mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 18:08:59 +00:00
174 lines
4.7 KiB
C++
174 lines
4.7 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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// 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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// Copyright 2016 Sandia Corporation.
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#include <vtkm/rendering/MapperVolume.h>
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#include <vtkm/cont/Timer.h>
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#include <vtkm/cont/TryExecute.h>
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#include <vtkm/rendering/CanvasRayTracer.h>
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#include <vtkm/rendering/raytracing/Camera.h>
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#include <vtkm/rendering/raytracing/Logger.h>
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#include <vtkm/rendering/raytracing/RayOperations.h>
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#include <vtkm/rendering/raytracing/VolumeRendererStructured.h>
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#include <sstream>
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#include <typeinfo>
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#define DEFAULT_SAMPLE_DISTANCE -1.f
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namespace vtkm
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{
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namespace rendering
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{
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struct MapperVolume::InternalsType
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{
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vtkm::rendering::CanvasRayTracer* Canvas;
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vtkm::Float32 SampleDistance;
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bool CompositeBackground;
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VTKM_CONT
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InternalsType()
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: Canvas(nullptr)
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, SampleDistance(DEFAULT_SAMPLE_DISTANCE)
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, CompositeBackground(true)
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{
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}
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};
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MapperVolume::MapperVolume()
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: Internals(new InternalsType)
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{
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}
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MapperVolume::~MapperVolume()
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{
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}
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void MapperVolume::SetCanvas(vtkm::rendering::Canvas* canvas)
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{
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if (canvas != nullptr)
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{
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this->Internals->Canvas = dynamic_cast<CanvasRayTracer*>(canvas);
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if (this->Internals->Canvas == nullptr)
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{
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throw vtkm::cont::ErrorBadValue("Ray Tracer: bad canvas type. Must be CanvasRayTracer");
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}
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}
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else
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{
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this->Internals->Canvas = nullptr;
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}
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}
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vtkm::rendering::Canvas* MapperVolume::GetCanvas() const
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{
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return this->Internals->Canvas;
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}
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void MapperVolume::RenderCells(const vtkm::cont::DynamicCellSet& cellset,
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const vtkm::cont::CoordinateSystem& coords,
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const vtkm::cont::Field& scalarField,
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const vtkm::rendering::ColorTable& vtkmNotUsed(colorTable),
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const vtkm::rendering::Camera& camera,
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const vtkm::Range& scalarRange)
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{
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if (!cellset.IsSameType(vtkm::cont::CellSetStructured<3>()))
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{
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std::stringstream msg;
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std::string theType = typeid(cellset).name();
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msg << "Mapper volume: cell set type not currently supported\n";
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msg << "Type : " << theType << std::endl;
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throw vtkm::cont::ErrorBadValue(msg.str());
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}
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else
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{
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raytracing::Logger* logger = raytracing::Logger::GetInstance();
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logger->OpenLogEntry("mapper_volume");
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vtkm::cont::Timer<> tot_timer;
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vtkm::cont::Timer<> timer;
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vtkm::rendering::raytracing::VolumeRendererStructured tracer;
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vtkm::rendering::raytracing::Camera rayCamera;
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vtkm::rendering::raytracing::Ray<vtkm::Float32> rays;
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rayCamera.SetParameters(camera, *this->Internals->Canvas);
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rayCamera.CreateRays(rays, coords);
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rays.Buffers.at(0).InitConst(0.f);
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raytracing::RayOperations::MapCanvasToRays(rays, camera, *this->Internals->Canvas);
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if (this->Internals->SampleDistance != DEFAULT_SAMPLE_DISTANCE)
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{
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tracer.SetSampleDistance(this->Internals->SampleDistance);
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}
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tracer.SetData(
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coords, scalarField, cellset.Cast<vtkm::cont::CellSetStructured<3>>(), scalarRange);
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tracer.SetColorMap(this->ColorMap);
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tracer.Render(rays);
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timer.Reset();
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this->Internals->Canvas->WriteToCanvas(rays, rays.Buffers.at(0).Buffer, camera);
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if (this->Internals->CompositeBackground)
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{
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this->Internals->Canvas->BlendBackground();
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}
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vtkm::Float64 time = timer.GetElapsedTime();
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logger->AddLogData("write_to_canvas", time);
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time = tot_timer.GetElapsedTime();
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logger->CloseLogEntry(time);
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}
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}
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void MapperVolume::StartScene()
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{
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// Nothing needs to be done.
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}
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void MapperVolume::EndScene()
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{
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// Nothing needs to be done.
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}
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vtkm::rendering::Mapper* MapperVolume::NewCopy() const
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{
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return new vtkm::rendering::MapperVolume(*this);
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}
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void MapperVolume::SetSampleDistance(const vtkm::Float32 sampleDistance)
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{
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this->Internals->SampleDistance = sampleDistance;
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}
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void MapperVolume::SetCompositeBackground(const bool compositeBackground)
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{
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this->Internals->CompositeBackground = compositeBackground;
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}
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}
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} // namespace vtkm::rendering
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