void RenderView3D::UpdateSliceFrames()
{
MainWindow* mainwnd = MainWindow::GetMainWindow();
LayerCollection* lc = mainwnd->GetLayerCollection( "MRI" );
if ( lc->IsEmpty() )
{
lc = mainwnd->GetLayerCollection( "Surface" );
}
double* bounds = m_dBounds;
double* slicepos = lc->GetSlicePosition();
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
vtkSmartPointer<vtkCellArray> lines = vtkSmartPointer<vtkCellArray>::New();
points->InsertPoint( 0, slicepos[0], bounds[2], bounds[4] );
points->InsertPoint( 1, slicepos[0], bounds[2], bounds[5] );
points->InsertPoint( 2, slicepos[0], bounds[3], bounds[5] );
points->InsertPoint( 3, slicepos[0], bounds[3], bounds[4] );
vtkIdType ids[5] = { 0, 1, 2, 3, 0 };
lines->InsertNextCell( 5, ids );
vtkSmartPointer<vtkPolyData> polydata = vtkSmartPointer<vtkPolyData>::New();
polydata->SetPoints( points );
polydata->SetLines( lines );
vtkPolyDataMapper::SafeDownCast(m_actorSliceFrames[0]->GetMapper())->SetInput( polydata );
points = vtkSmartPointer<vtkPoints>::New();
points->InsertPoint( 0, bounds[0], slicepos[1], bounds[4] );
points->InsertPoint( 1, bounds[0], slicepos[1], bounds[5] );
points->InsertPoint( 2, bounds[1], slicepos[1], bounds[5] );
points->InsertPoint( 3, bounds[1], slicepos[1], bounds[4] );
polydata = vtkSmartPointer<vtkPolyData>::New();
polydata->SetPoints( points );
polydata->SetLines( lines );
vtkPolyDataMapper::SafeDownCast(m_actorSliceFrames[1]->GetMapper())->SetInput( polydata );
points = vtkSmartPointer<vtkPoints>::New();
points->InsertPoint( 0, bounds[0], bounds[2], slicepos[2] );
points->InsertPoint( 1, bounds[0], bounds[3], slicepos[2] );
points->InsertPoint( 2, bounds[1], bounds[3], slicepos[2] );
points->InsertPoint( 3, bounds[1], bounds[2], slicepos[2] );
polydata = vtkSmartPointer<vtkPolyData>::New();
polydata->SetPoints( points );
polydata->SetLines( lines );
vtkPolyDataMapper::SafeDownCast(m_actorSliceFrames[2]->GetMapper())->SetInput( polydata );
for ( int i = 0; i < 3; i++ )
{
double bds[6];
for ( int n = 0; n < 3; n++ )
{
bds[n*2] = m_dBounds[n*2] - m_dBoundingTolerance;
bds[n*2+1] = m_dBounds[n*2+1] + m_dBoundingTolerance;
}
bds[i*2] = slicepos[i] - m_dBoundingTolerance;
bds[i*2+1] = slicepos[i] + m_dBoundingTolerance;
m_cubeSliceBoundingBox[i]->SetBounds( bds );
m_actorSliceBoundingBox[i]->GetMapper()->Update();
}
RequestRedraw();
}
void RenderView3D::MoveSliceToScreenCoord( int x, int y )
{
if ( m_nSliceHighlighted < 0 )
{
return;
}
MainWindow* mainwnd = MainWindow::GetMainWindow();
LayerCollection* lc = mainwnd->GetLayerCollection( "MRI" );
if ( lc->IsEmpty() )
{
lc = mainwnd->GetLayerCollection( "Surface" );
}
double* bounds = m_dBounds;
double slicepos[3];
lc->GetSlicePosition( slicepos );
double pt[3];
pt[0] = m_dIntersectPoint[0];
pt[1] = m_dIntersectPoint[1];
pt[2] = m_dIntersectPoint[2];
double v[3] = { 0, 0, 0 };
switch ( m_nSliceHighlighted )
{
case 0:
if ( qMin( fabs( pt[1] - bounds[2] ), fabs( pt[1] - bounds[3] ) ) <
qMin( fabs( pt[2] - bounds[4] ), fabs( pt[2] - bounds[5] ) ) )
{
v[1] = 1;
if ( fabs( pt[1] - bounds[2] ) < fabs( pt[1] - bounds[3] ) )
{
pt[1] = bounds[2];
}
else
{
pt[1] = bounds[3];
}
}
else
{
v[2] = 1;
if ( fabs( pt[2] - bounds[4] ) < fabs( pt[2] - bounds[5] ) )
{
pt[2] = bounds[4];
}
else
{
pt[2] = bounds[5];
}
}
break;
case 1:
if ( qMin( fabs( pt[0] - bounds[0] ), fabs( pt[0] - bounds[1] ) ) <
qMin( fabs( pt[2] - bounds[4] ), fabs( pt[2] - bounds[5] ) ) )
{
v[0] = 1;
if ( fabs( pt[0] - bounds[0] ) < fabs( pt[0] - bounds[1] ) )
{
pt[0] = bounds[0];
}
else
{
pt[0] = bounds[1];
}
}
else
{
v[2] = 1;
if ( fabs( pt[2] - bounds[4] ) < fabs( pt[2] - bounds[5] ) )
{
pt[2] = bounds[4];
}
else
{
pt[2] = bounds[5];
}
}
break;
case 2:
if ( qMin( fabs( pt[0] - bounds[0] ), fabs( pt[0] - bounds[1] ) ) <
qMin( fabs( pt[1] - bounds[2] ), fabs( pt[1] - bounds[3] ) ) )
{
v[0] = 1;
if ( fabs( pt[0] - bounds[0] ) < fabs( pt[0] - bounds[1] ) )
{
pt[0] = bounds[0];
}
else
{
pt[0] = bounds[1];
}
}
else
{
v[1] = 1;
if ( fabs( pt[1] - bounds[2] ) < fabs( pt[1] - bounds[3] ) )
{
pt[1] = bounds[2];
}
else
{
pt[1] = bounds[3];
}
}
break;
}
pt[m_nSliceHighlighted] = slicepos[m_nSliceHighlighted];
double pt1[3], pt2[3];
this->ScreenToWorld( x, y, -100, pt1[0], pt1[1], pt1[2] );
this->ScreenToWorld( x, y, 100, pt2[0], pt2[1], pt2[2] );
double new_pt[3], t = 0;
vtkPlane::IntersectWithLine( pt1, pt2, v, pt, t, new_pt );
if ( t > 100000 )
{
new_pt[0] = pt[0];
new_pt[1] = pt[1];
new_pt[2] = pt[2];
}
if ( new_pt[m_nSliceHighlighted] < bounds[m_nSliceHighlighted*2] )
{
new_pt[m_nSliceHighlighted] = bounds[m_nSliceHighlighted*2];
}
else if ( new_pt[m_nSliceHighlighted] > bounds[m_nSliceHighlighted*2+1] )
{
new_pt[m_nSliceHighlighted] = bounds[m_nSliceHighlighted*2+1];
}
mainwnd->OffsetSlicePosition( m_nSliceHighlighted, new_pt[m_nSliceHighlighted] - slicepos[m_nSliceHighlighted], false );
slicepos[m_nSliceHighlighted] = new_pt[m_nSliceHighlighted];
lc->SetCursorRASPosition( slicepos );
}