vtkOpenGLContextDevice3D.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkOpenGLContextDevice3D_h
#define vtkOpenGLContextDevice3D_h
 
#include "vtkContextDevice3D.h"
#include "vtkNew.h"                           // For ivars.
#include "vtkRenderingContextOpenGL2Module.h" // For export macro
 
#include <cstdint> // For std::uintptr_t
#include <vector>  // STL Header
 
VTK_ABI_NAMESPACE_BEGIN
class vtkBrush;
class vtkOpenGLContextDevice2D;
class vtkOpenGLHelper;
class vtkOpenGLRenderWindow;
class vtkPen;
class vtkUnsignedCharArray;
class vtkFloatArray;
class vtkRenderer;
class vtkShaderProgram;
class vtkTransform;
 
class VTKRENDERINGCONTEXTOPENGL2_EXPORT vtkOpenGLContextDevice3D : public vtkContextDevice3D
{
public:
  vtkTypeMacro(vtkOpenGLContextDevice3D, vtkContextDevice3D);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkOpenGLContextDevice3D* New();
 
  void DrawPoly(const float* verts, int n, const unsigned char* colors, int nc) override;
 
  void DrawLines(const float* verts, int n, const unsigned char* colors, int nc) override;
 
  void DrawPoints(const float* verts, int n, const unsigned char* colors, int nc) override;
  void DrawPoints(
    vtkDataArray* positions, vtkUnsignedCharArray* colors, std::uintptr_t cacheIdentifier) override;
 
  void DrawTriangleMesh(const float* mesh, int n, const unsigned char* colors, int nc) override;
  void DrawTriangleMesh(
    vtkDataArray* positions, vtkUnsignedCharArray* colors, std::uintptr_t cacheIdentifier) override;
 
  void ApplyPen(vtkPen* pen) override;
 
  void ApplyBrush(vtkBrush* brush) override;
 
  void SetMatrix(vtkMatrix4x4* m) override;
 
  void GetMatrix(vtkMatrix4x4* m) override;
 
  void MultiplyMatrix(vtkMatrix4x4* m) override;
 
  void PushMatrix() override;
 
  void PopMatrix() override;
 
  void SetClipping(const vtkRecti& rect) override;
 
  void EnableClipping(bool enable) override;
 
 
  void EnableClippingPlane(int i, double* planeEquation) override;
  void DisableClippingPlane(int i) override;
 
  void Initialize(vtkRenderer*, vtkOpenGLContextDevice2D*);
 
  virtual void Begin(vtkViewport* viewport);
 
  void ReleaseCache(std::uintptr_t cacheIdentifier) override;
 
protected:
  vtkOpenGLContextDevice3D();
  ~vtkOpenGLContextDevice3D() override;
 
  virtual void EnableDepthBuffer();
 
  virtual void DisableDepthBuffer();
 
  vtkOpenGLHelper* VCBO; // vertex + color
  void ReadyVCBOProgram();
  vtkOpenGLHelper* VBO; // vertex
  void ReadyVBOProgram();
 
  void SetMatrices(vtkShaderProgram* prog);
  void BuildVBO(vtkOpenGLHelper* cbo, const float* v, int nv, const unsigned char* coolors, int nc,
    float* tcoords);
  void CoreDrawTriangles(std::vector<float>& tverts);
 
  // do we have wide lines that require special handling
  virtual bool HaveWideLines();
 
  vtkTransform* ModelMatrix;
 
  vtkOpenGLRenderWindow* RenderWindow;
 
  vtkRenderer* Renderer;
 
  std::vector<bool> ClippingPlaneStates;
  std::vector<double> ClippingPlaneValues;
 
private:
  vtkOpenGLContextDevice3D(const vtkOpenGLContextDevice3D&) = delete;
  void operator=(const vtkOpenGLContextDevice3D&) = delete;
 
 
  class Private;
  Private* Storage;
 
  // we need a pointer to this because only
  // the 2D device gets a Begin and sets up
  // the ortho matrix
  vtkOpenGLContextDevice2D* Device2D;
 
  vtkNew<vtkBrush> Brush;
  vtkNew<vtkPen> Pen;
};
 
VTK_ABI_NAMESPACE_END
#endif