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"""
This module shows a grid plane of the given input grid. The plane can
be shown as a wireframe or coloured surface with or without scalar
visibility. This works only for structured grid, structured point and
rectilinear grid data. Useful for debugging and displaying your
created grid.
This code is distributed under the conditions of the BSD license. See
LICENSE.txt for details.
Copyright (c) 2001-2002, Prabhu Ramachandran.
"""
__author__ = "Prabhu Ramachandran <prabhu_r@users.sf.net>"
__version__ = "$Revision: 1.11 $"
__date__ = "$Date: 2005/08/02 18:30:13 $"
import Base.Objects, Common
import Tkinter, tkColorChooser
import vtk
import vtkPipeline.vtkMethodParser
debug = Common.debug
def set_extents (plane, lst):
debug ("In set_extents ()")
plane.SetExtent (lst[0], lst[1], lst[2], lst[3], lst[4], lst[5])
class GridPlane (Base.Objects.Module):
""" This module shows a grid plane of the given input grid. The
plane can be shown as a wireframe or coloured surface with or
without scalar visibility. This works only for structured grid,
structured point and rectilinear grid data. Useful for debugging
and displaying your created grid."""
def __init__ (self, mod_m):
debug ("In GridPlane::__init__ ()")
Common.state.busy ()
Base.Objects.Module.__init__ (self, mod_m)
self.act = None
out = self.mod_m.GetOutput ()
if out.IsA('vtkStructuredGrid'):
self.plane = vtk.vtkStructuredGridGeometryFilter ()
elif out.IsA ('vtkStructuredPoints') or out.IsA('vtkImageData'):
if hasattr (vtk, 'vtkImageDataGeometryFilter'):
self.plane = vtk.vtkImageDataGeometryFilter ()
else:
self.plane = vtk.vtkStructuredPointsGeometryFilter ()
elif out.IsA ('vtkRectilinearGrid'):
self.plane = vtk.vtkRectilinearGridGeometryFilter ()
else:
msg = "This module does not support the %s dataset."%(out.GetClassName())
raise Base.Objects.ModuleException, msg
self.mapper = self.map = vtk.vtkPolyDataMapper ()
self.actor = self.act = vtk.vtkActor ()
self._initialize ()
self._gui_init ()
self.renwin.Render ()
Common.state.idle ()
def __del__ (self):
debug ("In GridPlane::__del__ ()")
if self.act:
self.renwin.remove_actors (self.act)
self.renwin.Render ()
def _initialize (self):
debug ("In GridPlane::_initialize ()")
self.map.SetLookupTable (self.mod_m.get_scalar_lut ())
self.map.SetScalarRange (self.mod_m.get_scalar_data_range ())
data_out = self.mod_m.GetOutput ()
dim = data_out.GetDimensions ()
self.dim = [dim[0] -1, dim[1] -1, dim[2] -1]
self.plane.SetInput (data_out)
self.map.SetInput (self.plane.GetOutput ())
self.act.SetMapper (self.map)
self.act.GetProperty ().SetColor (*Common.config.fg_color)
self.act.GetProperty ().BackfaceCullingOff ()
self.act.GetProperty ().FrontfaceCullingOff ()
self.act.GetProperty ().SetRepresentation (1)
self.map.SetScalarVisibility (0)
data_out = self.mod_m.GetOutput ()
self.renwin.add_actors (self.act)
# used for the pipeline browser
self.pipe_objs = self.act
def _gui_init (self):
debug ("In GridPlane::_gui_init ()")
self.axis_var = Tkinter.IntVar ()
self.slider = None
self.slider_pos = 0
self.axis_var.set (0)
self.change_axis ()
self._auto_sweep_init ()
self.sweep_step.set (1)
def SetInput (self, source):
debug ("In GridPlane::SetInput ()")
Common.state.busy ()
self.plane.SetInput (source)
dr = self.mod_m.get_scalar_data_range ()
self.map.SetScalarRange (dr)
dim = source.GetDimensions ()
self.dim = [dim[0] -1, dim[1] -1, dim[2] -1]
self.config_extents()
Common.state.idle ()
def save_config (self, file):
debug ("In GridPlane::save_config ()")
file.write ("%d, %d\n"%(self.axis_var.get (), self.slider_pos))
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for obj in (self.plane, self.map, self.act,
self.act.GetProperty ()):
p.dump (obj, file)
def load_config (self, file):
debug ("In GridPlane::load_config ()")
a, pos = eval (file.readline ())
self.axis_var.set (a)
self.slider_pos = pos
p = vtkPipeline.vtkMethodParser.VtkPickler ()
if self.plane.GetClassName () == 'vtkImageDataGeometryFilter':
p.load (self.plane, file, 'vtkStructuredPointsGeometryFilter')
else:
p.load (self.plane, file, 'vtkImageDataGeometryFilter')
for obj in (self.map, self.act,
self.act.GetProperty ()):
p.load (obj, file)
self.config_extents ()
def config_changed (self):
debug ("In GridPlane::config_changed ()")
self.act.GetProperty ().SetColor (*Common.config.fg_color)
def make_main_gui (self):
debug ("In GridPlane::make_main_gui ()")
frame = Tkinter.Frame (self.root, relief='ridge', bd=2)
frame.pack (side='top', fill='both', expand=1)
txt = ("X-Axis", "Y-Axis", "Z-Axis")
#self.axis_on_but = []
for i in range (3):
b = Tkinter.Radiobutton (frame, text=txt[i],
variable=self.axis_var,
value=i, command=self.change_axis)
b.grid (row=i, column=0)
#self.axis_on_but.append (b)
val = self.dim[self.axis_var.get ()]
self.slider = Tkinter.Scale (frame, label="Position", from_=0,
to=val, length="8c",
orient='horizontal')
self.slider.set (self.slider_pos)
self.slider.grid (row=3, column=0, pady=3)
self.slider.bind ("<ButtonRelease>", self.change_slider)
self.make_actor_gui ()
self.make_auto_sweep_gui ()
def config_extents (self):
debug ("In GridPlane::config_extents ()")
Common.state.busy ()
i = self.axis_var.get ()
dim = self.dim
extents = [0, dim[0], 0, dim[1], 0, dim[2]]
extents[2*i] = self.slider_pos
extents[2*i+1] = self.slider_pos
set_extents (self.plane, extents)
self.renwin.Render ()
Common.state.idle ()
def change_axis (self, event=None):
debug ("In GridPlane::change_axis ()")
i = self.axis_var.get ()
if self.slider:
self.slider.config (from_=0, to=self.dim[i])
self.config_extents ()
def change_slider (self, event=None):
debug ("In GridPlane::change_slider ()")
val = self.slider.get ()
self.slider_pos = val
self.config_extents ()
def do_sweep (self, event=None):
debug ("In GridPlane::do_sweep ()")
if self.sweep_var.get ():
val = int (1000*self.sweep_delay.get ())
self.root.after (val, self.update_sweep)
def update_sweep (self):
debug ("In GridPlane::update_sweep ()")
if self.sweep_var.get ():
d_pos = self.sweep_step.get ()
pos = self.slider_pos + d_pos
if ((d_pos > 0) and (pos > self.dim[self.axis_var.get ()])):
pos = 0
elif (d_pos < 0) and (pos < 0):
pos = self.dim[self.axis_var.get ()]
self.slider.set (pos)
self.change_slider ()
val = int (1000*self.sweep_delay.get ())
self.root.after (val, self.update_sweep)
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