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

180 lines
8.2 KiB
Python

#! /usr/bin/env python
'''
Generates Inkscape SVG file containing up to two polygons or circle taking kerf and clearance into account
Copyright (C) 2016 Thore Mehr thore.mehr@gmail.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 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/>.
'''
__version__ = "0.8" ### please report bugs, suggestions etc to bugs@twot.eu ###
import inkex
import math
from lxml import etree
from inkex import Color
def drawS(s, XYstring, color): # Draw lines from a list
name='part'
style = { 'stroke': color, 'stroke-width': s.svg.unittouu("1px"), 'fill': 'none' }
drw = {'style':str(inkex.Style(style)),inkex.addNS('label','inkscape'):name,'d':XYstring}
etree.SubElement(parent, inkex.addNS('path','svg'), drw )
return
def groupdraw(s, XYstrings, colors) :
if len(XYstrings) == 1:
drawS(s, XYstrings[0], colors[0])
return
grp_name = 'Group'
grp_attribs = {inkex.addNS('label','inkscape'):grp_name}
grp = etree.SubElement(parent, 'g', grp_attribs)#the group to put everything in
name='part'
for i in range(len(XYstrings)):
style = { 'stroke': colors[i], 'fill': 'none' }
drw = {'style':str(inkex.Style(style)),inkex.addNS('label','inkscape'):name+str(i),'d':XYstrings[i]}
etree.SubElement(grp, inkex.addNS('path','svg'), drw )
return
def svg_from_points(points,offset):
s='M'+str(points[0][0]+offset[0])+','+str(points[0][1]+offset[1])
for i in range(1,len(points)):
s+='L'+str(points[i][0]+offset[0])+','+str(points[i][1]+offset[1])
s+='Z'
return s
class LasercutPolygon(inkex.EffectExtension):
def add_arguments(self, pars):
pars.add_argument('--page')
pars.add_argument('--unit', default='mm', help='Measure Units')
pars.add_argument('--o_type', type=int, default=1, help='Outer type')
pars.add_argument('--o_radius',type=float, default=100, help='Outer Radius')
pars.add_argument('--o_edges', type=int, default=1, help='Outer edges')
pars.add_argument('--o_r_type', type=int, default=1, help='Outer radius type')
pars.add_argument('--o_offset',type=float, default=100, help='Outer Radius')
pars.add_argument('--i_type', type=int, default=1, help='Inner type')
pars.add_argument('--i_radius',type=float, default=100, help='Inner Radius')
pars.add_argument('--i_edges', type=int, default=1, help='Inner edges')
pars.add_argument('--i_r_type', type=int, default=1, help='Inner radius type')
pars.add_argument('--i_offset',type=float, default=100, help='Outer Radius')
pars.add_argument('--kerf',type=float, default=0.5, help='Kerf (width) of cut')
pars.add_argument('--spacing',type=float, default=0.5)
pars.add_argument('--color1', type=Color, default='1923076095')
pars.add_argument('--color2', type=Color, default='4012452351')
pars.add_argument('--intensity', type=int, default=1)
pars.add_argument('--speed', type=int, default=1)
pars.add_argument('--pass_offset', type=int, default=1)
pars.add_argument('--displaylasertag', type=inkex.Boolean, default=False)
pars.add_argument('--lasertag', default="=pass%n:%s:%i:%c=")
def effect(self):
global parent,nomTab,equalTabs,thickness,kerf,correction
# Get access to main SVG document element and get its dimensions.
svg = self.document.getroot()
# Get the attibutes:
widthDoc = self.svg.unittouu(svg.get('width'))
heightDoc = self.svg.unittouu(svg.get('height'))
parent=self.svg.get_current_layer()
# Get script's option values.
unit=self.options.unit
kerf = self.svg.unittouu( str(self.options.kerf) + unit )
spacing = self.svg.unittouu( str(self.options.spacing) + unit )
o_type=self.options.o_type
o_edges=self.options.o_edges
o_r_type=self.options.o_r_type
o_radius=self.svg.unittouu(str(self.options.o_radius)+unit)+kerf
o_offset=math.radians(-self.options.o_offset)+math.pi
i_type=self.options.i_type
i_edges=self.options.i_edges
i_r_type=self.options.i_r_type
i_radius=self.svg.unittouu(str(self.options.i_radius)+unit)+kerf
i_offset=math.radians(-self.options.i_offset)+math.pi
color1=self.options.color1
color2=self.options.color2
intensity=self.options.intensity
speed=self.options.speed
pass_offset=self.options.pass_offset
lasertag=self.options.lasertag
if (o_r_type==2 and o_type==2):
#a/sin(alpa)=b/sin(beta)=c/sin(gamma)
#b=o_radius, alpha=(2*math.pi/o_edges), gamma=pi/2 , alpha+beta+gamma=pi->beta=pi-alpha+gamma
#search for c
#c=b*(sin(gamma)/sin(betta))
beta=math.pi/2-(math.pi/o_edges)
o_radius/=math.sin(beta)
if (o_r_type==3 and o_type==2):
beta=math.pi/2-(math.pi/o_edges)
o_radius*=math.sin(beta)/math.sin(math.pi/o_edges)
if (i_r_type==2 and i_type==3):
#a/sin(alpa)=b/sin(beta)=c/sin(gamma)
#b=o_radius, alpha=(2*math.pi/o_edges), gamma=pi/2 , alpha+beta+gamma=pi->beta=pi-alpha+gamma
#search for c
#c=b*(sin(gamma)/sin(betta))
beta=math.pi/2-(math.pi/i_edges)
i_radius/=math.sin(beta)
if (i_r_type==3 and i_type==3):
beta=math.pi/2-(math.pi/i_edges)
i_radius*=math.sin(beta)/math.sin(math.pi/o_edges)
#text = etree.Element(inkex.addNS('text','svg'))
#text.text = "Outside:"+str(self.uutounit(cabinet_width,unit))+"x"+str(self.uutounit(cabinet_depth,unit))+"x"+str(self.uutounit(cabinet_height,unit))+" "
#layer.append(text)
if(o_type==1):
s=['M '+str(spacing)+','+str(o_radius+spacing)+'a'+str(o_radius)+','+str(o_radius)+' 0 1,0 '+str(2*o_radius)+',0'+'a'+str(o_radius)+','+str(o_radius)+' 0 1,0 '+str(-2*o_radius)+',0']
if(o_type==2):
stepsize=2*math.pi/o_edges
points=[]
for i in range(o_edges):
points+=[(math.sin(o_offset+stepsize*i)*(o_radius+kerf),math.cos(o_offset+stepsize*i)*(o_radius+kerf))]
s=[svg_from_points(points,(o_radius+spacing,o_radius+spacing))]
if(i_type==2):
s+=['M '+str(spacing+o_radius-i_radius)+','+str(o_radius+spacing)+'a'+str(i_radius)+','+str(i_radius)+' 0 1,0 '+str(2*i_radius)+',0'+'a'+str(i_radius)+','+str(i_radius)+' 0 1,0 '+str(-2*i_radius)+',0']
if(i_type==3):
stepsize=2*math.pi/i_edges
points=[]
for i in range(i_edges):
points+=[(math.sin(i_offset+stepsize*i)*(i_radius+kerf),math.cos(i_offset+stepsize*i)*(i_radius+kerf))]
s+=[svg_from_points(points,(o_radius+spacing,o_radius+spacing))]
groupdraw(self, s,[color1,color2])
if self.options.displaylasertag:
# Create a new layer.
layer = etree.SubElement(svg, 'g')
layer.set(inkex.addNS('label', 'inkscape'), 'lasertag')
layer.set(inkex.addNS('groupmode', 'inkscape'), 'layer')
tag_1=lasertag
tag_1=tag_1.replace("%n",str(pass_offset+1)).replace("%s",str(speed)).replace("%i",str(intensity)).replace("%c",str(color2))
tag_2=lasertag
tag_2=tag_2.replace("%n",str(pass_offset+2)).replace("%s",str(speed)).replace("%i",str(intensity)).replace("%c",str(color1))
text = etree.Element(inkex.addNS('text','svg'))
text.text = tag_1
if (len(s)>1):
text.text+=" "+tag_2
layer.append(text)
if __name__ == '__main__':
LasercutPolygon().run()