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Merge pull request #1034 from StongeEtienne/viz_surfaces
Viz surfaces
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*.c | ||
*.cpp | ||
*.png | ||
*.vtk | ||
*.gz | ||
*.dpy | ||
*.npy | ||
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from __future__ import division, print_function, absolute_import | ||
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from dipy.viz.utils import set_input | ||
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# Conditional import machinery for vtk | ||
from dipy.utils.optpkg import optional_package | ||
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# Allow import, but disable doctests if we don't have vtk | ||
vtk, have_vtk, setup_module = optional_package('vtk') | ||
colors, have_vtk_colors, _ = optional_package('vtk.util.colors') | ||
ns, have_numpy_support, _ = optional_package('vtk.util.numpy_support') | ||
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if have_vtk: | ||
version = vtk.vtkVersion.GetVTKSourceVersion().split(' ')[-1] | ||
major_version = vtk.vtkVersion.GetVTKMajorVersion() | ||
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# Input functions (load) | ||
def load_polydata(file_name): | ||
""" Load a vtk polydata to a supported format file | ||
Parameters | ||
---------- | ||
file_name : string | ||
Returns | ||
------- | ||
output : vtkPolyData | ||
""" | ||
# get file extension (type) lower case | ||
file_extension = file_name.split(".")[-1].lower() | ||
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if file_extension == "vtk": | ||
reader = vtk.vtkPolyDataReader() | ||
elif file_extension == "fib": | ||
reader = vtk.vtkPolyDataReader() | ||
elif file_extension == "ply": | ||
reader = vtk.vtkPLYReader() | ||
elif file_extension == "stl": | ||
reader = vtk.vtkSTLReader() | ||
elif file_extension == "xml": | ||
reader = vtk.vtkXMLPolyDataReader() | ||
elif file_extension == "obj": | ||
try: # try to read as a normal obj | ||
reader = vtk.vtkOBJReader() | ||
except: # than try load a MNI obj format | ||
reader = vtk.vtkMNIObjectReader() | ||
else: | ||
raise "polydata " + file_extension + " is not suported" | ||
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reader.SetFileName(file_name) | ||
reader.Update() | ||
# print(file_name + " Mesh " + file_extension + " Loaded") | ||
return reader.GetOutput() | ||
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# Output functions (save) | ||
def save_polydata(polydata, file_name, binary=False, color_array_name=None): | ||
""" Save a vtk polydata to a supported format file | ||
Parameters | ||
---------- | ||
polydata : vtkPolyData | ||
file_name : string | ||
""" | ||
# get file extension (type) | ||
file_extension = file_name.split(".")[-1].lower() | ||
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if file_extension == "vtk": | ||
writer = vtk.vtkPolyDataWriter() | ||
elif file_extension == "fib": | ||
writer = vtk.vtkPolyDataWriter() | ||
elif file_extension == "ply": | ||
writer = vtk.vtkPLYWriter() | ||
elif file_extension == "stl": | ||
writer = vtk.vtkSTLWriter() | ||
elif file_extension == "xml": | ||
writer = vtk.vtkXMLPolyDataWriter() | ||
elif file_extension == "obj": | ||
raise "mni obj or Wavefront obj ?" | ||
# writer = set_input(vtk.vtkMNIObjectWriter(), polydata) | ||
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writer.SetFileName(file_name) | ||
writer = set_input(writer, polydata) | ||
if color_array_name is not None: | ||
writer.SetArrayName(color_array_name) | ||
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if binary: | ||
writer.SetFileTypeToBinary() | ||
writer.Update() | ||
writer.Write() |
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