Hello,
I wonder if someone could help me?
I am trying to generate a series of cut planes as images
using NONGUI_PLUGIN_DEFINITIONS as per the example script
and using a python loop to move a ScalarCutPlane and write
a new image to file for each iteration.
I've appended the script that I've used to do this. As far
as possible I've tried to follow examples from the example
scripts to minimise madness creeping into the code.
The two problems I'm having are:
1) NONGUI_PLUGIN_DEFINITIONS doesn't appear to actually run
without a GUI; I'm guessing from comments and from the 'Tips'
section of the Mayavi site that this is a known issue and the
best bet for now is to stick with the xvfb hack. Is this the
case?
2) When I reset the depth of my cut plane using:
cp.implicit_plane.origin=(1, -1, od)
where cp = ScalarCutPlane() and od is the value of depth
which changes on each loop iteration, the rendered plane
doesn't actually change from image to image. I've tried
loading the VTU in an interactive session, dragging the
cut plane to the python command shell, and changing this
by hand - it still doesn't change immediately, but when
I click on the display it moves the plane outline and when
I click on the grid outline it moves the rendered plane.
I guess there is something I should call to update the
display having changed the plane origin, but I haven't been
able to track it down! Advice would be much appreciated.
If there's anything I'm doing in a really crackpot way I would
appreciate correction and guidance :-)
Thanks in advance for any help,
Tim
Script is as follows:
#!/usr/bin/env python
from enthought.mayavi.app import Mayavi, NONGUI_PLUGIN_DEFINITIONS
import sys
class MyClass(Mayavi):
def run(self):
from enthought.mayavi.sources.vtk_xml_file_reader import VTKXMLFileReader
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.text import Text
from enthought.mayavi.modules.scalar_cut_plane import ScalarCutPlane
script = self.script
fg_color = (0.1, 0.1, 0.2)
bg_color = (1, 1, 0.8)
script.new_scene()
src = VTKXMLFileReader()
src.initialize("output.vtu")
script.add_source(src)
sfc = Surface()
script.add_module(sfc)
sfc.actor.property.representation='wireframe'
sfc.actor.property.opacity=0.03
t = Text()
script.add_module(t)
t.actor.scaled_text = False
t.actor.text_property.font_size = 34
t.actor.text_property.color = fg_color
t.width =
1.0*t.actor.mapper.get_width(t.scene.renderer)/t.scene.renderer.size[0]
height =
1.0*t.actor.mapper.get_height(t.scene.renderer)/t.scene.renderer.size[1]
t.x_position = 0.5-t.width/2
t.y_position = 1-height
t.scene.background = bg_color
t.scene.z_minus_view()
t.scene.camera.zoom(1.5)
cp = ScalarCutPlane()
script.add_module(cp)
cp.implicit_plane.normal = 0,0,1
cp.implicit_plane.widget.enabled=False
cp.module_manager.scalar_lut_manager.use_default_range = False
cp.module_manager.scalar_lut_manager.data_range = [-0.00005, 0.00005]
s = script.engine.current_scene
for depth in range (0,6000,1000):
od = depth/10000
cp.implicit_plane.origin=(1, -1, od)
t.text = 'Output ' + str(depth) + 'm'
filename = 'cutplane' + str(depth) + '.jpg'
s.scene.save(filename)
if __name__ == '__main__':
mc = MyClass()
mc.main(plugin_defs=NONGUI_PLUGIN_DEFINITIONS)
--
Dr. Timothy M Bond, Operations Manager
Applied Modelling and Computation Group
http://amcg.ese.ic.ac.uk/index.php?title=Dr_Tim_Bond
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
MayaVi-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mayavi-users
