def Scatter():
# Create some random points to view.
data = Data()
p, r = data.slice
pd = tvtk.PolyData()
pd.points = p
verts = arange( 0, len( r ), 1 )
verts.shape = ( len( r ), 1 )
pd.verts = verts
pd.point_data.scalars = r
pd.point_data.scalars.name = 'scalars'
# Now visualize it using mayavi2.
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
mayavi.new_scene()
d = VTKDataSource()
d.data = pd
mayavi.add_source( d )
mayavi.add_module( Outline() )
s = Surface()
mayavi.add_module( s )
s.actor.property.set( representation='p', point_size=2 )
def Lines():
# Create some random points to view.
data = Data()
p, r = data.slice
pd = tvtk.PolyData()
pd.points = p
verts = arange( 0, len( r ), 1 )
verts.shape = ( len( r ), 1 )
pd.verts = verts
pd.point_data.scalars = r
pd.point_data.scalars.name = 'scalars'
pd.lines = arange( 0, len( r ), 1 ).reshape( len( r ) / 15, 15 )
# Now visualize it using mayavi2.
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.iso_surface import IsoSurface
from enthought.mayavi.modules.streamline import Streamline
mayavi.new_scene()
d = VTKDataSource()
d.data = pd
mayavi.add_source( d )
o = Outline()
mayavi.add_module( o )
s = Surface() #enable_contours=True
mayavi.add_module( s )
s.actor.property.set( representation='p', point_size=2 )
def add_data(tvtk_data):
"""Add a TVTK data object `tvtk_data` to the mayavi pipleine.
"""
d = VTKDataSource()
d.data = tvtk_data
mayavi.add_source(d)
return d
def add_data(tvtk_data):
"""Add a TVTK data object `tvtk_data` to the mayavi pipleine.
"""
d = VTKDataSource()
d.data = tvtk_data
mayavi.add_source(d)
return d
def add_points(self, points):
g = mlab.Glyphs(points, None, None)
d = VTKDataSource()
d.data = g.poly_data
self.scene.add_child(d)
v = Vectors()
v.glyph.color_mode = "no_coloring"
v.glyph.glyph_source = tvtk.PointSource(radius=0, number_of_points=1)
d.add_child(v)
def add_points(self, points):
g = mlab.Glyphs(points, None, None)
d = VTKDataSource()
d.data = g.poly_data
self.scene.add_child(d)
v = Vectors()
v.glyph.color_mode = 'no_coloring'
v.glyph.glyph_source = tvtk.PointSource(radius=0,
number_of_points=1)
d.add_child(v)
def add_dataset(dataset, name='', **kwargs):
"""Add a dataset object to the Mayavi pipeline.
**Parameters**
:dataset: a tvtk dataset, or a Mayavi source.
The dataset added to the Mayavi pipeline
:figure: a figure identifier number or string, None or False, optionnal.
If no `figure` keyword argument is given, the data
is added to the current figure (a new figure if created if
necessary).
If a `figure` keyword argument is given, it should either the name
the number of the figure the dataset should be added to, or None,
in which case the data is not added to the pipeline.
If figure is False, a null engine is created. This null
engine does not create figures, and is mainly usefull for
tensting, or using the VTK algorithms without visualization.
**Returns**
The corresponding Mayavi source is returned.
"""
if isinstance(dataset, tvtk.Object):
d = VTKDataSource()
d.data = dataset
elif isinstance(dataset, Source):
d = dataset
else:
raise TypeError, \
"first argument should be either a TVTK object"\
" or a mayavi source"
if len(name) > 0:
d.name = name
if not 'figure' in kwargs:
# No figure has been specified, retrieve the default one.
gcf()
engine = get_engine()
elif kwargs['figure'] is False:
# Get a null engine that we can use.
engine = get_null_engine()
elif kwargs['figure'] is not None:
figure = kwargs['figure']
engine = engine_manager.find_figure_engine(figure)
engine.current_scene = figure
else:
# Return early, as we don't want to add the source to an engine.
return d
engine.add_source(d)
return d
def add_dataset(dataset, name='', **kwargs):
"""Add a dataset object to the Mayavi pipeline.
**Parameters**
:dataset: a tvtk dataset, or a Mayavi source.
The dataset added to the Mayavi pipeline
:figure: a figure identifier number or string, None or False, optionnal.
If no `figure` keyword argument is given, the data
is added to the current figure (a new figure if created if
necessary).
If a `figure` keyword argument is given, it should either the name
the number of the figure the dataset should be added to, or None,
in which case the data is not added to the pipeline.
If figure is False, a null engine is created. This null
engine does not create figures, and is mainly usefull for
tensting, or using the VTK algorithms without visualization.
**Returns**
The corresponding Mayavi source is returned.
"""
if isinstance(dataset, tvtk.Object):
d = VTKDataSource()
d.data = dataset
elif isinstance(dataset, Source):
d = dataset
else:
raise TypeError, \
"first argument should be either a TVTK object"\
" or a mayavi source"
if len(name) > 0:
d.name = name
if not 'figure' in kwargs:
# No figure has been specified, retrieve the default one.
gcf()
engine = get_engine()
elif kwargs['figure'] is False:
# Get a null engine that we can use.
engine = get_null_engine()
elif kwargs['figure'] is not None:
figure = kwargs['figure']
engine = engine_manager.find_figure_engine(figure)
engine.current_scene = figure
else:
# Return early, as we don't want to add the source to an engine.
return d
engine.add_source(d)
return d
def add_source_data(self, data):
from enthought.mayavi.filters.poly_data_normals import PolyDataNormals
d = VTKDataSource()
d.data = data
obj = self.scene.add_child(d)
w = WarpScalar()
d.add_child(w)
n = PolyDataNormals()
n.filter.feature_angle = 45
w.add_child(n)
s = Surface()
n.add_child(s)
def add_source_data(self, data):
from enthought.mayavi.filters.poly_data_normals import PolyDataNormals
d = VTKDataSource()
d.data = data
obj = self.scene.add_child(d)
w = WarpScalar()
d.add_child(w)
n = PolyDataNormals()
n.filter.feature_angle = 45
w.add_child(n)
s = Surface()
n.add_child(s)
def setUp(self):
"""Initial setting up of test fixture, automatically called by
TestCase before any other test method is invoked"""
e = NullEngine()
# Uncomment to see visualization for debugging etc.
# e = Engine()
e.start()
s = e.new_scene()
self.e = e
self.s = s
############################################################
# Create a new scene and set up the visualization.
# Make the grid
grid = self.make_grid4scatter()
e.add_source(grid)
eg = ExtractGrid()
e.add_filter(eg)
nb_ticks = 6
eg.x_ratio = eg.y_ratio = eg.z_ratio = 100 / (nb_ticks - 1) / 2
gpx = GridPlane()
e.add_module(gpx)
gpx.grid_plane.axis = "x"
gpy = GridPlane()
e.add_module(gpy)
gpy.grid_plane.axis = "y"
gpz = GridPlane()
e.add_module(gpz)
gpz.grid_plane.axis = "z"
# Add the scatter
d = VTKDataSource()
d.data = self.make_scatter()
e.add_source(d)
a = Axes()
e.add_module(a)
a.axes.number_of_labels = nb_ticks
self.eg = eg
self.gpx = gpx
self.gpy = gpy
self.gpz = gpz
self.scene = e.current_scene
return
def setUp(self):
"""Initial setting up of test fixture, automatically called by
TestCase before any other test method is invoked"""
e = NullEngine()
# Uncomment to see visualization for debugging etc.
#e = Engine()
e.start()
s = e.new_scene()
self.e = e
self.s = s
############################################################
# Create a new scene and set up the visualization.
#Make the grid
grid = self.make_grid4scatter()
e.add_source(grid)
eg = ExtractGrid()
e.add_filter(eg)
nb_ticks = 6
eg.x_ratio = eg.y_ratio = eg.z_ratio = 100 / (nb_ticks - 1) / 2
gpx = GridPlane()
e.add_module(gpx)
gpx.grid_plane.axis = 'x'
gpy = GridPlane()
e.add_module(gpy)
gpy.grid_plane.axis = 'y'
gpz = GridPlane()
e.add_module(gpz)
gpz.grid_plane.axis = 'z'
#Add the scatter
d = VTKDataSource()
d.data = self.make_scatter()
e.add_source(d)
a = Axes()
e.add_module(a)
a.axes.number_of_labels = nb_ticks
self.eg = eg
self.gpx = gpx
self.gpy = gpy
self.gpz = gpz
self.scene = e.current_scene
return
def make_grid4scatter(self):
src = VTKDataSource()
xmin, xmax, dx = 100, 200, 2
nx = int((xmax - xmin) / dx) + 1
ymin, ymax, dy = 100, 200, 2
ny = int((ymax - ymin) / dy) + 1
zmin, zmax, dz = 100, 200, 2
nz = int((zmax - zmin) / dz) + 1
image_data = tvtk.ImageData(origin=(xmin, ymin, zmin),
spacing=(dx, dy, dz),
extent=(0, nx - 1, 0, ny - 1, 0, nz - 1))
image_data.whole_extent = image_data.extent
src.data = image_data
return src
def make_grid4scatter(self):
src = VTKDataSource()
xmin, xmax, dx = 100, 200, 2
nx = int((xmax - xmin) / dx) + 1
ymin, ymax, dy = 100, 200, 2
ny = int((ymax - ymin) / dy) + 1
zmin, zmax, dz = 100, 200, 2
nz = int((zmax - zmin) / dz) + 1
image_data = tvtk.ImageData(
origin=(xmin, ymin, zmin), spacing=(dx, dy, dz), extent=(0, nx - 1, 0, ny - 1, 0, nz - 1)
)
image_data.whole_extent = image_data.extent
src.data = image_data
return src
def view():
col0 = numpy.arange(0, numpts - 1, 1)
col1 = numpy.arange(1, numpts, 1)
lines = array([col0, col1]).transpose()
curve = tvtk.PolyData(points=points, lines=lines)
# assign temperature in sequence so that we now the "direction" of the curve
curve.point_data.scalars = numpy.arange(0, numpts, 1)
curve.point_data.scalars.name = 'temperature'
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
#from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.axes import Axes
from enthought.mayavi.modules.text import Text
scene = mayavi.new_scene()
scene.scene.background = (1.0, 1.0, 1.0)
scene.scene.foreground = (0.0, 0.0, 0.0)
src = VTKDataSource(data=curve)
mayavi.add_source(src)
#mayavi.add_module(Outline())
s = Surface()
mayavi.add_module(s)
s.actor.property.set(representation='p', color=(0., 1., 0.), line_width=2)
def create_source(self):
"""Create a VTK source from data in a SfePy-supported file."""
if self.io is None:
self.read_common(self.filename[self.step])
dataset = self.create_dataset()
src = VTKDataSource(data=dataset)
return src
def view():
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.surface import Surface
mayavi.new_scene()
src = VTKDataSource(data=mesh)
mayavi.add_source(src)
s = Surface()
mayavi.add_module(s)
def view():
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.image_plane_widget import ImagePlaneWidget
mayavi2.new_scene()
src = VTKDataSource(data=spoints)
mayavi2.add_source(src)
mayavi2.add_module(Outline())
mayavi2.add_module(ImagePlaneWidget())
def view3d(sgrid):
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.api import Outline, GridPlane
mayavi.new_scene()
src = VTKDataSource(data=sgrid)
mayavi.add_source(src)
mayavi.add_module(Outline())
g = GridPlane()
g.grid_plane.axis = 'x'
mayavi.add_module(g)
def view():
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.vectors import Vectors
mayavi.new_scene()
# The single type one
src = VTKDataSource(data=ug1)
mayavi.add_source(src)
mayavi.add_module(Outline())
mayavi.add_module(Surface())
mayavi.add_module(Vectors())
# Mixed types.
src = VTKDataSource(data=ug2)
mayavi.add_source(src)
mayavi.add_module(Outline())
mayavi.add_module(Surface())
mayavi.add_module(Vectors())
def _mk_structured_grid(self):
""" Creates a StructuredGrid VTK data set using the factory's
attributes.
"""
# FIXME: We need to figure out the dimensions of the data
# here, if any.
sg = tvtk.StructuredGrid(dimensions=self.scalar_data.shape)
sg.points = c_[self.position_x.ravel(),
self.position_y.ravel(),
self.position_z.ravel(), ]
self._vtk_source = sg
self._mayavi_source = VTKDataSource(data=self._vtk_source)
def view():
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.vectors import Vectors
from enthought.mayavi.modules.api import TensorGlyph
from enthought.mayavi.filters.api import WarpVector, ExtractTensorComponents
mayavi.new_scene()
wv = WarpVector()
tc = ExtractTensorComponents()
tc2 = ExtractTensorComponents()
# The single type one
src = VTKDataSource(data = mesh)
print "str1", mesh.point_data.is_array_an_attribute(0)
print "id ", mesh.point_data.has_array("d2")
mayavi.add_source(src)
mayavi.add_filter(wv)
src.add_child(tc)
tc.add_module(Surface())
#src.add_child(Surface())
mesh.point_data.set_active_tensors('first')
src2 = VTKDataSource(data = mesh)
mayavi.add_source(src2)
#tg = TensorGlyph()
#tg.glyph.glyph.scale_factor = 100.
#mayavi.add_module(tg)
#mayavi.add_module(Surface())
#mayavi.add_module(Vectors())
src2.add_child(tc2)
tc2.add_module(Surface())
tc2.scene.z_plus_view()
def view():
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.filters.warp_scalar import WarpScalar
from enthought.mayavi.filters.poly_data_normals import PolyDataNormals
from enthought.mayavi.modules.surface import Surface
mayavi.new_scene()
src = VTKDataSource(data = spoints)
mayavi.add_source(src)
mayavi.add_filter(WarpScalar())
mayavi.add_filter(PolyDataNormals())
s = Surface()
mayavi.add_module(s)
def setUp(self):
"""Initial setting up of test fixture, automatically called by TestCase before any other test method is invoked"""
e = NullEngine()
# Uncomment to see visualization for debugging etc.
#e = Engine()
e.start()
e.new_scene()
self.e = e
sgrid = datasets.generateStructuredGrid()
src = VTKDataSource(data=sgrid)
e.add_source(src)
# Create an outline for the data.
o = Outline()
e.add_module(o)
# Create one ContourGridPlane normal to the 'x' axis.
cgp1 = ContourGridPlane()
e.add_module(cgp1)
# Set the position to the middle of the data.
cgp1.grid_plane.position = 15
# Another with filled contours normal to 'y' axis.
cgp2 = ContourGridPlane()
cgp2.contour.filled_contours = True
# Set the axis and position to the middle of the data.
cgp2.grid_plane.axis = 'y'
cgp2.grid_plane.position = 15
e.add_module(cgp2)
# An isosurface module.
iso = IsoSurface(compute_normals=True)
e.add_module(iso)
iso.contour.contours = [5]
# An interactive scalar cut plane.
cp = ScalarCutPlane()
e.add_module(cp)
ip = cp.implicit_plane
ip.normal = 0, 0, 1
ip.origin = 0.5, 0.5, 1.0
# Since this is running offscreen this seems necessary.
ip.widget.origin = 0.5, 0.5, 1.0
ip.widget.enabled = False
self.scene = e.current_scene
self.cgp2 = cgp2
self.iso = iso
self.cp = cp
return
def main():
# Create some random points to view.
pd = tvtk.PolyData()
pd.points = np.random.random((1000, 3))
verts = np.arange(0, 1000, 1)
verts.shape = (1000, 1)
pd.verts = verts
pd.point_data.scalars = np.random.random(1000)
pd.point_data.scalars.name = "scalars"
# Now visualize it using mayavi2.
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
mayavi.new_scene()
d = VTKDataSource()
d.data = pd
mayavi.add_source(d)
mayavi.add_module(Outline())
s = Surface()
mayavi.add_module(s)
s.actor.property.set(representation="p", point_size=2)
def main():
# Create some random points to view.
pd = tvtk.PolyData()
pd.points = np.random.random((1000, 3))
verts = np.arange(0, 1000, 1)
verts.shape = (1000, 1)
pd.verts = verts
pd.point_data.scalars = np.random.random(1000)
pd.point_data.scalars.name = 'scalars'
# Now visualize it using mayavi2.
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
mayavi.new_scene()
d = VTKDataSource()
d.data = pd
mayavi.add_source(d)
mayavi.add_module(Outline())
s = Surface()
mayavi.add_module(s)
s.actor.property.set(representation='p', point_size=2)
def make_data(self):
script = self.script
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.tvtk.api import tvtk
############################################################
# Create a new scene and set up the visualization.
s = self.new_scene()
# Read a VTK (old style) data file.
r = tvtk.StructuredPointsReader()
r.file_name = get_example_data('heart.vtk')
r.update()
d = VTKDataSource(data=r.output)
script.add_source(d)
def run(self):
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.filters.threshold import Threshold
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.scalar_cut_plane import ScalarCutPlane
self._setupScene()
data = self._readData()
script = self.script
script.add_source(VTKDataSource(data=data))
script.engine.current_object.name = "Error"
error = script.engine.current_object
threshold = Threshold()
script.add_filter(threshold)
threshold.lower_threshold = -3.0
surf = Surface()
script.add_filter(surf)
if showSlice:
surf.actor.property.opacity = 0.3
script.engine.current_object = error
slice = ScalarCutPlane()
script.add_module(slice)
slice.actor.property.opacity = 0.5
slice.implicit_plane.origin = (12.0, 12.0, -12.0)
slice.implicit_plane.normal = (0, -1.0, 0.0)
for obj in [slice, surf]:
colorbar = obj.module_manager.scalar_lut_manager
colorbar.data_range = (threshold.lower_threshold, -2.0)
colorbar.lut_mode = "hot"
colorbar.reverse_lut = True
colorbar.show_scalar_bar = True
colorbar.number_of_labels = 6
colorbar.scalar_bar.label_format = "%-3.1f"
w,h = colorbar.scalar_bar.position2
colorbar.scalar_bar.position2 = (w, 0.1)
light = script.engine.current_scene.scene.light_manager.lights[0]
light.elevation = 20.0
light.azimuth = -45.0
import vtk_geometry
vtk_geometry.setCamera(script.engine.current_scene.scene.camera)
return
def _renderScene(self, data):
script = self.script
w = script.get_active_window()
w.size = self.windowSize
script.new_scene()
scene = script.engine.current_scene.scene
scene.disable_render = True
scene.anti_aliasing_frames = self.aaframes
scene.background = self.colorBg
scene.foreground = self.colorFg
script.add_source(VTKDataSource(data=data))
objTop = script.engine.current_object
script.engine.current_object.name = "fault"
warp = WarpVector()
warp.filter.scale_factor = warpScale
script.add_filter(warp)
surf = Surface()
script.add_module(surf)
colorbar = script.engine.current_object.module_manager.scalar_lut_manager
colorbar.data_name = "Velocity (m/s)"
colorbar.lut_mode = self.lut
colorbar.reverse_lut = self.lutReverse
colorbar.scalar_bar.label_format = "%4.2f"
colorbar.scalar_bar.label_text_property.font_size = 18
colorbar.scalar_bar.label_text_property.shadow = True
colorbar.scalar_bar.label_text_property.italic = False
colorbar.scalar_bar.title_text_property.italic = False
colorbar.scalar_bar.title_text_property.shadow = True
colorbar.show_scalar_bar = False
colorbar.data_range = (0.0, 1.0)
#colorbar.number_of_labels = 0
colorbar.scalar_bar.orientation = "horizontal"
scalar_bar = colorbar.scalar_bar_widget.representation
scalar_bar.position2 = (0.33, 0.12)
scalar_bar.position = (0.01, 0.02)
surf = Surface()
script.add_module(surf)
return
def add_lines(self, points):
np = len(points) - 1
lines = scipy.zeros((np, 2), "l")
lines[:, 0] = scipy.arange(0, np - 0.5, 1, "l")
lines[:, 1] = scipy.arange(1, np + 0.5, 1, "l")
pd = tvtk.PolyData(points=points, lines=lines)
d = VTKDataSource()
d.data = pd
self.scene.add_child(d)
filter = tvtk.TubeFilter(number_of_sides=6)
filter.radius = 0.01
f = FilterBase(filter=filter, name="TubeFilter")
d.add_child(f)
s = Surface()
s.actor.mapper.scalar_visibility = False
d.add_child(s)
def run(self):
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.filters.warp_vector import WarpVector
from enthought.mayavi.filters.extract_vector_norm import ExtractVectorNorm
from enthought.mayavi.modules.surface import Surface
from enthought.mayavi.modules.glyph import Glyph
self._setupScene(showFault=False, showMaterials=False)
data = self._readData()
script = self.script
script.add_source(VTKDataSource(data=data))
script.engine.current_object.name = "Solution"
warp = WarpVector()
warp.filter.scale_factor = scaleFactor
script.add_filter(warp)
norm = ExtractVectorNorm()
script.add_filter(norm)
surf = Surface()
script.add_module(surf)
glyph = Glyph()
script.add_module(glyph)
glyph.actor.property.color = (1,1,1)
glyph.actor.mapper.scalar_visibility = False
glyph.glyph.glyph_position = 'tail'
glyph.glyph.glyph.scale_factor = scaleFactor
glyph.glyph.glyph_source = glyph.glyph.glyph_list[1]
colorbar = script.engine.current_object.module_manager.scalar_lut_manager
colorbar.show_scalar_bar = True
colorbar.data_range = (0.0, 0.5)
colorbar.number_of_labels = 6
colorbar.scalar_bar.label_format = "%3.1f"
w,h = colorbar.scalar_bar.position2
colorbar.scalar_bar.position2 = (w, 0.1)
colorbar.data_name = "Displacement [m]"
import vtk_geometry
vtk_geometry.setCamera(script.engine.current_scene.scene.camera)
return
def _mk_polydata(self):
""" Creates a PolyData vtk data set using the factory's
attributes.
"""
points = c_[self.position_x.ravel(),
self.position_y.ravel(),
self.position_z.ravel(), ]
lines = None
if self.lines:
np = len(points) - 1
lines = zeros((np, 2), 'l')
lines[:, 0] = arange(0, np - 0.5, 1, 'l')
lines[:, 1] = arange(1, np + 0.5, 1, 'l')
self._vtk_source = tvtk.PolyData(points=points, lines=lines)
if (self.connectivity_triangles is not None and self.connected):
assert self.connectivity_triangles.shape[1] == 3, \
"The connectivity list must be Nx3."
self._vtk_source.polys = self.connectivity_triangles
self._mayavi_source = VTKDataSource(data=self._vtk_source)
def zzz_reader(fname, engine):
"""Reader for .zzz files.
Parameters:
-----------
fname -- Filename to be read.
engine -- The engine the source will be associated with.
"""
from enthought.tvtk.api import tvtk
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
# Do your own reader stuff here, I'm just reading a VTK file with a
# different extension here.
r = tvtk.StructuredPointsReader(file_name=fname)
r.update()
src = VTKDataSource(data=r.output)
return src
def _plotScene(self):
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.filters.extract_vector_norm import ExtractVectorNorm
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.axes import Axes
from enthought.mayavi.modules.surface import Surface
from enthought.tvtk.api import tvtk
script = self.script
script.new_scene()
w = script.get_active_window()
w.size = self.windowSize
scene = script.engine.current_scene.scene
scene.disable_render = True
scene.background = self.colorBg
scene.foreground = self.colorFg
t = 0.0
self.dataVtk = self.surfdata.toVtk(t)
script.engine.current_object.name = "Velocity"
script.add_source(VTKDataSource(data=self.dataVtk))
surf = Surface()
surf.actor.property.representation = "wireframe"
script.add_module(surf)
colorbar = script.engine.current_object.module_manager.scalar_lut_manager
colorbar.show_scalar_bar = True
colorbar.scalar_bar.label_format = "%3.1f"
colorbar.use_default_range = False
colorbar.data_range = (-3, 1)
colorbar.number_of_labels = 4
colorbar.data_name = "Velocity (m/s)"
colorbar.lut_mode = "hot"
colorbar.reverse_lut = self.lutReverse
scalar_bar = colorbar.scalar_bar_widget.representation
scalar_bar.position2 = (0.05, 0.33)
scalar_bar.position = (0.05, 0.05)
return
def _mk_rectilinear_grid(self):
""" Creates a RectilinearGrid VTK data set using the factory's
attributes.
"""
rg = tvtk.RectilinearGrid()
x = self.position_x.squeeze()
if x.ndim == 3:
x = x[:, 0, 0]
y = self.position_y.squeeze()
if y.ndim == 3:
y = y[0, :, 0]
z = self.position_z.squeeze()
if z.ndim == 3:
z = z[0, 0, :]
# FIXME: We should check array size here.
rg.dimensions = (x.size, y.size, z.size)
rg.x_coordinates = x
rg.y_coordinates = y
rg.z_coordinates = z
self._vtk_source = rg
self._mayavi_source = VTKDataSource(data=self._vtk_source)
def add_lines(self, points):
np = len(points) - 1
lines = scipy.zeros((np, 2), 'l')
lines[:,0] = scipy.arange(0, np-0.5, 1, 'l')
lines[:,1] = scipy.arange(1, np+0.5, 1, 'l')
pd = tvtk.PolyData(points=points, lines=lines)
d = VTKDataSource()
d.data = pd
self.scene.add_child(d)
filter = tvtk.TubeFilter(number_of_sides=6)
filter.radius = 0.01
f = FilterBase(filter=filter, name='TubeFilter')
d.add_child(f)
s = Surface()
s.actor.mapper.scalar_visibility = False
d.add_child(s)
def run(self):
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.surface import Surface
self._setupScene(showFault=False, showMaterials=False)
mesh = self._readMesh()
script = self.script
script.add_source(VTKDataSource(data=mesh))
script.engine.current_object.name = "Mesh"
surf = Surface()
script.add_module(surf)
surf.actor.property.color = (0, 1, 0)
surf = Surface()
script.add_module(surf)
surf.actor.property.representation = 'wireframe'
import vtk_geometry
vtk_geometry.setCamera(script.engine.current_scene.scene.camera)
return
def setUp(self):
"""Initial setting up of test fixture, automatically called by TestCase before any other test method is invoked"""
e = NullEngine()
# Uncomment to see visualization for debugging etc.
#e = Engine()
e.start()
e.new_scene()
self.e = e
sgrid = datasets.generateStructuredGrid()
src = VTKDataSource(data=sgrid)
e.add_source(src)
# Create an outline for the data.
o = Outline()
e.add_module(o)
# Create three simple grid plane modules.
# First normal to 'x' axis.
gp1 = GridPlane()
e.add_module(gp1)
# Second normal to 'y' axis.
gp2 = GridPlane()
# We'll test how robust things are by setting attributes
gp2.grid_plane.axis = 'y'
gp2.grid_plane.position = 16
e.add_module(gp2)
# Third normal to 'z' axis.
gp3 = GridPlane()
e.add_module(gp3)
gp3.grid_plane.axis = 'z'
gp3.grid_plane.position = 6
for gp in (gp1, gp2, gp3):
gp.actor.property.set(ambient=1.0)
self.scene = e.current_scene
return
def create_source(self):
"""
Create a VTK source from data in a SfePy-supported file.
Notes
-----
All data need to be set here, otherwise time stepping will not
work properly - data added by user later will be thrown away on
time step change.
"""
if self.io is None:
self.read_common(self.filename)
dataset = self.create_dataset()
try:
out = self.io.read_data(self.step)
except ValueError:
out = None
if out is not None:
self.add_data_to_dataset(dataset, out)
if self.mat_id_name is not None:
mat_id = self.mesh.cmesh.cell_groups
if self.single_color:
rm = mat_id.min(), mat_id.max()
mat_id[mat_id > rm[0]] = rm[1]
dm = DatasetManager(dataset=dataset)
dm.add_array(mat_id, self.mat_id_name, 'cell')
src = VTKDataSource(data=dataset)
# src.print_traits()
# debug()
return src
def setUp(self):
# Create dataset with multiple scalars.
arr1 = zeros(27, 'f')
for n in range(27):
arr1[n] = (1 + float(n)) / 10.0
arr2 = (arr1 + 1).astype('d')
arr3 = arr1 + 2.0 * (0.5 - random.random(27))
arr3 = arr3.astype('f')
p = tvtk.ImageData(dimensions=[3, 3, 3],
spacing=[1, 1, 1],
scalar_type='int')
p.point_data.scalars = arr1
p.point_data.scalars.name = 'first'
j2 = p.point_data.add_array(arr2)
p.point_data.get_array(j2).name = 'second'
j3 = p.point_data.add_array(arr3)
p.point_data.get_array(j3).name = 'third'
p.update()
self.img = p
self.first = arr1
self.second = arr2
self.third = arr3
# Setup the mayavi pipeline.
e = NullEngine()
e.start()
e.new_scene()
self.e = e
src = VTKDataSource(data=p)
e.add_source(src)
self.src = src
ipw = ImagePlaneWidget()
e.add_module(ipw)
self.ipw = ipw
def setUp(self):
"""Initial setting up of test fixture, automatically called by TestCase before any other test method is invoked"""
e = NullEngine()
# Uncomment to see visualization for debugging etc.
#e = Engine()
e.start()
e.new_scene()
self.e = e
sgrid = datasets.generateStructuredGrid()
src = VTKDataSource(data=sgrid)
e.add_source(src)
c = Contour()
# `name` is used for the notebook tabs.
n = PolyDataNormals(name='Normals')
o = Optional(filter=n, label_text='Compute normals')
coll = Collection(filters=[c, o], name='IsoSurface')
e.add_filter(coll)
s = Surface()
e.add_module(s)
self.coll = coll
self.scene = e.current_scene
return
def run(self):
from enthought.mayavi.sources.vtk_file_reader import VTKFileReader
#import modules here
from enthought.mayavi.modules import surface, glyph , axes, outline, orientation_axes, scalar_cut_plane
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.tvtk.api import tvtk
#CitcomS filter
from plugins.filter.CitcomSshowCaps import CitcomSshowCaps
from plugins.filter.CitcomSreduce import CitcomSreduce
import re
script = self.script
#DEFINES
orange = (1.0,0.5,0)
################
#Read Meta information
meta = ""
try:
vtk = open(self.filename, "r")
vtk.readline()
meta = vtk.readline()
except IOError:
print 'cannot open file'
try:
print "Reading meta-information"
m = re.search('(?<=NX:)\d+', meta)
nx = int(m.group(0))
print "NX: ", nx
m = re.search('(?<=NY:)\d+', meta)
ny = int(m.group(0))
print "NY: ", ny
m = re.search('(?<=NZ:)\d+', meta)
nz = int(m.group(0))
print "NZ: ", nz
m = re.search('(?<=Radius_Inner:)(\d+|.)+', meta)
print m.group(0)
radius_inner = float(m.group(0))
print "Radius Inner: ", radius_inner
except ValueError:
print "Non-valid meta information in file..."
vtk.close()
################
#Read Vtk file
src_vtkf = VTKFileReader()
src_vtkf.initialize(self.filename)
###########Display Data############
#Create new scene
script.new_scene()
script.add_source(src_vtkf)
scap = CitcomSshowCaps()
script.add_filter(scap)
#Show ScalarCutPlane
scp = scalar_cut_plane.ScalarCutPlane()
script.add_module(scp)
#Add filter for a reduce grid
redu = CitcomSreduce()
script.add_filter(redu)
#Shows Glyph on reduce grid
gly = glyph.Glyph()
gly.glyph.glyph_source.scale = 0.082
gly.glyph.scale_mode = 'scale_by_scalar'
gly.glyph.color_mode = 'color_by_scalar'
script.add_module(gly)
mm = gly.module_manager
mm.scalar_lut_manager.use_default_range = False
mm.scalar_lut_manager.data_range = 0.0, 1.0
################### Create CORE ################################
#Load VTK Data Sets
sphere = tvtk.SphereSource()
sphere.radius = radius_inner
sphere.theta_resolution = 24
sphere.phi_resolution = 24
# Create a mesh from the data created above.
src = VTKDataSource()
src.data = sphere.output
script.add_source(src)
#Show Surface
surf_module = surface.Surface()
surf_module.actor.property.color = orange
script.add_module(surf_module)
def run(self):
from enthought.mayavi.sources.vtk_file_reader import VTKFileReader
#import modules here
from enthought.mayavi.modules import surface, glyph , axes, outline, orientation_axes, scalar_cut_plane
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.tvtk.api import tvtk
#citcomS Filter and Modules
from plugins.CitcomSHDFUgrid import CitcomSHDFUgrid
from plugins.filter.CitcomSshowCaps import CitcomSshowCaps
from plugins.filter.CitcomSreduce import CitcomSreduce
import re
script = self.script
#DEFINES
orange = (1.0,0.5,0)
reduce_factor = 2
#Read Hdf file
src_hdf = CitcomSHDFUgrid()
hexgrid = src_hdf.initialize(self.filename,self.timestep,self.nx_redu,self.ny_redu,self.nz_redu)
radius_inner = src_hdf._radius_inner
data = VTKDataSource()
data.data = hexgrid
###########Display Data############
#Create new scene
script.new_scene()
script.add_source(data)
scap = CitcomSshowCaps()
script.add_filter(scap)
#Show ScalarCutPlane
scp = scalar_cut_plane.ScalarCutPlane()
script.add_module(scp)
#Add filter for a reduce grid
redu = CitcomSreduce()
#redu.setvalues(nx,ny,nz)
script.add_filter(redu)
gly = glyph.Glyph()
gly.glyph.glyph_source.scale = 0.082
gly.glyph.scale_mode = 'scale_by_scalar'
gly.glyph.color_mode = 'color_by_scalar'
script.add_module(gly)
mm = gly.module_manager
mm.scalar_lut_manager.use_default_range = False
mm.scalar_lut_manager.data_range = 0.0, 1.0
################### Create CORE ################################
#Load VTK Data Sets
sphere = tvtk.SphereSource()
sphere.radius = radius_inner
sphere.theta_resolution = 24
sphere.phi_resolution = 24
# Create a mesh from the data created above.
src = VTKDataSource()
src.data = sphere.output
script.add_source(src)
#Show Surface
surf_module = surface.Surface()
surf_module.actor.property.color = orange
script.add_module(surf_module)
# e.add_module(a) # STATIONS #d=VTKDataSource() #d.data=pd #e.add_source(d) #g=Glyph() #e.add_module(g) #g.glyph.glyph_source.glyph_source=g.glyph.glyph_source.glyph_list[4] #g.glyph.glyph_source.glyph_source.radius=0.1 # DEM d=VTKDataSource() d.data=dem_data e.add_source(d) df=Delaunay2D() e.add_filter(df) s=Surface() e.add_module(s) #s.actor.property.set(representation='p', point_size=100) #view(azimuth=-60,elevation=60,distance=120) output_file="tmp.png" win.scene.save(output_file,size=(800,600))
def plot_slice_mayavi(dat_filename,output_file,hyp_x,hyp_y,hyp_z,search_grid_file_name,max_stack_value):
base_path=os.getenv('WAVELOC_PATH')
lib_path="%s/lib"%base_path
# grid geometry
hdr_file=lib_path + os.sep + search_grid_file_name
# detection
detection=50
# stations
stations_file="%s/coord_stations_piton"%lib_path
sta=StationList()
sta.read_from_file(stations_file)
# create the object to contain the stations
pd = tvtk.PolyData()
pd.points = [[s.x/1000.0, s.y/1000.0, -s.elev/1000.0] for s in sta.stations.values()]
# create the object to contain the stations
try:
pd_hyp = tvtk.PolyData()
pd_hyp.points=[[hyp_x,hyp_y,hyp_z]]
except TypeError:
pass
# read the dat file
print dat_filename
data=QDGrid()
data.read_NLL_hdr_file(hdr_file)
data.buf=numpy.fromfile(dat_filename, dtype=numpy.int16)
max_ib=numpy.argmax(data.buf)
print max_ib
max_val=data.buf[max_ib]
ix,iy,iz=data.get_ix_iy_iz(max_ib)
#data.buf=numpy.array(data.buf, dtype=numpy.float)
data.buf.shape = (data.nx, data.ny, data.nz)
# 'mayavi' is always defined on the interpreter.
e = OffScreenEngine()
#e = Engine()
e.start()
win = e.new_scene(magnification=1)
e.current_scene.scene.off_screen_rendering = True
win.scene.isometric_view()
# Make the data and add it to the pipeline.
src = ArraySource(transpose_input_array=True)
src.scalar_data = data.buf
src.spacing=(data.dx, data.dy, -data.dz)
src.origin=(data.x_orig, data.y_orig, -data.z_orig)
e.add_source(src)
# Visualize the data.
o = Outline()
e.add_module(o)
lut=e.scenes[0].children[0].children[0].scalar_lut_manager
lut.data_range=[-1,max_stack_value]
lut.show_legend = True
lut.data_name = 'Stack'
# Create one ContourGridPlane normal to the 'x' axis.
cgp = ContourGridPlane()
e.add_module(cgp)
# Set the position to the middle of the data.
if max_val > detection:
cgp.grid_plane.position = ix
else:
cgp.grid_plane.position = data.nx/2
cgp.contour.filled_contours = True
cgp.actor.property.opacity = 0.6
output=cgp.grid_plane.outputs[0]
x_data=numpy.array(output.point_data.scalars.to_array())
# Another with filled contours normal to 'y' axis.
cgp = ContourGridPlane()
e.add_module(cgp)
# Set the axis and position to the middle of the data.
cgp.grid_plane.axis = 'y'
if max_val > detection:
cgp.grid_plane.position = iy
else:
cgp.grid_plane.position = data.ny/2
cgp.contour.filled_contours = True
cgp.actor.property.opacity = 0.6
output=cgp.grid_plane.outputs[0]
y_data=numpy.array(output.point_data.scalars.to_array())
# Another with filled contours normal to 'z' axis.
cgp = ContourGridPlane()
e.add_module(cgp)
# Set the axis and position to the middle of the data.
cgp.grid_plane.axis = 'z'
if max_val > detection:
cgp.grid_plane.position = iz
else:
cgp.grid_plane.position = data.nz/2
cgp.contour.filled_contours = True
cgp.actor.property.opacity = 0.6
output=cgp.grid_plane.outputs[0]
z_data=numpy.array(output.point_data.scalars.to_array())
a=Axes()
e.add_module(a)
d=VTKDataSource()
d.data=pd
e.add_source(d)
g=Glyph()
e.add_module(g)
g.glyph.glyph_source.glyph_source=g.glyph.glyph_source.glyph_list[4]
g.glyph.glyph_source.glyph_source.radius=0.1
d=VTKDataSource()
d.data=pd_hyp
e.add_source(d)
g=Glyph()
e.add_module(g)
g.glyph.glyph_source.glyph_source=g.glyph.glyph_source.glyph_list[4]
g.glyph.glyph_source.glyph_source.radius=0.5
g.actor.property.color=(0.0,0.0,0.0)
#view(azimuth=-60,elevation=60,distance=120)
win.scene.save(output_file,size=(800,800))
e.stop()
del win
del e
return (x_data, y_data, z_data)
def do(self):
############################################################
# Imports.
script = self.script
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
from enthought.mayavi.modules.api import ImagePlaneWidget
# Create dataset with multiple scalars.
arr1 = zeros(27, 'f')
for n in range(27):
arr1[n] = (1+float(n))/10.0
arr2 = (arr1 + 1).astype('d')
arr3 = arr1 + 2.0*(0.5 - random.random(27))
arr3 = arr3.astype('f')
p = tvtk.ImageData(dimensions=[3,3,3],spacing=[1,1,1],
scalar_type='int')
p.point_data.scalars = arr1
p.point_data.scalars.name = 'first'
j2 = p.point_data.add_array(arr2)
p.point_data.get_array(j2).name='second'
j3 = p.point_data.add_array(arr3)
p.point_data.get_array(j3).name='third'
p.update()
# Make the pipeline.
self.new_scene()
src = VTKDataSource(data=p)
script.add_source(src)
ipw = ImagePlaneWidget()
script.add_module(ipw)
# Test.
ipw = ipw.ipw
scalars = ipw.input.point_data.scalars
r = scalars.range
expect = min(arr1), max(arr1)
assert r == expect
o = src.outputs[0]
o.update_traits()
st = ipw.input.scalar_type
assert scalars.data_type == 10
assert st == 'float'
src.point_scalars_name = 'second'
scalars = ipw.input.point_data.scalars
r = scalars.range
expect = min(arr2), max(arr2)
assert r == expect
o.update_traits()
st = ipw.input.scalar_type
assert scalars.data_type == 11
assert st == 'double'
src.point_scalars_name = 'third'
scalars = ipw.input.point_data.scalars
r = scalars.range
expect = min(arr3), max(arr3)
assert r == expect
o.update_traits()
st = ipw.input.scalar_type
assert scalars.data_type == 10
assert st == 'float'
# is a script that create a !SurfRegular object using mlab, and then loads
# it in !MayaVi2. A more detailed version of this script is given in the
# examples pages [:Cookbook/MayaVi/Examples].
#
# <codecell>
import numpy
def f(x, y):
return numpy.sin(x*y)/(x*y)
x = numpy.arange(-7., 7.05, 0.1)
y = numpy.arange(-5., 5.05, 0.05)
from enthought.tvtk.tools import mlab
s = mlab.SurfRegular(x, y, f)
from enthought.mayavi.sources.vtk_data_source import VTKDataSource
d = VTKDataSource()
d.data = s.data
mayavi.add_source(d)
from enthought.mayavi.filters.warp_scalar import WarpScalar
w = WarpScalar()
mayavi.add_filter(w)
from enthought.mayavi.modules.outline import Outline
from enthought.mayavi.modules.surface import Surface
o = Outline()
s = Surface()
mayavi.add_module(o)
mayavi.add_module(s)
# <markdowncell>
# You can run this script by running "mayavi2 -n -x script.py", loading it
