forked from Alpt/gdadin
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gdadin.py
executable file
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/
gdadin.py
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#!/usr/bin/env python
#
# Gdadin
# GUI to Draw Algorithms Designed with Inkscape
#
'''
Copyright (C) 2005 Andrea Lo Pumo aka AlpT <alpt@freaknet.org>
This source code 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 source code 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.
Please refer to the GNU Public License for more details.
You should have received a copy of the GNU Public License along with
this source code; if not, write to:
Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
'''
# TODO: use threads if possible. (Multi-core CPUs)
# TODO: check the memory available and halt the rendering when it becomes
# insufficient
# TODO: musical shapes
import inkex, T, stylevariation
import random, copy, sys
from math import sqrt
#import pdb
HSBO_PRECISION=1000.0
def weighted_random_index(weights):
'''Given a list of weights, chooses a random weighted integer
from [0, len(weights)-1]'''
weights = [ int(w*100) for w in weights ]
wsum = int(sum(weights))
wi = random.randint(1, wsum)
i=ws=0
for w in weights:
ws+=w
if wi <= ws: break
i+=1
return i
class Gdadin(inkex.Effect):
def svg_nodefromid(self, id):
return self.document.xpath('//*[@id="%s"]' % id, namespaces=inkex.NSS)[0]
def svg_prefixfromtag(self, name):
if '{' in name and '}' in name:
prefix = name.split('}')[-1]
else:
prefix = name[0]
return prefix
def svg_appendnewnode(self, node, name, attrib={}):
if not attrib or 'id' not in attrib:
attrib['id'] = self.newid(self.svg_prefixfromtag(name))
return inkex.etree.SubElement(node, name, attrib)
def svg_appendnode(self, node, child):
node.append(child)
def svg_getattr(self, node, attribname):
#Note: returns None if the attribute doesn't exist
return node.get(attribname)
def svg_setattr(self, node, attribname, value):
return node.set(attribname, value)
def svg_remattr(self, node, attribname):
del node.attrib[attribname]
def svg_remnode(self, node):
parent=node.getparent()
parent.remove(node)
def svg_subnodeslist(self, node, id=None):
return [ child for child in node if not id or child.get('id') == id ]
def svg_nodename(self, node):
return node.tag
def svg_appendnewlink(self, node, hrefid):
self.svg_appendnewnode(node, inkex.addNS('use', 'svg'),
{ inkex.addNS('href','xlink'):'#'+hrefid })
def newid(self, prefix):
#Note: 2**53 is the maximum of randint
while 1:
id = prefix+str(random.randint(0, 2**53))
if not id in self.doc_ids:
self.doc_ids[id]=1
return id
def __init__(self):
inkex.Effect.__init__(self)
self.rdepth_counter = {}
self.shape_dimension = {}
self.gdadin_shapeids = None
self.cache_nodebyname = {}
self.cache_idbyname = {}
self.shape_bbox={}
self.render_groups=[]
inkex.NSS[u'gdadin']=u'http://www.inkscape.org/namespaces/inkscape'
self.OptionParser.add_option("--shapename",
action="store", type="string",
dest="shapename", default="shape"+str(random.randint(0, 2**32-1)),
help="Shape's name")
self.OptionParser.add_option("--shapeweight",
action="store", type="float",
dest="shapeweight", default=1.0,
help="Shape's weight. Used for random calls.")
self.OptionParser.add_option("--scprdepth",
action="store", type="int",
dest="scprdepth", default=1,
help="Recursion depth (0 is infinite)")
## Hue
self.OptionParser.add_option("--scphue",
action="store", type="int",
dest="scphue", default=0,
help="Relative hue change")
self.OptionParser.add_option("--scphuefloor",
action="store", type="int",
dest="scphuefloor", default=-1,
help="Minimum hue value (<0 is disabled)")
self.OptionParser.add_option("--scphueceil",
action="store", type="int",
dest="scphueceil", default=-1,
help="Maximum hue value (<0 is disabled)")
## Saturation
self.OptionParser.add_option("--scpsat",
action="store", type="int",
dest="scpsat", default=0,
help="Relative saturation change")
self.OptionParser.add_option("--scpsatfloor",
action="store", type="int",
dest="scpsatfloor", default=-1,
help="Minimum sat value (<0 is disabled)")
self.OptionParser.add_option("--scpsatceil",
action="store", type="int",
dest="scpsatceil", default=-1,
help="Maximum sat value (<0 is disabled)")
## Brightness
self.OptionParser.add_option("--scpbri",
action="store", type="int",
dest="scpbri", default=0,
help="Relative brightness change")
self.OptionParser.add_option("--scpbrifloor",
action="store", type="int",
dest="scpbrifloor", default=-1,
help="Minimum bri value (<0 is disabled)")
self.OptionParser.add_option("--scpbriceil",
action="store", type="int",
dest="scpbriceil", default=-1,
help="Maximum bri value (<0 is disabled)")
## Opacity
self.OptionParser.add_option("--scpopa",
action="store", type="int",
dest="scpopa", default=0,
help="Relative opacity change")
self.OptionParser.add_option("--scpopafloor",
action="store", type="int",
dest="scpopafloor", default=0,
help="Minimum opa value (<0 is disabled)")
self.OptionParser.add_option("--scpopaceil",
action="store", type="int",
dest="scpopaceil", default=1000,
help="Maximum opa value (<0 is disabled)")
chars = ''.join([chr(i) for i in range(65,91)+range(48,58)])
randomstring = ''.join([random.choice(chars) for i in range(9)])
self.OptionParser.add_option("--renderseed",
action="store", type="string",
dest="renderseed", default=randomstring,
help="Random seed")
self.OptionParser.add_option("--rendermaxshapes",
action="store", type="int",
dest="rendermaxshapes", default=0,
help="Maximum number of shapes (0 is infinite)")
def effect(self):
pass
def set_gdadin_shapeids(self):
if self.gdadin_shapeids:
return self.gdadin_shapeids
defs = self.xpathSingle('/svg:svg//svg:defs')
if defs == None:
defs = self.svg_appendnewnode(self.document.getroot(), inkex.addNS('defs','svg'))
self.gdadin_shapeids = defs.find(inkex.addNS('shapeids','gdadin'))
if self.gdadin_shapeids == None:
self.gdadin_shapeids = self.svg_appendnewnode(defs, inkex.addNS('shapeids','gdadin'))
else:
self.rem_old_shapeids()
return self.gdadin_shapeids
def get_gdadin_shapeids(self):
if self.gdadin_shapeids == None:
inkex.debug('WARNING: No shape has been defined yet.')
return None
return self.gdadin_shapeids
def add_shapeid(self, sname, sid, sweight):
'''Adds the shape id `sid' in the gdadin_shapeids node'''
gs = self.get_gdadin_shapeids()
gss = self.svg_subnodeslist(gs, sname)
if not gss:
n = self.svg_appendnewnode(self.get_gdadin_shapeids(), inkex.addNS('shape','gdadin'),
{'id':sname, inkex.addNS('shapeid','gdadin'):sid,
inkex.addNS('weight','gdadin'): str(sweight)})
else:
n = gss[0]
self.svg_setattr(n, inkex.addNS('shapeid','gdadin'), self.svg_getattr(n, inkex.addNS('shapeid','gdadin')) + ';' + sid)
self.svg_setattr(n, inkex.addNS('weight','gdadin'), self.svg_getattr(n, inkex.addNS('weight','gdadin')) + ';' + str(sweight))
def get_gss(self, sname):
# Note: an exception occurs if the shape isn't found
return self.svg_subnodeslist(self.get_gdadin_shapeids(), sname)[0]
def get_allshapeid(self, sname, gss=None):
# Note: an exception occurs if the shape isn't found
if gss == None:
gss = self.get_gss(sname)
return self.svg_getattr(gss, inkex.addNS('shapeid','gdadin')).split(';')
def get_allshapeweight(self, sname, gss=None):
# Note: an exception occurs if the shape isn't found
if gss == None:
gss = self.get_gss(sname)
return [float(n) for n in self.svg_getattr(gss, inkex.addNS('weight','gdadin')).split(';')]
def rem_old_shapeids(self):
for gss in self.svg_subnodeslist(self.get_gdadin_shapeids()):
gshapeids = self.get_allshapeid(None, gss)
weights = [ str(w) for w in self.get_allshapeweight(None, gss) ]
d = dict(zip(gshapeids, weights))
def is_node_alive(id):
try:
self.svg_nodefromid(id)
return True
except:
return False
for id in d.keys():
if not is_node_alive(id):
del d[id]
if not len(d):
# the shape has been completely removed
self.svg_remnode(gss)
else:
self.svg_setattr(gss, inkex.addNS('shapeid','gdadin'), ';'.join(d.keys()))
self.svg_setattr(gss, inkex.addNS('weight','gdadin'), ';'.join(d.values()))
def init_shape_cache(self):
allnodes = self.svg_subnodeslist(self.get_gdadin_shapeids())
cache_shapenames = [self.svg_getattr(sn, 'id') for sn in allnodes]
cache_shapeids = [self.get_allshapeid(sname) for sname in cache_shapenames]
cache_shapeweights = [self.get_allshapeweight(sname) for sname in cache_shapenames]
cache_shapenodes = [[ self.svg_nodefromid(sid) for sid in sids ] for sids in cache_shapeids]
self.cache_nodebyname = dict(zip(cache_shapenames, cache_shapenodes))
self.cache_idbyname = dict(zip(cache_shapenames, cache_shapeids))
self.cache_weightbyname = dict(zip(cache_shapenames, cache_shapeweights))
def get_shapenode(self, sname):
# Note: an exception occurs if the shape isn't found
if not self.cache_nodebyname:
self.init_shape_cache()
return self.cache_nodebyname[sname][weighted_random_index(self.cache_weightbyname[sname])]
def at_least_one(self):
if len(self.selected) < 1:
inkex.debug('Nothing to do: you have to select at least one object.')
return 1
return 0
def defshape(self):
if self.at_least_one(): return
self.set_gdadin_shapeids()
# create the shape group
firstnode=self.selected.items()[0][1]
'''
if len(self.selected) == 1 and self.svg_getattr(firstnode, inkex.addNS('shape','gdadin')):
sgroup = firstnode
del self.selected[self.selected.items()[0][0]]
else:
'''
sgroup = self.svg_appendnewnode(firstnode.getparent(),
inkex.addNS('g','svg'),
{inkex.addNS('shape','gdadin'): self.options.shapename})
for id, node in self.selected.iteritems():
#approach1 self.svg_appendnode(sgroup, node)
#approach2 self.svg_appendnewlink(sgroup, id)
#approach3
cn = copy.deepcopy(node)
self.svg_setattr(cn, 'id', self.newid(self.svg_prefixfromtag(cn.tag)))
self.svg_appendnode(sgroup, cn)
# Update the shapes index
sgroupid=self.svg_getattr(sgroup, 'id')
self.add_shapeid(self.options.shapename, sgroupid, self.options.shapeweight)
def foreach_selected(self, f, args=None):
for id, node in self.selected.iteritems():
shapename = self.svg_getattr(node, inkex.addNS('shape','gdadin'))
if not shapename:
inkex.debug('WARNING: one of the selected objects isn\'t a defined shape (use Gdadin -> Define Shape). I\'ll ignore it.')
continue
if args:
f(id, node, shapename, *args)
else:
f(id, node, shapename)
def setshapecallparams(self):
if self.at_least_one(): return
self.set_gdadin_shapeids()
def setallattr(id, node, shapename):
self.svg_setattr(node, inkex.addNS('rdepth','gdadin'), str(self.options.scprdepth))
self.svg_setattr(node, inkex.addNS('hue','gdadin'), str(self.options.scphue/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('huefloor','gdadin'), str(self.options.scphuefloor/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('hueceil','gdadin'), str(self.options.scphueceil/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('sat','gdadin'), str(self.options.scpsat/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('satfloor','gdadin'), str(self.options.scpsatfloor/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('satceil','gdadin'), str(self.options.scpsatceil/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('bri','gdadin'), str(self.options.scpbri/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('brifloor','gdadin'), str(self.options.scpbrifloor/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('briceil','gdadin'), str(self.options.scpbriceil/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('opa','gdadin'), str(self.options.scpopa/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('opafloor','gdadin'), str(self.options.scpopafloor/HSBO_PRECISION))
self.svg_setattr(node, inkex.addNS('opaceil','gdadin'), str(self.options.scpopaceil/HSBO_PRECISION))
self.foreach_selected(setallattr)
def apply_hsbo(self, node, pnode, rdata):
stylevariation.apply_colmod(self, node, (rdata['hue'], rdata['sat'], rdata['bri']), rdata['opa'], rdata)
def foreach_subshape(self, rootnode, f, args=None):
for parentnode in self.svg_subnodeslist(rootnode):
childsname = self.svg_getattr(parentnode, inkex.addNS('shape','gdadin'))
if not childsname:
continue
try:
childsnode = self.get_shapenode(childsname)
except:
continue
# sys.exit('ERROR: one of the defined shape isn\'t available (has it been deleted?). Aborting.')
if args:
f(rootnode, parentnode, childsname, childsnode, *args)
else:
f(rootnode, parentnode, childsname, childsnode)
def compute_shape_bbox(self, id, node, shapename):
self.shape_bbox[id] = T.computeBBox(node)
return self.shape_bbox[id]
def bbox_diagonal_length(self, bbox):
x1,y1,x2,y2=(bbox[0], bbox[2], bbox[1], bbox[3])
return sqrt((x1-x2)**2+(y1-y2)**2)
def bbox_apply_mat(self, bbox, mat):
A=[0,0]
B=[0,0]
A[0],A[1],B[0],B[1]=(bbox[0], bbox[2], bbox[1], bbox[3])
T.applyTransformToPoint(mat, A)
T.applyTransformToPoint(mat, B)
return min(A[0], B[0]), max(A[0], B[0]), min(A[1], B[1]), max(A[1], B[1])
def check_shape_size(self, id, mat):
'''Returns 1 if the shape is too small to be seen'''
bbox = self.bbox_apply_mat(self.shape_bbox[id], mat)
if self.bbox_diagonal_length(bbox) < 1:
return 1
return 0
def adjust_document_dim(self):
bbox = T.computeBBox(self.render_groups)
width = bbox[1] - bbox[0] + 100
height = bbox[3] - bbox[2] + 100
translateX = -bbox[0]+50
translateY= -bbox[2]+50
root = self.document.getroot()
self.svg_setattr(root, 'width', str(width))
self.svg_setattr(root, 'height', str(height))
T.applyTransformToNode([[1,0,translateX],[0,1,translateY]], self.current_layer)
def add_rendergroup(self, id, node, shapename):
rgroup = self.svg_appendnewnode(node.getparent(), inkex.addNS('g','svg'),
{inkex.addNS('render','gdadin'):'1',
inkex.addNS('seed', 'gdadin'): self.options.renderseed}
)
self.svg_appendnode(rgroup, node)
self.render_groups.append(rgroup)
def render(self):
if self.at_least_one(): return
random.seed(self.options.renderseed)
self.set_gdadin_shapeids()
self.render_stack=[]
recursedata = { 'firstid' : None,
'mat' : None,
'hue' : 0.0,
'sat' : 0.0,
'bri' : 0.0,
'opa' : 0.0,
'hf' : -1,
'hc' : -1,
'sf' : -1,
'sc' : -1,
'bf' : -1,
'bc' : -1,
'of' : 0,
'oc' : 1
}
def doit(id, node, shapename, rdata):
self.compute_shape_bbox(id, node, shapename)
self.add_rendergroup(id, node, shapename)
self.render_shape(id, node, shapename, rdata)
self.foreach_selected(doit, (recursedata,))
nshapes=0
maxnshapes=int(self.options.rendermaxshapes)
while len(self.render_stack):
if maxnshapes and nshapes > maxnshapes:
inkex.debug('Maximum number of shapes reached ('+str(maxnshapes)+')')
break
args=self.render_stack.pop(0)
self._render_shape(*args)
nshapes+=1
if nshapes:
self.adjust_document_dim()
def render_shape(self, id, node, shapename, rdata):
self.render_stack.append((id, node, shapename, rdata))
def _render_shape(self, id, node, shapename, rdata):
#Note: `shapename' is not used
if rdata['firstid'] == None: rdata['firstid'] = id
## Affine transform
nmat = T.parseTransform(node.get('transform'))
if rdata['mat']:
rdata['mat'] = T.composeTransform(rdata['mat'], nmat)
T.writeTransformToNode(rdata['mat'], node)
else:
rdata['mat'] = nmat
if self.check_shape_size(rdata['firstid'], rdata['mat']):
return #ok, let's stop
self.foreach_subshape(node, self.call_shape, (rdata,))
def check_rdepth(self, parentnode):
pid = self.svg_getattr(parentnode, 'id')
try:
rdepth_max = int(self.svg_getattr(parentnode, inkex.addNS('rdepth','gdadin')))
except:
#no depth to care about
return 1 # go on
if not pid in self.rdepth_counter:
self.rdepth_counter[pid]=0
if rdepth_max and self.rdepth_counter[pid] >= rdepth_max-1:
return 0 # stop
self.rdepth_counter[pid]+=1
return 1 # go on
def call_shape(self, rootnode, parentnode, childsname, childsnode, rdata):
'''Inside `rootnode', substitute the `parentnode' with
`childsnode', but keep the transformation attribute'''
if not self.check_rdepth(parentnode):
return
nrdata = dict(rdata)
childid = self.svg_getattr(childsnode, 'id')
if childid in self.rdepth_counter:
self.rdepth_counter[self.svg_getattr(childsnode, 'id')]+=1
newchild = copy.deepcopy(childsnode)
self.svg_setattr(newchild, 'id', self.newid(self.svg_prefixfromtag(childsnode.tag)))
try:
self.svg_remattr(newchild, inkex.addNS('shape','gdadin'))
self.svg_remattr(newchild, 'transform')
except:
pass
#inkex.debug('calling ' + childsname + ' by ' + parentnode.get('id') +' in '+rootnode.get('id')+' newchild is '+newchild.get('id'))
### Calculate the various transformations.
pmat = T.parseTransform(self.svg_getattr(parentnode, 'transform'))
nrdata['mat'] = T.composeTransform(nrdata['mat'], pmat)
## Hue, Saturation, Brightness, Opacity
try:
nrdata['hue']+=float(self.svg_getattr(parentnode, inkex.addNS('hue','gdadin')))
nrdata['sat']+=float(self.svg_getattr(parentnode, inkex.addNS('sat','gdadin')))
nrdata['bri']+=float(self.svg_getattr(parentnode, inkex.addNS('bri','gdadin')))
nrdata['opa']+=float(self.svg_getattr(parentnode, inkex.addNS('opa','gdadin')))
nrdata['hf'] = float(self.svg_getattr(parentnode, inkex.addNS('huefloor','gdadin')))
nrdata['hc'] = float(self.svg_getattr(parentnode, inkex.addNS('hueceil','gdadin')))
nrdata['sf'] = float(self.svg_getattr(parentnode, inkex.addNS('satfloor','gdadin')))
nrdata['sc'] = float(self.svg_getattr(parentnode, inkex.addNS('satceil','gdadin')))
nrdata['bf'] = float(self.svg_getattr(parentnode, inkex.addNS('brifloor','gdadin')))
nrdata['bc'] = float(self.svg_getattr(parentnode, inkex.addNS('briceil','gdadin')))
nrdata['of'] = float(self.svg_getattr(parentnode, inkex.addNS('opafloor','gdadin')))
nrdata['oc'] = float(self.svg_getattr(parentnode, inkex.addNS('opaceil','gdadin')))
except:
pass
###
if nrdata['hue'] or nrdata['sat'] or nrdata['bri'] or nrdata['opa']:
self.apply_hsbo(newchild, parentnode, nrdata)
hsbo = 1
else:
hsbo = 0
# xlinkify
if not hsbo:
for sn in self.svg_subnodeslist(newchild):
if not self.svg_getattr(sn, inkex.addNS('shape','gdadin')):
self.xlinkify(newchild, sn)
self.svg_appendnode(rootnode.getparent(), newchild)
if self.svg_getattr(rootnode, 'id') != nrdata['firstid']:
self.svg_remnode(parentnode)
# Recurse!
self.render_shape(None, newchild, None, nrdata)
def xlinkify(self, node, subnode):
id = self.svg_getattr(subnode, 'id')
self.svg_appendnewlink(node, id)
self.svg_remnode(subnode)
if __name__ == '__main__':
e = Gdadin()
e.affect()