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https://gitlab.kitware.com/vtk/vtk-m
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ebfb1e7389
It is now optional to give a Camera object when constructing a View. If a Camera is not specified, one is automatically set up by calling ResetToBounds on the spatial bounds of the scene. This makes it even easier to set up a view.
90 lines
2.5 KiB
C++
90 lines
2.5 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 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 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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#ifndef vtk_m_rendering_Scene_h
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#define vtk_m_rendering_Scene_h
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#include <vtkm/rendering/Actor.h>
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#include <vtkm/rendering/Camera.h>
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#include <vector>
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namespace vtkm {
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namespace rendering {
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class Scene
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{
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public:
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VTKM_CONT_EXPORT
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void AddActor(const vtkm::rendering::Actor &actor)
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{
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this->Actors.push_back(actor);
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}
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VTKM_CONT_EXPORT
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const vtkm::rendering::Actor &GetActor(vtkm::IdComponent index) const
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{
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return this->Actors[static_cast<std::size_t>(index)];
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}
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VTKM_CONT_EXPORT
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vtkm::IdComponent GetNumberOfActors() const
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{
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return static_cast<vtkm::IdComponent>(this->Actors.size());
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}
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Scene() {}
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template<typename MapperType, typename CanvasType>
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VTKM_CONT_EXPORT
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void Render(MapperType &mapper,
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CanvasType &canvas,
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vtkm::rendering::Camera &camera) const
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{
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mapper.StartScene();
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for (vtkm::IdComponent actorIndex = 0;
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actorIndex < this->GetNumberOfActors();
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actorIndex++)
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{
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const vtkm::rendering::Actor &actor = this->GetActor(actorIndex);
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actor.Render(mapper, canvas, camera);
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}
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mapper.EndScene();
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}
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vtkm::Bounds GetSpatialBounds() const
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{
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vtkm::Bounds bounds;
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for (vtkm::IdComponent actorIndex = 0;
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actorIndex < this->GetNumberOfActors();
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actorIndex++)
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{
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// accumulate all Actors' spatial bounds into the scene spatial bounds
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bounds.Include(this->GetActor(actorIndex).SpatialBounds);
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}
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return bounds;
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}
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private:
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std::vector<vtkm::rendering::Actor> Actors;
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};
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}} //namespace vtkm::rendering
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#endif //vtk_m_rendering_Scene_h
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