void Test()
{
foreach (var actor in m_actorDict.Keys)
{
int xmin = 0;
int xlength = 1000;
int xmax = xmin + xlength;
int ymin = 0;
int ylength = 1000;
int ymax = ymin + ylength;
int[] pos = { xmin, xmin + xlength, ymin, ymin + ylength };
#region RECT
vtkPoints pts = vtkPoints.New();
pts.InsertPoint(0, xmin, ymin, 0);
pts.InsertPoint(1, xmax, ymin, 0);
pts.InsertPoint(2, xmax, ymax, 0);
pts.InsertPoint(3, xmin, ymax, 0);
vtkCellArray rect = vtkCellArray.New();
rect.InsertNextCell(5);
rect.InsertCellPoint(0);
rect.InsertCellPoint(1);
rect.InsertCellPoint(2);
rect.InsertCellPoint(3);
rect.InsertCellPoint(0);
vtkPolyData selectRect = vtkPolyData.New();
selectRect.SetPoints(pts);
selectRect.SetLines(rect);
vtkPolyDataMapper2D rectMapper = vtkPolyDataMapper2D.New();
rectMapper.SetInput(selectRect);
vtkActor2D rectActor = vtkActor2D.New();
rectActor.SetMapper(rectMapper);
m_render.AddActor(rectActor);
#endregion
vtkIdFilter ids = vtkIdFilter.New();
ids.SetInput(actor.GetMapper().GetInput());
//ids.SetInputConnection( actor.GetMapper().GetOutputPort());
ids.PointIdsOn();
ids.FieldDataOn();
vtkSelectVisiblePoints visPts = vtkSelectVisiblePoints.New();
visPts.SetInput(ids.GetOutput());
visPts.SetRenderer(m_render);
visPts.SelectInvisibleOn();
visPts.SelectionWindowOn();
//visPts.SelectInvisibleOff();
visPts.SetSelection(pos[0], pos[1], pos[2], pos[3]);
vtkLabeledDataMapper labelMapper = vtkLabeledDataMapper.New();
labelMapper.SetInputConnection(visPts.GetOutputPort());
// labelMapper.SetInput(visPts.GetInput());
labelMapper.SetLabelModeToLabelFieldData();
vtkActor2D actor2d = vtkActor2D.New();
actor2d.SetMapper(labelMapper);
m_render.AddActor(actor2d);
}
m_render.Render();
}
void Test2()
{
int xmin = 0;
int xlength = 1000;
int xmax = xmin + xlength;
int ymin = 0;
int ylength = 1000;
int ymax = ymin + ylength;
#region 定义显示的rectActor
vtkPoints pts = vtkPoints.New();
pts.InsertPoint(0, xmin, ymin, 0);
pts.InsertPoint(1, xmax, ymin, 0);
pts.InsertPoint(2, xmax, ymax, 0);
pts.InsertPoint(3, xmin, ymax, 0);
vtkCellArray rect = vtkCellArray.New();
rect.InsertNextCell(5);
rect.InsertCellPoint(0);
rect.InsertCellPoint(1);
rect.InsertCellPoint(2);
rect.InsertCellPoint(3);
rect.InsertCellPoint(0);
vtkPolyData selectRect = vtkPolyData.New();
selectRect.SetPoints(pts);
selectRect.SetLines(rect);
vtkPolyDataMapper2D rectMapper = vtkPolyDataMapper2D.New();
rectMapper.SetInput(selectRect);
vtkActor2D rectActor = vtkActor2D.New();
rectActor.SetMapper(rectMapper);
#endregion
vtkSphereSource sphere = vtkSphereSource.New();
vtkPolyDataMapper sphereMapper = vtkPolyDataMapper.New();
sphereMapper.SetInputConnection(sphere.GetOutputPort());
// sphereMapper.SetImmediateModeRendering(1);
vtkActor sphereActor = vtkActor.New();
sphereActor.SetMapper(sphereMapper);
vtkIdFilter ids = vtkIdFilter.New();
ids.SetInputConnection(sphere.GetOutputPort());
ids.PointIdsOn();
ids.CellIdsOn();
ids.FieldDataOn();
#region 设置要显示的点的及其label
vtkSelectVisiblePoints visPts = vtkSelectVisiblePoints.New();
visPts.SetInputConnection(ids.GetOutputPort());
visPts.SetRenderer(m_render);
visPts.SelectionWindowOn();
visPts.SetSelection(xmin, xmin + xlength, ymin, ymin + ylength);
vtkLabeledDataMapper pointsMapper = vtkLabeledDataMapper.New();
pointsMapper.SetInputConnection(visPts.GetOutputPort());
pointsMapper.SetLabelModeToLabelFieldData();
pointsMapper.GetLabelTextProperty().SetColor(0, 255, 0);
pointsMapper.GetLabelTextProperty().BoldOff();
vtkActor2D pointLabels = vtkActor2D.New();
pointLabels.SetMapper(pointsMapper);
#endregion
#region 设置要显示的cell的id及其label
vtkCellCenters cc = vtkCellCenters.New();
cc.SetInputConnection(ids.GetOutputPort());
vtkSelectVisiblePoints visCells = vtkSelectVisiblePoints.New();
visCells.SetInputConnection(cc.GetOutputPort());
visCells.SetRenderer(m_render);
visCells.SelectionWindowOn();
visCells.SetSelection(xmin, xmin + xlength, ymin, ymin + ylength);
///显示每个Cell的id
vtkLabeledDataMapper cellMapper = vtkLabeledDataMapper.New();
cellMapper.SetInputConnection(visCells.GetOutputPort());
cellMapper.SetLabelModeToLabelFieldData();
cellMapper.GetLabelTextProperty().SetColor(255, 0, 0);
vtkActor2D cellLabels = vtkActor2D.New();
cellLabels.SetMapper(cellMapper);
#endregion
m_render.AddActor(sphereActor);
m_render.AddActor2D(rectActor);
m_render.AddActor2D(pointLabels);
// m_render.AddActor2D(cellLabels);
}
