From f3d3661f257ff23dc3b673e926afe4dc6547d59a Mon Sep 17 00:00:00 2001 From: njh Date: Tue, 18 Apr 2006 07:04:05 +0000 Subject: [PATCH] Added measure extension. --- ChangeLog | 5 ++ share/extensions/Makefile.am | 2 + share/extensions/measure.inx | 16 ++++++ share/extensions/measure.py | 106 +++++++++++++++++++++++++++++++++++ 4 files changed, 129 insertions(+) create mode 100644 share/extensions/measure.inx create mode 100644 share/extensions/measure.py diff --git a/ChangeLog b/ChangeLog index 9cd7a9ed6..a21ad658a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2006-04-18 njh + * share/extensions/measure.inx, share/extensions/measure.py, share/extensions/Makefile.am + + Added the measure extension that marks lengths onto paths. + 2006-04-17 MenTaLguY * src/application/editor.cpp, src/arc-context.cpp, src/conn-avoid-ref.cpp, diff --git a/share/extensions/Makefile.am b/share/extensions/Makefile.am index a75af5583..0fe2b6cd1 100644 --- a/share/extensions/Makefile.am +++ b/share/extensions/Makefile.am @@ -49,6 +49,7 @@ extensions = \ fig2svg.sh \ cspsubdiv.py \ flatten.py \ + measure.py \ gimp_xcf.py otherstuff = @@ -93,6 +94,7 @@ modules = \ dxf_outlines.inx \ fig_input.inx \ flatten.inx \ + measure.inx \ gimp_xcf.inx extension_SCRIPTS = \ diff --git a/share/extensions/measure.inx b/share/extensions/measure.inx new file mode 100644 index 000000000..820ba8fa7 --- /dev/null +++ b/share/extensions/measure.inx @@ -0,0 +1,16 @@ + + <_name>Measure paths + com.njhurst.filter.measure_length + measure.py + inkex.py + 20 + + path + + + + + + diff --git a/share/extensions/measure.py b/share/extensions/measure.py new file mode 100644 index 000000000..e8089ca05 --- /dev/null +++ b/share/extensions/measure.py @@ -0,0 +1,106 @@ +#!/usr/bin/env python +''' +Copyright (C) 2006 Nathan Hurst +Copyright (C) 2005 Aaron Spike, aaron@ekips.org + +This program 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 program 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. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +''' +import inkex, simplestyle, simplepath,sys,cubicsuperpath, bezmisc + +def numsegs(csp): + return sum([len(p)-1 for p in csp]) +def interpcoord(v1,v2,p): + return v1+((v2-v1)*p) +def interppoints(p1,p2,p): + return [interpcoord(p1[0],p2[0],p),interpcoord(p1[1],p2[1],p)] +def pointdistance((x1,y1),(x2,y2)): + return math.sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2)) +def bezlenapprx(sp1, sp2): + return pointdistance(sp1[1], sp1[2]) + pointdistance(sp1[2], sp2[0]) + pointdistance(sp2[0], sp2[1]) +def tpoint((x1,y1), (x2,y2), t = 0.5): + return [x1+t*(x2-x1),y1+t*(y2-y1)] +def cspbezsplit(sp1, sp2, t = 0.5): + m1=tpoint(sp1[1],sp1[2],t) + m2=tpoint(sp1[2],sp2[0],t) + m3=tpoint(sp2[0],sp2[1],t) + m4=tpoint(m1,m2,t) + m5=tpoint(m2,m3,t) + m=tpoint(m4,m5,t) + return [[sp1[0][:],sp1[1][:],m1], [m4,m,m5], [m3,sp2[1][:],sp2[2][:]]] +def cspbezsplitatlength(sp1, sp2, l = 0.5, tolerance = 0.001): + bez = (sp1[1][:],sp1[2][:],sp2[0][:],sp2[1][:]) + t = bezmisc.beziertatlength(bez, l, tolerance) + return cspbezsplit(sp1, sp2, t) +def cspseglength(sp1,sp2, tolerance = 0.001): + bez = (sp1[1][:],sp1[2][:],sp2[0][:],sp2[1][:]) + return bezmisc.bezierlength(bez, tolerance) +def csplength(csp): + total = 0 + lengths = [] + for sp in csp: + lengths.append([]) + for i in xrange(1,len(sp)): + l = cspseglength(sp[i-1],sp[i]) + lengths[-1].append(l) + total += l + return lengths, total + +class Length(inkex.Effect): + def __init__(self): + inkex.Effect.__init__(self) + self.OptionParser.add_option("-f", "--fontsize", + action="store", type="string", + dest="fontsize", default="20", + help="Size of node label numbers") + self.OptionParser.add_option("-o", "--offset", + action="store", type="string", + dest="offset", default="-4", + help="The distance above the curve") + def effect(self): + for id, node in self.selected.iteritems(): + if node.tagName == 'path': + self.group = self.document.createElement('svg:g') + node.parentNode.appendChild(self.group) + + try: + t = node.attributes.getNamedItem('transform').value + self.group.setAttribute('transform', t) + except AttributeError: + pass + + a =[] + p = cubicsuperpath.parsePath(node.attributes.getNamedItem('d').value) + num = 1 + slengths, stotal = csplength(p) + self.addTextOnPath(self.group,0, 0,str(stotal), id, self.options.offset) + + + def addTextOnPath(self,node,x,y,text, id,dy=0): + new = self.document.createElement('svg:text') + tp = self.document.createElement('svg:textPath') + s = {'font-size': self.options.fontsize, 'fill-opacity': '1.0', 'stroke': 'none', + 'font-weight': 'normal', 'font-style': 'normal', 'fill': '#000000'} + new.setAttribute('style', simplestyle.formatStyle(s)) + new.setAttribute('x', str(x)) + new.setAttribute('y', str(y)) + tp.setAttributeNS('http://www.w3.org/1999/xlink','xlink:href', '#'+id) + tp.setAttribute('startOffset', "50%") + #tp.setAttribute('dy', dy) # dubious merit + new.appendChild(tp) + tp.appendChild(self.document.createTextNode(str(text))) + node.appendChild(new) + +e = Length() +e.affect() -- 2.30.2