"""
This module makes it possible to view streamlines, streamtubes, and
stream ribbons for any type of vector data. Any number of point
sources can be added and deleted. A fairly powerful UI is provided.
This module should work with any dataset.
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: 1.8 $"
__date__ = "$Date: 2005/08/02 18:30:13 $"
import Base.Objects, Common
import Tkinter, tkColorChooser, tkMessageBox, tkFileDialog, math
import vtk
import vtkPipeline.vtkMethodParser
import vtkPipeline.ConfigVtkObj
tk_fopen = tkFileDialog.askopenfilename
tk_fsave = tkFileDialog.asksaveasfilename
debug = Common.debug
class SeedManager:
""" Abstracts out a seed manager. This class is capable of
handling a vtkPointSource as well as a vtkDiskSource. The
DiskSource is used for 2D data. The DiskSource is appropriately
oriented so that it is on the right plane."""
def __init__(self):
""" Create the SeedManager. Call initialize to setup the seed."""
debug ("In SeedManager::__init__ ()")
self.dim = 0
self.last_cen = [0.0]*3
self.seed = None
self.transform = None
def initialize (self, valid_coord):
""" Initializes the seed given an array of valid co-ordinate
directions. [x-axis, y-axis, z_axis] is the format. For
instance if x-axis == 0 then the data is along the YZ plane.
This method is responsible for actually creating the seed. """
debug ("In SeedManager::initialize ()")
assert len (valid_coord) == 3
self.dim = reduce (lambda x, y: x+y, valid_coord)
if self.dim == 3:
self.seed = vtk.vtkPointSource ()
else:
self.seed = vtk.vtkDiskSource ()
self.seed.SetRadialResolution (1)
self.seed.SetInnerRadius (0.0)
self.transform = vtk.vtkTransformFilter ()
self.transform.SetTransform (vtk.vtkTransform ())
self.transform.SetInput (self.seed.GetOutput ())
self.orient_2d (valid_coord)
def orient_2d (self, valid_coord):
""" Orients the vtkDiskSource for the given co-ordinates."""
debug ("In SeedManager::orient_2d ()")
assert len (valid_coord) == 3
transform = self.transform.GetTransform ()
if valid_coord[0] == 0: # Data plane is along YZ plane
transform.RotateY(90)
elif valid_coord[1] == 0: # Data plane is along XZ plane
transform.RotateX(90)
elif valid_coord[2] == 0: # Data plane is along XY plane
pass # default orientation!
def set_n_points (self, n):
""" Set the number of points created by the seed."""
debug ("In SeedManager::set_n_points ()")
if self.dim == 3:
self.seed.SetNumberOfPoints (n)
else:
self.seed.SetCircumferentialResolution (n)
def get_n_points (self):
""" Get the number of seed points."""
debug ("In SeedManager::get_n_points ()")
if self.dim == 3:
return self.seed.GetNumberOfPoints ()
else:
return self.seed.GetCircumferentialResolution ()
def set_radius (self, rad):
""" Set the seed radius. """
debug ("In SeedManager::set_radius ()")
if self.dim == 3:
self.seed.SetRadius (rad)
else:
self.seed.SetOuterRadius (rad)
def set_center (self, cen):
""" Set the seed's center given an array of co-ordinates."""
debug ("In SeedManager::set_center ()")
if self.dim == 3:
self.seed.SetCenter (*cen)
else:
diff = map (lambda x, y: x-y, cen, self.last_cen)
tr = self.transform.GetTransform ()
tr.Translate (*diff)
self.last_cen = cen[:]
def GetOutput (self):
""" Get the VTK Output of the appropriate seed."""
debug ("In SeedManager::GetOutput ()")
if self.dim == 3:
return self.seed.GetOutput ()
else:
return self.transform.GetOutput ()
class PointStreamer (Base.Objects.Module):
"""Provides the basic class for streamline support. """
def __init__ (self, mod_m):
debug ("In PointStreamer::__init__ ()")
Common.state.busy ()
Base.Objects.Module.__init__ (self, mod_m)
self.sphere_src = vtk.vtkSphereSource ()
self.sphere_map = vtk.vtkPolyDataMapper ()
self.sphere_act = vtk.vtkActor ()
self.seed = SeedManager ()
self.radius = 1.0
self.cen = [0.0, 0.0, 0.0]
self.n_pnt = 50
self.strmln_mode = 0
self.color_mode = 1 # 1 is vector, 0 is scalar, -1 is no color
self.integration_mode = 2 # 2 is Runge-Kutta 2 and 4 is RK 4.
self.strmln = vtk.vtkStreamLine ()
self.ribbonf = vtk.vtkRibbonFilter ()
self.tubef = vtk.vtkTubeFilter ()
self.mapper = self.stream_map = vtk.vtkPolyDataMapper ()
self.actor = self.stream_act = vtk.vtkActor ()
self.done_init = 0
Common.state.idle ()
def __del__ (self):
debug ("In PointStreamer::__del__ ()")
Common.state.busy ()
self.renwin.remove_actors ((self.sphere_act, self.stream_act))
self.renwin.Render ()
Common.state.idle ()
def get_defaults (self):
debug ("In PointStreamer::get_defaults ()")
self.resoln_var = []
self.def_dim = []
self.dim = []
self.data_dimn = 0
self.coord = [0,0,0]
dim1 = self.mod_m.get_data_source ().GetOutput ().GetBounds ()
max_len = -1.0
for i in range (0,3):
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+1] - dim1[2*i])
if mag > max_len:
max_len = mag
var = Tkinter.DoubleVar ()
var.set (mag*0.02)
self.resoln_var.append (var)
if dim1[2*i] != dim1[2*i+1]:
self.coord[i] = 1
self.data_dimn = self.data_dimn + 1
# now that we know enough about the data - initialize the seed.
self.seed.initialize (self.coord)
self.cen = self.def_dim
self.radius = max_len*0.1
self.sphere_src.SetCenter (*self.cen)
self.sphere_src.SetRadius(self.radius)
# setting some sane defaults
self.ribbonf.SetWidth (self.radius*0.075)
self.tubef.SetRadius (self.radius*0.075)
def initialize (self, master=None):
debug ("In PointStreamer::initialize ()")
self.get_defaults ()
self.sphere_src.SetThetaResolution (10)
self.sphere_src.SetPhiResolution (10)
self.sphere_map.SetInput (self.sphere_src.GetOutput ())
self.sphere_act.SetMapper (self.sphere_map)
self.sphere_act.GetProperty ().SetColor (0.0, 0.0, 0.5)
self.sphere_act.GetProperty ().SetOpacity (0.5)
self.max_v = self.mod_m.get_vector_data_range ()[1]
self.seed.set_n_points (self.n_pnt)
self.strmln.SetSource (self.seed.GetOutput ())
self.strmln.SpeedScalarsOn ()
self.stream_map.SetInput (self.strmln.GetOutput ())
self.stream_map.SetScalarRange (0, self.max_v)
self.stream_map.SetLookupTable (self.mod_m.get_vector_lut ())
self.stream_act.SetMapper (self.stream_map)
self.stream_act.VisibilityOff ()
self.renwin.add_actors ((self.sphere_act, self.stream_act))
self.configure (master)
def SetInput (self, source):
debug ("In PointStreamer::SetInput ()")
self.strmln.SetInput (source)
self.do_color_mode ()
def make_ball_gui (self, master):
debug ("In PointStreamer::make_ball_gui ()")
frame = Tkinter.Frame (master, relief="ridge", bd=2)
frame.pack (side='top')
self.coord_var = Tkinter.StringVar ()
self.coord_var.set (self.cen)
lab = Tkinter.Label (frame, text="Center of Source:")
lab.grid (row=0, column=0, columnspan=1, sticky='w')
entr = Tkinter.Entry (frame, width=20, relief='sunken',
textvariable=self.coord_var)
entr.grid (row=0, column=1, columnspan=2, sticky='w')
def_name = ["Move along X-axis", "Move along Y-axis ",
"Move along Z-axis"]
res_name = ["X resolution:", "Y resolution:", "Z resolution:"]
self.slider = []
rw = 1
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 (self.cen[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.radius_var = Tkinter.DoubleVar ()
self.radius_var.set (self.radius)
self.n_pnt_var = Tkinter.DoubleVar ()
self.n_pnt_var.set (self.n_pnt)
lab = Tkinter.Label (frame, text="Radius of source:")
lab.grid (row=rw, column=0, sticky='w')
entr = Tkinter.Entry (frame, width=5, relief='sunken',
textvariable=self.radius_var)
entr.grid (row=rw, column=1, sticky='w')
entr.bind ("<Return>", self.setup_ball)
rw = rw + 1
lab = Tkinter.Label (frame, text="Number of seed points:")
lab.grid (row=rw, column=0, sticky='w')
entr = Tkinter.Entry (frame, width=5, relief='sunken',
textvariable=self.n_pnt_var)
entr.grid (row=rw, column=1, sticky='w')
rw = rw + 1
entr.bind ("<Return>", self.setup_ball)
self.ball_var = Tkinter.IntVar ()
self.ball_var.set (1)
cb = Tkinter.Checkbutton (frame, text="Show PointSource",
variable=self.ball_var, onvalue=1,
offvalue=0, command=self.show_ball)
cb.grid (row=rw, column=0, columnspan=2, sticky='w')
def make_color_mode_gui (self, master):
debug ("In PointStreamer::make_color_mode_gui ()")
f = Tkinter.Frame (master, bd=2)
f.pack (side='top')
frame = Tkinter.Frame (f, relief="ridge")
frame.grid (row=0, column=0, sticky='w')
self.color_var = Tkinter.IntVar ()
self.color_var.set (self.color_mode)
rb = Tkinter.Radiobutton (frame, text="No Coloring",
variable=self.color_var, value=-1,
command=self.set_color_mode_gui)
rb.grid (row=0, column=0, sticky='w')
rb = Tkinter.Radiobutton (frame, text="Scalar Coloring",
variable=self.color_var, value=0,
command=self.set_color_mode_gui)
rb.grid (row=1, column=0, sticky='w')
rb = Tkinter.Radiobutton (frame, text="Vector Coloring",
variable=self.color_var, value=1,
command=self.set_color_mode_gui)
rb.grid (row=2, column=0, sticky='w')
but = Tkinter.Button (frame, text="Streamline Color",
command=self.set_stream_color)
but.grid (row=3, column=0, sticky='ew')
frame = Tkinter.Frame (f, relief="ridge")
frame.grid (row=0, column=1, sticky='w')
self.integration_var = Tkinter.IntVar ()
self.integration_var.set (self.integration_mode)
lab = Tkinter.Label (frame, text="Integration Type")
lab.grid (row=0, column=0, columnspan=1, sticky='ew')
rb = Tkinter.Radiobutton (frame, text="Runge-Kutta 2nd Order",
variable=self.integration_var, value=2,
command=self.set_integration_gui)
rb.grid (row=1, column=0, sticky='w')
rb = Tkinter.Radiobutton (frame, text="Runge-Kutta 4th Order",
variable=self.integration_var, value=4,
command=self.set_integration_gui)
rb.grid (row=2, column=0, sticky='w')
def make_other_gui (self, master):
debug ("In PointStreamer::make_other_gui ()")
frame = Tkinter.Frame (master, relief="ridge", bd=2)
frame.pack (side='top')
lab = Tkinter.Label (frame, text="Integration parameters:")
lab.grid (row=0, column=0, sticky='w', pady=5)
but = Tkinter.Button (frame, text="Configure",
command=self.setup_strmln)
but.grid (row=0, column=1, sticky='w')
self.strmln_var = Tkinter.IntVar ()
self.strmln_var.set (self.strmln_mode)
rb = Tkinter.Radiobutton (frame, text="Show Streamlines",
variable=self.strmln_var, value=0,
command=self.set_streamline_mode)
rb.grid (row=1, column=0, sticky='w')
rb = Tkinter.Radiobutton (frame, text="Show Streamribbons",
variable=self.strmln_var, value=1,
command=self.set_streamline_mode)
rb.grid (row=2, column=0, sticky='w')
but = Tkinter.Button (frame, text="Configure",
command=self.setup_ribbonf)
but.grid (row=2, column=1, sticky='w')
rb = Tkinter.Radiobutton (frame, text="Show Streamtubes",
variable=self.strmln_var, value=2,
command=self.set_streamline_mode)
rb.grid (row=3, column=0, sticky='w')
but = Tkinter.Button (frame, text="Configure",
command=self.setup_tubef)
but.grid (row=3, column=1, sticky='w')
but = Tkinter.Button (frame, text="Update changes",
command=self.update, underline=0)
but.grid (row=4, column=0, sticky='w')
self.root.bind ("<Alt-u>", self.update)
but = Tkinter.Button (frame, text="Close",
command=self.quit, underline=0)
but.grid (row=4, column=1, sticky='w')
self.root.bind ("<Alt-c>", self.quit)
def _lift (self):
"""Lifts an already created configuration window to the
top."""
debug ("In PointStreamer::_lift ()")
self.root.deiconify ()
self.root.lift ()
self.root.focus_set ()
def configure (self, master=None):
debug ("In PointStreamer::configure ()")
if (self.root and self.root.winfo_exists ()):
return self._lift ()
self.n_pnt = self.seed.get_n_points ()
self.radius = self.sphere_src.GetRadius ()
self.cen = list (self.sphere_src.GetCenter ())
self.root = Tkinter.Toplevel (master)
self.root.transient (master)
self.root.title ("Configure the streamlines.")
self.make_ball_gui (self.root)
self.make_color_mode_gui (self.root)
self.make_actor_gui (scalar=0, color=0, compact=1)
self.make_other_gui (self.root)
self.sphere_act.VisibilityOn ()
self.renwin.Render ()
def setup_ball (self, event=None):
debug ("In PointStreamer::setup_ball ()")
Common.state.busy ()
val = self.n_pnt_var.get ()
self.n_pnt = val
self.seed.set_n_points (self.n_pnt)
val = self.radius_var.get ()
self.radius = val
#self.seed.set_radius (self.radius)
self.sphere_src.SetRadius(self.radius)
self.renwin.Render ()
Common.state.idle ()
def set_streamline_mode (self, event=None):
debug ("In PointStreamer::set_streamline_mode ()")
Common.state.busy ()
self.strmln_mode = self.strmln_var.get ()
self.setup_stream_pipeline ()
self.renwin.Render ()
Common.state.idle ()
def setup_stream_pipeline (self):
debug ("In PointStreamer::setup_stream_pipeline ()")
val = self.strmln_mode
if val == 0:
self.stream_map.SetInput (self.strmln.GetOutput ())
elif val == 1:
self.ribbonf.SetInput (self.strmln.GetOutput ())
self.stream_map.SetInput (self.ribbonf.GetOutput ())
elif val == 2:
self.tubef.SetInput (self.strmln.GetOutput ())
self.stream_map.SetInput (self.tubef.GetOutput ())
def setup_ribbonf (self, event=None):
debug ("In PointStreamer::setup_ribbonf ()")
conf = vtkPipeline.ConfigVtkObj.ConfigVtkObj (self.renwin)
conf.configure (None, self.ribbonf)
def setup_tubef (self, event=None):
debug ("In PointStreamer::setup_tubef ()")
conf = vtkPipeline.ConfigVtkObj.ConfigVtkObj (self.renwin)
conf.configure (None, self.tubef)
def setup_strmln (self, event=None):
debug ("In PointStreamer::setup_strmln ()")
conf = vtkPipeline.ConfigVtkObj.ConfigVtkObj (self.renwin)
conf.configure (None, self.strmln)
def change_locator (self, event=None):
debug ("In PointStreamer::change_locator ()")
val = []
for i in range (0, 3):
if self.coord[i] == 1:
val.append (self.slider[i].get ())
else:
val.append (self.cen[i])
self.sphere_src.SetCenter (*val)
self.cen = val
self.coord_var.set (val)
self.renwin.Render ()
def show_ball (self, event=None):
debug ("In PointStreamer::show_ball ()")
Common.state.busy ()
val = self.ball_var.get ()
if val == 1:
self.sphere_act.VisibilityOn ()
elif val == 0:
self.sphere_act.VisibilityOff ()
self.renwin.Render ()
Common.state.idle ()
def set_resolution (self, event=None):
debug ("In PointStreamer::set_resolution ()")
for i in range (0, 3):
if self.coord[i] == 1:
val = self.resoln_var[i].get ()
self.slider[i].config (resolution=val)
def set_color_mode_gui (self, event=None):
"This sets up the data to setup the actual coloring mode."
debug ("In PointStreamer::set_color_mode_gui ()")
Common.state.busy ()
self.color_mode = self.color_var.get ()
self.do_color_mode ()
self.renwin.Render ()
Common.state.idle ()
def do_color_mode (self):
debug ("In PointStreamer::do_color_mode ()")
if self.color_mode == 1: # Vector Coloring
dr = self.mod_m.get_vector_data_range ()
self.max_v = dr[1]
self.stream_map.ScalarVisibilityOn ()
self.strmln.SpeedScalarsOn ()
self.stream_map.SetScalarRange (dr)
self.stream_map.SetLookupTable (self.mod_m.get_vector_lut ())
elif self.color_mode == 0: # Scalar Coloring
self.stream_map.ScalarVisibilityOn ()
self.strmln.SpeedScalarsOff ()
dr = self.mod_m.get_scalar_data_range ()
self.stream_map.SetScalarRange (dr)
self.stream_map.SetLookupTable (self.mod_m.get_scalar_lut ())
elif self.color_mode == -1: # No colouring
self.stream_map.ScalarVisibilityOff ()
self.strmln.SpeedScalarsOff ()
def set_stream_color (self, event=None):
debug ("In PointStreamer::set_stream_color ()")
clr = self.stream_act.GetProperty ().GetColor ()
init_clr = "#%02x%02x%02x"%(clr[0]*255, clr[1]*255, clr[2]*255)
color = tkColorChooser.askcolor (title="Change axes color",
initialcolor=init_clr)
if color[1] is not None:
Common.state.busy ()
clr = Common.tk_2_vtk_color (color[0])
self.stream_act.GetProperty ().SetColor (*clr)
self.renwin.Render ()
Common.state.idle ()
if self.color_mode != -1:
msg = "Warning: This setting will have effect only if "\
"the coloring mode is set to 'No Coloring'."
Common.print_err (msg)
def set_integration_gui (self, event=None):
debug ("In PointStreamer::set_integration_gui ()")
val = self.integration_var.get()
self.integration_mode = val
self.update_integration_mode ()
def update_integration_mode (self):
debug ("In PointStreamer::update_integration_mode ()")
Common.state.busy ()
val = self.integration_mode
try:
if val == 2:
self.strmln.SetIntegrator (vtk.vtkRungeKutta2 ())
elif val == 4:
self.strmln.SetIntegrator (vtk.vtkRungeKutta4 ())
except AttributeError, err:
msg = "Sorry unable to change the integration type. "\
"Try upgrading your VTK installation to a more "\
"recent version."
Common.print_err (msg)
self.renwin.Render ()
Common.state.idle ()
def update (self, event=None):
debug ("In PointStreamer::update ()")
Common.state.busy ()
self.seed.set_center (self.cen)
self.seed.set_radius (self.radius)
self.seed.set_n_points (self.n_pnt)
if not self.done_init:
self.strmln.SetInput (self.mod_m.GetOutput ())
self.done_init = 1
self.stream_act.VisibilityOn ()
self.strmln.Update ()
self.renwin.Render ()
Common.state.idle ()
def save_config (self, file):
debug ("In PointStreamer::save_config ()")
file.write ("%d, %d, %d\n"%(self.n_pnt, self.strmln_mode,
self.integration_mode))
# For backward compatibility - the dummy is actually unused.
dummy_seed = vtk.vtkPointSource ()
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for i in (self.sphere_src, self.sphere_map, self.sphere_act,
self.sphere_act.GetProperty (),
dummy_seed, self.strmln, self.ribbonf, self.tubef,
self.stream_map, self.stream_act,
self.stream_act.GetProperty ()):
p.dump (i, file)
def load_config (self, file):
debug ("In PointStreamer::load_config ()")
self.setup_pipeline ()
val = file.readline ()
try:
self.n_pnt, self.strmln_mode, self.integration_mode = eval (val)
except ValueError: # old format
self.n_pnt, self.strmln_mode = eval (val)
# For backward compatibility - the dummy is actually unused.
dummy_seed = vtk.vtkPointSource ()
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for i in (self.sphere_src, self.sphere_map, self.sphere_act,
self.sphere_act.GetProperty (),
dummy_seed, self.strmln, self.ribbonf, self.tubef,
self.stream_map, self.stream_act,
self.stream_act.GetProperty ()):
p.load (i, file)
self.setup_stream_pipeline ()
self.radius = self.sphere_src.GetRadius ()
self.cen = list (self.sphere_src.GetCenter ())
self.color_mode = self.strmln.GetSpeedScalars ()
if self.stream_map.GetScalarVisibility () == 0:
self.color_mode = -1
self.do_color_mode ()
self.update ()
self.update_integration_mode ()
def setup_pipeline (self):
debug ("In PointStreamer::setup_pipeline ()")
self.get_defaults ()
self.sphere_map.SetInput (self.sphere_src.GetOutput ())
self.sphere_act.SetMapper (self.sphere_map)
self.max_v = self.mod_m.get_vector_data_range ()[1]
self.strmln.SetSource (self.seed.GetOutput ())
self.stream_map.SetInput (self.strmln.GetOutput ())
self.stream_map.SetScalarRange (0, self.max_v)
self.stream_map.SetLookupTable (self.mod_m.get_vector_lut ())
self.stream_act.SetMapper (self.stream_map)
self.stream_act.VisibilityOff ()
self.renwin.add_actors ((self.sphere_act, self.stream_act))
def quit (self, event=None):
debug ("In PointStreamer::quit ()")
self.sphere_act.VisibilityOff ()
self.renwin.Render ()
self.root.destroy ()
self.root = None
def get_actors (self):
debug ("In PointStreamer::get_actors ()")
return [self.sphere_act, self.stream_act]
class Streamlines (Base.Objects.Module):
""" This module makes it possible to view streamlines,
streamtubes, and stream ribbons for any type of vector data. Any
number of point sources can be added and deleted. A fairly
powerful UI is provided. This module should work with any
dataset. """
def __init__ (self, mod_m):
debug ("In Streamlines::__init__ ()")
Common.state.busy ()
Base.Objects.Module.__init__ (self, mod_m)
self.stream_ctl = {}
self.pipe_objs = []
self.n_streams = 0
Common.state.idle ()
def __del__ (self):
debug ("In Streamlines::__del__ ()")
Common.state.busy ()
for key in self.stream_ctl.keys ():
del self.stream_ctl[key]
del self.pipe_objs
self.renwin.Render ()
Common.state.idle ()
def SetInput (self, source):
debug ("In Streamlines::SetInput ()")
Common.state.busy ()
for obj in self.stream_ctl.values ():
obj.SetInput (source)
Common.state.idle ()
def add_streamline (self, key):
debug ("In Streamlines::add_streamline ()")
ctl = PointStreamer (self.mod_m)
ctl.initialize (self.root.master)
self.stream_ctl[key] = ctl
self.pipe_objs.extend (ctl.get_actors ())
def config_streamline (self, key):
debug ("In Streamlines::config_streamline ()")
self.stream_ctl[key].configure (self.root.master)
def delete_streamline (self, key):
debug ("In Streamlines::delete_streamline ()")
del self.stream_ctl[key]
def save_config (self, file):
debug ("In Streamlines::save_config ()")
n = len (self.stream_ctl)
file.write ("%d\n"%n)
for key in self.stream_ctl.keys ():
self.stream_ctl[key].save_config (file)
file.flush ()
def load_config (self, file):
debug ("In Streamlines::load_config ()")
start_val = self.n_streams
n = eval (file.readline ())
for i in range (0, n):
ctl = PointStreamer (self.mod_m)
ctl.load_config (file)
key = "PointSource%d"%(start_val+i)
self.stream_ctl[key] = ctl
self.pipe_objs.extend (ctl.get_actors ())
self.n_streams = self.n_streams + 1
def make_custom_gui (self):
debug ("In Streamlines::make_custom_gui ()")
self.make_pipeline_gui ()
self.make_main_gui ()
self.make_close_button ()
def make_main_gui (self):
debug ("In Streamlines::make_main_gui ()")
frame = Tkinter.Frame (self.root, relief='ridge', bd=2)
frame.pack (side='top')
scr = Tkinter.Scrollbar (frame, orient='vertical')
self.str_lst = Tkinter.Listbox (frame, yscrollcommand=scr.set,
selectmode='single')
scr.config (command=self.str_lst.yview)
self.str_lst.grid (row=0, column=0, sticky='ewns')
scr.grid (row=0, column=1, sticky='ns')
self.str_lst.bind ("<Double-Button-1>", self.config_streamline_gui)
for key in self.stream_ctl.keys ():
self.str_lst.insert ('end', key)
but1 = Tkinter.Button (frame, text="Add streamline source",
command=self.add_streamline_gui)
but2 = Tkinter.Button (frame, text="Delete streamline source",
command=self.delete_streamline_gui)
but1.grid (row=1, column=0, columnspan=2, sticky='ew')
but2.grid (row=2, column=0, columnspan=2, sticky='ew')
but2 = Tkinter.Button (frame, text="Save streamlines",
command=self.save)
but2.grid (row=3, column=0, columnspan=2, sticky='ew')
but2 = Tkinter.Button (frame, text="Load streamlines",
command=self.load)
but2.grid (row=4, column=0, columnspan=2, sticky='ew')
def add_streamline_gui (self):
debug ("In Streamlines::add_streamline_gui ()")
Common.state.busy ()
str = "PointSource%d"%self.n_streams
self.str_lst.insert ('end', str)
self.n_streams = self.n_streams + 1
self.add_streamline (str)
Common.state.idle ()
def delete_streamline_gui (self):
debug ("In Streamlines::delete_streamline_gui ()")
Common.state.busy ()
str = self.str_lst.get ('active')
msg = "You are about to delete the streamlines due to the "\
"%s. Are you sure you want to do this?" %(str)
ans = tkMessageBox.askyesno ("Delete Streamline?", msg)
if ans == 1:
self.str_lst.delete ('active')
self.delete_streamline (str)
Common.state.idle ()
def config_streamline_gui (self, event=None):
debug ("In Streamlines::config_streamline_gui ()")
str = self.str_lst.get ('active')
self.config_streamline (str)
def save (self):
debug ("In Streamlines::save ()")
file_name = tk_fsave (title="Save streamlines",
initialdir=Common.config.initial_dir,
defaultextension=".str",
filetypes=[("Streamline files", "*.str"),
("All files", "*")])
if file_name:
Common.state.busy ()
file = open (file_name, "w")
self.save_config (file)
file.close ()
Common.state.idle ()
def load (self):
debug ("In Streamlines::load ()")
file_name = tk_fopen (title="Load streamlines",
initialdir=Common.config.initial_dir,
filetypes=[("Streamline files", "*.str"),
("All files", "*")])
if file_name:
Common.state.busy ()
file = open (file_name, "r")
n_orig = len (self.stream_ctl)
self.load_config (file)
n = len (self.stream_ctl) - n_orig
for i in range (0, n):
str = "PointSource%d"%self.n_streams
self.str_lst.insert ('end', str)
self.n_streams = self.n_streams + 1
file.close ()
Common.state.idle ()
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