def pickPoint(displayPoint,
view,
obj=None,
pickType='points',
tolerance=0.01,
returnNormal=False):
assert pickType in ('points', 'cells', 'render')
view = view or app.getCurrentRenderView()
assert view
if isinstance(obj, str):
obj = om.findObjectByName(obj)
assert obj
if pickType == 'render':
picker = vtk.vtkPropPicker()
else:
picker = vtk.vtkPointPicker(
) if pickType == 'points' else vtk.vtkCellPicker()
picker.SetTolerance(tolerance)
if obj:
if isinstance(obj, list):
for o in obj:
picker.AddPickList(o.actor)
obj = None
else:
picker.AddPickList(obj.actor)
picker.PickFromListOn()
picker.Pick(displayPoint[0], displayPoint[1], 0, view.renderer())
pickedProp = picker.GetViewProp()
pickedPoint = np.array(picker.GetPickPosition())
pickedDataset = pickedProp.GetMapper().GetInput() if isinstance(
pickedProp, vtk.vtkActor) else None
pickedNormal = np.zeros(3)
if returnNormal:
if pickType == 'cells':
pickedNormal = np.array(picker.GetPickNormal())
elif pickType == 'points' and pickedDataset:
pointId = picker.GetPointId()
normals = pickedDataset.GetPointData().GetNormals()
if normals:
pickedNormal = np.array(normals.GetTuple3(pointId))
if obj:
if returnNormal:
return (pickedPoint, pickedNormal) if pickedProp else (None, None)
else:
return pickedPoint if pickedProp else None
else:
return (pickedPoint, pickedProp, pickedDataset,
pickedNormal) if returnNormal else (pickedPoint, pickedProp,
pickedDataset)
def pickPoint(displayPoint, view, obj=None, pickType='points', tolerance=0.01, returnNormal=False):
assert pickType in ('points', 'cells', 'render')
view = view or app.getCurrentRenderView()
assert view
if isinstance(obj, str):
obj = om.findObjectByName(obj)
assert obj
if pickType == 'render':
picker = vtk.vtkPropPicker()
else:
picker = vtk.vtkPointPicker() if pickType == 'points' else vtk.vtkCellPicker()
picker.SetTolerance(tolerance)
if obj is not None:
if isinstance(obj, list):
for o in obj:
picker.AddPickList(o.actor)
obj = None
else:
picker.AddPickList(obj.actor)
picker.PickFromListOn()
picker.Pick(displayPoint[0], displayPoint[1], 0, view.renderer())
pickedProp = picker.GetViewProp()
pickedPoint = np.array(picker.GetPickPosition())
pickedDataset = pickedProp.GetMapper().GetInput() if isinstance(pickedProp, vtk.vtkActor) else None
pickedNormal = np.zeros(3)
if returnNormal:
if pickType == 'cells':
pickedNormal = np.array(picker.GetPickNormal())
elif pickType == 'points' and pickedDataset:
pointId = picker.GetPointId()
normals = pickedDataset.GetPointData().GetNormals()
if normals:
pickedNormal = np.array(normals.GetTuple3(pointId))
#if pickedDataset and pickType == 'cells':
# print 'point id:', pickedDataset.GetCell(picker.GetCellId()).GetPointIds().GetId(picker.GetSubId())
#if pickType == 'points':
# print 'point id:', picker.GetPointId()
if obj:
if returnNormal:
return (pickedPoint, pickedNormal) if pickedProp else (None, None)
else:
return pickedPoint if pickedProp else None
else:
return (pickedPoint, pickedProp, pickedDataset, pickedNormal) if returnNormal else (pickedPoint, pickedProp, pickedDataset)
def pickImage(displayPoint, view, obj=None):
picker = vtk.vtkCellPicker()
if isinstance(obj, str):
obj = om.findObjectByName(obj)
assert obj
if obj:
picker.AddPickList(obj.actor)
picker.PickFromListOn()
picker.Pick(displayPoint[0], displayPoint[1], 0, view.renderer())
pickedDataset = picker.GetDataSet()
if obj:
return picker.GetPointIJK()
else:
return pickedDataset, picker.GetPointIJK()
def pickImage(displayPoint, view, obj=None):
picker = vtk.vtkCellPicker()
if isinstance(obj, str):
obj = om.findObjectByName(obj)
assert obj
if obj:
picker.AddPickList(obj.actor)
picker.PickFromListOn()
picker.Pick(displayPoint[0], displayPoint[1], 0, view.renderer())
pickedDataset = picker.GetDataSet()
if obj:
return picker.GetPointIJK()
else:
return pickedDataset, picker.GetPointIJK()
def pickPoint(displayPoint, view, obj=None, pickType='points', tolerance=0.01):
"""
:param displayPoint:
:param view:
:param obj:
:param pickType:
:param tolerance:
:return: FieldContainer with fields
pickedPoint
pickedProp
pickedDataset
pickedNormal - is None if no normal can be comp
pickedCellId - is None unless pickType="cells"
"""
assert pickType in ('points', 'cells', 'render')
view = view or app.getCurrentRenderView()
assert view
if isinstance(obj, str):
obj = om.findObjectByName(obj)
assert obj
if pickType == 'render':
picker = vtk.vtkPropPicker()
else:
picker = vtk.vtkPointPicker() if pickType == 'points' else vtk.vtkCellPicker()
picker.SetTolerance(tolerance)
if obj is not None:
if isinstance(obj, list):
for o in obj:
picker.AddPickList(o.actor)
obj = None
else:
picker.AddPickList(obj.actor)
picker.PickFromListOn()
picker.Pick(displayPoint[0], displayPoint[1], 0, view.renderer())
pickedProp = picker.GetViewProp()
pickedPoint = np.array(picker.GetPickPosition())
pickedDataset = pickedProp.GetMapper().GetInput() if isinstance(pickedProp, vtk.vtkActor) else None
if pickType == "cells":
pickedCellId = picker.GetCellId()
else:
pickedCellId = None
# populate pickedNormal if possible
pickedNormal = None
if pickType == 'cells':
pickedNormal = np.array(picker.GetPickNormal())
elif pickType == 'points' and pickedDataset:
pointId = picker.GetPointId()
normals = pickedDataset.GetPointData().GetNormals()
if normals:
pickedNormal = np.array(normals.GetTuple3(pointId))
#if pickedDataset and pickType == 'cells':
# print 'point id:', pickedDataset.GetCell(picker.GetCellId()).GetPointIds().GetId(picker.GetSubId())
#if pickType == 'points':
# print 'point id:', picker.GetPointId()
fields = FieldContainer(
pickedPoint=pickedPoint,
pickedProp=pickedProp,
pickedDataset=pickedDataset,
pickedNormal=pickedNormal,
pickedCellId=pickedCellId
)
return fields
def pickPoint(displayPoint, view, obj=None, pickType='points', tolerance=0.01):
"""
:param displayPoint:
:param view:
:param obj:
:param pickType:
:param tolerance:
:return: FieldContainer with fields
pickedPoint
pickedProp
pickedDataset
pickedNormal - is None if no normal can be comp
pickedCellId - is None unless pickType="cells"
"""
assert pickType in ('points', 'cells', 'render')
view = view or app.getCurrentRenderView()
assert view
if isinstance(obj, str):
obj = om.findObjectByName(obj)
assert obj
if pickType == 'render':
picker = vtk.vtkPropPicker()
else:
picker = vtk.vtkPointPicker(
) if pickType == 'points' else vtk.vtkCellPicker()
picker.SetTolerance(tolerance)
if obj is not None:
if isinstance(obj, list):
for o in obj:
picker.AddPickList(o.actor)
obj = None
else:
picker.AddPickList(obj.actor)
picker.PickFromListOn()
picker.Pick(displayPoint[0], displayPoint[1], 0, view.renderer())
pickedProp = picker.GetViewProp()
pickedPoint = np.array(picker.GetPickPosition())
pickedDataset = pickedProp.GetMapper().GetInput() if isinstance(
pickedProp, vtk.vtkActor) else None
if pickType == "cells":
pickedCellId = picker.GetCellId()
else:
pickedCellId = None
# populate pickedNormal if possible
pickedNormal = None
if pickType == 'cells':
pickedNormal = np.array(picker.GetPickNormal())
elif pickType == 'points' and pickedDataset:
pointId = picker.GetPointId()
normals = pickedDataset.GetPointData().GetNormals()
if normals:
pickedNormal = np.array(normals.GetTuple3(pointId))
#if pickedDataset and pickType == 'cells':
# print 'point id:', pickedDataset.GetCell(picker.GetCellId()).GetPointIds().GetId(picker.GetSubId())
#if pickType == 'points':
# print 'point id:', picker.GetPointId()
fields = FieldContainer(pickedPoint=pickedPoint,
pickedProp=pickedProp,
pickedDataset=pickedDataset,
pickedNormal=pickedNormal,
pickedCellId=pickedCellId)
return fields