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vtkImageCroppingRegionsWidget.cxx
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vtkImageCroppingRegionsWidget.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageCroppingRegionsWidget.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.
=========================================================================*/
#include "vtkImageCroppingRegionsWidget.h"
#include "vtkObjectFactory.h"
#include "vtkActor2D.h"
#include "vtkCallbackCommand.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkImageData.h"
#include "vtkLineSource.h"
#include "vtkPolyDataMapper2D.h"
#include "vtkPolyData.h"
#include "vtkCoordinate.h"
#include "vtkProperty2D.h"
#include "vtkCamera.h"
#include "vtkVolumeMapper.h"
#include "vtkImageCroppingRegionsWidget.h"
vtkStandardNewMacro(vtkImageCroppingRegionsWidget);
//----------------------------------------------------------------------------
vtkImageCroppingRegionsWidget::vtkImageCroppingRegionsWidget()
{
this->PlaceFactor = 1.0;
int i;
this->EventCallbackCommand->SetCallback(
vtkImageCroppingRegionsWidget::ProcessEvents);
for (i = 0; i < 4; i++)
{
this->LineSources[i] = vtkLineSource::New();
this->LineActors[i] = vtkActor2D::New();
vtkPolyDataMapper2D *pdm = vtkPolyDataMapper2D::New();
vtkCoordinate *tcoord = vtkCoordinate::New();
tcoord->SetCoordinateSystemToWorld();
pdm->SetTransformCoordinate(tcoord);
tcoord->Delete();
this->LineActors[i]->SetMapper(pdm);
this->LineActors[i]->GetProperty()->SetColor(1, 1, 1);
pdm->SetInputConnection(
this->LineSources[i]->GetOutputPort());
pdm->Delete();
}
vtkPoints *points = vtkPoints::New();
points->Allocate(16);
for (i = 0; i < 16; i++)
{
points->InsertNextPoint(0.0, 0.0, 0.0);
}
for (i = 0; i < 9; i++)
{
this->RegionPolyData[i] = vtkPolyData::New();
this->RegionPolyData[i]->Allocate(1, 1);
this->RegionPolyData[i]->SetPoints(points);
}
points->Delete();
vtkIdType ptIds[4];
ptIds[0] = 0; ptIds[1] = 1; ptIds[2] = 5; ptIds[3] = 4;
this->RegionPolyData[0]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 1; ptIds[1] = 2; ptIds[2] = 6; ptIds[3] = 5;
this->RegionPolyData[1]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 2; ptIds[1] = 3; ptIds[2] = 7; ptIds[3] = 6;
this->RegionPolyData[2]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 4; ptIds[1] = 5; ptIds[2] = 9; ptIds[3] = 8;
this->RegionPolyData[3]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 5; ptIds[1] = 6; ptIds[2] = 10; ptIds[3] = 9;
this->RegionPolyData[4]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 6; ptIds[1] = 7; ptIds[2] = 11; ptIds[3] = 10;
this->RegionPolyData[5]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 8; ptIds[1] = 9; ptIds[2] = 13; ptIds[3] = 12;
this->RegionPolyData[6]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 9; ptIds[1] = 10; ptIds[2] = 14; ptIds[3] = 13;
this->RegionPolyData[7]->InsertNextCell(VTK_QUAD, 4, ptIds);
ptIds[0] = 10; ptIds[1] = 11; ptIds[2] = 15; ptIds[3] = 14;
this->RegionPolyData[8]->InsertNextCell(VTK_QUAD, 4, ptIds);
for (i = 0; i < 9; i++)
{
vtkPolyDataMapper2D *pdm = vtkPolyDataMapper2D::New();
vtkCoordinate *tcoord = vtkCoordinate::New();
tcoord->SetCoordinateSystemToWorld();
pdm->SetTransformCoordinate(tcoord);
tcoord->Delete();
this->RegionActors[i] = vtkActor2D::New();
this->RegionActors[i]->SetMapper(pdm);
this->RegionActors[i]->GetProperty()->SetColor(1, 1, 1);
this->RegionActors[i]->GetProperty()->SetOpacity(0.0);
pdm->SetInputData(this->RegionPolyData[i]);
pdm->Delete();
}
this->SliceOrientation = vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY;
this->Slice = 0;
this->MouseCursorState = vtkImageCroppingRegionsWidget::NoLine;
this->Moving = 0;
this->CroppingRegionFlags = 0;
this->VolumeMapper = nullptr;
for (i = 0; i < 6; i += 2)
{
this->InitialBounds[i] = this->PlanePositions[i] = 0;
this->InitialBounds[i + 1] = this->PlanePositions[i + 1] = 1;
}
}
//----------------------------------------------------------------------------
vtkImageCroppingRegionsWidget::~vtkImageCroppingRegionsWidget()
{
int i;
for (i = 0; i < 4; i++)
{
this->LineSources[i]->Delete();
this->LineSources[i] = nullptr;
this->LineActors[i]->Delete();
this->LineActors[i] = nullptr;
}
for (i = 0; i < 9; i++)
{
this->RegionPolyData[i]->Delete();
this->RegionPolyData[i]= nullptr;
this->RegionActors[i]->Delete();
this->RegionActors[i] = nullptr;
}
this->SetVolumeMapper(nullptr);
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::SetCroppingRegionFlags(int flags)
{
if (this->CroppingRegionFlags == flags ||
flags < 0x0 || flags > 0x7ffffff)
{
return;
}
this->CroppingRegionFlags = flags;
this->Modified();
this->UpdateOpacity();
}
//----------------------------------------------------------------------------
double vtkImageCroppingRegionsWidget::GetSlicePosition()
{
if (!this->VolumeMapper || !this->VolumeMapper->GetInput())
{
return 0.0;
}
double *origin = this->VolumeMapper->GetInput()->GetOrigin();
double *spacing = this->VolumeMapper->GetInput()->GetSpacing();
return (double)origin[this->SliceOrientation] +
((double)this->Slice) * (double)spacing[this->SliceOrientation];
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::UpdateOpacity()
{
if (!this->VolumeMapper || !this->VolumeMapper->GetInput())
{
return;
}
static const int indices[][9] = {{ 0, 9, 18, 3, 12, 21, 6, 15, 24},
{ 1, 10, 19, 4, 13, 22, 7, 16, 25},
{ 2, 11, 20, 5, 14, 23, 8, 17, 26},
{ 0, 1, 2, 9, 10, 11, 18, 19, 20},
{ 3, 4, 5, 12, 13, 14, 21, 22, 23},
{ 6, 7, 8, 15, 16, 17, 24, 25, 26},
{ 0, 1, 2, 3, 4, 5, 6, 7, 8},
{ 9, 10, 11, 12, 13, 14, 15, 16, 17},
{18, 19, 20, 21, 22, 23, 24, 25, 26}};
double slice_pos = this->GetSlicePosition();
int sliceId = this->SliceOrientation * 3;
if (slice_pos >= this->PlanePositions[this->SliceOrientation * 2] &&
slice_pos <= this->PlanePositions[this->SliceOrientation * 2 + 1])
{
sliceId += 1;
}
else if (slice_pos > this->PlanePositions[this->SliceOrientation * 2 + 1])
{
sliceId += 2;
}
int compare = 1;
int i;
for (i = 0; i < 9; i++)
{
if ((compare << indices[sliceId][i]) & this->CroppingRegionFlags)
{
this->RegionActors[i]->GetProperty()->SetOpacity(0.0);
}
else
{
this->RegionActors[i]->GetProperty()->SetOpacity(0.3);
}
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::SetPlanePositions(double xMin, double xMax,
double yMin, double yMax,
double zMin, double zMax)
{
double positions[6];
positions[0] = xMin;
positions[1] = xMax;
positions[2] = yMin;
positions[3] = yMax;
positions[4] = zMin;
positions[5] = zMax;
this->ConstrainPlanePositions(positions);
if (this->PlanePositions[0] == positions[0] &&
this->PlanePositions[1] == positions[1] &&
this->PlanePositions[2] == positions[2] &&
this->PlanePositions[3] == positions[3] &&
this->PlanePositions[4] == positions[4] &&
this->PlanePositions[5] == positions[5])
{
return;
}
int i;
for (i = 0; i < 6; i++)
{
this->PlanePositions[i] = positions[i];
}
this->VolumeMapper->SetCroppingRegionPlanes(this->PlanePositions);
this->UpdateGeometry();
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::ConstrainPlanePositions(double positions[6])
{
int i;
double tmp;
for (i = 0; i < 6; i += 2)
{
if (positions[i] > positions[i + 1])
{
tmp = positions[i];
positions[i] = positions[i + 1];
positions[i + 1] = tmp;
}
if (positions[i] < this->InitialBounds[i] ||
positions[i] > this->InitialBounds[i + 1])
{
positions[i] = this->InitialBounds[i];
}
if (positions[i + 1] < this->InitialBounds[i] ||
positions[i + 1] > this->InitialBounds[i + 1])
{
positions[i + 1] = this->InitialBounds[i + 1];
}
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::UpdateGeometry()
{
if (!this->VolumeMapper || !this->VolumeMapper->GetInput())
{
return;
}
// Could use any of the 9 region poly data because they share points
vtkPoints *points = this->RegionPolyData[0]->GetPoints();
double slice_pos = this->GetSlicePosition();
double *plane_pos = this->PlanePositions;
double *bounds = this->InitialBounds;
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
this->LineSources[0]->SetPoint1(slice_pos, plane_pos[2], bounds[4]);
this->LineSources[0]->SetPoint2(slice_pos, plane_pos[2], bounds[5]);
this->LineSources[1]->SetPoint1(slice_pos, plane_pos[3], bounds[4]);
this->LineSources[1]->SetPoint2(slice_pos, plane_pos[3], bounds[5]);
this->LineSources[2]->SetPoint1(slice_pos, bounds[2], plane_pos[4]);
this->LineSources[2]->SetPoint2(slice_pos, bounds[3], plane_pos[4]);
this->LineSources[3]->SetPoint1(slice_pos, bounds[2], plane_pos[5]);
this->LineSources[3]->SetPoint2(slice_pos, bounds[3], plane_pos[5]);
points->SetPoint(0, slice_pos, bounds[2], bounds[4]);
points->SetPoint(1, slice_pos, plane_pos[2], bounds[4]);
points->SetPoint(2, slice_pos, plane_pos[3], bounds[4]);
points->SetPoint(3, slice_pos, bounds[3], bounds[4]);
points->SetPoint(4, slice_pos, bounds[2], plane_pos[4]);
points->SetPoint(5, slice_pos, plane_pos[2], plane_pos[4]);
points->SetPoint(6, slice_pos, plane_pos[3], plane_pos[4]);
points->SetPoint(7, slice_pos, bounds[3], plane_pos[4]);
points->SetPoint(8, slice_pos, bounds[2],plane_pos[5]);
points->SetPoint(9, slice_pos, plane_pos[2], plane_pos[5]);
points->SetPoint(10, slice_pos, plane_pos[3], plane_pos[5]);
points->SetPoint(11, slice_pos, bounds[3], plane_pos[5]);
points->SetPoint(12, slice_pos, bounds[2], bounds[5]);
points->SetPoint(13, slice_pos, plane_pos[2], bounds[5]);
points->SetPoint(14, slice_pos, plane_pos[3], bounds[5]);
points->SetPoint(15, slice_pos, bounds[3], bounds[5]);
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
this->LineSources[0]->SetPoint1(plane_pos[0], slice_pos, bounds[4]);
this->LineSources[0]->SetPoint2(plane_pos[0], slice_pos, bounds[5]);
this->LineSources[1]->SetPoint1(plane_pos[1], slice_pos, bounds[4]);
this->LineSources[1]->SetPoint2(plane_pos[1], slice_pos, bounds[5]);
this->LineSources[2]->SetPoint1(bounds[0], slice_pos, plane_pos[4]);
this->LineSources[2]->SetPoint2(bounds[1], slice_pos, plane_pos[4]);
this->LineSources[3]->SetPoint1(bounds[0], slice_pos, plane_pos[5]);
this->LineSources[3]->SetPoint2(bounds[1], slice_pos, plane_pos[5]);
points->SetPoint(0, bounds[0], slice_pos, bounds[4]);
points->SetPoint(1, plane_pos[0], slice_pos, bounds[4]);
points->SetPoint(2, plane_pos[1], slice_pos, bounds[4]);
points->SetPoint(3, bounds[1], slice_pos, bounds[4]);
points->SetPoint(4, bounds[0], slice_pos, plane_pos[4]);
points->SetPoint(5, plane_pos[0], slice_pos, plane_pos[4]);
points->SetPoint(6, plane_pos[1], slice_pos, plane_pos[4]);
points->SetPoint(7, bounds[1], slice_pos, plane_pos[4]);
points->SetPoint(8, bounds[0], slice_pos, plane_pos[5]);
points->SetPoint(9, plane_pos[0], slice_pos, plane_pos[5]);
points->SetPoint(10, plane_pos[1], slice_pos, plane_pos[5]);
points->SetPoint(11, bounds[1], slice_pos, plane_pos[5]);
points->SetPoint(12, bounds[0], slice_pos, bounds[5]);
points->SetPoint(13, plane_pos[0], slice_pos, bounds[5]);
points->SetPoint(14, plane_pos[1], slice_pos, bounds[5]);
points->SetPoint(15, bounds[1], slice_pos, bounds[5]);
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
this->LineSources[0]->SetPoint1(plane_pos[0], bounds[2], slice_pos);
this->LineSources[0]->SetPoint2(plane_pos[0], bounds[3], slice_pos);
this->LineSources[1]->SetPoint1(plane_pos[1], bounds[2], slice_pos);
this->LineSources[1]->SetPoint2(plane_pos[1], bounds[3], slice_pos);
this->LineSources[2]->SetPoint1(bounds[0], plane_pos[2], slice_pos);
this->LineSources[2]->SetPoint2(bounds[1], plane_pos[2], slice_pos);
this->LineSources[3]->SetPoint1(bounds[0], plane_pos[3], slice_pos);
this->LineSources[3]->SetPoint2(bounds[1], plane_pos[3], slice_pos);
points->SetPoint(0, bounds[0], bounds[2], slice_pos);
points->SetPoint(1, plane_pos[0], bounds[2], slice_pos);
points->SetPoint(2, plane_pos[1], bounds[2], slice_pos);
points->SetPoint(3, bounds[1], bounds[2], slice_pos);
points->SetPoint(4, bounds[0], plane_pos[2], slice_pos);
points->SetPoint(5, plane_pos[0], plane_pos[2], slice_pos);
points->SetPoint(6, plane_pos[1], plane_pos[2], slice_pos);
points->SetPoint(7, bounds[1], plane_pos[2], slice_pos);
points->SetPoint(8, bounds[0], plane_pos[3], slice_pos);
points->SetPoint(9, plane_pos[0], plane_pos[3], slice_pos);
points->SetPoint(10, plane_pos[1], plane_pos[3], slice_pos);
points->SetPoint(11, bounds[1], plane_pos[3], slice_pos);
points->SetPoint(12, bounds[0], bounds[3], slice_pos);
points->SetPoint(13, plane_pos[0], bounds[3], slice_pos);
points->SetPoint(14, plane_pos[1], bounds[3], slice_pos);
points->SetPoint(15, bounds[1], bounds[3], slice_pos);
break;
}
this->UpdateOpacity();
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::SetEnabled(int enabling)
{
if (!this->Interactor)
{
vtkErrorMacro(
<<"The interactor must be set prior to enabling/disabling widget");
return;
}
if (this->Enabled == enabling)
{
return;
}
int count;
if (enabling)
{
this->SetCurrentRenderer(
this->Interactor->FindPokedRenderer(
this->Interactor->GetLastEventPosition()[0],
this->Interactor->GetLastEventPosition()[1]));
if (this->CurrentRenderer == nullptr)
{
return;
}
this->Enabled = 1;
// Listen for the following events
vtkRenderWindowInteractor *i = this->Interactor;
i->AddObserver(vtkCommand::MouseMoveEvent,
this->EventCallbackCommand, this->Priority);
i->AddObserver(vtkCommand::LeftButtonPressEvent,
this->EventCallbackCommand, this->Priority);
i->AddObserver(vtkCommand::LeftButtonReleaseEvent,
this->EventCallbackCommand, this->Priority);
i->AddObserver(vtkCommand::MiddleButtonPressEvent,
this->EventCallbackCommand, this->Priority);
i->AddObserver(vtkCommand::MiddleButtonReleaseEvent,
this->EventCallbackCommand, this->Priority);
i->AddObserver(vtkCommand::RightButtonPressEvent,
this->EventCallbackCommand, this->Priority);
i->AddObserver(vtkCommand::RightButtonReleaseEvent,
this->EventCallbackCommand, this->Priority);
// Add the cropping regions
this->CurrentRenderer->AddViewProp(this->LineActors[0]);
this->CurrentRenderer->AddViewProp(this->LineActors[1]);
this->CurrentRenderer->AddViewProp(this->LineActors[2]);
this->CurrentRenderer->AddViewProp(this->LineActors[3]);
for (count = 0; count < 9; count++)
{
this->CurrentRenderer->AddViewProp(this->RegionActors[count]);
}
this->InvokeEvent(vtkCommand::EnableEvent,nullptr);
}
else
{
this->Enabled = 0;
// Don't listen for events any more
this->Interactor->RemoveObserver(this->EventCallbackCommand);
// Turn off the cropping regions
if (this->CurrentRenderer)
{
this->CurrentRenderer->RemoveActor(this->LineActors[0]);
this->CurrentRenderer->RemoveActor(this->LineActors[1]);
this->CurrentRenderer->RemoveActor(this->LineActors[2]);
this->CurrentRenderer->RemoveActor(this->LineActors[3]);
for (count = 0; count < 9; count++)
{
this->CurrentRenderer->RemoveActor(this->RegionActors[count]);
}
}
this->InvokeEvent(vtkCommand::DisableEvent,nullptr);
}
this->Interactor->Render();
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::ProcessEvents(vtkObject* vtkNotUsed(object),
unsigned long event,
void* clientdata,
void* vtkNotUsed(calldata))
{
vtkImageCroppingRegionsWidget* self =
reinterpret_cast<vtkImageCroppingRegionsWidget *>(clientdata);
switch (event)
{
case vtkCommand::LeftButtonPressEvent:
case vtkCommand::MiddleButtonPressEvent:
case vtkCommand::RightButtonPressEvent:
self->OnButtonPress();
break;
case vtkCommand::MouseMoveEvent:
self->OnMouseMove();
break;
case vtkCommand::LeftButtonReleaseEvent:
case vtkCommand::MiddleButtonReleaseEvent:
case vtkCommand::RightButtonReleaseEvent:
self->OnButtonRelease();
break;
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::OnButtonPress()
{
if (this->MouseCursorState == vtkImageCroppingRegionsWidget::NoLine)
{
return;
}
this->Moving = 1;
this->EventCallbackCommand->SetAbortFlag(1);
this->StartInteraction();
this->InvokeEvent(vtkCommand::StartInteractionEvent, nullptr);
this->Interactor->Render();
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::OnButtonRelease()
{
if (this->MouseCursorState == vtkImageCroppingRegionsWidget::NoLine)
{
return;
}
this->Moving = 0;
this->EventCallbackCommand->SetAbortFlag(1);
this->EndInteraction();
this->InvokeEvent(vtkCommand::EndInteractionEvent, nullptr);
this->MouseCursorState = vtkImageCroppingRegionsWidget::NoLine;
this->SetMouseCursor(this->MouseCursorState);
this->Interactor->Render();
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::OnMouseMove()
{
if (this->Moving)
{
switch (this->MouseCursorState)
{
case vtkImageCroppingRegionsWidget::MovingH1:
case vtkImageCroppingRegionsWidget::MovingH2:
this->MoveHorizontalLine();
break;
case vtkImageCroppingRegionsWidget::MovingV1:
case vtkImageCroppingRegionsWidget::MovingV2:
this->MoveVerticalLine();
break;
case vtkImageCroppingRegionsWidget::MovingH1AndV1:
case vtkImageCroppingRegionsWidget::MovingH2AndV1:
case vtkImageCroppingRegionsWidget::MovingH1AndV2:
case vtkImageCroppingRegionsWidget::MovingH2AndV2:
this->MoveIntersectingLines();
break;
}
this->UpdateCursorIcon();
this->EventCallbackCommand->SetAbortFlag(1);
this->InvokeEvent(vtkCommand::InteractionEvent, nullptr);
}
else
{
this->UpdateCursorIcon();
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::MoveHorizontalLine()
{
double newPosition[3];
float planes[6];
int i;
for (i = 0; i < 6; i++)
{
planes[i] = this->PlanePositions[i];
}
int x = this->Interactor->GetEventPosition()[0];
int y = this->Interactor->GetEventPosition()[1];
if (!this->ComputeWorldCoordinate(x, y, newPosition))
{
return;
}
if (this->MouseCursorState == vtkImageCroppingRegionsWidget::MovingH1)
{
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
if (newPosition[2] < planes[5])
{
planes[4] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[1] < planes[3])
{
planes[2] = newPosition[1];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(
vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent, planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
}
else if (this->MouseCursorState == vtkImageCroppingRegionsWidget::MovingH2)
{
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
if (newPosition[2] > planes[4])
{
planes[5] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[1] > planes[2])
{
planes[3] = newPosition[1];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(
vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent, planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::MoveVerticalLine()
{
double newPosition[3];
float planes[6];
int i;
for (i = 0; i < 6; i++)
{
planes[i] = this->PlanePositions[i];
}
int x = this->Interactor->GetEventPosition()[0];
int y = this->Interactor->GetEventPosition()[1];
if (!this->ComputeWorldCoordinate(x, y, newPosition))
{
return;
}
if (this->MouseCursorState == vtkImageCroppingRegionsWidget::MovingV1)
{
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
if (newPosition[1] < planes[3])
{
planes[2] = newPosition[1];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[0] < planes[1])
{
planes[0] = newPosition[0];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(
vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent, planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
}
else if (this->MouseCursorState == vtkImageCroppingRegionsWidget::MovingV2)
{
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
if (newPosition[1] > planes[2])
{
planes[3] = newPosition[1];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[0] > planes[0])
{
planes[1] = newPosition[0];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(
vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent, planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::MoveIntersectingLines()
{
double newPosition[3];
float planes[6];
int i;
for (i = 0; i < 6; i++)
{
planes[i] = this->PlanePositions[i];
}
int x = this->Interactor->GetEventPosition()[0];
int y = this->Interactor->GetEventPosition()[1];
if (!this->ComputeWorldCoordinate(x, y, newPosition))
{
return;
}
switch (this->MouseCursorState)
{
case vtkImageCroppingRegionsWidget::MovingH1AndV1:
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
if (newPosition[1] < planes[3])
{
planes[2] = newPosition[1];
}
if (newPosition[2] < planes[5])
{
planes[4] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
if (newPosition[0] < planes[1])
{
planes[0] = newPosition[0];
}
if (newPosition[2] < planes[5])
{
planes[4] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[0] < planes[1])
{
planes[0] = newPosition[0];
}
if (newPosition[1] < planes[3])
{
planes[2] = newPosition[1];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(
vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent, planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
break;
case vtkImageCroppingRegionsWidget::MovingH1AndV2:
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
if (newPosition[1] > planes[2])
{
planes[3] = newPosition[1];
}
if (newPosition[2] < planes[5])
{
planes[4] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
if (newPosition[0] > planes[0])
{
planes[1] = newPosition[0];
}
if (newPosition[2] < planes[5])
{
planes[4] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[0] > planes[0])
{
planes[1] = newPosition[0];
}
if (newPosition[1] < planes[3])
{
planes[2] = newPosition[1];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent,
planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
break;
case vtkImageCroppingRegionsWidget::MovingH2AndV1:
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
if (newPosition[1] < planes[3])
{
planes[2] = newPosition[1];
}
if (newPosition[2] > planes[4])
{
planes[5] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
if (newPosition[0] < planes[1])
{
planes[0] = newPosition[0];
}
if (newPosition[2] > planes[4])
{
planes[5] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[0] < planes[1])
{
planes[0] = newPosition[0];
}
if (newPosition[1] > planes[2])
{
planes[3] = newPosition[1];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent,
planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
break;
case vtkImageCroppingRegionsWidget::MovingH2AndV2:
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
if (newPosition[1] > planes[2])
{
planes[3] = newPosition[1];
}
if (newPosition[2] > planes[4])
{
planes[5] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
if (newPosition[0] > planes[0])
{
planes[1] = newPosition[0];
}
if (newPosition[2] > planes[4])
{
planes[5] = newPosition[2];
}
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
if (newPosition[0] > planes[0])
{
planes[1] = newPosition[0];
}
if (newPosition[1] > planes[2])
{
planes[3] = newPosition[1];
}
break;
}
this->SetPlanePositions(planes);
this->InvokeEvent(vtkImageCroppingRegionsWidget::CroppingPlanesPositionChangedEvent,
planes);
this->EventCallbackCommand->SetAbortFlag(1);
this->Interactor->Render();
break;
}
}
//----------------------------------------------------------------------------
void vtkImageCroppingRegionsWidget::UpdateCursorIcon()
{
if (!this->Enabled)
{
this->Interactor->GetRenderWindow()->SetCurrentCursor(VTK_CURSOR_DEFAULT);
return;
}
if (!this->CurrentRenderer || this->Moving)
{
return;
}
double slice_pos = this->GetSlicePosition();
double *plane_pos = this->PlanePositions;
double *bounds = this->InitialBounds;
int x = this->Interactor->GetEventPosition()[0];
int y = this->Interactor->GetEventPosition()[1];
double lineX1 = 0.0;
double lineX2 = 0.0;
double lineY1 = 0.0;
double lineY2 = 0.0;
switch (this->SliceOrientation)
{
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_YZ:
this->CurrentRenderer->SetWorldPoint(
slice_pos, plane_pos[2], bounds[4], 1);
this->CurrentRenderer->WorldToDisplay();
lineX1 = this->CurrentRenderer->GetDisplayPoint()[0];
this->CurrentRenderer->SetWorldPoint(
slice_pos, plane_pos[3], bounds[4], 1);
this->CurrentRenderer->WorldToDisplay();
lineX2 = this->CurrentRenderer->GetDisplayPoint()[0];
this->CurrentRenderer->SetWorldPoint(
slice_pos, bounds[2], plane_pos[4], 1);
this->CurrentRenderer->WorldToDisplay();
lineY1 = this->CurrentRenderer->GetDisplayPoint()[1];
this->CurrentRenderer->SetWorldPoint(
slice_pos, bounds[2], plane_pos[5], 1);
this->CurrentRenderer->WorldToDisplay();
lineY2 = this->CurrentRenderer->GetDisplayPoint()[1];
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XZ:
this->CurrentRenderer->SetWorldPoint(
plane_pos[0], slice_pos, bounds[4], 1);
this->CurrentRenderer->WorldToDisplay();
lineX1 = this->CurrentRenderer->GetDisplayPoint()[0];
this->CurrentRenderer->SetWorldPoint(
plane_pos[1], slice_pos, bounds[4], 1);
this->CurrentRenderer->WorldToDisplay();
lineX2 = this->CurrentRenderer->GetDisplayPoint()[0];
this->CurrentRenderer->SetWorldPoint(
bounds[0], slice_pos, plane_pos[4], 1);
this->CurrentRenderer->WorldToDisplay();
lineY1 = this->CurrentRenderer->GetDisplayPoint()[1];
this->CurrentRenderer->SetWorldPoint(
bounds[0], slice_pos, plane_pos[5], 1);
this->CurrentRenderer->WorldToDisplay();
lineY2 = this->CurrentRenderer->GetDisplayPoint()[1];
break;
case vtkImageCroppingRegionsWidget::SLICE_ORIENTATION_XY:
this->CurrentRenderer->SetWorldPoint(
plane_pos[0], bounds[2], slice_pos, 1);
this->CurrentRenderer->WorldToDisplay();
lineX1 = this->CurrentRenderer->GetDisplayPoint()[0];
this->CurrentRenderer->SetWorldPoint(
plane_pos[1], bounds[2], slice_pos, 1);
this->CurrentRenderer->WorldToDisplay();
lineX2 = this->CurrentRenderer->GetDisplayPoint()[0];
this->CurrentRenderer->SetWorldPoint(
bounds[0], plane_pos[2], slice_pos, 1);
this->CurrentRenderer->WorldToDisplay();
lineY1 = this->CurrentRenderer->GetDisplayPoint()[1];
this->CurrentRenderer->SetWorldPoint(