720 lines
37 KiB
Python
720 lines
37 KiB
Python
#!/usr/bin/env python3
|
|
#
|
|
# Copyright (C) [2021] [Joseph Zakar], [observing@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 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
#
|
|
"""
|
|
Given a closed path of straight lines, this program generates a paper model of
|
|
(1) another copy of the closed path; (2) an extrusion (or more if it exceeds the
|
|
maximum length) represented by a strip with tabs and score lines; and (3) strips
|
|
for covering the tabbed strips.
|
|
"""
|
|
|
|
import inkex
|
|
from inkex import Path, Color
|
|
import math
|
|
import copy
|
|
|
|
class pathStruct(object):
|
|
def __init__(self):
|
|
self.id="path0000"
|
|
self.path=[]
|
|
self.enclosed=False
|
|
def __str__(self):
|
|
return self.path
|
|
|
|
class pnPoint(object):
|
|
# This class came from https://github.com/JoJocoder/PNPOLY
|
|
def __init__(self,p):
|
|
self.p=p
|
|
def __str__(self):
|
|
return self.p
|
|
def InPolygon(self,polygon,BoundCheck=False):
|
|
inside=False
|
|
if BoundCheck:
|
|
minX=polygon[0][0]
|
|
maxX=polygon[0][0]
|
|
minY=polygon[0][1]
|
|
maxY=polygon[0][1]
|
|
for p in polygon:
|
|
minX=min(p[0],minX)
|
|
maxX=max(p[0],maxX)
|
|
minY=min(p[1],minY)
|
|
maxY=max(p[1],maxY)
|
|
if self.p[0]<minX or self.p[0]>maxX or self.p[1]<minY or self.p[1]>maxY:
|
|
return False
|
|
j=len(polygon)-1
|
|
for i in range(len(polygon)):
|
|
if ((polygon[i][1]>self.p[1])!=(polygon[j][1]>self.p[1]) and (self.p[0]<(polygon[j][0]-polygon[i][0])*(self.p[1]-polygon[i][1])/( polygon[j][1] - polygon[i][1] ) + polygon[i][0])):
|
|
inside =not inside
|
|
j=i
|
|
return inside
|
|
|
|
class Extruder(inkex.EffectExtension):
|
|
|
|
def add_arguments(self, pars):
|
|
pars.add_argument("--usermenu")
|
|
pars.add_argument("--extrude", type=float, default=1.0, help="Width of extrusion in dimensional units")
|
|
pars.add_argument("--maxstrip", type=float, default=11.5, help="Maximum length of extrusion in dimensional units")
|
|
pars.add_argument("--tabangle", type=float, default=45.0, help="Angle of tab edges in degrees")
|
|
pars.add_argument("--tabheight", type=float, default=0.4, help="Height of tab in dimensional units")
|
|
pars.add_argument("--dashlength", type=float, default=0.1, help="Length of dashline in dimensional units (zero for solid line)")
|
|
pars.add_argument("--generate_decorative_wrapper", type=inkex.Boolean, default=False, help="Generate decorative wrapper")
|
|
pars.add_argument("--cosmetic_dash_style", type=inkex.Boolean, default=False, help="Cosmetic dash lines")
|
|
pars.add_argument("--unit", default="in", help="Dimensional units")
|
|
pars.add_argument("--color_solid", type=Color, default='4278190335', help="Solid line color")
|
|
pars.add_argument("--color_dash", type=Color, default='65535', help="Solid line dash")
|
|
pars.add_argument("--print_debug", type=inkex.Boolean, default=True, help="Print debug info")
|
|
|
|
#draw SVG line segment(s) between the given (raw) points
|
|
def drawline(self, dstr, name, parent, sstr=None):
|
|
line_style = {'stroke':'{}','stroke-width':'1','fill':'none'.format(self.options.color_solid)}
|
|
if sstr == None:
|
|
stylestr = str(inkex.Style(line_style))
|
|
else:
|
|
stylestr = sstr
|
|
el = parent.add(inkex.PathElement())
|
|
el.path = dstr
|
|
el.style = stylestr
|
|
el.label = name
|
|
|
|
def add_doc(self, path, apt1, apt2, offset, layer):
|
|
stylestr = "font-size:{0};line-height:1.25;font-family:sans-serif;stroke-width:0.264583".format(offset*2)
|
|
te = layer.add(inkex.TextElement())
|
|
te.style = stylestr
|
|
te.label = te.get_id()
|
|
te.text = "1"
|
|
te.set('x', apt1.x)
|
|
te.set('y', apt1.y)
|
|
te = layer.add(inkex.TextElement())
|
|
te.style = stylestr
|
|
te.label = te.get_id()
|
|
te.text = "2"
|
|
te.set('x', apt2.x)
|
|
te.set('y', apt2.y)
|
|
|
|
def pathInsidePath(self, path, testpath):
|
|
enclosed = True
|
|
for tp in testpath:
|
|
# If any point in the testpath is outside the path, it's not enclosed
|
|
if self.insidePath(path, tp) == False:
|
|
enclosed = False
|
|
return enclosed # True if testpath is fully enclosed in path
|
|
return enclosed
|
|
|
|
def insidePath(self, path, p):
|
|
point = pnPoint((p.x, p.y))
|
|
pverts = []
|
|
for pnum in path:
|
|
pverts.append((pnum.x, pnum.y))
|
|
isInside = point.InPolygon(pverts, True)
|
|
return isInside # True if point p is inside path
|
|
|
|
def makescore(self, pt1, pt2, dashlength):
|
|
# Draws a dashed line of dashlength between two points
|
|
# Dash = dashlength (in inches) space followed by dashlength mark
|
|
# if dashlength is zero, we want a solid line
|
|
apt1 = inkex.paths.Line(0.0,0.0)
|
|
apt2 = inkex.paths.Line(0.0,0.0)
|
|
ddash = ''
|
|
if math.isclose(dashlength, 0.0):
|
|
#inkex.utils.debug("Draw solid dashline")
|
|
ddash = ' M '+str(pt1.x)+','+str(pt1.y)+' L '+str(pt2.x)+','+str(pt2.y)
|
|
else:
|
|
if math.isclose(pt1.y, pt2.y):
|
|
#inkex.utils.debug("Draw horizontal dashline")
|
|
if pt1.x < pt2.x:
|
|
xcushion = pt2.x - dashlength
|
|
xpt = pt1.x
|
|
ypt = pt1.y
|
|
else:
|
|
xcushion = pt1.x - dashlength
|
|
xpt = pt2.x
|
|
ypt = pt2.y
|
|
ddash = ''
|
|
done = False
|
|
while not(done):
|
|
if (xpt + dashlength*2) <= xcushion:
|
|
xpt = xpt + dashlength
|
|
ddash = ddash + ' M ' + str(xpt) + ',' + str(ypt)
|
|
xpt = xpt + dashlength
|
|
ddash = ddash + ' L ' + str(xpt) + ',' + str(ypt)
|
|
else:
|
|
done = True
|
|
elif math.isclose(pt1.x, pt2.x):
|
|
#inkex.utils.debug("Draw vertical dashline")
|
|
if pt1.y < pt2.y:
|
|
ycushion = pt2.y - dashlength
|
|
xpt = pt1.x
|
|
ypt = pt1.y
|
|
else:
|
|
ycushion = pt1.y - dashlength
|
|
xpt = pt2.x
|
|
ypt = pt2.y
|
|
ddash = ''
|
|
done = False
|
|
while not(done):
|
|
if(ypt + dashlength*2) <= ycushion:
|
|
ypt = ypt + dashlength
|
|
ddash = ddash + ' M ' + str(xpt) + ',' + str(ypt)
|
|
ypt = ypt + dashlength
|
|
ddash = ddash + ' L ' + str(xpt) + ',' + str(ypt)
|
|
else:
|
|
done = True
|
|
else:
|
|
#inkex.utils.debug("Draw sloping dashline")
|
|
if pt1.y > pt2.y:
|
|
apt1.x = pt1.x
|
|
apt1.y = pt1.y
|
|
apt2.x = pt2.x
|
|
apt2.y = pt2.y
|
|
else:
|
|
apt1.x = pt2.x
|
|
apt1.y = pt2.y
|
|
apt2.x = pt1.x
|
|
apt2.y = pt1.y
|
|
m = (apt1.y-apt2.y)/(apt1.x-apt2.x)
|
|
theta = math.atan(m)
|
|
msign = (m>0) - (m<0)
|
|
ycushion = apt2.y + dashlength*math.sin(theta)
|
|
xcushion = apt2.x + msign*dashlength*math.cos(theta)
|
|
ddash = ''
|
|
xpt = apt1.x
|
|
ypt = apt1.y
|
|
done = False
|
|
while not(done):
|
|
nypt = ypt - dashlength*2*math.sin(theta)
|
|
nxpt = xpt - msign*dashlength*2*math.cos(theta)
|
|
if (nypt >= ycushion) and (((m<0) and (nxpt <= xcushion)) or ((m>0) and (nxpt >= xcushion))):
|
|
# move to end of space / beginning of mark
|
|
xpt = xpt - msign*dashlength*math.cos(theta)
|
|
ypt = ypt - msign*dashlength*math.sin(theta)
|
|
ddash = ddash + ' M ' + str(xpt) + ',' + str(ypt)
|
|
# draw the mark
|
|
xpt = xpt - msign*dashlength*math.cos(theta)
|
|
ypt = ypt - msign*dashlength*math.sin(theta)
|
|
ddash = ddash + ' L ' + str(xpt) + ',' + str(ypt)
|
|
else:
|
|
done = True
|
|
return ddash
|
|
|
|
def detectIntersect(self, x1, y1, x2, y2, x3, y3, x4, y4):
|
|
td = (x1-x2)*(y3-y4)-(y1-y2)*(x3-x4)
|
|
if td == 0:
|
|
# These line segments are parallel
|
|
return False
|
|
t = ((x1-x3)*(y3-y4)-(y1-y3)*(x3-x4))/td
|
|
if (0.0 <= t) and (t <= 1.0):
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def makeTab(self, tpath, pt1, pt2, tabht, taba):
|
|
# tpath - the pathstructure containing pt1 and pt2
|
|
# pt1, pt2 - the two points where the tab will be inserted
|
|
# tabht - the height of the tab
|
|
# taba - the angle of the tab sides
|
|
# returns the two tab points in order of closest to pt1
|
|
tpt1 = inkex.paths.Line(0.0,0.0)
|
|
tpt2 = inkex.paths.Line(0.0,0.0)
|
|
currTabHt = tabht
|
|
currTabAngle = taba
|
|
testAngle = 1.0
|
|
testHt = currTabHt * 0.001
|
|
adjustTab = 0
|
|
tabDone = False
|
|
while not tabDone:
|
|
# Let's find out the orientation of the tab
|
|
if math.isclose(pt1.x, pt2.x):
|
|
# It's vertical. Let's try the right side
|
|
if pt1.y < pt2.y:
|
|
tpt1.x = pt1.x + testHt
|
|
tpt2.x = pt2.x + testHt
|
|
tpt1.y = pt1.y + testHt/math.tan(math.radians(testAngle))
|
|
tpt2.y = pt2.y - testHt/math.tan(math.radians(testAngle))
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.x = pt1.x - currTabHt
|
|
tpt2.x = pt2.x - currTabHt
|
|
else:
|
|
tpt1.x = pt1.x + currTabHt
|
|
tpt2.x = pt2.x + currTabHt
|
|
tpt1.y = pt1.y + currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.y = pt2.y - currTabHt/math.tan(math.radians(currTabAngle))
|
|
else: # pt2.y < pt1.y
|
|
tpt1.x = pt1.x + testHt
|
|
tpt2.x = pt2.x + testHt
|
|
tpt1.y = pt1.y - testHt/math.tan(math.radians(testAngle))
|
|
tpt2.y = pt2.y + testHt/math.tan(math.radians(testAngle))
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.x = pt1.x - currTabHt
|
|
tpt2.x = pt2.x - currTabHt
|
|
else:
|
|
tpt1.x = pt1.x + currTabHt
|
|
tpt2.x = pt2.x + currTabHt
|
|
tpt1.y = pt1.y - currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.y = pt2.y + currTabHt/math.tan(math.radians(currTabAngle))
|
|
elif math.isclose(pt1.y, pt2.y):
|
|
# It's horizontal. Let's try the top
|
|
if pt1.x < pt2.x:
|
|
tpt1.y = pt1.y - testHt
|
|
tpt2.y = pt2.y - testHt
|
|
tpt1.x = pt1.x + testHt/math.tan(math.radians(testAngle))
|
|
tpt2.x = pt2.x - testHt/math.tan(math.radians(testAngle))
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.y = pt1.y + currTabHt
|
|
tpt2.y = pt2.y + currTabHt
|
|
else:
|
|
tpt1.y = pt1.y - currTabHt
|
|
tpt2.y = pt2.y - currTabHt
|
|
tpt1.x = pt1.x + currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.x = pt2.x - currTabHt/math.tan(math.radians(currTabAngle))
|
|
else: # pt2.x < pt1.x
|
|
tpt1.y = pt1.y - testHt
|
|
tpt2.y = pt2.y - testHt
|
|
tpt1.x = pt1.x - testHt/math.tan(math.radians(testAngle))
|
|
tpt2.x = pt2.x + testHt/math.tan(math.radians(testAngle))
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.y = pt1.y + currTabHt
|
|
tpt2.y = pt2.y + currTabHt
|
|
else:
|
|
tpt1.y = pt1.y - currTabHt
|
|
tpt2.y = pt2.y - currTabHt
|
|
tpt1.x = pt1.x - currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.x = pt2.x + currTabHt/math.tan(math.radians(currTabAngle))
|
|
|
|
else: # the orientation is neither horizontal nor vertical
|
|
# Let's get the slope of the line between the points
|
|
# Because Inkscape's origin is in the upper-left corner,
|
|
# a positive slope (/) will yield a negative value
|
|
slope = (pt2.y - pt1.y)/(pt2.x - pt1.x)
|
|
# Let's get the angle to the horizontal
|
|
theta = math.degrees(math.atan(slope))
|
|
# Let's construct a horizontal tab
|
|
seglength = math.sqrt((pt1.x-pt2.x)**2 +(pt1.y-pt2.y)**2)
|
|
if slope < 0.0:
|
|
if pt1.x < pt2.x:
|
|
tpt1.y = pt1.y - testHt
|
|
tpt2.y = pt2.y - testHt
|
|
tpt1.x = pt1.x + testHt/math.tan(math.radians(testAngle))
|
|
tpt2.x = pt2.x - testHt/math.tan(math.radians(testAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.y = pt1.y + currTabHt
|
|
tpt2.y = pt2.y + currTabHt
|
|
else:
|
|
tpt1.y = pt1.y - currTabHt
|
|
tpt2.y = pt2.y - currTabHt
|
|
tpt1.x = pt1.x + currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.x = pt2.x - currTabHt/math.tan(math.radians(currTabAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
else: # pt1.x > pt2.x
|
|
tpt1.y = pt1.y - testHt
|
|
tpt2.y = pt2.y - testHt
|
|
tpt1.x = pt1.x - testHt/math.tan(math.radians(testAngle))
|
|
tpt2.x = pt2.x + testHt/math.tan(math.radians(testAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.y = pt1.y + currTabHt
|
|
tpt2.y = pt2.y + currTabHt
|
|
else:
|
|
tpt1.y = pt1.y - currTabHt
|
|
tpt2.y = pt2.y - currTabHt
|
|
tpt1.x = pt1.x - currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.x = pt2.x + currTabHt/math.tan(math.radians(currTabAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
else: # slope > 0.0
|
|
if pt1.x < pt2.x:
|
|
tpt1.y = pt1.y - testHt
|
|
tpt2.y = pt2.y - testHt
|
|
tpt1.x = pt1.x + testHt/math.tan(math.radians(testAngle))
|
|
tpt2.x = pt2.x - testHt/math.tan(math.radians(testAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.y = pt1.y + currTabHt
|
|
tpt2.y = pt2.y + currTabHt
|
|
else:
|
|
tpt1.y = pt1.y - currTabHt
|
|
tpt2.y = pt2.y - currTabHt
|
|
tpt1.x = pt1.x + currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.x = pt2.x - currTabHt/math.tan(math.radians(currTabAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
else: # pt1.x > pt2.x
|
|
tpt1.y = pt1.y - testHt
|
|
tpt2.y = pt2.y - testHt
|
|
tpt1.x = pt1.x - testHt/math.tan(math.radians(testAngle))
|
|
tpt2.x = pt2.x + testHt/math.tan(math.radians(testAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
pnpt1 = inkex.paths.Move(tpt1.x, tpt1.y)
|
|
pnpt2 = inkex.paths.Move(tpt2.x, tpt2.y)
|
|
if ((not tpath.enclosed) and (self.insidePath(tpath.path, pnpt1) or self.insidePath(tpath.path, pnpt2))) or \
|
|
(tpath.enclosed and ((not self.insidePath(tpath.path, pnpt1)) and (not self.insidePath(tpath.path, pnpt2)))):
|
|
tpt1.y = pt1.y + currTabHt
|
|
tpt2.y = pt2.y + currTabHt
|
|
else:
|
|
tpt1.y = pt1.y - currTabHt
|
|
tpt2.y = pt2.y - currTabHt
|
|
tpt1.x = pt1.x - currTabHt/math.tan(math.radians(currTabAngle))
|
|
tpt2.x = pt2.x + currTabHt/math.tan(math.radians(currTabAngle))
|
|
tl1 = [('M', [pt1.x,pt1.y])]
|
|
tl1 += [('L', [tpt1.x, tpt1.y])]
|
|
ele1 = inkex.Path(tl1)
|
|
tl2 = [('M', [pt1.x,pt1.y])]
|
|
tl2 += [('L', [tpt2.x, tpt2.y])]
|
|
ele2 = inkex.Path(tl2)
|
|
thetal1 = ele1.rotate(theta, [pt1.x,pt1.y])
|
|
thetal2 = ele2.rotate(theta, [pt2.x,pt2.y])
|
|
tpt1.x = thetal1[1].x
|
|
tpt1.y = thetal1[1].y
|
|
tpt2.x = thetal2[1].x
|
|
tpt2.y = thetal2[1].y
|
|
# Check to see if any tabs intersect each other
|
|
if self.detectIntersect(pt1.x, pt1.y, tpt1.x, tpt1.y, pt2.x, pt2.y, tpt2.x, tpt2.y):
|
|
# Found an intersection.
|
|
if adjustTab == 0:
|
|
# Try increasing the tab angle in one-degree increments
|
|
currTabAngle = currTabAngle + 1.0
|
|
if currTabAngle > 88.0: # We're not increasing the tab angle above 89 degrees
|
|
adjustTab = 1
|
|
currTabAngle = taba
|
|
if adjustTab == 1:
|
|
# So, try reducing the tab height in 20% increments instead
|
|
currTabHt = currTabHt - tabht*0.2 # Could this lead to a zero tab_height?
|
|
if currTabHt <= 0.0:
|
|
# Give up
|
|
currTabHt = tabht
|
|
adjustTab = 2
|
|
if adjustTab == 2:
|
|
tabDone = True # Just show the failure
|
|
else:
|
|
tabDone = True
|
|
|
|
return tpt1,tpt2
|
|
|
|
def effect(self):
|
|
layer = self.svg.get_current_layer()
|
|
doc_layer = self.svg.add(inkex.elements._groups.Layer.new('Layer Doc'))
|
|
scale = self.svg.unittouu('1'+self.options.unit)
|
|
extrude = float(self.options.extrude) * scale
|
|
maxstrip = float(self.options.maxstrip) * scale
|
|
tab_angle = float(self.options.tabangle)
|
|
tab_height = float(self.options.tabheight) * scale
|
|
dashlength = float(self.options.dashlength) * scale
|
|
#tabsets = self.options.tabsets <-- for a future feature
|
|
npaths = []
|
|
elems = []
|
|
for selem in self.svg.selection.filter(inkex.PathElement):
|
|
elems.append(selem)
|
|
if len(elems) == 0:
|
|
raise inkex.AbortExtension("Nothing selected")
|
|
for elem in elems:
|
|
backend = elem.copy() # Make a copy of it
|
|
layer.append(backend)
|
|
escale = 1.0
|
|
if 'transform' in elem.attrib:
|
|
transforms = elem.attrib['transform'].split()
|
|
for tf in transforms:
|
|
if tf.startswith('scale'):
|
|
escale = float(tf.split('(')[1].split(')')[0])
|
|
# Get style of original polygon
|
|
if 'style' in elem.attrib:
|
|
sstr = elem.attrib['style']
|
|
if not math.isclose(escale, 1.0):
|
|
lsstr = sstr.split(';')
|
|
for stoken in range(len(lsstr)):
|
|
if lsstr[stoken].startswith('stroke-width'):
|
|
swt = lsstr[stoken].split(':')[1]
|
|
swf = str(float(swt)*escale)
|
|
lsstr[stoken] = lsstr[stoken].replace(swt, swf)
|
|
if lsstr[stoken].startswith('stroke-miterlimit'):
|
|
swt = lsstr[stoken].split(':')[1]
|
|
swf = str(float(swt)*escale)
|
|
lsstr[stoken] = lsstr[stoken].replace(swt, swf)
|
|
sstr = ";".join(lsstr)
|
|
else:
|
|
sstr = None
|
|
last_letter = 'Z'
|
|
savid = elem.get_id()
|
|
idmod = 0
|
|
parent = elem.getparent()
|
|
#if parent != self.svg.root:
|
|
# elem.path.transform = elem.path.transform(parent.composed_transform())
|
|
elementPath = elem.path.to_non_shorthand().to_absolute()
|
|
isClosed = False
|
|
raw = elementPath.to_arrays()
|
|
if raw[-1][0] == 'Z' or \
|
|
(raw[-1][0] == 'L' and raw[0][1] == raw[-1][1]) or \
|
|
(raw[-1][0] == 'C' and raw[0][1] == [raw[-1][1][-2], raw[-1][1][-1]]) \
|
|
: #if first is last point the path is also closed. The "Z" command is not required
|
|
isClosed = True
|
|
if isClosed is False:
|
|
if self.options.print_debug is True:
|
|
self.msg("Warning! Path {} is not closed. Skipping ...".format(elem.get('id')))
|
|
continue
|
|
npaths.clear()
|
|
|
|
for ptoken in elementPath: # For each point in the path
|
|
ptx2 = None
|
|
pty2 = None
|
|
if ptoken.letter == 'M': # Starting point
|
|
# Hold this point in case we receive a Z
|
|
ptx1 = mx = ptoken.x * escale
|
|
pty1 = my = ptoken.y * escale
|
|
'''
|
|
Assign a structure to the new path. We assume that there is
|
|
only one path and, therefore, it isn't enclosed by a
|
|
sub-path. However, we'll suffix the ID, if we find a
|
|
sub-path.
|
|
'''
|
|
npath = pathStruct()
|
|
npath.enclosed = False
|
|
npath.id = elem.get_id()+"-"+str(idmod)
|
|
idmod += 1
|
|
npath.path.append(inkex.paths.Move(ptx1,pty1))
|
|
else:
|
|
if last_letter != 'M':
|
|
ptx1 = ptx2
|
|
pty1 = pty2
|
|
if ptoken.letter == 'L':
|
|
ptx2 = ptoken.x * escale
|
|
pty2 = ptoken.y * escale
|
|
elif ptoken.letter == 'H':
|
|
ptx2 = ptoken.x * escale
|
|
pty2 = pty1
|
|
elif ptoken.letter == 'V':
|
|
ptx2 = ptx1
|
|
pty2 = ptoken.y * escale
|
|
elif ptoken.letter == 'Z':
|
|
ptx2 = mx
|
|
pty2 = my
|
|
else:
|
|
raise inkex.AbortExtension("Unrecognized path command {0}. Please convert to polyline before!".format(ptoken.letter))
|
|
npath.path.append(inkex.paths.Line(ptx2,pty2))
|
|
if ptoken.letter == 'Z':
|
|
npaths.append(npath)
|
|
last_letter = ptoken.letter
|
|
# check for cutouts
|
|
if idmod > 1:
|
|
for apath in npaths: # We test these paths to see if they are fully enclosed
|
|
for bpath in npaths: # by these paths
|
|
if self.pathInsidePath(bpath.path, apath.path):
|
|
apath.enclosed = True
|
|
for opath in npaths:
|
|
if True: # We'll handle outside paths and the cutouts, too
|
|
# create the extruded path
|
|
xpos = ypos = 0.0
|
|
segs = pathStruct()
|
|
segs.enclosed = False
|
|
segs.id = opath.id+"x"
|
|
segs.path.append(inkex.paths.Move(xpos,ypos))
|
|
strips = [] # Needed because a single strip might be larger than the paper
|
|
scores = [] # holds lists of individual score lines per strip
|
|
score = [] # holds a list of individual score lines
|
|
spaths = ''
|
|
# create left edge of path
|
|
for jnode in range(0,len(opath.path)-1):
|
|
if jnode == 0:
|
|
# Let's draw the first two node numbers to show the starting point and direction
|
|
self.add_doc(opath.path, opath.path[jnode], opath.path[jnode+1], 0.5*tab_height, doc_layer)
|
|
# calculate length of segment between jnode and jnode+1
|
|
seglength = math.sqrt((opath.path[jnode].x - opath.path[jnode+1].x)**2 + (opath.path[jnode].y - opath.path[jnode+1].y)**2)
|
|
if ypos + seglength + tab_height >= maxstrip:
|
|
# have to cut it at last segment
|
|
strips.append(copy.deepcopy(segs))
|
|
segs = pathStruct() # start a new segment
|
|
segs.enclosed = False
|
|
segs.id = opath.id+"x"
|
|
ypos = 0
|
|
scores.append(copy.deepcopy(score))
|
|
score.clear()
|
|
spaths = ''
|
|
segs.path.append(inkex.paths.Move(xpos,ypos))
|
|
ypos = ypos + seglength
|
|
segs.path.append(inkex.paths.Move(xpos,ypos))
|
|
if jnode < len(opath.path)-1:
|
|
# Generate score lines across extrusion
|
|
score.append(self.makescore(inkex.paths.Move(xpos,ypos), inkex.paths.Move(extrude, ypos),dashlength))
|
|
strips.append(copy.deepcopy(segs))
|
|
scores.append(copy.deepcopy(score))
|
|
score.clear()
|
|
# create right edge of path
|
|
for knode in range(len(strips)):
|
|
rsegs = strips[knode].path[::-1]
|
|
for jnode in range(0,len(rsegs)):
|
|
strips[knode].path.append(inkex.paths.Move(extrude, rsegs[jnode].y))
|
|
rsegs.clear()
|
|
# Generate the deco strips from the extruded paths
|
|
for stripcnt in range(len(strips)):
|
|
for nodes in range(len(strips[stripcnt].path)):
|
|
if nodes == 0:
|
|
dprop = 'M '
|
|
else:
|
|
dprop = dprop + ' L '
|
|
dprop = dprop + str(strips[stripcnt].path[nodes].x) + ',' + str(strips[stripcnt].path[nodes].y)
|
|
## and close the path
|
|
dprop = dprop + ' Z'
|
|
spaths = ''
|
|
for scorecnt in range(len(scores[stripcnt])-1): # each list of individual scorelines across extrusion per strip
|
|
scorex = scores[stripcnt][scorecnt]
|
|
for sc in scorex:
|
|
spaths += sc
|
|
if math.isclose(dashlength, 0.0) and spaths != '':
|
|
group = inkex.elements._groups.Group()
|
|
group.label = 'g'+opath.id+'ws'+str(stripcnt)
|
|
if self.options.generate_decorative_wrapper is True:
|
|
self.drawline(dprop,'wrapper'+str(stripcnt),group,sstr) # Output the model
|
|
self.drawline(spaths[1:],'score'+str(stripcnt)+'m',group,sstr) # Output the scorelines separately
|
|
layer.append(group)
|
|
else:
|
|
dprop = dprop + spaths
|
|
self.drawline(dprop,opath.id+'d'+str(stripcnt),layer,sstr)
|
|
# Generate the tabbed strips from the extruded paths
|
|
dprop = ''
|
|
for stripcnt in range(len(strips)):
|
|
strip = strips[stripcnt]
|
|
mpath = [strip.path[0]]
|
|
for ptn in range(len(strip.path)-1):
|
|
tabpt1, tabpt2 = self.makeTab(strip, strip.path[ptn], strip.path[ptn+1], tab_height, tab_angle)
|
|
mpath.append(tabpt1)
|
|
mpath.append(tabpt2)
|
|
mpath.append(strip.path[ptn+1])
|
|
score.append(self.makescore(strip.path[ptn], strip.path[ptn+1],dashlength))
|
|
scores[stripcnt].append(copy.deepcopy(score))
|
|
score.clear()
|
|
for nodes in range(len(mpath)):
|
|
if nodes == 0:
|
|
dprop = 'M '
|
|
else:
|
|
dprop = dprop + ' L '
|
|
dprop = dprop + str(mpath[nodes].x) + ',' + str(mpath[nodes].y)
|
|
## and close the path
|
|
dprop = dprop + ' Z'
|
|
spaths = ''
|
|
for scorecnt in range(len(scores[stripcnt])): # each list of individual scorelines across extrusion and tabs per strip
|
|
scorex = scores[stripcnt][scorecnt]
|
|
for sc in scorex:
|
|
spaths += sc
|
|
if spaths != '':
|
|
group = inkex.elements._groups.Group()
|
|
group.label = 'g'+opath.id+'ms'+str(stripcnt)
|
|
self.drawline(dprop,'model'+str(stripcnt),group,sstr+';stroke:{}'.format(self.options.color_solid)) # Output the model
|
|
dscore_style = sstr+';stroke:{}'.format(self.options.color_dash)
|
|
if self.options.cosmetic_dash_style is True:
|
|
dscore_style += ';stroke-dasharray:{}'.format(3, 3)
|
|
self.drawline(spaths[1:],'score'+str(stripcnt)+'m',group,dscore_style) # Output the scorelines separately
|
|
layer.append(group)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
Extruder().run()
|