vtkSlicerROIRepresentation2D.h

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/*==============================================================================

  Copyright (c) Laboratory for Percutaneous Surgery (PerkLab)
  Queen's University, Kingston, ON, Canada. All Rights Reserved.

  See COPYRIGHT.txt
  or http://www.slicer.org/copyright/copyright.txt for details.

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

  This file was originally developed by Kyle Sunderland, PerkLab, Queen's University
  and was supported through CANARIE's Research Software Program, Cancer
  Care Ontario, OpenAnatomy, and Brigham and Women's Hospital through NIH grant R01MH112748.

==============================================================================*/

#ifndef vtkSlicerROIRepresentation2D_h
#define vtkSlicerROIRepresentation2D_h

#include "vtkSlicerMarkupsModuleVTKWidgetsExport.h"
#include "vtkSlicerMarkupsWidgetRepresentation2D.h"
#include "vtkSlicerROIRepresentation3D.h"

class vtkAppendPolyData;
class vtkClipPolyData;
class vtkContourTriangulator;
class vtkCutter;
class vtkDiscretizableColorTransferFunction;
class vtkMRMLMarkupsROINode;
class vtkOutlineFilter;
class vtkSampleImplicitFunctionFilter;

class VTK_SLICER_MARKUPS_MODULE_VTKWIDGETS_EXPORT vtkSlicerROIRepresentation2D : public vtkSlicerMarkupsWidgetRepresentation2D
{
public:
  static vtkSlicerROIRepresentation2D *New();

  vtkTypeMacro(vtkSlicerROIRepresentation2D,vtkSlicerMarkupsWidgetRepresentation2D);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void UpdateFromMRML(vtkMRMLNode* caller, unsigned long event, void *callData = nullptr) override;

  void GetActors(vtkPropCollection *) override;
  void ReleaseGraphicsResources(vtkWindow *) override;
  int RenderOverlay(vtkViewport *viewport) override;
  int RenderOpaqueGeometry(vtkViewport *viewport) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport *viewport) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;

  double *GetBounds() override;

  void CanInteract(vtkMRMLInteractionEventData* interactionEventData,
    int& foundComponentType, int& foundComponentIndex, double& closestDistance2) override;

  void CanInteractWithROI(vtkMRMLInteractionEventData* interactionEventData,
    int& foundComponentType, int& foundComponentIndex, double& closestDistance2);

  // Update visibility of interaction handles for representation
  void UpdateInteractionPipeline() override;

protected:

  virtual void UpdateCubeSourceFromMRML(vtkMRMLMarkupsROINode* roiNode);

  // Initialize interaction handle pipeline
  void SetupInteractionPipeline() override;

protected:
  vtkSlicerROIRepresentation2D();
  ~vtkSlicerROIRepresentation2D() override;

  void SetROISource(vtkPolyDataAlgorithm* roiSource);

  vtkSmartPointer<vtkPolyDataAlgorithm>       ROISource;

  vtkSmartPointer<vtkPassThrough>       ROIPipelineInputFilter;
  vtkSmartPointer<vtkTransform>               ROIToWorldTransform;
  vtkSmartPointer<vtkTransformPolyDataFilter> ROIToWorldTransformFilter;
  vtkSmartPointer<vtkCutter>                  ROIOutlineCutter;
  vtkSmartPointer<vtkTransformPolyDataFilter> ROIOutlineWorldToSliceTransformFilter;
  vtkSmartPointer<vtkContourTriangulator>     ROIIntersectionTriangulator;

  vtkSmartPointer<vtkPolyDataMapper2D> ROIMapper;
  vtkSmartPointer<vtkProperty2D>       ROIProperty;
  vtkSmartPointer<vtkActor2D>          ROIActor;

  vtkSmartPointer<vtkPolyDataMapper2D> ROIOutlineMapper;
  vtkSmartPointer<vtkProperty2D>       ROIOutlineProperty;
  vtkSmartPointer<vtkActor2D>          ROIOutlineActor;

  class MarkupsInteractionPipelineROI2D : public vtkSlicerROIRepresentation3D::MarkupsInteractionPipelineROI
  {
  public:
    MarkupsInteractionPipelineROI2D(vtkSlicerMarkupsWidgetRepresentation* representation);
    ~MarkupsInteractionPipelineROI2D() override = default;
    void GetViewPlaneNormal(double viewPlaneNormal[3]) override;
    void UpdateScaleHandles() override;
    void AddScaleEdgeIntersection(int pointIndex, vtkIdTypeArray* visibilityArray, vtkPoints* scaleHandleArray,
      double sliceNormal[3], double sliceOrigin[3], double edgePoint[3], double edgeVector[3]);
    vtkSmartPointer<vtkTransformPolyDataFilter> WorldToSliceTransformFilter;
  };

private:
  vtkSlicerROIRepresentation2D(const vtkSlicerROIRepresentation2D&) = delete;
  void operator=(const vtkSlicerROIRepresentation2D&) = delete;
};

#endif