157 lines
5.8 KiB
Python
157 lines
5.8 KiB
Python
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#! /usr/bin/env python3
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import random
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rr = random.randint(1,10)
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import inkex
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from lxml import etree
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class Streaks(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument('--blur', type = int, default = 2)
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pars.add_argument('--linno', type = int, default = 50)
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pars.add_argument('--xrand', type = inkex.Boolean, default = True)
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pars.add_argument('--pagep', type = inkex.Boolean, default = True)
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pars.add_argument('--cusx', type = int, default = 500)
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pars.add_argument('--cusy', type = int, default = 500)
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pars.add_argument('--segLen', type = int, default = 8)
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pars.add_argument('--yrand', type = inkex.Boolean, default = True)
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pars.add_argument('--dashp', type = inkex.Boolean, default = True)
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pars.add_argument('--blankp', type = inkex.Boolean, default = True)
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pars.add_argument('--dotp', type = inkex.Boolean, default = True)
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pars.add_argument('--dots', type = int, default = 100)
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pars.add_argument('--strokeColor', default = 255)
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pars.add_argument('--strokeWidth', type = int, default = 2)
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pars.add_argument("--Nmain", default='title')
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def effect(self):
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blur = int(self.options.blur)
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linno = int(self.options.linno)
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xrand = bool(self.options.xrand)
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pagep = bool(self.options.pagep)
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cusx = int(self.options.cusx)
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cusy = int(self.options.cusy)
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segLen = int(self.options.segLen)
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yrand = bool(self.options.yrand)
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dashp = bool(self.options.dashp)
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blankp = bool(self.options.blankp)
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dotp = bool(self.options.dotp)
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dots = int(self.options.dots)
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strokeColor = int(self.options.strokeColor)
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strokeWidth = int(self.options.strokeWidth)
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# Get access to main SVG document element and get its dimensions.
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svg = self.document.getroot()
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if pagep :
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try :
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width = self.svg.unittouu(svg.get('width'))
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height = self.svg.unittouu(svg.attrib['height'])
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except AttributeError :
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width = self.unittouu(svg.get('width'))
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height = self.unittouu(svg.attrib['height'])
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# inkex.errormsg("Page size %d %d" % (width, height))
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else :
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width = cusx
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height = cusy
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# Find defs node.
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for child in svg :
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if -1 != child.tag.find("defs") :
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break
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else:
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inkex.errormsg("No defs child found")
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defs = child
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if blur :
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filter = etree.SubElement(defs, "filter")
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filter.set(inkex.addNS('collect', 'inkscape'), 'always')
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filname = self.svg.get_unique_id('filter')
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filter.set('id' , filname)
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finfo = etree.SubElement(filter, 'feGaussianBlur')
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finfo.set(inkex.addNS('collect', 'inkscape'), 'always')
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finfo.set('stdDeviation', str(blur))
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""" Debug
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for i in range(len(svg)) :
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k = svg[i].attrib
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for ky in k :
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inkex.errormsg(ky)
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# Clean any old layers
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flag = False
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for i in range(len(svg)) :
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dic = svg[i].attrib
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for key in dic:
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if -1 != key.find("label") :
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if 'Streak Layer' == dic[key] :
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del svg[i]
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flag = True
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if flag :
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inkex.errormsg("Found old Streak layer")
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else:
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inkex.errormsg("Clean")
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"""
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# Create a new layer.
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layer = etree.SubElement(svg, 'g')
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layer.set(inkex.addNS('label', 'inkscape'), 'Streak Layer')
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layer.set(inkex.addNS('groupmode', 'inkscape'), 'layer')
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# Create path element
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path = etree.Element(inkex.addNS('path','svg'))
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alpha = strokeColor & 255
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color = (strokeColor >> 8) & int('ffffff', 16)
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style = {
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'stroke' : '#%06X' % color,
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'stroke-width' : "{}px".format(strokeWidth),
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}
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#inkex.errormsg("Colour %s" % strokeColor)
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if blur : style['filter'] = 'url(#' + filname +')'
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path.set('style', str(inkex.Style(style)))
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pathstring = ''
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seglim = int(height / segLen)
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ditlen = int(height / dots)
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xco = 0
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while xco < width :
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y = 0
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flag = random.randint(0, 2)
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while y < height :
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if yrand :
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yinc = random.randint(1, seglim)
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else :
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yinc = seglim
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if flag == 1 and dashp: #Draw dash
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pathstring += ' M '+str(xco)+','+str(y)+' L '+str(xco)+','+str(min(y + yinc, height))
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y += yinc + ditlen
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elif flag == 2 and dotp: #Draw dots
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ylim = min(y + yinc, height)
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while y < ylim :
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pathstring += ' M '+str(xco)+','+str(y)+' L '+str(xco)+','+str(min(y + ditlen, height))
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y += 2*ditlen
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elif flag == 0 and blankp :
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y += yinc #Adding blank space
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elif not (dashp or dotp or blankp) : #Squiggle if user turns them off
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sdit = str(2*ditlen)+' '
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pathstring += ' M '+str(xco)+','+str(y)+' q '+ 2*sdit + '0 ' +sdit
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for i in range(int(height/(2*ditlen))) :
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pathstring += 't 0 '+sdit
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y = height
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flag = (flag + 1)%3
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if xrand :
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xco += random.randint(0, int(2 * width / linno))
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else :
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xco += width / linno
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path.set('d', pathstring)
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# Connect elements together.
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layer.append(path)
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if __name__ == '__main__':
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Streaks().run()
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