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mightyscape-0.92-deprecated/extensions/fablabchemnitz_apollonian.py

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2019-11-14 20:05:10 +01:00
#!$HOME/anaconda/bin/python
# -*- coding: utf-8 -*-
'''
Ripped from template.py
- makes an apollonian gasket
'''
import inkex # Required
import simplestyle # will be needed here for styles support
import fablabchemnitz_apolloniangasket_func
__version__ = '0.0'
inkex.localize()
### Your helper functions go here
def cplxs2pts(zs):
tt = []
for z in zs:
tt.extend([z.real,z.imag])
return tt
def draw_SVG_circle(parent, r, cx, cy, name):
" structre an SVG circle entity under parent "
circ_attribs = { 'cx': str(cx), 'cy': str(cy),
'r': str(r),
inkex.addNS('label','inkscape'): name}
circle = inkex.etree.SubElement(parent, inkex.addNS('circle','svg'), circ_attribs )
class Myextension(inkex.Effect): # choose a better name
def __init__(self):
" define how the options are mapped from the inx file "
inkex.Effect.__init__(self) # initialize the super class
# list of parameters defined in the .inx file
self.OptionParser.add_option("-d", "--depth",
action="store", type="int",
dest="depth", default=3,
help="command line help")
self.OptionParser.add_option("", "--c1",
action="store", type="float",
dest="c1", default=2.0,
help="command line help")
self.OptionParser.add_option("", "--c2",
action="store", type="float",
dest="c2", default=3.0,
help="command line help")
self.OptionParser.add_option("", "--c3",
action="store", type="float",
dest="c3", default=3.0,
help="command line help")
self.OptionParser.add_option("-x", "--shrink",
action="store", type="inkbool",
dest="shrink", default=True,
help="command line help")
# here so we can have tabs - but we do not use it directly - else error
self.OptionParser.add_option("", "--active-tab",
action="store", type="string",
dest="active_tab", default='title', # use a legitmate default
help="Active tab.")
def calc_unit_factor(self):
""" return the scale factor for all dimension conversions.
- The document units are always irrelevant as
everything in inkscape is expected to be in 90dpi pixel units
"""
# namedView = self.document.getroot().find(inkex.addNS('namedview', 'sodipodi'))
# doc_units = self.getUnittouu(str(1.0) + namedView.get(inkex.addNS('document-units', 'inkscape')))
unit_factor = self.getUnittouu(str(1.0) + self.options.units)
return unit_factor
### -------------------------------------------------------------------
### Main function and is called when the extension is run.
def effect(self):
#set up path styles
path_stroke = '#DD0000' # take color from tab3
path_fill = 'none' # no fill - just a line
path_stroke_width = 1. # can also be in form '0.6mm'
page_id = self.options.active_tab # sometimes wrong the very first time
style_curve = { 'stroke': path_stroke,
'fill': 'none',
'stroke-width': path_stroke_width }
# This finds center of current view in inkscape
t = 'translate(%s,%s)' % (self.view_center[0], self.view_center[1] )
# add a group to the document's current layer
#all the circles inherit style from this group
g_attribs = { inkex.addNS('label','inkscape'): 'zengon' + "_%d"%(self.options.depth),
inkex.addNS('transform-center-x','inkscape'): str(0),
inkex.addNS('transform-center-y','inkscape'): str(0),
'transform': t,
'style' : simplestyle.formatStyle(style_curve),
'info':'N: '}
topgroup = inkex.etree.SubElement(self.current_layer, 'g', g_attribs )
circles = fablabchemnitz_apolloniangasket_func.main(c1=self.options.c1,
c2=self.options.c2,
c3=self.options.c3,
depth=self.options.depth)
#shrink the circles so they don't touch
#useful for laser cutting
if self.options.shrink:
circles = circles[1:]
for cc in circles:
cc.r = abs(cc.r)
if cc.r >.5:
cc.r -= .1
else:
cc.r *= .9
scale_factor = 200
for c in circles:
cx, cy, r = c.m.real, c.m.imag, abs(c.r)
#rescale and add circle to document
cx, cy, r = scale_factor*cx , scale_factor*cy, scale_factor*r
draw_SVG_circle(topgroup,r,cx,cy,'apo')
if __name__ == '__main__':
e = Myextension()
e.affect()