0be50c119d
Should make the code easier to read.
208 lines
6.4 KiB
C++
208 lines
6.4 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_rendering_Canvas_h
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#define vtk_m_rendering_Canvas_h
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#include <vtkm/rendering/vtkm_rendering_export.h>
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#include <vtkm/Matrix.h>
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#include <vtkm/Types.h>
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#include <vtkm/cont/ColorTable.h>
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#include <vtkm/rendering/BitmapFont.h>
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#include <vtkm/rendering/Camera.h>
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#include <vtkm/rendering/Color.h>
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#include <vtkm/rendering/Texture2D.h>
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#define VTKM_DEFAULT_CANVAS_DEPTH 1.001f
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namespace vtkm
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{
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namespace rendering
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{
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class WorldAnnotator;
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class VTKM_RENDERING_EXPORT Canvas
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{
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public:
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using ColorBufferType = vtkm::cont::ArrayHandle<vtkm::Vec4f_32>;
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using DepthBufferType = vtkm::cont::ArrayHandle<vtkm::Float32>;
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using FontTextureType = vtkm::rendering::Texture2D<1>;
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Canvas(vtkm::Id width = 1024, vtkm::Id height = 1024);
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virtual ~Canvas();
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virtual vtkm::rendering::Canvas* NewCopy() const;
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virtual void Initialize();
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virtual void Activate();
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virtual void Clear();
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virtual void Finish();
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virtual void BlendBackground();
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VTKM_CONT
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vtkm::Id GetWidth() const;
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VTKM_CONT
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vtkm::Id GetHeight() const;
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VTKM_CONT
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const ColorBufferType& GetColorBuffer() const;
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VTKM_CONT
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ColorBufferType& GetColorBuffer();
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VTKM_CONT
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const DepthBufferType& GetDepthBuffer() const;
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VTKM_CONT
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DepthBufferType& GetDepthBuffer();
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VTKM_CONT
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void ResizeBuffers(vtkm::Id width, vtkm::Id height);
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VTKM_CONT
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const vtkm::rendering::Color& GetBackgroundColor() const;
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VTKM_CONT
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void SetBackgroundColor(const vtkm::rendering::Color& color);
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VTKM_CONT
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const vtkm::rendering::Color& GetForegroundColor() const;
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VTKM_CONT
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void SetForegroundColor(const vtkm::rendering::Color& color);
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VTKM_CONT
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vtkm::Id2 GetScreenPoint(vtkm::Float32 x,
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vtkm::Float32 y,
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vtkm::Float32 z,
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const vtkm::Matrix<vtkm::Float32, 4, 4>& transfor) const;
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// If a subclass uses a system that renderers to different buffers, then
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// these should be overridden to copy the data to the buffers.
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virtual void RefreshColorBuffer() const {}
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virtual void RefreshDepthBuffer() const {}
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virtual void SetViewToWorldSpace(const vtkm::rendering::Camera& camera, bool clip);
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virtual void SetViewToScreenSpace(const vtkm::rendering::Camera& camera, bool clip);
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virtual void SetViewportClipping(const vtkm::rendering::Camera&, bool) {}
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virtual void SaveAs(const std::string& fileName) const;
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/// Creates a WorldAnnotator of a type that is paired with this Canvas. Other
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/// types of world annotators might work, but this provides a default.
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///
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/// The WorldAnnotator is created with the C++ new keyword (so it should be
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/// deleted with delete later). A pointer to the created WorldAnnotator is
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/// returned.
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///
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virtual vtkm::rendering::WorldAnnotator* CreateWorldAnnotator() const;
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VTKM_CONT
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virtual void AddColorSwatch(const vtkm::Vec2f_64& point0,
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const vtkm::Vec2f_64& point1,
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const vtkm::Vec2f_64& point2,
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const vtkm::Vec2f_64& point3,
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const vtkm::rendering::Color& color) const;
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VTKM_CONT
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void AddColorSwatch(const vtkm::Float64 x0,
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const vtkm::Float64 y0,
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const vtkm::Float64 x1,
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const vtkm::Float64 y1,
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const vtkm::Float64 x2,
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const vtkm::Float64 y2,
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const vtkm::Float64 x3,
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const vtkm::Float64 y3,
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const vtkm::rendering::Color& color) const;
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VTKM_CONT
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virtual void AddLine(const vtkm::Vec2f_64& point0,
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const vtkm::Vec2f_64& point1,
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vtkm::Float32 linewidth,
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const vtkm::rendering::Color& color) const;
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VTKM_CONT
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void AddLine(vtkm::Float64 x0,
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vtkm::Float64 y0,
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vtkm::Float64 x1,
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vtkm::Float64 y1,
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vtkm::Float32 linewidth,
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const vtkm::rendering::Color& color) const;
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VTKM_CONT
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virtual void AddColorBar(const vtkm::Bounds& bounds,
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const vtkm::cont::ColorTable& colorTable,
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bool horizontal) const;
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VTKM_CONT
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void AddColorBar(vtkm::Float32 x,
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vtkm::Float32 y,
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vtkm::Float32 width,
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vtkm::Float32 height,
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const vtkm::cont::ColorTable& colorTable,
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bool horizontal) const;
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virtual void AddText(const vtkm::Vec2f_32& position,
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vtkm::Float32 scale,
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vtkm::Float32 angle,
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vtkm::Float32 windowAspect,
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const vtkm::Vec2f_32& anchor,
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const vtkm::rendering::Color& color,
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const std::string& text) const;
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VTKM_CONT
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void AddText(vtkm::Float32 x,
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vtkm::Float32 y,
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vtkm::Float32 scale,
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vtkm::Float32 angle,
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vtkm::Float32 windowAspect,
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vtkm::Float32 anchorX,
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vtkm::Float32 anchorY,
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const vtkm::rendering::Color& color,
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const std::string& text) const;
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VTKM_CONT
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void AddText(const vtkm::Matrix<vtkm::Float32, 4, 4>& transform,
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vtkm::Float32 scale,
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const vtkm::Vec2f_32& anchor,
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const vtkm::rendering::Color& color,
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const std::string& text,
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const vtkm::Float32& depth = 0) const;
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friend class AxisAnnotation2D;
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friend class ColorBarAnnotation;
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friend class ColorLegendAnnotation;
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friend class TextAnnotationScreen;
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friend class TextRenderer;
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friend class WorldAnnotator;
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private:
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bool LoadFont() const;
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const vtkm::Matrix<vtkm::Float32, 4, 4>& GetModelView() const;
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const vtkm::Matrix<vtkm::Float32, 4, 4>& GetProjection() const;
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struct CanvasInternals;
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std::shared_ptr<CanvasInternals> Internals;
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};
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}
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} //namespace vtkm::rendering
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#endif //vtk_m_rendering_Canvas_h
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