vtkOpenGLPolyDataMapper2D.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkOpenGLPolyDataMapper2D_h
#define vtkOpenGLPolyDataMapper2D_h

#include "vtkNew.h"          // used for ivars
#include "vtkOpenGLHelper.h" // used for ivars
#include "vtkPolyDataMapper2D.h"
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkWrappingHints.h"          // For VTK_MARSHALAUTO
#include <map>                         //for used data arrays & vbos
#include <string>                      // For API.
#include <vector>                      //for ivars

VTK_ABI_NAMESPACE_BEGIN
class vtkActor2D;
class vtkGenericOpenGLResourceFreeCallback;
class vtkMatrix4x4;
class vtkOpenGLBufferObject;
class vtkOpenGLCellToVTKCellMap;
class vtkOpenGLHelper;
class vtkOpenGLVertexBufferObjectGroup;
class vtkPoints;
class vtkRenderer;
class vtkTextureObject;
class vtkTransform;
class vtkOverrideAttribute;

class VTKRENDERINGOPENGL2_EXPORT VTK_MARSHALAUTO vtkOpenGLPolyDataMapper2D
  : public vtkPolyDataMapper2D
{
public:
  static vtkOpenGLPolyDataMapper2D* New();
  VTK_NEWINSTANCE
  static vtkOverrideAttribute* CreateOverrideAttributes();
  vtkTypeMacro(vtkOpenGLPolyDataMapper2D, vtkPolyDataMapper2D);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void RenderOverlay(vtkViewport* viewport, vtkActor2D* actor) override;

  void ReleaseGraphicsResources(vtkWindow*) override;

protected:
  vtkOpenGLPolyDataMapper2D();
  ~vtkOpenGLPolyDataMapper2D() override;

  vtkGenericOpenGLResourceFreeCallback* ResourceCallback;

  virtual bool GetNeedToRebuildShaders(vtkOpenGLHelper& cellBO, vtkViewport* ren, vtkActor2D* act);

  virtual void BuildShaders(std::string& VertexCode, std::string& fragmentCode,
    std::string& geometryCode, vtkViewport* ren, vtkActor2D* act);

  virtual void UpdateShaders(vtkOpenGLHelper& cellBO, vtkViewport* viewport, vtkActor2D* act);

  virtual void SetCustomUniforms(vtkOpenGLHelper& cellBO, vtkActor2D* actor);

  virtual void SetMapperShaderParameters(
    vtkOpenGLHelper& cellBO, vtkViewport* viewport, vtkActor2D* act);

  void SetCameraShaderParameters(vtkOpenGLHelper& cellBO, vtkViewport* viewport, vtkActor2D* act);

  void SetPropertyShaderParameters(vtkOpenGLHelper& cellBO, vtkViewport* viewport, vtkActor2D* act);

  virtual void ReplaceShaderPicking(std::string& fssource, vtkRenderer* ren, vtkActor2D* act);

  void UpdateVBO(vtkActor2D* act, vtkViewport* viewport);

  // The VBO and its layout.
  vtkOpenGLVertexBufferObjectGroup* VBOs;

  // Structures for the various cell types we render.
  vtkOpenGLHelper Points;
  vtkOpenGLHelper Lines;
  vtkOpenGLHelper Tris;
  vtkOpenGLHelper TriStrips;
  vtkOpenGLHelper* LastBoundBO;

  vtkTextureObject* CellScalarTexture;
  vtkOpenGLBufferObject* CellScalarBuffer;
  bool HaveCellScalars;
  int PrimitiveIDOffset;

  vtkTimeStamp VBOUpdateTime; // When was the VBO updated?
  vtkPoints* TransformedPoints;
  vtkNew<vtkTransform> VBOTransformInverse;
  vtkNew<vtkMatrix4x4> VBOShiftScale;

  int LastPickState;
  vtkTimeStamp PickStateChanged;

  // do we have wide lines that require special handling
  virtual bool HaveWideLines(vtkViewport*, vtkActor2D*);

  // stores the mapping from vtk cells to gl_PrimitiveId
  vtkNew<vtkOpenGLCellToVTKCellMap> CellCellMap;

private:
  vtkOpenGLPolyDataMapper2D(const vtkOpenGLPolyDataMapper2D&) = delete;
  void operator=(const vtkOpenGLPolyDataMapper2D&) = delete;
};

#define vtkOpenGLPolyDataMapper2D_OVERRIDE_ATTRIBUTES                                              \
  vtkOpenGLPolyDataMapper2D::CreateOverrideAttributes()
VTK_ABI_NAMESPACE_END
#endif