#!BPY

"""
Name: 'Airfoil data...'
Blender: 241
Group: 'Import'
Tooltip: 'Import airfoil data in selig file format (*.dat), http://www.aae.uiuc.edu/m-selig/ads/coord_database.html'
"""

__author__ = "Wim Van Hoydonck"
__version__ = "0.1"
__bpydoc__ = """\
This script imports airfoil coordinate files into Blender.

Airfoil databases can be found here:
	http://www.aae.uiuc.edu/m-selig/ads/coord_database.html
and here:
	http://mitglied.lycos.de/frankranis/

Usage:

Run the script from "File->Import" and select the desired DAT file
"""

#######################################################################
#                                                                     #
# import airfoil coordinate-files (*.dat)                             #
# as found on http://www.aae.uiuc.edu/m-selig/ads/coord_database.html #
#         and http://mitglied.lycos.de/frankranis/                    #
#                                                                     #
# (C) 2006 Wim Van Hoydonck                                           #
# email: wim.van.hoydonck@nospam.gmail.nospam.com                     #
#                                                                     #
# Released under the GNU GPL v2.0                                     #
#                                                                     #
# Take a look overhere:                                               #
#   http://www.aai.uiuc.edu/m-selig/ads/aircraft.html                 #
#                                                                     #
# NOTE:                                                               #
#   Some files at http://www.aae.uiuc.edu/m-selig/ contain            #
#   irregularities, check the terminal for more info if the airfoil   #
#   seems to be missing some vertices.                                #
#                                                                     #
#######################################################################

import Blender
from Blender import Mesh, Mathutils, Object, Scene

from math import fmod
import string, sys

def read(filename):

	file = open(filename, "rb")

	lines = file.readlines()
	length = len(lines)-1

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

	print ""
	print "importing", objname

	
	# irregularities
	irreg = 0
	zfirst = -10.0
	# initiate coordinate lists
	coo_list = []
	
	for i in range(1,length+1):
		line = lines[i]
		# strip line from too many whitespaces
		# split line in two
		# make strings float
		try:
			x, z = map(float, string.split(string.strip(line)))
			y = 0
			coo_list.append([x,y,z])

		except ValueError:
			print "Line", i+1, "contains irregularities, check the file"
			irreg +=1


	# create new mesh with the coordinate list
	new_mesh(coo_list,objname)


def new_mesh(coo_list,objname):

	# the new mesh and object	
	m = Mesh.New()
	obj = Object.New('Mesh')
	
	
	# add vertices to mesh
	for i in range(0,len(coo_list)):
		m.verts.extend(Mathutils.Vector(coo_list[i]))

	# construct edges with the verts
	for i in range(0,len(m.verts)):
		m.edges.extend(m.verts[i],m.verts[int(fmod(i+1,len(m.verts)))])
	
	# give it some names
	m.name = objname
	obj.name = objname
	
	# link object to mesh
	obj.link(m)
	
	
	# get current scene and link object to this scene
	scene1 = Scene.GetCurrent()
	scene1.link(obj)
	Blender.Redraw()
		
def fs_callback(filename):
	read(filename)

Blender.Window.FileSelector(fs_callback, "airfoil coordinate import")