![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index 7f95ea22742dc907ad1a7188eb76dbc2c745271b..26a23dc0a8baf55788fc3cb319ee89bbaec0250c 100755 (executable)
"""
import sys, inkex, os, re, simplepath, cubicsuperpath
from ffgeom import *
-from numpy import *
-from numpy.linalg import *
+try:
+ from numpy import *
+ from numpy.linalg import *
+except:
+ inkex.debug("Failed to import the numpy or numpy.linalg modules. These modules are required by this extension. Please install them and try again. On a Debian-like system this can be done with the command, sudo apt-get install python-numpy.")
+ sys.exit()
uuconv = {'in':90.0, 'pt':1.25, 'px':1, 'mm':3.5433070866, 'cm':35.433070866, 'pc':15.0}
def unittouu(string):
class Project(inkex.Effect):
def __init__(self):
- inkex.Effect.__init__(self)
+ inkex.Effect.__init__(self)
def effect(self):
if len(self.options.ids) < 2:
inkex.debug("Requires two selected paths. The second must be exactly four nodes long.")
- exit()
+ sys.exit()
#obj is selected second
obj = self.selected[self.options.ids[0]]
envelope = self.selected[self.options.ids[1]]
- if (obj.tagName == 'path' or obj.tagName == 'g') and envelope.tagName == 'path':
- path = cubicsuperpath.parsePath(envelope.attributes.getNamedItem('d').value)
+ if (obj.tag == inkex.addNS('path','svg') or obj.tag == inkex.addNS('g','svg')) and envelope.tag == inkex.addNS('path','svg'):
+ path = cubicsuperpath.parsePath(envelope.get('d'))
dp = zeros((4,2), dtype=float64)
- for i in range(4):
+ for i in range(4):
dp[i][0] = path[0][i][1][0]
- dp[i][1] = path[0][i][1][1]
+ dp[i][1] = path[0][i][1][1]
#query inkscape about the bounding box of obj
q = {'x':0,'y':0,'width':0,'height':0}
file = self.args[-1]
id = self.options.ids[0]
for query in q.keys():
- f = os.popen("inkscape --query-%s --query-id=%s %s" % (query,id,file))
+ _,f,err = os.popen3('inkscape --query-%s --query-id=%s "%s"' % (query,id,file))
q[query] = float(f.read())
f.close()
+ err.close()
sp = array([[q['x'], q['y']+q['height']],[q['x'], q['y']],[q['x']+q['width'], q['y']],[q['x']+q['width'], q['y']+q['height']]], dtype=float64)
- solmatrix = zeros((8,8), dtype=float64)
- free_term = zeros((8), dtype=float64)
- for i in (0,1,2,3):
- solmatrix[i][0] = sp[i][0]
- solmatrix[i][1] = sp[i][1]
- solmatrix[i][2] = 1
- solmatrix[i][6] = -dp[i][0]*sp[i][0]
- solmatrix[i][7] = -dp[i][0]*sp[i][1]
- solmatrix[i+4][3] = sp[i][0]
- solmatrix[i+4][4] = sp[i][1]
- solmatrix[i+4][5] = 1
- solmatrix[i+4][6] = -dp[i][1]*sp[i][0]
- solmatrix[i+4][7] = -dp[i][1]*sp[i][1]
- free_term[i] = dp[i][0]
- free_term[i+4] = dp[i][1]
-
- res = solve(solmatrix, free_term)
- projmatrix = array([[res[0],res[1],res[2]],[res[3],res[4],res[5]],[res[6],res[7],1.0]],dtype=float64)
- if obj.tagName == "path":
- self.process_path(obj,projmatrix)
- if obj.tagName == "g":
- self.process_group(obj,projmatrix)
+ solmatrix = zeros((8,8), dtype=float64)
+ free_term = zeros((8), dtype=float64)
+ for i in (0,1,2,3):
+ solmatrix[i][0] = sp[i][0]
+ solmatrix[i][1] = sp[i][1]
+ solmatrix[i][2] = 1
+ solmatrix[i][6] = -dp[i][0]*sp[i][0]
+ solmatrix[i][7] = -dp[i][0]*sp[i][1]
+ solmatrix[i+4][3] = sp[i][0]
+ solmatrix[i+4][4] = sp[i][1]
+ solmatrix[i+4][5] = 1
+ solmatrix[i+4][6] = -dp[i][1]*sp[i][0]
+ solmatrix[i+4][7] = -dp[i][1]*sp[i][1]
+ free_term[i] = dp[i][0]
+ free_term[i+4] = dp[i][1]
+
+ res = solve(solmatrix, free_term)
+ projmatrix = array([[res[0],res[1],res[2]],[res[3],res[4],res[5]],[res[6],res[7],1.0]],dtype=float64)
+ if obj.tag == inkex.addNS("path",'svg'):
+ self.process_path(obj,projmatrix)
+ if obj.tag == inkex.addNS("g",'svg'):
+ self.process_group(obj,projmatrix)
def process_group(self,group,m):
- for node in group.childNodes:
- if node.nodeType==node.ELEMENT_NODE:
- if node.tagName == 'path':
- self.process_path(node,m)
- if node.tagName == 'g':
- self.process_group(node,m)
-
+ for node in group:
+ if node.tag == inkex.addNS('path','svg'):
+ self.process_path(node,m)
+ if node.tag == inkex.addNS('g','svg'):
+ self.process_group(node,m)
+
def process_path(self,path,m):
- d = path.attributes.getNamedItem('d')
- p = cubicsuperpath.parsePath(d.value)
+ d = path.get('d')
+ p = cubicsuperpath.parsePath(d)
for subs in p:
for csp in subs:
csp[0] = self.project_point(csp[0],m)
csp[1] = self.project_point(csp[1],m)
csp[2] = self.project_point(csp[2],m)
- d.value = cubicsuperpath.formatPath(p)
+ path.set('d',cubicsuperpath.formatPath(p))
def project_point(self,p,m):
- x = p[0]
- y = p[1]
- return [(x*m[0][0] + y*m[0][1] + m[0][2])/(x*m[2][0]+y*m[2][1]+m[2][2]),(x*m[1][0] + y*m[1][1] + m[1][2])/(x*m[2][0]+y*m[2][1]+m[2][2])]
+ x = p[0]
+ y = p[1]
+ return [(x*m[0][0] + y*m[0][1] + m[0][2])/(x*m[2][0]+y*m[2][1]+m[2][2]),(x*m[1][0] + y*m[1][1] + m[1][2])/(x*m[2][0]+y*m[2][1]+m[2][2])]
e = Project()
e.affect()
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99