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mightyscape-1.1-deprecated/extensions/fablabchemnitz_vh_to_line.py

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2020-08-23 00:48:27 +02:00
#!/usr/bin/env python3
#M 60.403,71.0937 V 89.268022 135.773
"""
Extension for InkScape 1.X
This extension converts an SVG path's d attribute the following way: find each V (vertical line) and each H (horizontal line) and replace it by a generic line (L type).
A lot of extensions do not work with V and H, but with L commands. So this is just a helper extension for other extensions :-)
Example conversion:
from: M 60.403,71.0937 V 89.268022 135.773
to: M 60.403 71.0937 L 60.403 89.268 L 60.403 135.773
Author: Mario Voigt / FabLab Chemnitz
Mail: mario.voigt@stadtfabrikanten.org
Date: 23.08.2020
Last patch: 23.08.2020
License: GNU GPL v3
"""
from math import *
import inkex
from inkex.paths import Path, CubicSuperPath
class VHToLine(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
def effect(self):
if len(self.svg.selected) == 0: exit("Please select at least one path.")
for obj in self.svg.selected: # The objects are the paths, which may be compound
curr = self.svg.selected[obj]
raw = Path(curr.get("d")).to_arrays()
subpaths, prev = [], 0
for i in range(len(raw)): # Breaks compound paths into simple paths
if raw[i][0] == 'M' and i != 0:
subpaths.append(raw[prev:i])
prev = i
subpaths.append(raw[prev:])
seg = []
for simpath in subpaths:
if simpath[-1][0] == 'Z':
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simpath[-1][0] = 'L'
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if simpath[-2][0] == 'L': simpath[-1][1] = simpath[0][1]
else: simpath.pop()
for i in range(len(simpath)):
if simpath[i][0] == 'V': # vertical and horizontal lines only have one point in args, but 2 are required
#inkex.utils.debug(simpath[i][0])
simpath[i][0]='L' #overwrite V with regular L command
add=simpath[i-1][1][0] #read the X value from previous segment
simpath[i][1].append(simpath[i][1][0]) #add the second (missing) argument by taking argument from previous segment
simpath[i][1][0]=add #replace with recent X after Y was appended
if simpath[i][0] == 'H': # vertical and horizontal lines only have one point in args, but 2 are required
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#inkex.utils.debug(simpath[i][0])
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simpath[i][0]='L' #overwrite H with regular L command
simpath[i][1].append(simpath[i-1][1][1]) #add the second (missing) argument by taking argument from previous segment
#inkex.utils.debug(simpath[i])
seg.append(simpath[i])
curr.set("d", Path(seg))
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VHToLine().run()