|
void operator()(vtkm::Vec<vtkm::Id, 4>& triangleIndices) const
|
|
{
|
|
// first field contains the id of the cell the
|
|
// trianlge belongs to
|
|
vtkm::Id temp;
|
|
if (triangleIndices[1] > triangleIndices[3])
|
|
{
|
|
temp = triangleIndices[1];
|
|
triangleIndices[1] = triangleIndices[3];
|
|
triangleIndices[3] = temp;
|
|
}
|
|
if (triangleIndices[1] > triangleIndices[2])
|
|
{
|
|
temp = triangleIndices[1];
|
|
triangleIndices[1] = triangleIndices[2];
|
|
triangleIndices[2] = temp;
|
|
}
|
|
if (triangleIndices[2] > triangleIndices[3])
|
|
{
|
|
temp = triangleIndices[2];
|
|
triangleIndices[2] = triangleIndices[3];
|
|
triangleIndices[3] = temp;
|
|
}
|
|
}
|
|
}; //class IndicesSort
|
|
|
|
struct IndicesLessThan
|
|
{
|
|
VTKM_EXEC_CONT
|
|
bool operator()(const vtkm::Vec<vtkm::Id, 4>& a, const vtkm::Vec<vtkm::Id, 4>& b) const
|
|
{
|
|
if (a[1] < b[1])
|
|
return true;
|
|
if (a[1] > b[1])
|
|
return false;
|
|
if (a[2] < b[2])
|
|
return true;
|
|
if (a[2] > b[2])
|
|
return false;
|
|
if (a[3] < b[3])
|
|
return true;
|
|
return false;
|
|
}
|
|
};
|
|
|
|
class UniqueTriangles : public vtkm::worklet::WorkletMapField
|
|
{
|
|
public:
|
|
VTKM_CONT
|
|
UniqueTriangles() {}
|
|
typedef void ControlSignature(ExecObject, ExecObject);
|
|
typedef void ExecutionSignature(_1, _2, WorkIndex);
|
|
VTKM_EXEC
|
|
bool IsTwin(const vtkm::Vec<vtkm::Id, 4>& a, const vtkm::Vec<vtkm::Id, 4>& b) const
|
|
{
|
|
return (a[1] == b[1] && a[2] == b[2] && a[3] == b[3]);
|
|
}
|
|
VTKM_EXEC
|
|
void operator()(vtkm::exec::ExecutionWholeArrayConst<vtkm::Vec<vtkm::Id, 4>>& indices,
|
|
vtkm::exec::ExecutionWholeArray<vtkm::UInt8>& outputFlags,
|
|
const vtkm::Id& index) const
|
|
{
|
|
if (index == 0)
|
|
return;
|
|
//if we are a shared face, mark ourself and neighbor for desctruction
|
|
if (IsTwin(indices.Get(index), indices.Get(index - 1)))
|
|
{
|
|
outputFlags.Set(index, 0);
|
|
outputFlags.Set(index - 1, 0);
|
|
}
|
|
}
|
|
}; //class UniqueTriangles
|
|
|
|
class Trianglulate : public vtkm::worklet::WorkletMapPointToCell
|
|
{
|
|
private:
|
|
Vec4ArrayPortalType OutputIndices;
|
|
|
|
public:
|
|
VTKM_CONT
|
|
Trianglulate(vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>>& outputIndices,
|
|
const vtkm::Id& size)
|
|
{
|
|
this->OutputIndices = outputIndices.PrepareForOutput(size, Device());
|
|
}
|
|
typedef void ControlSignature(CellSetIn cellset, FieldInCell<>);
|
|
typedef void ExecutionSignature(_2, CellShape, PointIndices, WorkIndex);
|
|
|
|
template <typename VecType>
|
|
VTKM_EXEC void operator()(const vtkm::Id& triangleOffset,
|
|
vtkm::CellShapeTagQuad vtkmNotUsed(shapeType),
|
|
const VecType& cellIndices,
|
|
const vtkm::Id& cellId) const
|
|
{
|
|
vtkm::Vec<vtkm::Id, 4> triangle;
|
|
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[2];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[2] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
}
|
|
|
|
template <typename VecType>
|
|
VTKM_EXEC void operator()(const vtkm::Id& triangleOffset,
|
|
vtkm::CellShapeTagHexahedron vtkmNotUsed(shapeType),
|
|
const VecType& cellIndices,
|
|
const vtkm::Id& cellId) const
|
|
{
|
|
vtkm::Vec<vtkm::Id, 4> triangle;
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[5];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 2, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[5];
|
|
OutputIndices.Set(triangleOffset + 3, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[7];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 4, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 5, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[7];
|
|
OutputIndices.Set(triangleOffset + 6, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[7];
|
|
triangle[3] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 7, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[3];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 8, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[1];
|
|
OutputIndices.Set(triangleOffset + 9, triangle);
|
|
|
|
triangle[1] = cellIndices[4];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 10, triangle);
|
|
|
|
triangle[1] = cellIndices[4];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[7];
|
|
OutputIndices.Set(triangleOffset + 11, triangle);
|
|
}
|
|
|
|
template <typename VecType>
|
|
VTKM_EXEC void operator()(const vtkm::Id& triangleOffset,
|
|
vtkm::CellShapeTagGeneric shapeType,
|
|
const VecType& cellIndices,
|
|
const vtkm::Id& cellId) const
|
|
{
|
|
vtkm::Vec<vtkm::Id, 4> triangle;
|
|
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_TRIANGLE)
|
|
{
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[2];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
}
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_QUAD)
|
|
{
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[2];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[2] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
}
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_TETRA)
|
|
{
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[3];
|
|
triangle[3] = cellIndices[1];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 2, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[1];
|
|
OutputIndices.Set(triangleOffset + 3, triangle);
|
|
}
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_HEXAHEDRON)
|
|
{
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[5];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 2, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[5];
|
|
OutputIndices.Set(triangleOffset + 3, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[7];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 4, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 5, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[7];
|
|
OutputIndices.Set(triangleOffset + 6, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[7];
|
|
triangle[3] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 7, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[3];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 8, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[1];
|
|
OutputIndices.Set(triangleOffset + 9, triangle);
|
|
|
|
triangle[1] = cellIndices[4];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[6];
|
|
OutputIndices.Set(triangleOffset + 10, triangle);
|
|
|
|
triangle[1] = cellIndices[4];
|
|
triangle[2] = cellIndices[6];
|
|
triangle[3] = cellIndices[7];
|
|
OutputIndices.Set(triangleOffset + 11, triangle);
|
|
}
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_WEDGE)
|
|
{
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[2];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[0];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 2, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[5];
|
|
OutputIndices.Set(triangleOffset + 3, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[5];
|
|
OutputIndices.Set(triangleOffset + 4, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[5];
|
|
triangle[3] = cellIndices[2];
|
|
OutputIndices.Set(triangleOffset + 5, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[3];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 6, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[1];
|
|
OutputIndices.Set(triangleOffset + 7, triangle);
|
|
}
|
|
if (shapeType.Id == vtkm::CELL_SHAPE_PYRAMID)
|
|
{
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[1];
|
|
triangle[0] = cellId;
|
|
OutputIndices.Set(triangleOffset, triangle);
|
|
|
|
triangle[1] = cellIndices[1];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 1, triangle);
|
|
|
|
triangle[1] = cellIndices[2];
|
|
triangle[2] = cellIndices[3];
|
|
triangle[3] = cellIndices[4];
|
|
OutputIndices.Set(triangleOffset + 2, triangle);
|
|
|
|
triangle[1] = cellIndices[0];
|
|
triangle[2] = cellIndices[4];
|
|
triangle[3] = cellIndices[3];
|
|
OutputIndices.Set(triangleOffset + 3, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[2];
|
|
triangle[3] = cellIndices[1];
|
|
OutputIndices.Set(triangleOffset + 4, triangle);
|
|
|
|
triangle[1] = cellIndices[3];
|
|
triangle[2] = cellIndices[1];
|
|
triangle[3] = cellIndices[0];
|
|
OutputIndices.Set(triangleOffset + 5, triangle);
|
|
}
|
|
}
|
|
}; //class Trianglulate
|
|
|
|
public:
|
|
VTKM_CONT
|
|
Triangulator() {}
|
|
|
|
VTKM_CONT
|
|
void ExternalTrianlges(vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>>& outputIndices,
|
|
vtkm::Id& outputTriangles)
|
|
{
|
|
//Eliminate unseen triangles
|
|
vtkm::worklet::DispatcherMapField<IndicesSort>().Invoke(outputIndices);
|
|
vtkm::cont::DeviceAdapterAlgorithm<Device>::Sort(outputIndices, IndicesLessThan());
|
|
vtkm::cont::ArrayHandle<vtkm::UInt8> flags;
|
|
flags.Allocate(outputTriangles);
|
|
vtkm::worklet::DispatcherMapField<MemSet<vtkm::UInt8>>(MemSet<vtkm::UInt8>(1)).Invoke(flags);
|
|
//Unique triangles will have a flag = 1
|
|
vtkm::worklet::DispatcherMapField<UniqueTriangles>().Invoke(
|
|
vtkm::exec::ExecutionWholeArrayConst<vtkm::Vec<vtkm::Id, 4>>(outputIndices),
|
|
vtkm::exec::ExecutionWholeArray<vtkm::UInt8>(flags));
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>> subset;
|
|
vtkm::cont::DeviceAdapterAlgorithm<Device>::CopyIf(outputIndices, flags, subset);
|
|
outputIndices = subset;
|
|
outputTriangles = subset.GetNumberOfValues();
|
|
}
|
|
|
|
VTKM_CONT
|
|
void Run(const vtkm::cont::DynamicCellSet& cellset,
|
|
vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 4>>& outputIndices,
|
|
vtkm::Id& outputTriangles)
|
|
{
|
|
bool fastPath = false;
|
|
if (cellset.IsSameType(vtkm::cont::CellSetStructured<3>()))
|
|
{
|
|
vtkm::cont::CellSetStructured<3> cellSetStructured3D =
|
|
cellset.Cast<vtkm::cont::CellSetStructured<3>>();
|
|
|
|
raytracing::MeshConnectivityBuilder<Device> builder;
|
|
outputIndices = builder.ExternalTrianglesStructured(cellSetStructured3D);
|
|
outputTriangles = outputIndices.GetNumberOfValues();
|
|
fastPath = true;
|
|
}
|
|
else if (cellset.IsSameType(vtkm::cont::CellSetStructured<2>()))
|
|
{
|
|
vtkm::cont::CellSetStructured<2> cellSetStructured2D =
|
|
cellset.Cast<vtkm::cont::CellSetStructured<2>>();
|
|
const vtkm::Id numCells = cellSetStructured2D.GetNumberOfCells();
|
|
|
|
vtkm::cont::ArrayHandleCounting<vtkm::Id> cellIdxs(0, 1, numCells);
|
|
outputIndices.Allocate(numCells * 2);
|
|
vtkm::worklet::DispatcherMapTopology<TrianglulateStructured<2>>(
|
|
TrianglulateStructured<2>(outputIndices))
|
|
.Invoke(cellSetStructured2D, cellIdxs);
|
|
|
|
outputTriangles = numCells * 2;
|
|
}
|
|
else
|
|
{
|
|
vtkm::cont::ArrayHandle<vtkm::Id> trianglesPerCell;
|
|
vtkm::worklet::DispatcherMapTopology<CountTriangles>(CountTriangles())
|
|
.Invoke(cellset, trianglesPerCell);
|
|
|
|
vtkm::Id totalTriangles = 0;
|
|
totalTriangles =
|
|
vtkm::cont::DeviceAdapterAlgorithm<Device>::Reduce(trianglesPerCell, vtkm::Id(0));
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::Id> cellOffsets;
|
|
vtkm::cont::DeviceAdapterAlgorithm<Device>::ScanExclusive(trianglesPerCell, cellOffsets);
|
|
outputIndices.Allocate(totalTriangles);
|
|
|
|
vtkm::worklet::DispatcherMapTopology<Trianglulate>(
|
|
Trianglulate(outputIndices, totalTriangles))
|
|
.Invoke(cellset, cellOffsets);
|
|
|
|
outputTriangles = totalTriangles;
|
|
}
|
|
|
|
//get rid of any triagles we cannot see
|
|
if (!fastPath)
|
|
{
|
|
ExternalTrianlges(outputIndices, outputTriangles);
|
|
}
|
|
}
|
|
}; // class Triangulator
|
|
}
|
|
} //namespace vtkm::rendering
|
|
#endif //vtk_m_rendering_Triangulator_h
|