mightyscape-1.2/extensions/fablabchemnitz/remove_duplicate_guides/remove_duplicate_guides.py

130 lines
3.8 KiB
Python

#!/usr/bin/env python3
# Copyright 2016 Luke Phillips (lukerazor@hotmail.com)
# 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 2 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, write to the Free Software
#Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Extension dirs
# linux:~/.config/inkscape/extensions
# windows: [Drive]:\Program Files\Inkscape\share\extensions
import inkex
import math
inkex.NSS[u'cs'] = u'http://www.razorfoss.org/tuckboxextension/'
def printDebug(string):
inkex.utils.debug( _(str(string)) )
def isAlmost0(num):
return (abs(num) < 0.000001)
def formatFloat(f):
if f == None:
return "None"
return "{:.3f}".format(f)
class Point():
def __init__(self, x, y):
self.x = x
self.y = y
def rotate(self, angle, origin):
"""
Rotate a point counterclockwise by a given angle around a given origin.
The angle should be given in degrees.
"""
rads = math.radians(angle)
newX = origin.x + math.cos(rads) * (self.x - origin.x) - math.sin(rads) * (self.y - origin.y)
newY = origin.y + math.sin(rads) * (self.x - origin.x) + math.cos(rads) * (self.y - origin.y)
return Point(newX, newY)
def add(self, point):
return Point(self.x + point.x, self.y + point.y)
@staticmethod
def parsePoint(pointString):
x, y = map(lambda v: float(v), pointString.split(","))
return Point(x, y)
@staticmethod
def parse(pointString, orientationString=None):
p1 = Point.parsePoint(pointString)
p = Point(p1.x, p1.y)
if orientationString != None:
po = Point.parsePoint(orientationString)
p = p1.add(po.rotate(270, Point(0, 0)))
return p
class GuideDefiniton():
def __init__(self, xmlNode):
self.node = xmlNode
self.id = self.node.attrib["id"]
self.p1 = Point.parse(self.node.attrib["position"])
self.p2 = Point.parse(self.node.attrib["position"], self.node.attrib["orientation"])
# calculate the slope and y intercept
self.slope = None # default to vertical line
self.yIntercept = None
self.xIntercept = self.p1.x
if not isAlmost0(self.p1.x - self.p2.x): # not vertical
self.slope = (self.p2.y - self.p1.y)/(self.p2.x - self.p1.x)
self.yIntercept = self.p1.y - (self.slope*self.p1.x)
if not isAlmost0(self.slope): # horizontal
self.xIntercept = -(self.yIntercept)/self.slope
else:
self.slope=0
self.xIntercept = None
#printDebug(self.toString())
def interceptSerial(self):
s = "{},{}".format(formatFloat(self.xIntercept), formatFloat(self.yIntercept))
return s
def toString(self):
#return "{} - p1:({}, {}) p2:({}, {}) - {}, {}, {}".format(self.id, self.p1.x, self.p1.y, self.p2.x, self.p2.y, self.slope, self.xIntercept, self.yIntercept)
return "{} - {}".format(self.id, self.interceptSerial())
class RemoveDuplicateGuides(inkex.EffectExtension):
def effect(self):
# enumerate all guides
guideNodes = list(map(lambda n: GuideDefiniton(n), self.document.xpath('//sodipodi:guide',namespaces=inkex.NSS)))
# sort guides into match xy intercept groups
groups = {}
for guide in guideNodes:
serial = guide.interceptSerial()
if serial not in groups:
groups[serial] = []
groups[serial].append(guide)
# now remove all the excess guides
for serial in groups:
for guide in groups[serial][1:]: # keep the first member of group
guide.node.delete()
if __name__ == '__main__':
effect = RemoveDuplicateGuides().run()