/// <summary>
/// 左键释放时获取选择的对象
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void m_interactor_LeftButtonReleaseEvt(vtkObject sender, vtkObjectEventArgs e)
{
if (m_pickTarget == ePickTarget.None)
{
return;
}
//if (m_iren.GetControlKey() != 0)
// m_pickBoolean = ePickBollean.Add;
//else if (m_iren.GetShiftKey() != 0)
// m_pickBoolean = ePickBollean.Sub;
m_iren.GetEventPosition(ref endx, ref endy);
#region 点选对象
if (m_pickMode == ePickMode.DotPickMode) //如果是点选模式
{
vtkCellPicker cellPicker = new vtkCellPicker();
cellPicker.SetTolerance(0.005);
if (0 == cellPicker.Pick(endx, endy, 0, m_renderer))
{
return; //什么都没有选到就返回
}
FEMActor actor = cellPicker.GetActor() as FEMActor;
if (actor == null)
{
return;
}
if (m_pickTarget == ePickTarget.Actor)
{ //如果选择对象为
actor.IsSelected = true;
m_RWCtrl.Invalidate(); //貌似必须要用这个函数,update 不行
OnObjectsSelected(sender, e);
}
else if (m_pickTarget == ePickTarget.Cell)
{
int cellId = cellPicker.GetCellId();
actor.AddCellId(cellId, m_pickBoolean);
OnObjectsSelected(sender, e);
//if (cellId > 0)
// Console.WriteLine("dotselect cellid:{0}", cellId);
}
else if (m_pickTarget == ePickTarget.Point)
{
int pointId = cellPicker.GetPointId();
if (pointId != -1)
{
actor.AddPointId(pointId, m_pickBoolean);
OnObjectsSelected(sender, e);
// Console.WriteLine("dotselect pointid:{0}", pointId);
}
}
}
#endregion
else if (m_pickMode == ePickMode.RectPickMode) //如果是框选
{
vtkAreaPicker areaPicker = new vtkAreaPicker();
if (0 == areaPicker.AreaPick(startx, starty, endx, endy, m_renderer))
{ //如果什么也没选到就返回
//this.impactViewForm.ClearAllSelectCells();
return;
}
vtkProp3DCollection selectedActors = areaPicker.GetProp3Ds();
selectedActors.InitTraversal();
FEMActor selectedActor;
while ((selectedActor = selectedActors.GetNextProp3D() as FEMActor) != null)
{
vtkSelection selection = new vtkSelection();
vtkSelectionNode selectionNode = new vtkSelectionNode();
selection.AddNode(selectionNode);
vtkIdFilter idFilter = new vtkIdFilter();
idFilter.FieldDataOn();
idFilter.SetInput(selectedActor.GetMapper().GetInput());
idFilter.Update();
vtkExtractSelection frustum = new vtkExtractSelection();
frustum.SetInput(0, idFilter.GetOutput());
frustum.SetInput(1, selection);
selectionNode.Initialize();
selectionNode.SetContentType((int)vtkSelectionNode.SelectionContent.FRUSTUM);
if (m_pickTarget == ePickTarget.Cell)//如果选择的目标是cell
{
selectionNode.SetFieldType((int)vtkSelectionNode.SelectionField.CELL);
}
else if (m_pickTarget == ePickTarget.Point) //如果选择的目标是point
{
selectionNode.SetFieldType((int)vtkSelectionNode.SelectionField.POINT);
}
vtkPoints points = areaPicker.GetClipPoints();
vtkDoubleArray frustumcorners = new vtkDoubleArray();
frustumcorners.SetNumberOfComponents(4);
frustumcorners.SetNumberOfTuples(8);
for (int i = 0; i < 8; ++i)
{
double[] point = points.GetPoint(i);
frustumcorners.SetTuple4(i, point[0], point[1], point[2], 0.0);
}
selectionNode.SetSelectionList(frustumcorners);
frustum.Update();
vtkUnstructuredGrid grid = new vtkUnstructuredGrid();
grid = vtkUnstructuredGrid.SafeDownCast(frustum.GetOutput());
vtkIdTypeArray ids = null;
if (m_pickTarget == ePickTarget.Cell)
{
ids = vtkIdTypeArray.SafeDownCast(grid.GetCellData().GetArray("vtkOriginalCellIds"));
if (ids == null)
{
continue;
}
selectedActor.AddCellId(ids, m_pickBoolean);
OnObjectsSelected(sender, e);
}
else if (m_pickTarget == ePickTarget.Point)
{
ids = vtkIdTypeArray.SafeDownCast(grid.GetPointData().GetArray("vtkOriginalPointIds"));
if (ids == null)
{
continue;
}
selectedActor.AddPointId(ids, m_pickBoolean);
OnObjectsSelected(sender, e);
}
}
}
}
private void SelectAreaClick(vtkObject sender, vtkObjectEventArgs e)
{
int[] clickPos = Inter.GetEventPosition();
vtkAreaPicker picker = vtkAreaPicker.New();
picker.AreaPick(clickPos[0], clickPos[1], clickPos[0] + 100, clickPos[1] + 100, Viewport);
if (picker.GetActor() != null)
{
vtkPlanes Boundary = picker.GetFrustum();
vtkExtractGeometry Box = vtkExtractGeometry.New();
Box.SetImplicitFunction(Boundary);
Box.SetInput(picker.GetActor().GetMapper().GetInput());
vtkVertexGlyphFilter glyphFilter = vtkVertexGlyphFilter.New();
glyphFilter.SetInputConnection(Box.GetOutputPort());
glyphFilter.Update();
vtkPolyData selected = glyphFilter.GetOutput();
vtkPoints points = vtkPoints.New();
vtkUnstructuredGrid grid = vtkUnstructuredGrid.New();
for (int i = 0; i < selected.GetNumberOfPoints(); i++)
{
points.InsertNextPoint(selected.GetPoint(i)[0], selected.GetPoint(i)[1], selected.GetPoint(i)[2]);
}
grid.SetPoints(points);
vtkSphereSource sphere = vtkSphereSource.New();
sphere.SetPhiResolution(6);
sphere.SetThetaResolution(6);
sphere.SetRadius(0.1);
vtkGlyph3D glyph3D = vtkGlyph3D.New();
glyph3D.SetInput(grid);
glyph3D.SetSourceConnection(sphere.GetOutputPort());
vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
mapper.SetInputConnection(glyph3D.GetOutputPort());
//double[] P = new double[3];
//bool selected = false;
//vtkPoints points = Faces.GetPoints();
//double[] ClickedPoint = PointPicker.GetActor().GetMapper().GetInput().GetPoint(PointPicker.GetPointId());
//for (int i = 0; i < points.GetNumberOfPoints(); i++)
//{
// if (Math.Abs(points.GetPoint(i)[0] - ClickedPoint[0]) < 1e-6 &&
// Math.Abs(points.GetPoint(i)[1] - ClickedPoint[1]) < 1e-6 &&
// Math.Abs(points.GetPoint(i)[2] - ClickedPoint[2]) < 1e-6)
// {
// selected = true;
// P = points.GetPoint(i);
// break;
// }
//}
//
//if (selected == true)
//{
// SelectionPoints.InsertNextPoint(P[0], P[1], P[2]);
//
// SelectionGlyph = vtkGlyph3D.New();
// SelectionGlyph.SetInput(SelectionPolyData);
// SelectionGlyph.SetSourceConnection(SelectionSphere.GetOutputPort());
// SelectionMapper.SetInputConnection(SelectionGlyph.GetOutputPort());
//
// // Refresh Viewport
// Refresh();
//}
}
}