fixes in unwind paths; added mpdify path start extension
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<?xml version="1.0" encoding="UTF-8"?>
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<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
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<name>Modify Path Start Node</name>
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<id>fablabchemnitz.de.modify_path_start</id>
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<param name="tab" type="notebook">
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<page name="tab_settings" gui-text="Modify Path Start Node">
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<param name="closed_only" type="bool" gui-text="Handle closed paths only" gui-description="If disabled we also apply on open (sub)paths. Warning: This REMOVES segments!">true</param>
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<param name="movenode" type="int" min="-99999" max="99999" gui-text="Move starting node n nodes further">0</param>
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<param name="visualize_result" type="bool" gui-text="Visualize first two nodes" gui-description="If enabled first two nodes get a number and a dot">false</param>
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<param name="fontsize" type="string" gui-text="Font size:">10px</param>
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<param name="dotsize" type="string" gui-text="Dot size:">10px</param>
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<param name="debug" type="bool" gui-text="Debug Output">false</param>
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<label appearance="header">Notes</label>
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<label>Use "Path > Reverse" to change path direction</label>
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<label>Use extension "Chain Paths" to make closed paths out of segments.</label>
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</page>
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<page name="tab_about" gui-text="About">
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<label appearance="header">Modify Path Start Node</label>
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<label>Extension to change starting node of a path and visualize it by dots and numbers</label>
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<label>2021 / written by Mario Voigt (Stadtfabrikanten e.V. / FabLab Chemnitz)</label>
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<spacer/>
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<label appearance="header">Online Documentation</label>
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<label appearance="url">https://y.stadtfabrikanten.org/modifypathstartnode</label>
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<spacer/>
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<label appearance="header">Contributing</label>
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<label appearance="url">https://gitea.fablabchemnitz.de/MarioVoigt/mightyscape-1.X</label>
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<label appearance="url">mailto:mario.voigt@stadtfabrikanten.org</label>
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<spacer/>
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<label appearance="header">MightyScape Extension Collection</label>
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<label>This piece of software is part of the MightyScape for Inkscape Extension Collection and is licensed under GNU GPL v3</label>
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<label appearance="url">https://y.stadtfabrikanten.org/mightyscape-overview</label>
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</page>
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<page name="tab_donate" gui-text="Donate">
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<label appearance="header">Coffee + Pizza</label>
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<label>We are the Stadtfabrikanten, running the FabLab Chemnitz since 2016. A FabLab is an open workshop that gives people access to machines and digital tools like 3D printers, laser cutters and CNC milling machines.</label>
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<spacer/>
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<label>You like our work and want to support us? You can donate to our non-profit organization by different ways:</label>
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<label appearance="url">https://y.stadtfabrikanten.org/donate</label>
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<spacer/>
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<label>Thanks for using our extension and helping us!</label>
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<image>../000_about_fablabchemnitz.svg</image>
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</page>
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</param>
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<effect>
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<object-type>path</object-type>
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<effects-menu>
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<submenu name="FabLab Chemnitz">
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<submenu name="Modify existing Path(s)"/>
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</submenu>
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</effects-menu>
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</effect>
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<script>
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<command location="inx" interpreter="python">modify_path_start.py</command>
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</script>
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</inkscape-extension>
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177
extensions/fablabchemnitz/modify_path_start/modify_path_start.py
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177
extensions/fablabchemnitz/modify_path_start/modify_path_start.py
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#!/usr/bin/env python3
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'''
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Author: Mario Voigt / FabLab Chemnitz
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Mail: mario.voigt@stadtfabrikanten.org
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Date: 19.05.2021
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Last patch: 19.05.2021
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License: GNU GPL v3
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ToDo:
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add group id like path id
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link for usage: plotting/laser cutting, path unwinding plugin > startpunkt für anwicklung
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'''
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import copy
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import inkex
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from inkex import Circle, TextElement, Path, PathElement, CubicSuperPath
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class ModifyStartDirection(inkex.EffectExtension):
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def modify(self, element):
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raw = element.path.to_arrays()
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subpaths, prev = [], 0
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for i in range(len(raw)): # Breaks compound paths into simple paths
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if raw[i][0] == 'M' and i != 0:
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subpaths.append(raw[prev:i])
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prev = i
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subpaths.append(raw[prev:])
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if self.options.debug is True:
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self.msg("Element {} has {} subpath(s)".format(element.get('id'), len(subpaths)))
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subpathNr = 0
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for path in subpaths:
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subpathNr += 1
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newSubpaths = subpaths #we will overwrite them later
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pathIsClosed = False
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if path[-1][0] == 'Z' or \
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(path[-1][0] == 'L' and path[0][1] == path[-1][1]) or \
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(path[-1][0] == 'C' and path[0][1] == [path[-1][1][-2], path[-1][1][-1]]) \
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: #if first is last point the path is also closed. The "Z" command is not required
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pathIsClosed = True
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if self.options.debug is True:
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self.msg("pathIsClosed = " + str(pathIsClosed))
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if self.options.closed_only is True and pathIsClosed is False:
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self.msg("Path {}/subpath {} is not closed!".format(element.get('id'), subpathNr))
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continue #skip this open path
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if path[-1][0] == 'Z': #replace Z with another L command (which moves to the coordinates of the first M command in path) to have better overview
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path[-1][0] = 'L'
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path[-1][1] = path[0][1]
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#adjust if entered move number is higher than actual node count. We handle as infinite looping
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moves = self.options.movenode % len(path)
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if pathIsClosed is True: #if closed start and end collapse and "duplicate"
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moves = self.options.movenode % (len(path) - 1)
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if self.options.debug is True:
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self.msg("root path:")
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self.msg(path)
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self.msg("-"*25)
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if self.options.debug is True:
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self.msg("moves = " + str(moves))
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for i in range(moves):
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if len(path) > 2: #the path needs at least more than two nodes
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#we move the first node to the end of the list
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move = path[0]
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del path[0]
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path.append(move)
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if self.options.debug is True:
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self.msg("moved path:")
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self.msg(path)
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self.msg("-"*25)
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oldseg = copy.deepcopy(path[0]) #if we assign like "oldseg = path[0]", it will get overwritten. So we need copy
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#Now we messed the integrity of the path. It does not begin with 'M' now. But we need an 'M'.
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#It now either starts with L or C. H, V, Z cannot occure here.
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if path[0][0] == 'C': #and path[-1][0] == 'M':
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#self.msg("C to M")
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path[0][1] = [path[0][1][-2], path[0][1][-1]]
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elif path[0][0] == 'L': #and path[-1][0] == 'M':
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#self.msg("L to M")
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path[0][1] = [path[0][1][0], path[0][1][1]]
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#else:
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# self.msg("no idea")
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path[0][0] = 'M' #we really need M. Does not matter if 'L' or 'C'.
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if pathIsClosed is True:
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if path[-1][0] == 'M' and len(oldseg[1]) == 2: #data of an 'L' command
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path[-1][0] = 'L'
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path[-1][1] = path[0][1]
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elif path[-1][0] == 'M' and len(oldseg[1]) > 2: #data of an 'C' command
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path[-1][0] = 'C'
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path[-1][1] = oldseg[1]
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else:
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if path[-1][0] == 'M': #if open path we just drop the dangling 'M' command completely
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del path[-1]
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if self.options.debug is True:
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self.msg("final path:")
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self.msg(path)
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self.msg("-"*25)
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newSubpaths[subpathNr - 1] = path
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#else:
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# inkex.utils.debug("More moves entered than possible to apply")
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composedPath = inkex.Path()
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for newSubpath in newSubpaths:
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composedPath.extend(newSubpath)
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if self.options.debug is True:
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self.msg("Composed path = " + str(composedPath))
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element.path = composedPath
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def visualizeFirstTwo(self, element):
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"""Add a dot label for this path element"""
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group = element.getparent().add(inkex.Group())
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dot_group = group.add(inkex.Group(id="dot-group-" + element.get('id')))
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num_group = group.add(inkex.Group(id="num-group-" + element.get('id')))
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group.transform = element.transform
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radius = self.svg.unittouu(self.options.dotsize) / 2
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count = 0
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for step, (x, y) in enumerate(element.path.end_points):
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count += 1
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circle = Circle(cx=str(x), cy=str(y), r=str(radius))
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circle.style = inkex.Style({'stroke': 'none', 'fill': '#000'})
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text = TextElement(x=str(x + radius), y=str(y - radius))
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text.text = str(count) #we start with #1
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text.style = inkex.Style({'font-size': self.svg.unittouu(self.options.fontsize), 'fill-opacity': '1.0', 'stroke': 'none',
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'font-weight': 'normal', 'font-style': 'normal', 'fill': '#999'})
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dot_group.append(circle)
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num_group.append(text)
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if count > 1: #we only display first two points to see the position of the first node and the path direction
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break
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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pars.add_argument("--closed_only", type=inkex.Boolean, default=False, help="If disabled we also apply on open (sub)path. Warning: This REMOVES segments!")
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pars.add_argument("--movenode", type=int, default=0, help="Move starting node n nodes further")
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pars.add_argument('--visualize_result', type=inkex.Boolean, default=False, help="If enabled each node gets a number and a dot")
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pars.add_argument("--dotsize", default="10px", help="Size of the dots on the path nodes")
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pars.add_argument("--fontsize", default="20px", help="Size of node labels")
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pars.add_argument("--debug", type=inkex.Boolean, default=False, help="Debug Output")
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def effect(self):
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if len(self.svg.selected) > 0:
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elements = self.svg.selection.filter(PathElement).values()
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if len(elements) > 0:
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for element in elements:
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#move starting element / change direction
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self.modify(element)
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#finally apply dots to visualize the result
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if self.options.visualize_result is True:
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self.visualizeFirstTwo(element)
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else:
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inkex.errormsg('Selection seems not to contain path elements. Maybe you have selected a group instead?')
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return
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else:
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inkex.errormsg('Please select some objects first.')
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return
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if __name__ == '__main__':
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ModifyStartDirection().run()
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@ -1,7 +1,7 @@
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#!/usr/bin/env python3
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#
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# Copyright (C) 2005 Aaron Spike, aaron@ekips.org
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# Modified by Ellen Wasbo, ellen@wasbo.net 2021 - number subpaths and mark start/end node with green/red dot
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# Modified by Ellen Wasbo, ellen@wasbo.net 2021 - number subpaths and mark start/end element with green/red dot
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@ -22,34 +22,34 @@ import inkex
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from inkex import TextElement, Circle
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class NumberSubpaths(inkex.EffectExtension):
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"""Mark start and end nodes with numbered dots according to the options"""
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"""Mark start and end elements with numbered dots according to the options"""
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def add_arguments(self, pars):
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pars.add_argument("--dotsize", default="10px", help="Size of the dots on the path nodes")
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pars.add_argument("--fontsize", default="10px", help="Size of node labels")
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pars.add_argument("--dotsize", default="10px", help="Size of the dots on the path elements")
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pars.add_argument("--fontsize", default="10px", help="Size of element labels")
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pars.add_argument("--showID", type=inkex.Boolean, default=False)
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def effect(self):
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if not self.svg.selected:
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raise inkex.AbortExtension("Please select an object.")
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for id, node in self.svg.selection.id_dict().items():
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self.add_dot(node)
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for element in self.svg.selection.values():
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self.add_dot(element)
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def add_dot(self, node):
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def add_dot(self, element):
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"""Add a dot label for this path element"""
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group = node.getparent().add(inkex.Group())
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group = element.getparent().add(inkex.Group())
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dot_group = group.add(inkex.Group())
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num_group = group.add(inkex.Group())
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group.transform = node.transform
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group.transform = element.transform
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styleStart = inkex.Style({'stroke': 'none', 'fill': '#00ff00'})
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styleEnd = inkex.Style({'stroke': 'none', 'fill': '#ff0000'})
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idTxt=''
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if self.options.showID==True:
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idTxt=node.get('id')+', '
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idTxt=element.get('id')+', '
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cc=0
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for sub in node.path.to_superpath():
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for sub in element.path.to_superpath():
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x=sub[0][1][0]
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y=sub[0][1][1]
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circle = dot_group.add(Circle(cx=str(x), cy=str(y), r=str(self.svg.unittouu(self.options.dotsize) / 2)))
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<name>Unwind Paths</name>
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<id>fablabchemnitz.de.unwind_paths</id>
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<param name="tab" type="notebook">
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<page name="tab_settings" gui-text="Paperfold for Inkscape">
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<page name="tab_settings" gui-text="Unwind Paths">
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<label appearance="header">Settings</label>
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<param name="keep_original" type="bool" gui-text="Keep original paths" gui-description="If selected, the original paths get deleted">false</param>
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<param name="break_apart" type="bool" gui-text="Break apart paths" gui-description="Split each path into single curve segments">false</param>
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@ -40,7 +40,7 @@ class UnwindPaths(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument('--tab')
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pars.add_argument('--keep_original', type=inkex.Boolean, default=False, help="If selected, the original paths get deleted")
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pars.add_argument('--break_apart', type=inkex.Boolean, default=False)
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pars.add_argument('--break_apart', type=inkex.Boolean, default=False, help="Split each path into single curve segments")
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pars.add_argument('--colorize', type=inkex.Boolean, default=False, help="Requires enabled 'Break apart' option")
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pars.add_argument('--extrude', type=inkex.Boolean, default=False)
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pars.add_argument('--extrude_height', type=float, default=10.000)
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@ -88,10 +88,12 @@ class UnwindPaths(inkex.EffectExtension):
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if len(self.svg.selected) > 0:
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#we break apart combined paths to get distinct contours
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breakApartPaths = []
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for element in self.svg.selection.filter(inkex.PathElement).values():
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breakApartPaths = self.breakContours(element)
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breakApartPaths.append(self.breakContours(element))
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for element in breakApartPaths:
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for breakApartPath in breakApartPaths:
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for element in breakApartPath:
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elemGroup = self.svg.get_current_layer().add(inkex.Group(id="unwinding-" + element.get('id')))
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#beginning point of the unwind band:
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