vtkCompositeControlPointsItem.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkCompositeControlPointsItem.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
 
#ifndef vtkCompositeControlPointsItem_h
#define vtkCompositeControlPointsItem_h
 
#include "vtkChartsCoreModule.h" // For export macro
#include "vtkColorTransferControlPointsItem.h"
 
class vtkPiecewiseFunction;
class vtkPiecewisePointHandleItem;
 
class VTKCHARTSCORE_EXPORT vtkCompositeControlPointsItem : public vtkColorTransferControlPointsItem
{
public:
  vtkTypeMacro(vtkCompositeControlPointsItem, vtkColorTransferControlPointsItem);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkCompositeControlPointsItem* New();
 
  virtual void SetColorTransferFunction(vtkColorTransferFunction* function);
 
 
  void SetOpacityFunction(vtkPiecewiseFunction* opacity);
  vtkGetObjectMacro(OpacityFunction, vtkPiecewiseFunction);
 
  enum PointsFunctionType
  {
    ColorPointsFunction = 1,
    OpacityPointsFunction = 2,
    ColorAndOpacityPointsFunction = 3
  };
 
 
  vtkSetMacro(PointsFunction, int);
  vtkGetMacro(PointsFunction, int);
 
  vtkIdType AddPoint(double* newPos) override;
 
  using Superclass::RemovePoint;
  vtkIdType RemovePoint(double* pos) override;
 
 
  vtkSetMacro(UseOpacityPointHandles, bool);
  vtkGetMacro(UseOpacityPointHandles, bool);
 
 
  bool MouseMoveEvent(const vtkContextMouseEvent& mouse) override;
  bool MouseDoubleClickEvent(const vtkContextMouseEvent& mouse) override;
  bool MouseButtonPressEvent(const vtkContextMouseEvent& mouse) override;
 
  vtkIdType GetNumberOfPoints() const override;
 
  void GetControlPoint(vtkIdType index, double point[4]) const override;
 
  void SetControlPoint(vtkIdType index, double* point) override;
 
protected:
  vtkCompositeControlPointsItem();
  ~vtkCompositeControlPointsItem() override;
 
  void emitEvent(unsigned long event, void* params) override;
 
  vtkMTimeType GetControlPointsMTime() override;
 
  void DrawPoint(vtkContext2D* painter, vtkIdType index) override;
  void EditPoint(float tX, float tY) override;
  virtual void EditPointCurve(vtkIdType idx);
 
  void MergeTransferFunctions();
  void SilentMergeTransferFunctions();
 
  int PointsFunction = vtkCompositeControlPointsItem::ColorAndOpacityPointsFunction;
  vtkPiecewiseFunction* OpacityFunction = nullptr;
  vtkPiecewisePointHandleItem* OpacityPointHandle = nullptr;
  bool UseOpacityPointHandles = false;
 
private:
  vtkCompositeControlPointsItem(const vtkCompositeControlPointsItem&) = delete;
  void operator=(const vtkCompositeControlPointsItem&) = delete;
};
 
#endif