File: //usr/share/inkscape/extensions/pathscatter.pyc
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Copyright (C) 2006 Jean-Francois Barraud, barraud@math.univ-lille1.fr
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
barraud@math.univ-lille1.fr
Quick description:
This script deforms an object (the pattern) along other paths (skeletons)...
The first selected object is the pattern
the last selected ones are the skeletons.
Imagine a straight horizontal line L in the middle of the bounding box of the pattern.
Consider the normal bundle of L: the collection of all the vertical lines meeting L.
Consider this as the initial state of the plane; in particular, think of the pattern
as painted on these lines.
Now move and bend L to make it fit a skeleton, and see what happens to the normals:
they move and rotate, deforming the pattern.
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This function receives a component of a 'cubicsuperpath' and returns two things:
The path subdivided in many straight segments, and an array containing the length of each segment.
We could work with bezier path as well, but bezier arc lengths are (re)computed for each point
in the deformed object. For complex paths, this might take a while.
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d3 d d/ �| j j d4 d d d d d d5 d d6 �d S(7 Ns --titles -ns --noffsett actiont storet typet floatt destt noffsett defaultg t helps
normal offsets -ts --toffsett toffsets tangential offsets -gs --grouppickt inkboolt grouppicks6 if pattern is a group then randomly pick group memberss -ms
--pickmodet stringt pickmodet rands. group pick mode (rand=random seq=sequentially)s -fs --followt follows# choose between wave or snake effects -ss --stretchR s( repeat the path to fit deformer's lengths -ps --spacet spaces -vs
--verticalt verticals reference path is verticals -ds --duplicatet duplicates$ duplicate pattern before deformations -cs
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Recieves an arc length l, and returns the index of the segment in self.skelcomp
containing the corresponding point, to gether with the position of the point on this segment.
If the deformer is closed, do computations modulo the toal length.
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receives a length, and returns the coresponding point and tangent of self.skelcomp
if follow is set to false, returns only the translation
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