#! /usr/bin/python2
# -*- coding: utf-8; -*-
#
# (c) 2013 booya (http://booya.at)
#
# This file is part of the OpenGlider project.
#
# OpenGlider is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# OpenGlider is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OpenGlider. If not, see <http://www.gnu.org/licenses/>.
from openglider.glider.cells import Cell
from openglider.glider.ribs import Rib
__author__ = 'simon'
import ezodf2 as ezodf
from openglider.glider.ballooning import BallooningBezier
from openglider.airfoil import Profile2D
#from openglider.glider import Glider
import numpy
[docs]def import_ods(filename, glider=None):
ods = ezodf.opendoc(filename)
sheets = ods.sheets
# Profiles -> map xvalues
profiles = [Profile2D(profile) for profile in transpose_columns(sheets[3])]
xvalues = sorted(profiles, key=lambda prof: prof.numpoints)[0].x_values # Use airfoil with maximum profilepoints
for profile in profiles:
profile.x_values = xvalues
# Ballooning old : 1-8 > upper (prepend/append (0,0),(1,0)), 9-16 > lower (same + * (1,-1))
balloonings_temp = transpose_columns(sheets[4])
balloonings = []
for baloon in balloonings_temp:
upper = [[0, 0]] + baloon[:7] + [[1, 0]]
lower = [[0, 0]] + [[i[0], -1 * i[1]] for i in baloon[8:15]] + [[1, 0]]
balloonings.append(BallooningBezier([upper, lower]))
# Data
data = {}
datasheet = sheets[-1]
assert isinstance(datasheet, ezodf.Sheet)
for i in range(datasheet.nrows()):
data[datasheet.get_cell([i, 0]).value] = datasheet.get_cell([i, 1]).value
#print(data["GLEITZAHL"])
glider.data = data
cells = []
main = sheets[0]
x = y = z = span_last = 0.
alpha2 = 0.
thisrib = None
# TODO: Glide -> DATAIMPORT
for i in range(1, main.nrows()):
line = [main.get_cell([i, j]).value for j in range(main.ncols())]
if not line[0]:
#print("leere zeile:", i, main.nrows())
break
chord = line[1] # Rib-Chord
span = line[2] # spanwise-length (flat)
alpha1 = alpha2 # angle before the rib
alpha2 += line[4] * numpy.pi / 180 # angle after the rib
alpha = (span > 0) * (alpha1 + alpha2) * 0.5 + line[6] * numpy.pi / 180 # rib's angle
x = line[3] # x-value -> front/back (ribwise)
y += numpy.cos(alpha1) * (span - span_last) # y-value -> spanwise
z -= numpy.sin(alpha1) * (span - span_last) # z-axis -> up/down
aoa = line[5] * numpy.pi / 180
zrot = line[7] * numpy.pi / 180
span_last = span
profile = merge(line[8], profiles)
ballooning = merge(line[9], balloonings)
lastrib = thisrib
thisrib = Rib(profile, ballooning, numpy.array([x, y, z]), chord, alpha, aoa, zrot, data["GLEITZAHL"])
if i == 1 and y != 0: # Middle-cell
#print("midrib!", y)
lastrib = thisrib.copy()
lastrib.mirror()
if lastrib:
cell = Cell(lastrib, thisrib, [])
cell.name = "Cell_no"+str(i)
cells.append(cell)
if glider:
glider.cells = cells
glider.close_rib()
return
return cells
[docs]def transpose_columns(sheet=ezodf.Table(), columnswidth=2):
num = sheet.ncols()
#if num % columnswidth > 0:
# raise ValueError("irregular columnswidth")
result = []
for col in range(num / columnswidth):
columns = range(col * columnswidth, (col + 1) * columnswidth)
element = []
i = 0
while i < sheet.nrows():
row = [sheet.get_cell([i, j]).value for j in columns]
if sum([j is None for j in row]) == len(row): # Break at empty line
break
i += 1
element.append(row)
result.append(element)
return result
[docs]def merge(factor, container):
k = factor % 1
i = int(factor - k)
first = container[i]
if k > 0:
second = container[i + 1]
return first * (1 - k) + second * k
return first