FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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More bugfixes in Create Links extension, validated by larger SVGs

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This commit is contained in:
Mario Voigt 2021-04-14 23:52:32 +02:00
parent 89bf906191
commit db05a9aef3
2 changed files with 78 additions and 67 deletions
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3
extensions/fablabchemnitz/create_links.inx
View File

@ -52,7 +52,8 @@
<param name="keep_selected" type="bool" gui-text="Keep selected elements">false</param> <param name="keep_selected" type="bool" gui-text="Keep selected elements">false</param>
<param name="no_convert" type="bool" gui-text="Do not create output path(s) (cosmetic style only)">false</param> <param name="no_convert" type="bool" gui-text="Do not create output path(s) (cosmetic style only)">false</param>
<param name="breakapart" type="bool" gui-text="Break apart output path(s) into segments" gui-description="Performs CTRL + SHIFT + K to break the new output path into it's parts">false</param> <param name="breakapart" type="bool" gui-text="Break apart output path(s) into segments" gui-description="Performs CTRL + SHIFT + K to break the new output path into it's parts">false</param>
<param name="show_info" type="bool" gui-text="Print some length, pattern and filtering information" gui-description="Warning: might freeze InkScape forever if you have a lot of nodes because we create too much print output. Use for debugging only!">false</param> <param name="show_info" type="bool" gui-text="Print length, pattern and filtering information/errors" gui-description="Warning: might freeze Inkscape forever if you have a lot of nodes because we create too much print output. Use for debugging only!">false</param>
<param name="skip_errors" type="bool" gui-text="Skip errors">false</param>
</vbox> </vbox>
</hbox> </hbox>
</page> </page>

132
extensions/fablabchemnitz/create_links.py
View File

@ -60,29 +60,33 @@ class LinksCreator(inkex.EffectExtension):
self.arg_parser.add_argument("--no_convert", type=inkex.Boolean, default=False, help="Do not create segments (cosmetic gaps only)") self.arg_parser.add_argument("--no_convert", type=inkex.Boolean, default=False, help="Do not create segments (cosmetic gaps only)")
self.arg_parser.add_argument("--breakapart", type=inkex.Boolean, default=False, help="Performs CTRL + SHIFT + K to break the new output path into it's parts") self.arg_parser.add_argument("--breakapart", type=inkex.Boolean, default=False, help="Performs CTRL + SHIFT + K to break the new output path into it's parts")
self.arg_parser.add_argument("--show_info", type=inkex.Boolean, default=False, help="Print some length and pattern information") self.arg_parser.add_argument("--show_info", type=inkex.Boolean, default=False, help="Print some length and pattern information")
self.arg_parser.add_argument("--skip_errors", type=inkex.Boolean, default=False, help="Skip errors")
def breakContours(self, node, breakNodes = None): #this does the same as "CTRL + SHIFT + K" def breakContours(self, node, breakNodes = None): #this does the same as "CTRL + SHIFT + K"
if breakNodes == None: if breakNodes == None:
breakNodes = [] breakNodes = []
parent = node.getparent() if node.tag == inkex.addNS('path','svg'):
idx = parent.index(node) parent = node.getparent()
idSuffix = 0 idx = parent.index(node)
raw = node.path.to_arrays() idSuffix = 0
subPaths, prev = [], 0 raw = node.path.to_arrays()
for i in range(len(raw)): # Breaks compound paths into simple paths subPaths, prev = [], 0
if raw[i][0] == 'M' and i != 0: for i in range(len(raw)): # Breaks compound paths into simple paths
subPaths.append(raw[prev:i]) if raw[i][0] == 'M' and i != 0:
prev = i subPaths.append(raw[prev:i])
subPaths.append(raw[prev:]) prev = i
for subpath in subPaths: subPaths.append(raw[prev:])
replacedNode = copy.copy(node) for subpath in subPaths:
oldId = replacedNode.get('id') replacedNode = copy.copy(node)
replacedNode.set('d', CubicSuperPath(subpath)) oldId = replacedNode.get('id')
replacedNode.set('id', oldId + str(idSuffix).zfill(5)) replacedNode.set('d', CubicSuperPath(subpath))
parent.insert(idx, replacedNode) replacedNode.set('id', oldId + str(idSuffix).zfill(5))
idSuffix += 1 parent.insert(idx, replacedNode)
breakNodes.append(replacedNode) idSuffix += 1
parent.remove(node) breakNodes.append(replacedNode)
parent.remove(node)
for child in node:
self.breakContours(child, breakNodes)
return breakNodes return breakNodes
def effect(self): def effect(self):
@ -115,7 +119,7 @@ class LinksCreator(inkex.EffectExtension):
if self.options.length_filter is True: if self.options.length_filter is True:
if stotal < self.svg.unittouu(str(self.options.length_filter_value) + self.options.length_filter_unit): if stotal < self.svg.unittouu(str(self.options.length_filter_value) + self.options.length_filter_unit):
if self.options.show_info is True: if self.options.show_info is True:
inkex.utils.debug("node " + node.get('id') + " is shorter than minimum allowed length of {:1.3f} {}. Path length is {:1.3f} {}".format(self.options.length_filter_value, self.options.length_filter_unit, stotal, self.options.creationunit)) inkex.errormsg("node " + node.get('id') + " is shorter than minimum allowed length of {:1.3f} {}. Path length is {:1.3f} {}".format(self.options.length_filter_value, self.options.length_filter_unit, stotal, self.options.creationunit))
return #skip this loop iteration return #skip this loop iteration
if self.options.creationunit == "percent": if self.options.creationunit == "percent":
@ -124,54 +128,60 @@ class LinksCreator(inkex.EffectExtension):
length_link = self.svg.unittouu(str(self.options.length_link) + self.options.creationunit) length_link = self.svg.unittouu(str(self.options.length_link) + self.options.creationunit)
dashes = [] #central dashes array dashes = [] #central dashes array
dashes.append(((stotal - length_link * self.options.link_count) / self.options.link_count) - 2 * length_link * (self.options.link_multiplicator))
dashes.append(length_link)
for i in range(0, self.options.link_multiplicator):
dashes.append(length_link) #stroke (=gap)
dashes.append(length_link) #gap
if self.options.creationtype == "use_existing" and self.options.no_convert is True:
inkex.errormsg("Nothing to do. Please select another creation method or disable cosmetic style output paths.")
return
if self.options.creationtype == "entered_values": if self.options.creationtype == "entered_values":
dashes.append(((stotal - length_link * self.options.link_count) / self.options.link_count) - 2 * length_link * (self.options.link_multiplicator))
dashes.append(length_link)
for i in range(0, self.options.link_multiplicator):
dashes.append(length_link) #stroke (=gap)
dashes.append(length_link) #gap
#validate dashes. May not be negative. Otherwise Inkscape will freeze forever. Reason: rendering issue
if any(dash < 0 for dash in dashes) == True:
inkex.errormsg("node " + node.get('id') + ": Error! Dash array may not contain negative numbers: " + ' '.join(format(dash, "1.3f") for dash in dashes) + ". Path skipped. Maybe it's too short. Adjust your link count, multiplicator and length accordingly, or set to unit '%'") if self.options.show_info is True else None
return False if self.options.skip_errors is True else exit(1)
if self.options.creationunit == "percent": if self.options.creationunit == "percent":
stroke_dashoffset = self.options.link_offset / 100.0 stroke_dashoffset = self.options.link_offset / 100.0
else: else:
stroke_dashoffset = self.svg.unittouu(str(self.options.link_offset) + self.options.creationunit) stroke_dashoffset = self.svg.unittouu(str(self.options.link_offset) + self.options.creationunit)
if self.options.creationtype == "use_existing": if self.options.creationtype == "use_existing":
if self.options.no_convert is True:
inkex.errormsg("node " + node.get('id') + ": Nothing to do. Please select another creation method or disable cosmetic style output paths.") if self.options.show_info is True else None
return False if self.options.skip_errors is True else exit(1)
stroke_dashoffset = 0 stroke_dashoffset = 0
style = node.style style = node.style
if 'stroke-dashoffset' in style: if 'stroke-dashoffset' in style:
stroke_dashoffset = style['stroke-dashoffset'] stroke_dashoffset = style['stroke-dashoffset']
try: try:
floats = [float(dash) for dash in re.findall(r"[-+]?\d*\.\d+|\d+", style['stroke-dasharray'])] floats = [float(dash) for dash in re.findall(r"[+]?\d*\.\d+|\d+", style['stroke-dasharray'])] #allow only positive values
if len(floats) > 0: if len(floats) > 0:
dashes = floats #overwrite previously calculated values with custom input dashes = floats #overwrite previously calculated values with custom input
else: else:
raise ValueError raise ValueError
except: except:
inkex.errormsg("no dash style to continue with.") inkex.errormsg("node " + node.get('id') + ": No dash style to continue with.") if self.options.show_info is True else None
return return False if self.options.skip_errors is True else exit(1)
if self.options.creationtype == "custom_dashpattern": if self.options.creationtype == "custom_dashpattern":
stroke_dashoffset = self.options.custom_dashoffset_value stroke_dashoffset = self.options.custom_dashoffset_value
try: try:
floats = [float(dash) for dash in re.findall(r"[-+]?\d*\.\d+|\d+", self.options.custom_dasharray_value)] floats = [float(dash) for dash in re.findall(r"[+]?\d*\.\d+|\d+", self.options.custom_dasharray_value)] #allow only positive values
if len(floats) > 0: if len(floats) > 0:
dashes = floats #overwrite previously calculated values with custom input dashes = floats #overwrite previously calculated values with custom input
else: else:
raise ValueError raise ValueError
except: except:
inkex.errormsg("Error in custom dasharray string (might be empty or does not contain any numbers).") inkex.errormsg("node " + node.get('id') + ": Error in custom dasharray string (might be empty or does not contain any numbers).") if self.options.show_info is True else None
return return False if self.options.skip_errors is True else exit(1)
#assign stroke dasharray from entered values, existing style or custom dashpattern
stroke_dasharray = ' '.join(format(dash, "1.3f") for dash in dashes) stroke_dasharray = ' '.join(format(dash, "1.3f") for dash in dashes)
# check if the node has a style attribute. If not we create a blank one with a black stroke and without fill # check if the node has a style attribute. If not we create a blank one with a black stroke and without fill
style = None style = None
default_stroke_width = '1px'
default_stroke = '#000000'
if node.attrib.has_key('style'): if node.attrib.has_key('style'):
style = node.get('style') style = node.get('style')
if style.endswith(';') is False: if style.endswith(';') is False:
@ -190,34 +200,39 @@ class LinksCreator(inkex.EffectExtension):
declarations[i] = prop + ':{};'.format(stroke_dashoffset) declarations[i] = prop + ':{};'.format(stroke_dashoffset)
node.set('style', ';'.join(declarations)) #apply new style to node node.set('style', ';'.join(declarations)) #apply new style to node
#if has style attribute but the style attribute does not contain dasharray or dashoffset yet #if has style attribute but the style attribute does not contain stroke, stroke-dasharray or stroke-dashoffset yet
style = node.style style = node.style
if re.search('fill:(.*?)(;|$)', str(style)) is None:
style += 'fill:none;'
if re.search('(;|^)stroke:(.*?)(;|$)', str(style)) is None: #if "stroke" is None, add one. We need to distinguish because there's also attribute "-inkscape-stroke" that's why we check starting with ^ or ;
style += 'stroke:{};'.format(default_stroke)
if not 'stroke-width' in style:
style += 'stroke-width:{};'.format(default_stroke_width)
if not 'stroke-dasharray' in style: if not 'stroke-dasharray' in style:
style = style + 'stroke-dasharray:{};'.format(stroke_dasharray) style += 'stroke-dasharray:{};'.format(stroke_dasharray)
if not 'stroke-dashoffset' in style: if not 'stroke-dashoffset' in style:
style = style + 'stroke-dashoffset:{};'.format(stroke_dashoffset) style += 'stroke-dashoffset:{};'.format(stroke_dashoffset)
node.set('style', style) node.set('style', style)
else: else:
style = 'fill:none;stroke:#000000;stroke-width:1px;stroke-dasharray:{};stroke-dashoffset:{};'.format(stroke_dasharray, stroke_dashoffset) style = 'fill:none;stroke:{};stroke-width:{};stroke-dasharray:{};stroke-dashoffset:{};'.format(default_stroke, default_stroke_width, stroke_dasharray, stroke_dashoffset)
node.set('style', style) node.set('style', style)
# Print some info about values # Print some info about values
if self.options.show_info is True: if self.options.show_info is True:
inkex.utils.debug("node " + node.get('id')) inkex.errormsg("node " + node.get('id') + ":")
if self.options.creationunit == "percent": if self.options.creationunit == "percent":
inkex.utils.debug("total path length = {:1.3f} {}".format(stotal, self.svg.unit)) #show length, converted in selected unit inkex.errormsg(" * total path length = {:1.3f} {}".format(stotal, self.svg.unit)) #show length, converted in selected unit
inkex.utils.debug("(calculated) offset: {:1.3f} %".format(stroke_dashoffset)) inkex.errormsg(" * (calculated) offset: {:1.3f} %".format(stroke_dashoffset))
if self.options.creationtype == "entered_values": if self.options.creationtype == "entered_values":
inkex.utils.debug("(calculated) gap length: {:1.3f} %".format(length_link)) inkex.errormsg(" * (calculated) gap length: {:1.3f} %".format(length_link))
else: else:
inkex.utils.debug("total path length = {:1.3f} {} ({:1.3f} {})".format(self.svg.uutounit(stotal, self.options.creationunit), self.options.creationunit, stotal, self.svg.unit)) #show length, converted in selected unit inkex.errormsg(" * total path length = {:1.3f} {} ({:1.3f} {})".format(self.svg.uutounit(stotal, self.options.creationunit), self.options.creationunit, stotal, self.svg.unit)) #show length, converted in selected unit
inkex.utils.debug("(calculated) offset: {:1.3f} {}".format(self.svg.uutounit(stroke_dashoffset, self.options.creationunit), self.options.creationunit)) inkex.errormsg(" * (calculated) offset: {:1.3f} {}".format(self.svg.uutounit(stroke_dashoffset, self.options.creationunit), self.options.creationunit))
if self.options.creationtype == "entered_values": if self.options.creationtype == "entered_values":
inkex.utils.debug("(calculated) gap length: {:1.3f} {}".format(length_link, self.options.creationunit)) inkex.errormsg(" * (calculated) gap length: {:1.3f} {}".format(length_link, self.options.creationunit))
if self.options.creationtype == "entered_values": if self.options.creationtype == "entered_values":
inkex.utils.debug("total gaps = {}".format(self.options.link_count)) inkex.errormsg(" * total gaps = {}".format(self.options.link_count))
inkex.utils.debug("(calculated) dash/gap pattern: {} ({})".format(stroke_dasharray, self.svg.unit)) inkex.errormsg(" * (calculated) dash/gap pattern: {} ({})".format(stroke_dasharray, self.svg.unit))
inkex.utils.debug("--------------------------------------------------------------------------------------------------")
# Conversion step (split cosmetic path into real segments) # Conversion step (split cosmetic path into real segments)
if self.options.no_convert is False: if self.options.no_convert is False:
@ -263,20 +278,15 @@ class LinksCreator(inkex.EffectExtension):
breakApartGroup = nodeParent.add(inkex.Group()) breakApartGroup = nodeParent.add(inkex.Group())
for breakOutputNode in breakOutputNodes: for breakOutputNode in breakOutputNodes:
breakApartGroup.append(breakOutputNode) breakApartGroup.append(breakOutputNode)
#inkex.utils.debug(replacedNode.get('id')) #inkex.errormsg(replacedNode.get('id'))
#self.svg.selection.set(replacedNode.get('id')) #update selection to split paths segments (does not work, so commented out) #self.svg.selection.set(replacedNode.get('id')) #update selection to split paths segments (does not work, so commented out)
if len(self.svg.selected) > 0: if len(self.svg.selected) > 0:
pathNodes = self.svg.selection.filter(PathElement).values() for node in self.svg.selection.values():
if len(pathNodes) > 0: #at first we need to break down combined nodes to single path, otherwise dasharray cannot properly be applied
for node in pathNodes: breakInputNodes = self.breakContours(node)
#at first we need to break down combined nodes to single path, otherwise dasharray cannot properly be applied for breakInputNode in breakInputNodes:
breakInputNodes = self.breakContours(node) createLinks(breakInputNode)
for breakInputNode in breakInputNodes:
createLinks(breakInputNode)
else:
inkex.errormsg('Selection does not contain any paths to work with. Maybe you need to convert objects to paths before.')
return
else: else:
inkex.errormsg('Please select some paths first.') inkex.errormsg('Please select some paths first.')
return return