####################################################################################################
#
# PyValentina - A Python implementation of Valentina Pattern Drafting Software
# Copyright (C) 2017 Fabrice Salvaire
#
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
####################################################################################################
####################################################################################################
from math import sqrt
####################################################################################################
[docs]class PaperSize:
##############################################
def __init__(self, size_name, orientation, margin):
self._size_name = size_name
if orientation not in ('portrait', 'landscape'):
raise ValueError
self._orientation = orientation
self._margin = margin
# ISO 216 / ISO 269
# A0 841 × 1189 -> 594 × 841
# B0 1000 × 1414 -> 707 × 1000
# C0 917 × 1297 -> 648 × 917
letter_to_dimension = {
'a': 1189,
'b': 1414,
'c': 1297
}
size_name = size_name.lower()
letter = size_name[0]
level = int(size_name[1:])
if letter in ('a', 'b', 'c'):
if level < 0 or level > 10:
raise ValueError
scale = sqrt(2)**level
height = letter_to_dimension[letter] / scale
width = height / sqrt(2)
if orientation == 'landscape':
height, width = width, height
self._height = height
self._width = width
##############################################
@property
def size_name(self):
return self._size_name
@property
def orientation(self):
return self._orientation
@property
def height(self):
return self._height
@property
def width(self):
return self._width
@property
def margin(self):
return self._margin