From dc3b051aeceb6f7810213f1ea9172e30e38a6bf1 Mon Sep 17 00:00:00 2001 From: johanengelen Date: Fri, 24 Nov 2006 21:25:42 +0000 Subject: [PATCH] Deleted the Wavy extension, because functionplotter provides the same functionality. --- share/extensions/wavy.inx | 20 ------ share/extensions/wavy.py | 133 -------------------------------------- 2 files changed, 153 deletions(-) delete mode 100644 share/extensions/wavy.inx delete mode 100755 share/extensions/wavy.py diff --git a/share/extensions/wavy.inx b/share/extensions/wavy.inx deleted file mode 100644 index 2dd34d9b0..000000000 --- a/share/extensions/wavy.inx +++ /dev/null @@ -1,20 +0,0 @@ - - <_name>Wave Plotter - org.ekips.filter.wavy - wavy.py - inkex.py - 4.0 - 8 - sin(x) - true - cos(x) - - rect - - - - - - diff --git a/share/extensions/wavy.py b/share/extensions/wavy.py deleted file mode 100755 index c74e7d71e..000000000 --- a/share/extensions/wavy.py +++ /dev/null @@ -1,133 +0,0 @@ -#!/usr/bin/env python -''' -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 - - - -drawwave() was translated into python from the postscript version -described at http://www.ghostscript.com/person/toby/ and located -at http://www.telegraphics.com.au/sw/sine.ps . -http://www.tinaja.com/glib/bezsine.pdf shows another method for -approximating sine with beziers. - -The orginal postscript version displayed the following copyright -notice and was released under the terms of the GPL: -Copyright (C) 2001-3 Toby Thain, toby@telegraphics.com.au -''' -import inkex, simplepath, simplestyle -from math import * -from random import * - -def drawwave(samples, periods, width, height, left, top, - fx = "sin(x)", fpx = "cos(x)", fponum = True): - - # step is the distance between nodes on x - step = 2*pi / samples - third = step / 3.0 - - # coords and scales based on the source rect - xoff = left - yoff = top + (height / 2) - scalex = width / (2*pi * periods) - scaley = height / 2 - procx = lambda x: x * scalex + xoff - procy = lambda y: y * scaley + yoff - - # functions specified by the user - if fx != "": - f = eval('lambda x: ' + fx) - if fpx != "": - fp = eval('lambda x: ' + fpx) - - # initialize function and derivative for 0; - # they are carried over from one iteration to the next, to avoid extra function calculations - y0 = f(0) - if fponum == True: # numerical derivative, using 0.001*step as the small differential - d0 = (f(0 + 0.001*step) - y0)/(0.001*step) - else: # derivative given by the user - d0 = fp(0) - - a = [] # path array - a.append(['M',[procx(0.0), procy(y0)]]) # initial moveto - - for i in range(int(samples * periods)): - x = i * step - y1 = f(x + step) - if fponum == True: # numerical derivative - d1 = (y1 - f(x + step - 0.001*step))/(0.001*step) - else: # derivative given by the user - d1 = fp(x + step) - # create curve - a.append(['C',[procx(x + third), procy(y0 + (d0 * third)), - procx(x + (step - third)), procy(y1 - (d1 * third)), - procx(x + step), procy(y1)]]) - y0 = y1 # next segment's y0 is this segment's y1 - d0 = d1 # we assume the function is smooth everywhere, so carry over the derivative too - - return a - -class Wavy(inkex.Effect): - def __init__(self): - inkex.Effect.__init__(self) - self.OptionParser.add_option("-p", "--periods", - action="store", type="float", - dest="periods", default=4.0, - help="Periods (2*Pi each)") - self.OptionParser.add_option("-s", "--samples", - action="store", type="int", - dest="samples", default=8, - help="Samples per period") - self.OptionParser.add_option("--fofx", - action="store", type="string", - dest="fofx", default="sin(x)", - help="f(x) for plotting") - self.OptionParser.add_option("--fponum", - action="store", type="inkbool", - dest="fponum", default=True, - help="Calculate the first derivative numerically") - self.OptionParser.add_option("--fpofx", - action="store", type="string", - dest="fpofx", default="cos(x)", - help="f'(x) for plotting") - def effect(self): - for id, node in self.selected.iteritems(): - if node.tagName == 'rect': - new = self.document.createElement('svg:path') - x = float(node.attributes.getNamedItem('x').value) - y = float(node.attributes.getNamedItem('y').value) - w = float(node.attributes.getNamedItem('width').value) - h = float(node.attributes.getNamedItem('height').value) - - s = node.attributes.getNamedItem('style').value - new.setAttribute('style', s) - try: - t = node.attributes.getNamedItem('transform').value - new.setAttribute('transform', t) - except AttributeError: - pass - new.setAttribute('d', simplepath.formatPath( - drawwave(self.options.samples, - self.options.periods, - w,h,x,y, - self.options.fofx, - self.options.fpofx, - self.options.fponum))) - node.parentNode.appendChild(new) - node.parentNode.removeChild(node) - -e = Wavy() -e.affect() -- 2.30.2