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slp_import.py

#!BPY

"""
Name: 'Pro Engineer (.slp)...'
Blender: 232
Group: 'Import'
Tooltip: 'Import Pro Engineer (.slp) File Format'
"""

__author__ = "Anthony D'Agostino (Scorpius)"
__url__ = ("blender", "elysiun",
"Author's homepage, http://www.redrival.com/scorpius")
__version__ = "Part of IOSuite 0.5"

__bpydoc__ = """\
This script imports Pro Engineer files to Blender.

This format can be exported from Pro/Engineer and most other CAD
applications. Written at the request of a Blender user. It is almost
identical to RAW format.

Usage:<br>
      Execute this script from the "File->Import" menu and choose an SLP file to
open.

Notes:<br>
      Generates the standard verts and faces lists, but without duplicate
verts. Only *exact* duplicates are removed, there is no way to specify a
tolerance.
"""

# $Id: slp_import.py,v 1.5 2004/11/30 02:27:46 ianwill Exp $
#
# +---------------------------------------------------------+
# | Copyright (c) 2004 Anthony D'Agostino                   |
# | http://www.redrival.com/scorpius                        |
# | scorpius@netzero.com                                    |
# | May 3, 2004                                             |
# | Released under the Blender Artistic Licence (BAL)       |
# | Import Export Suite v0.5                                |
# +---------------------------------------------------------+
# | Read and write SLP Triangle File Format (*.slp)         |
# +---------------------------------------------------------+

import Blender, mod_meshtools
#import time

# ================================
# === Read SLP Triangle Format ===
# ================================
def read(filename):
      #start = time.clock()
      file = open(filename, "rb")

      raw = []
      for line in file.readlines():
            data = line.split()
            if data[0] == "vertex":
                  vert = map(float, data[1:])
                  raw.append(vert)

      tri = []
      for i in range(0, len(raw), 3):
            tri.append(raw[i] + raw[i+1] + raw[i+2])

      #$import pprint; pprint.pprint(tri)

      # Collect data from RAW format
      faces = []
      for line in tri:
            f1, f2, f3, f4, f5, f6, f7, f8, f9 = line
            faces.append([(f1, f2, f3), (f4, f5, f6), (f7, f8, f9)])

      # Generate verts and faces lists, without duplicates
      verts = []
      coords = {}
      index = 0
      for i in range(len(faces)):
            for j in range(len(faces[i])):
                  vertex = faces[i][j]
                  if not coords.has_key(vertex):
                        coords[vertex] = index
                        index += 1
                        verts.append(vertex)
                  faces[i][j] = coords[vertex]

      objname = Blender.sys.splitext(Blender.sys.basename(filename))[0]

      mod_meshtools.create_mesh(verts, faces, objname)
      Blender.Window.DrawProgressBar(1.0, '')  # clear progressbar
      file.close()
      #end = time.clock()
      #seconds = " in %.2f %s" % (end-start, "seconds")
      message = "Successfully imported " + Blender.sys.basename(filename)# + seconds
      mod_meshtools.print_boxed(message)

def fs_callback(filename):
      read(filename)

Blender.Window.FileSelector(fs_callback, "Import SLP")

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