457 lines
16 KiB
Python
457 lines
16 KiB
Python
#!/usr/bin/env python3
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# Copyright 2016 Luke Phillips (lukerazor@hotmail.com)
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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#along with this program; if not, write to the Free Software
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#Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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from lxml import etree
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import inkex
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import copy
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import math
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FOLD_GAP = 5
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CROP_GAP = 2
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CROP_LENGTH = 3
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inkex.NSS[u'cs'] = u'http://www.razorfoss.org/tuckboxextension/'
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def PrintDebug(string):
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inkex.utils.debug( _(str(string)) )
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def RoundAndDeduplicatePoints(points):
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return sorted(list(set(map(lambda x: round(x, 3), points))))
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class Point():
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def __init__(self, x, y):
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self.x = x
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self.y = y
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def rotate(self, angle, origin):
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"""
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Rotate a point counterclockwise by a given angle around a given origin.
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The angle should be given in degrees.
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"""
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rads = math.radians(angle)
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newX = origin.x + math.cos(rads) * (self.x - origin.x) - math.sin(rads) * (self.y - origin.y)
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newY = origin.y + math.sin(rads) * (self.x - origin.x) + math.cos(rads) * (self.y - origin.y)
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return Point(newX, newY)
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def add(self, point):
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return Point(self.x + point.x, self.y + point.y)
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@staticmethod
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def parsePoint(pointString):
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x, y = map(lambda v: float(v), pointString.split(","))
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return Point(x, y)
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@staticmethod
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def parse(pointString, orientationString=None):
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p1 = Point.parsePoint(pointString)
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p = Point(p1.x, p1.y)
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if orientationString != None:
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po = Point.parsePoint(orientationString)
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p = p1.add(po.rotate(270, Point(0, 0)))
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return p
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class HexGeneratorBase(object):
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def __init__(self, hexDiameter, hexMargin, bleedMargin, pageWidth, pageHeight, pageMargin, unitConverterFunc):
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self.UnitConverterFunc = unitConverterFunc
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self.HexDiameter = hexDiameter
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self.HexMargin = hexMargin
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self.BleedMargin = bleedMargin
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self.PageWidth = pageWidth
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self.PageHeight = pageHeight
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self.PageMargin = pageMargin
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self.ContainerWidth = -1
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self.ContainerHeight = -1
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def CalcPageLeftMargin(self):
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return (self.PageWidth - self.ContentWidth) / 2.0
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def CalcPageBottomMargin(self):
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return (self.PageHeight - self.ContentHeight) / 2.0
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def DrawGuide(self, xmlParent, xpos, ypos):
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posString = "{},{}".format(xpos, ypos)
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attribs = {'position': posString, 'orientation': posString}
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etree.SubElement(xmlParent, inkex.addNS('guide',"sodipodi"), attribs)
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def DrawAngledGuide(self, xmlParent, xpos, ypos, angle):
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# Angles are taken from the horizontal axis, positive angles move clockwise
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posString = "{},{}".format(xpos, ypos)
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orientationString = "{}, {}".format(math.sin(math.radians(angle)), math.cos(math.radians(angle)))
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attribs = {'position': posString, 'orientation': orientationString}
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etree.SubElement(xmlParent, inkex.addNS('guide',"sodipodi"), attribs)
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def ConvertPoint(self, p):
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# convert point into svg approriate values, including catering for inkscapes "alternative" axis sytem ie 0, 0 is bottom left not top left
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newX = self.UnitConverterFunc("{}mm".format(p.x))
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newY = self.PageHeight - self.UnitConverterFunc("{}mm".format(p.y))
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return Point(newX, newY)
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def DrawLine(self, xmlParent, p1, p2):
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cp1 = self.ConvertPoint(p1)
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cp2 = self.ConvertPoint(p2)
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pathStr = "M {},{} {}, {}".format(cp1.x, cp1.y, cp2.x, cp2.y)
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style = {'stroke': '#000000', 'stroke-width': self.UnitConverterFunc('0.25mm'), 'fill': 'none'}
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attribs = {'style': str(inkex.Style(style)), 'd': pathStr}
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etree.SubElement(xmlParent, inkex.addNS('path','svg'), attribs )
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def DrawVerticleGuides(self, xmlParent, positions, gap):
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curPos = self.CalcPageLeftMargin()
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lastPos = -1
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while curPos + self.ContainerWidth <= self.PageWidth - self.PageMargin:
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for offset in positions:
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curPos += offset
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if curPos != lastPos: # don't double draw
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self.DrawGuide(xmlParent, curPos, 0)
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lastPos = curPos
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curPos += gap
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def DrawHorizontalGuides(self, xmlParent, positions, gap):
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curPos = self.CalcPageBottomMargin()
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lastPos = -1
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while curPos + self.ContainerHeight <= self.PageHeight - self.PageMargin:
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for offset in positions:
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curPos += offset
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if curPos != lastPos: # don't double draw
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self.DrawGuide(xmlParent, 0, curPos)
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lastPos = curPos
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curPos += gap
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def DrawAngledGuides(self, xmlParent, offsetPositions, angle, gap):
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numExtraTopContainers = 0
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numExtraBottomContainers = 0
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if angle > 0:
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numExtraTopContainers = math.ceil(self.NumContainersAcross / 2.0) - 1
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if angle < 0:
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numExtraBottomContainers = math.ceil(self.NumContainersAcross / 2.0) - 1
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# draw sets of guides per point avoiding duplicate lines
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# NOTE: Effectivly we draw the bottom guides first and then move up (ie y is increasing)
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curPos = self.CalcPageBottomMargin() - numExtraBottomContainers * self.ContainerHeight
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lastPos = -1
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while curPos + self.ContainerHeight <= self.PageHeight - self.PageMargin + numExtraTopContainers*self.ContainerHeight:
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for offset in offsetPositions:
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curPos += offset
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if curPos != lastPos: # don't double draw
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self.DrawAngledGuide(xmlParent, self.CalcPageLeftMargin() + self.ContainerWidth/2, curPos, angle)
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lastPos = curPos
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curPos += gap
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def GenerateFoldLines(self, xmlParent):
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lines = self.GetFoldLinePositions()
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for line in lines:
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self.DrawLine(xmlParent, line[0], line[1])
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def GenerateCropMarks(self, xmlParent):
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lines = self.GetCropMarkLines()
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for line in lines:
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self.DrawLine(xmlParent, line[0], line[1])
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@staticmethod
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def CalculateBorderVerticalOffset(borderWidth):
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if borderWidth == 0:
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return 0
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return borderWidth / math.sin(math.radians(60))
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@staticmethod
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def CreateHexGenerator(hexDiameter, hexMargin, bleedMargin, pageWidth, pageHeight, pageMargin, unitConverterFunc):
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return SimpleHexGridLineGenerator(hexDiameter, hexMargin, bleedMargin, pageWidth, pageHeight, pageMargin, unitConverterFunc)
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class SimpleHexGridLineGenerator(HexGeneratorBase):
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def __init__(self, hexDiameter, hexMargin, bleedMargin, pageWidth, pageHeight, pageMargin, unitConverterFunc):
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super(SimpleHexGridLineGenerator, self).__init__(hexDiameter, hexMargin, bleedMargin, pageWidth, pageHeight, pageMargin, unitConverterFunc)
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self.HexWidth = math.sqrt(3) * (hexDiameter/2)
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self.ContainerWidth = self.HexWidth + 2*bleedMargin
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self.ContainerHeight = hexDiameter + 2*HexGeneratorBase.CalculateBorderVerticalOffset(bleedMargin)
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# num across
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# num down
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self.NumContainersAcross = int((self.PageWidth - 2*self.PageMargin) // self.ContainerWidth) # round down division
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self.NumContainersDown = int((self.PageHeight - 2*self.PageMargin) // self.ContainerHeight) # round down division
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# content sizes
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self.ContentWidth = self.NumContainersAcross * self.ContainerWidth
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self.ContentHeight = self.NumContainersDown * self.ContainerHeight
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def GenerateGuides(self, xmlParent):
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verticalGuideOffsets = [
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0,
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self.BleedMargin,
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self.HexMargin,
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self.HexWidth - 2*self.HexMargin,
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self.HexMargin,
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self.BleedMargin
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]
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bleedVerticalOffset = HexGeneratorBase.CalculateBorderVerticalOffset(self.BleedMargin)
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hexMarginVerticalOffset = HexGeneratorBase.CalculateBorderVerticalOffset(self.HexMargin)
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horizontalGuideOffsets = [
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0,
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bleedVerticalOffset,
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hexMarginVerticalOffset,
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self.HexDiameter - 2*hexMarginVerticalOffset,
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hexMarginVerticalOffset,
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bleedVerticalOffset
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]
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self.DrawVerticleGuides(xmlParent, verticalGuideOffsets, 0)
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self.DrawAngledGuides(xmlParent, horizontalGuideOffsets, -30, 0)
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self.DrawAngledGuides(xmlParent, horizontalGuideOffsets, 30, 0)
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def GetFoldLinePositions(self):
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return [] # no fold lines in simple grid
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def GetCropMarkLines(self):
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lines = []
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leftMargin = self.CalcPageLeftMargin()
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bottomMargin = self.CalcPageBottomMargin()
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bleedVerticalOffset = HexGeneratorBase.CalculateBorderVerticalOffset(self.BleedMargin)
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def CalcOppositeDeltaGivenAdjacentDelta(xdelta, angle):
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return math.tan(math.radians(angle)) * xdelta
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#---------------------------------------------------------------------------------
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#determine all vertical crop marks, duplicates possible
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# figure out the xpos'
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vertical_xpos = []
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for idx in range(self.NumContainersAcross):
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leftX = self.BleedMargin
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rightX = leftX + self.HexWidth
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containerOffset = leftMargin + idx * self.ContainerWidth
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vertical_xpos.append(containerOffset + leftX)
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vertical_xpos.append(containerOffset + rightX)
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vertical_xpos = RoundAndDeduplicatePoints(vertical_xpos)
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# add to list of lines
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vertical_ypos = [bottomMargin - CROP_GAP, self.PageHeight - bottomMargin + CROP_GAP + CROP_LENGTH]
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for xpos in vertical_xpos:
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for ypos in vertical_ypos:
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lines.append([
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Point(xpos, ypos),
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Point(xpos, ypos - CROP_LENGTH)
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])
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#---------------------------------------------------------------------------------
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# figure out NW, SW, NE and SE crop marks for both sides of the page
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vertical_ypos_nw = []
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vertical_ypos_sw = []
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vertical_ypos_ne = []
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vertical_ypos_se = []
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yoffset = CalcOppositeDeltaGivenAdjacentDelta(self.ContainerWidth/2 + CROP_GAP, 30)
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lastColumnHasHalfStep = (self.NumContainersAcross % 2) == 0 # an even numbered containers across means that the last column is 1/2 a continer up and has 1 less container
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staggeredContainerOffset = 0
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if lastColumnHasHalfStep:
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staggeredContainerOffset = self.ContainerHeight/2
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for idx in range(self.NumContainersDown):
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leftContainerOffset = idx * self.ContainerHeight + bottomMargin
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rightContainerOffset = leftContainerOffset + staggeredContainerOffset
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bottomY = bleedVerticalOffset
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topY = self.ContainerHeight - bleedVerticalOffset
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vertical_ypos_nw.append(leftContainerOffset + topY + yoffset)
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vertical_ypos_nw.append(leftContainerOffset + bottomY + yoffset)
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vertical_ypos_sw.append(leftContainerOffset + topY - yoffset)
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vertical_ypos_sw.append(leftContainerOffset + bottomY - yoffset)
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vertical_ypos_ne.append(rightContainerOffset + topY + yoffset)
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vertical_ypos_ne.append(rightContainerOffset + bottomY + yoffset)
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vertical_ypos_se.append(rightContainerOffset + topY - yoffset)
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vertical_ypos_se.append(rightContainerOffset + bottomY - yoffset)
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# sort out a staggered last col
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if lastColumnHasHalfStep: # if it's a half step column we need to remove the last container and add acouple of extra lines
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vertical_ypos_ne = vertical_ypos_ne[:-2]
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vertical_ypos_se = vertical_ypos_se[:-2]
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vertical_ypos_ne.append(max(vertical_ypos_ne) + 2*bleedVerticalOffset)
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vertical_ypos_se.append(min(vertical_ypos_se) - 2*bleedVerticalOffset)
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# remove duplicate positions
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vertical_ypos_nw = RoundAndDeduplicatePoints(vertical_ypos_nw)
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vertical_ypos_sw = RoundAndDeduplicatePoints(vertical_ypos_sw)
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vertical_ypos_ne = RoundAndDeduplicatePoints(vertical_ypos_ne)
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vertical_ypos_se = RoundAndDeduplicatePoints(vertical_ypos_se)
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# add to list of lines
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xpos_left = leftMargin - CROP_GAP
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xpos_right = self.PageWidth - leftMargin + CROP_GAP
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yoffset = CalcOppositeDeltaGivenAdjacentDelta(CROP_LENGTH, 30)
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for ypos in vertical_ypos_nw:
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lines.append([
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Point(xpos_left, ypos),
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Point(xpos_left - CROP_LENGTH, ypos + yoffset)
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])
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for ypos in vertical_ypos_sw:
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lines.append([
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Point(xpos_left, ypos),
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Point(xpos_left - CROP_LENGTH, ypos - yoffset)
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])
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for ypos in vertical_ypos_ne:
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lines.append([
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Point(xpos_right, ypos),
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Point(xpos_right + CROP_LENGTH, ypos + yoffset)
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])
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for ypos in vertical_ypos_se:
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lines.append([
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Point(xpos_right, ypos),
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Point(xpos_right + CROP_LENGTH, ypos - yoffset)
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])
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#---------------------------------------------------------------------------------
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# figure out NW, SW, NE and SE crop marks for top and bottom of the page
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xpos_nw = []
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xpos_sw = []
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xpos_ne = []
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xpos_se = []
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xoffset_near = CalcOppositeDeltaGivenAdjacentDelta(bleedVerticalOffset + CROP_GAP, 60)
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xoffset_far = CalcOppositeDeltaGivenAdjacentDelta(self.ContainerHeight - bleedVerticalOffset + CROP_GAP, 60)
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for idx in range(0, self.NumContainersAcross, 2): #we only need to do every other container because of the stepping
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containerOffset = idx * self.ContainerWidth + leftMargin
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topY = self.ContainerHeight - bleedVerticalOffset
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bottomY = bleedVerticalOffset
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xpos = self.ContainerWidth/2
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xpos_nw.append(containerOffset + xpos - xoffset_near)
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xpos_nw.append(containerOffset + xpos - xoffset_far)
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xpos_sw.append(containerOffset + xpos - xoffset_near)
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xpos_sw.append(containerOffset + xpos - xoffset_far)
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xpos_ne.append(containerOffset + xpos + xoffset_near)
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xpos_ne.append(containerOffset + xpos + xoffset_far)
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xpos_se.append(containerOffset + xpos + xoffset_near)
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xpos_se.append(containerOffset + xpos + xoffset_far)
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# remove duplicate positions
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xpos_nw = RoundAndDeduplicatePoints(xpos_nw)
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xpos_sw = RoundAndDeduplicatePoints(xpos_sw)
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xpos_ne = RoundAndDeduplicatePoints(xpos_ne)
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xpos_se = RoundAndDeduplicatePoints(xpos_se)
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# add to list of lines
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ypos_bottom = bottomMargin - CROP_GAP
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ypos_top = self.PageHeight - bottomMargin + CROP_GAP
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yoffset = CalcOppositeDeltaGivenAdjacentDelta(CROP_LENGTH, 30)
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for xpos in xpos_nw:
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if xpos > 0 and xpos < self.PageWidth:
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lines.append([
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Point(xpos, ypos_top),
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Point(xpos - CROP_LENGTH, ypos_top + yoffset)
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])
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for xpos in xpos_sw:
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if xpos > 0 and xpos < self.PageWidth:
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lines.append([
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Point(xpos, ypos_bottom),
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Point(xpos - CROP_LENGTH, ypos_bottom - yoffset)
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])
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for xpos in xpos_ne:
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if xpos > 0 and xpos < self.PageWidth:
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lines.append([
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Point(xpos, ypos_top),
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Point(xpos + CROP_LENGTH, ypos_top + yoffset)
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])
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for xpos in xpos_se:
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if xpos > 0 and xpos < self.PageWidth:
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lines.append([
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Point(xpos, ypos_bottom),
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Point(xpos + CROP_LENGTH, ypos_bottom - yoffset)
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])
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#---------------------------------------------------------------------------------
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return lines
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class HexTiles(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument('-d', '--hex_diameter', type = float, dest = 'HexDiameter')
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pars.add_argument('-c', '--hex_margin', type = float, dest = 'HexMargin')
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pars.add_argument('-b', '--bleed_margin', type = float, dest = 'BleedMargin')
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pars.add_argument('-p', '--page_margin', type = float, dest = 'PageMargin')
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def effect(self):
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# find dimensions of page
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pageWidth = self.svg.uutounit(self.svg.width, "mm")
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pageHeight = self.svg.uutounit(self.svg.height, "mm")
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opt = self.options
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guideParent = self.document.xpath('//sodipodi:namedview',namespaces=inkex.NSS)[0]
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### GUIDES
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# remove all the existing guides
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[node.delete() for node in self.document.xpath('//sodipodi:guide',namespaces=inkex.NSS)]
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# create the object generator
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gen = HexGeneratorBase.CreateHexGenerator(opt.HexDiameter, opt.HexMargin, opt.BleedMargin, pageWidth, pageHeight, opt.PageMargin, self.svg.unittouu)
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gen.GenerateGuides(guideParent)
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### CROP MARKS
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# remove any existing 'Crop marks' layer
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[node.delete() for node in self.document.xpath("//svg:g[@inkscape:label='Crop Marks']",namespaces=inkex.NSS)]
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svg = self.document.xpath('//svg:svg', namespaces=inkex.NSS)[0]
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layer = etree.SubElement(svg, inkex.addNS('g',"svg"), {})
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layer.set(inkex.addNS('label', 'inkscape'), "Crop Marks")
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layer.set(inkex.addNS('groupmode', 'inkscape'), 'layer')
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#layer.set(inkex.addNS('insensitive', 'sodipodi'), 'true')
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gen.GenerateCropMarks(layer)
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if __name__ == '__main__':
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HexTiles().run() |