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trimesh2.py
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# VisTrails package for trimesh2 support
# Copyright Carlos Eduardo Scheidegger, 2007
# Get trimesh2 at www.cs.princeton.edu/gfx/proj/trimesh2/
# or a patched version with more available file formats
# at www.sci.utah.edu/~cscheid/software
# License: GPLv2 or later
# ChangeLog:
# 2007-03-13 Carlos Scheidegger <cscheid@juggernaut>
# * uses core.system.list2cmd to generate command lines.
# 2007-03-12 Carlos Scheidegger <cscheid@juggernaut>
# * First release
##############################################################################
import core.modules
import core.modules.module_registry
from core.modules.vistrails_module import Module, ModuleError
from core.system import list2cmdline
import os
_mesh_filter_path = None
identifier = 'edu.utah.sci.cscheid.trimesh2'
version = '0.1'
name = 'trimesh2'
##############################################################################
# MeshFilter
class MeshFilter(Module):
def guess_input_format(self, input_file_name):
i = input_file_name.rfind('.')
if i == -1:
return None
else:
return input_file_name[i:]
def compute(self):
self.check_input('input_file')
input_file = self.get_input('input_file')
if self.has_input('output_format'):
output_suffix = self.get_input('output_format')
else:
output_suffix = self.guess_input_format(input_file.name)
if not output_suffix:
output_suffix = '.off'
output_file = self.interpreter.filePool.create_file(suffix=output_suffix)
values = [_mesh_filter_path,
input_file.name,
output_file.name]
cmdline = list2cmdline(values)
print cmdline
result = os.system(cmdline)
if result != 0:
raise ModuleError(self, 'Execution failed')
self.set_output('output_file', output_file)
##############################################################################
# PlanarSubdiv
class PlanarSubdiv(MeshFilter):
def compute(self):
self.check_input('input_file')
self.check_input('iterations')
iters = self.get_input('iterations')
if iters < 1:
raise ModuleError(self, 'iterations must be >=1')
input_file = self.get_input('input_file')
if self.has_input('output_format'):
output_suffix = self.get_input('output_format')
else:
output_suffix = self.guess_input_format(input_file.name)
if not output_suffix:
output_suffix = '.off'
output_file = self.interpreter.filePool.create_file(suffix=output_suffix)
values = [_mesh_filter_path,
input_file.name,
'-subdiv',
output_file.name]
cmdline = list2cmdline(values)
print cmdline
result = os.system(cmdline)
if result != 0:
raise ModuleError(self, 'Execution failed')
for i in xrange(iters-1):
cmdline = '%s %s -subdiv %s' % (_mesh_filter_path,
output_file.name,
output_file.name)
print cmdline
result = os.system(cmdline)
if result != 0:
raise ModuleError(self, 'Execution failed')
self.set_output('output_file', output_file)
def initialize(executable_path=None):
global _mesh_filter_path
if not executable_path:
print "Assuming mesh_filter is in path"
_mesh_filter_path = 'mesh_filter'
else:
print "Assuming mesh_filter is in '%s'" % executable_path
_mesh_filter_path = executable_path + '/mesh_filter'
reg = core.modules.module_registry
reg.add_module(MeshFilter)
reg.add_input_port(MeshFilter, 'input_file',
core.modules.basic_modules.File)
reg.add_input_port(MeshFilter, 'output_format',
core.modules.basic_modules.String)
reg.add_output_port(MeshFilter, 'output_file',
core.modules.basic_modules.File)
reg.add_module(PlanarSubdiv)
reg.add_input_port(PlanarSubdiv, 'iterations',
core.modules.basic_modules.Integer)