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"""
This module creates a 'Locator' axis, that can be used to mark a three
dimensional point in your data.
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: 1.6 $"
__date__ = "$Date: 2005/08/02 18:30:13 $"
import Base.Objects, Common
import Tkinter, tkColorChooser
import vtk
import vtkPipeline.vtkMethodParser
debug = Common.debug
class Locator (Base.Objects.Module):
""" This module creates a 'Locator' axis, that can be used to mark
a three dimensional point in your data. """
def __init__ (self, mod_m):
debug ("In Locator::__init__ ()")
Common.state.busy ()
Base.Objects.Module.__init__ (self, mod_m)
self.axes = vtk.vtkAxes ()
self.axes.SymmetricOn ()
self.mapper = self.ax_map = vtk.vtkPolyDataMapper ()
self.ax_map.SetInput (self.axes.GetOutput ())
self.actor = self.locator = vtk.vtkActor ()
self.locator.SetMapper (self.ax_map)
self.locator.GetProperty ().SetLineWidth (3.0)
self.locator.GetProperty ().SetColor (*Common.config.fg_color)
self.root = None
self.resoln_var = []
self.slider = []
for i in range (3):
self.resoln_var.append (Tkinter.DoubleVar ())
self.coord_var = Tkinter.StringVar ()
self.locator_var = Tkinter.IntVar ()
self.scale_var = Tkinter.DoubleVar ()
self.data_out = self.mod_m.GetOutput ()
self._initialize ()
self.axes.SetOrigin (self.def_dim[0], self.def_dim[1],
self.def_dim[2])
self.axes.SetScaleFactor (self.max_len*0.3)
self.actor.GetProperty().SetAmbient(1.0)
self.actor.GetProperty().SetDiffuse(0.0)
self.renwin.add_actors (self.locator)
self.pipe_objs = self.locator
self.renwin.Render ()
Common.state.idle ()
def _initialize (self):
debug ("In Locator::_initialize ()")
self.def_dim = []
self.dim = []
self.coord = [0, 0, 0]
dim1 = self.data_out.GetBounds ()
self.max_len = -1.0
for i in range (3):
self.dim.append ((dim1[2*i], dim1[2*i+1]))
val = dim1[2*i] + dim1[2*i+1]
self.def_dim.append (val*0.5)
mag = abs (dim1[2*i]) + abs (dim1[2*i+1])
if mag > self.max_len:
self.max_len = mag
self.resoln_var[i].set (mag*0.01)
if dim1[2*i] != dim1[2*i+1]:
self.coord[i] = 1
self.set_resolution ()
def __del__ (self):
debug ("In Locator::__del__ ()")
if self.locator:
self.renwin.remove_actors (self.locator)
self.renwin.Render ()
def SetInput (self, source):
debug ("In Locator::SetInput ()")
Common.state.busy ()
self.data_out = source
self._initialize ()
Common.state.idle ()
def save_config (self, file):
debug ("In Locator::save_config ()")
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for obj in (self.axes, self.ax_map, self.locator,
self.locator.GetProperty ()):
p.dump (obj, file)
def load_config (self, file):
debug ("In Locator::load_config ()")
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for obj in (self.axes, self.ax_map, self.locator,
self.locator.GetProperty ()):
p.load (obj, file)
self._initialize ()
self.renwin.Render ()
def config_changed (self):
debug ("In Locator::config_changed ()")
self.locator.GetProperty ().SetColor (*Common.config.fg_color)
def make_main_gui (self):
debug ("In Locator::make_main_gui ()")
frame = Tkinter.Frame (self.root, relief='ridge', bd=2)
frame.pack (side='top', pady=2, fill='both', expand=1)
self.locator_var.set (self.locator.GetVisibility())
locator_but = Tkinter.Checkbutton (frame,
text="Toggle Locator Axis",
variable=self.locator_var,
onvalue=1, offvalue=0,
command=self.set_locator)
locator_but.grid (row=0, column=0, columnspan=3,
pady=4, sticky='w')
rw = 1
self.scale_var.set (self.axes.GetScaleFactor ())
lab = Tkinter.Label (frame, text="Scale Factor: ")
lab.grid (row=rw, column=0, columnspan=1, sticky='w', pady=4)
entr = Tkinter.Entry (frame, width=10, relief='sunken',
textvariable=self.scale_var)
entr.grid (row=rw, column=1, columnspan=2, sticky='w', pady=4)
entr.bind ("<Return>", self.set_scale_factor)
rw = rw + 1
self.coord_var.set (self.axes.GetOrigin ())
lab = Tkinter.Label (frame, text="Locator position:")
lab.grid (row=rw, column=0, columnspan=1, sticky='w')
entr = Tkinter.Entry (frame, width=20, relief='sunken',
textvariable=self.coord_var)
entr.grid (row=rw, column=1, columnspan=2, sticky='w')
rw = rw + 1
def_name = ["Move along X-axis", "Move along Y-axis ",
"Move along Z-axis"]
res_name = ["X resolution:", "Y resolution:", "Z resolution:"]
pos = self.axes.GetOrigin ()
for i in range (0,3):
if self.coord[i] == 1:
sl = Tkinter.Scale (frame, label=def_name[i],
from_=self.dim[i][0], to=self.dim[i][1],
length="8c", orient='horizontal',
resolution=self.resoln_var[i].get ())
sl.set (pos[i])
sl.grid (row=rw, column=0, columnspan=3, sticky='ew')
rw = rw + 1
sl.bind ("<ButtonRelease>", self.change_locator)
lab = Tkinter.Label (frame, text=res_name[i])
lab.grid (row=rw, column=0, sticky='w')
entr = Tkinter.Entry (frame, width=5, relief='sunken',
textvariable=self.resoln_var[i])
entr.grid (row=rw, column=1, sticky='w')
entr.bind ("<Return>", self.set_resolution)
rw = rw+1
self.slider.append (sl)
self.make_actor_gui (representation=0)
def set_locator (self, event=None):
debug ("In Locator::set_locator ()")
self.locator.SetVisibility (self.locator_var.get ())
self.renwin.Render ()
def change_locator (self, event=None):
debug ("In Locator::change_locator ()")
val = []
for i in range (0, 3):
if self.coord[i] == 1:
val.append (self.slider[i].get ())
else:
val.append (self.def_dim[i])
self.axes.SetOrigin (*val)
self.coord_var.set (val)
self.renwin.Render ()
def set_resolution (self, event=None):
debug ("In Locator::set_resolution ()")
if self.slider:
for i in range (3):
if self.coord[i] == 1:
val = self.resoln_var[i].get ()
self.slider[i].config (resolution=val)
def set_scale_factor (self, event=None):
debug ("In Locator::set_scale_factor ()")
self.axes.SetScaleFactor (self.scale_var.get ())
self.renwin.Render ()
def close_gui (self, event=None):
debug ("In Locator::close_gui ()")
Base.Objects.VizObject.close_gui (self, event)
self.slider = []
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