2022-04-01 10:33:57 +00:00
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//============================================================================
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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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#include <vtkm/rendering/MapperGlyphVector.h>
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#include <vtkm/cont/Timer.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/GlyphExtractorVector.h>
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#include <vtkm/rendering/raytracing/GlyphIntersectorVector.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/RayTracer.h>
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#include <vtkm/rendering/raytracing/SphereExtractor.h>
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#include <vtkm/rendering/raytracing/SphereIntersector.h>
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namespace vtkm
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{
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namespace rendering
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{
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MapperGlyphVector::MapperGlyphVector()
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: MapperGlyphBase()
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, GlyphType(vtkm::rendering::GlyphType::Arrow)
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{
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}
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MapperGlyphVector::~MapperGlyphVector() {}
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vtkm::rendering::GlyphType MapperGlyphVector::GetGlyphType() const
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{
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return this->GlyphType;
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}
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void MapperGlyphVector::SetGlyphType(vtkm::rendering::GlyphType glyphType)
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{
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if (!(glyphType == vtkm::rendering::GlyphType::Arrow))
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{
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throw vtkm::cont::ErrorBadValue("MapperGlyphVector: bad glyph type");
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}
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this->GlyphType = glyphType;
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}
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2023-11-08 00:20:05 +00:00
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void MapperGlyphVector::RenderCellsImpl(const vtkm::cont::UnknownCellSet& cellset,
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const vtkm::cont::CoordinateSystem& coords,
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const vtkm::cont::Field& field,
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const vtkm::cont::ColorTable& vtkmNotUsed(colorTable),
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const vtkm::rendering::Camera& camera,
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const vtkm::Range& vtkmNotUsed(fieldRange),
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const vtkm::cont::Field& vtkmNotUsed(ghostField))
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2022-04-01 10:33:57 +00:00
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{
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raytracing::Logger* logger = raytracing::Logger::GetInstance();
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vtkm::rendering::raytracing::RayTracer tracer;
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tracer.Clear();
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logger->OpenLogEntry("mapper_glyph_vector");
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vtkm::cont::Timer tot_timer;
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tot_timer.Start();
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vtkm::cont::Timer timer;
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vtkm::Bounds coordBounds = coords.GetBounds();
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vtkm::Float32 baseSize = this->BaseSize;
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2023-10-03 18:13:37 +00:00
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// The weird formulation of this condition is to handle NaN correctly.
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if (!(baseSize > 0))
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2022-04-01 10:33:57 +00:00
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{
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// set a default size
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vtkm::Float64 lx = coordBounds.X.Length();
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vtkm::Float64 ly = coordBounds.Y.Length();
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vtkm::Float64 lz = coordBounds.Z.Length();
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vtkm::Float64 mag = vtkm::Sqrt(lx * lx + ly * ly + lz * lz);
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// same as used in vtk ospray
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constexpr vtkm::Float64 heuristic = 500.;
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baseSize = static_cast<vtkm::Float32>(mag / heuristic);
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}
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vtkm::rendering::raytracing::GlyphExtractorVector glyphExtractor;
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vtkm::cont::DataSet processedDataSet = this->FilterPoints(cellset, coords, field);
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vtkm::cont::UnknownCellSet processedCellSet = processedDataSet.GetCellSet();
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vtkm::cont::CoordinateSystem processedCoords = processedDataSet.GetCoordinateSystem();
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2022-10-31 17:22:37 +00:00
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vtkm::cont::Field processedField = processedDataSet.GetField(field.GetName());
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2022-04-01 10:33:57 +00:00
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if (this->ScaleByValue)
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{
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vtkm::Float32 minSize = baseSize - baseSize * this->ScaleDelta;
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vtkm::Float32 maxSize = baseSize + baseSize * this->ScaleDelta;
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2023-07-27 20:07:19 +00:00
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if (this->Association == vtkm::cont::Field::Association::Points)
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2022-04-01 10:33:57 +00:00
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{
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glyphExtractor.ExtractCoordinates(processedCoords, processedField, minSize, maxSize);
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}
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2023-07-27 20:07:19 +00:00
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else // this->Association == vtkm::cont::Field::Association::Cells
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{
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glyphExtractor.ExtractCells(processedCellSet, processedField, minSize, maxSize);
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}
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}
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else
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{
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2023-07-27 20:07:19 +00:00
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if (this->Association == vtkm::cont::Field::Association::Points)
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{
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glyphExtractor.ExtractCoordinates(processedCoords, processedField, baseSize);
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}
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2023-07-27 20:07:19 +00:00
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else // this->Association == vtkm::cont::Field::Association::Cells
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2022-04-01 10:33:57 +00:00
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{
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glyphExtractor.ExtractCells(processedCellSet, processedField, baseSize);
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}
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}
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vtkm::Bounds shapeBounds;
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if (glyphExtractor.GetNumberOfGlyphs() > 0)
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{
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auto glyphIntersector = std::make_shared<raytracing::GlyphIntersectorVector>(this->GlyphType);
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if (this->GlyphType == vtkm::rendering::GlyphType::Arrow)
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{
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vtkm::Float32 arrowBodyRadius = 0.08f * baseSize;
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vtkm::Float32 arrowHeadRadius = 0.16f * baseSize;
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glyphIntersector->SetArrowRadii(arrowBodyRadius, arrowHeadRadius);
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}
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glyphIntersector->SetData(
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processedCoords, glyphExtractor.GetPointIds(), glyphExtractor.GetSizes());
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tracer.AddShapeIntersector(glyphIntersector);
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shapeBounds.Include(glyphIntersector->GetShapeBounds());
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}
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//
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// Create rays
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//
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vtkm::Int32 width = (vtkm::Int32)this->Canvas->GetWidth();
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vtkm::Int32 height = (vtkm::Int32)this->Canvas->GetHeight();
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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, width, height);
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RayCamera.CreateRays(Rays, shapeBounds);
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Rays.Buffers.at(0).InitConst(0.f);
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raytracing::RayOperations::MapCanvasToRays(Rays, camera, *this->Canvas);
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auto magnitudeField = glyphExtractor.GetMagnitudeField();
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auto magnitudeFieldRange = magnitudeField.GetRange().ReadPortal().Get(0);
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tracer.SetField(magnitudeField, magnitudeFieldRange);
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tracer.GetCamera() = RayCamera;
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tracer.SetColorMap(this->ColorMap);
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tracer.Render(Rays);
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timer.Start();
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this->Canvas->WriteToCanvas(Rays, Rays.Buffers.at(0).Buffer, camera);
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if (this->CompositeBackground)
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{
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this->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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vtkm::rendering::Mapper* MapperGlyphVector::NewCopy() const
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{
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return new vtkm::rendering::MapperGlyphVector(*this);
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}
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}
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} // vtkm::rendering
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