vtkOpenGLLabeledContourMapper.h

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

#include "vtkLabeledContourMapper.h"
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkWrappingHints.h"          // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkMatrix4x4;
class vtkOpenGLHelper;
class vtkOverrideAttribute;

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

  void ReleaseGraphicsResources(vtkWindow* win) override;

protected:
  vtkOpenGLLabeledContourMapper();
  ~vtkOpenGLLabeledContourMapper() override;

  // We override this for compatibility with the OpenGL backend:
  // The old backend pushes actor matrices onto the matrix stack, so the text
  // actors already accounted for any transformations on this mapper's actor.
  // The new backend passes each actor's matrix to the shader individually, and
  // this mapper's actor matrix doesn't affect the label rendering.
  bool CreateLabels(vtkActor* actor) override;

  bool ApplyStencil(vtkRenderer* ren, vtkActor* act) override;
  bool RemoveStencil(vtkRenderer* ren) override;

  vtkOpenGLHelper* StencilBO;
  vtkMatrix4x4* TempMatrix4;

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

#define vtkOpenGLLabeledContourMapper_OVERRIDE_ATTRIBUTES                                          \
  vtkOpenGLLabeledContourMapper::CreateOverrideAttributes()
VTK_ABI_NAMESPACE_END
#endif