diff options
Diffstat (limited to 'support/inkscape')
| -rw-r--r-- | support/inkscape/__init__.py | 0 | ||||
| -rw-r--r-- | support/inkscape/__main__.py | 122 | ||||
| -rwxr-xr-x | support/inkscape/bezmisc.py | 273 | ||||
| -rwxr-xr-x | support/inkscape/cspsubdiv.py | 37 | ||||
| -rwxr-xr-x | support/inkscape/cubicsuperpath.py | 169 | ||||
| -rw-r--r-- | support/inkscape/dxf_footer.txt | 62 | ||||
| -rw-r--r-- | support/inkscape/dxf_header.txt | 580 | ||||
| -rw-r--r-- | support/inkscape/effect.py | 201 | ||||
| -rwxr-xr-x | support/inkscape/ffgeom.py | 141 | ||||
| -rwxr-xr-x | support/inkscape/inkex.py | 370 | ||||
| -rwxr-xr-x | support/inkscape/simplepath.py | 212 | ||||
| -rwxr-xr-x | support/inkscape/simpletransform.py | 241 |
12 files changed, 2408 insertions, 0 deletions
diff --git a/support/inkscape/__init__.py b/support/inkscape/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/support/inkscape/__init__.py diff --git a/support/inkscape/__main__.py b/support/inkscape/__main__.py new file mode 100644 index 0000000..3052e6f --- /dev/null +++ b/support/inkscape/__main__.py @@ -0,0 +1,122 @@ +import sys, os, xml.etree.ElementTree, shutil +from lib import util +from . import effect + + +def _export_dxf(in_path, out_path, layers): + dxf_effect = effect.ExportEffect(layers) + dxf_effect.affect(args = [in_path], output = False) + + with open(out_path, 'w') as file: + dxf_effect.write_dxf(file) + + +def _get_inkscape_layers(svg_path): + document = xml.etree.ElementTree.parse(svg_path) + + def iter_layers(): + nodes = document.findall( + '{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]') + + for i in nodes: + inkscape_name = i.get('{http://www.inkscape.org/namespaces/inkscape}label').strip() + + if inkscape_name.endswith(']'): + dxf_name, args = inkscape_name[:-1].rsplit('[', 1) + + dxf_name = dxf_name.strip() + args = args.strip() + + use_paths = 'p' in args + else: + use_paths = False + dxf_name = inkscape_name + + yield effect.Layer(inkscape_name, dxf_name, use_paths = use_paths) + + return list(iter_layers()) + + +def _inkscape(svg_path, verbs): + def iter_args(): + yield os.environ['INKSCAPE'] + + for i in verbs: + yield '--verb' + yield i + + yield svg_path + + util.command(list(iter_args())) + + +def _unfuck_svg_document(temp_svg_path, layers): + """ + Unfucks an SVG document so is can be processed by the better_dxf_export plugin (or what's left of it). + """ + + def iter_inkscape_verbs(): + yield 'LayerUnlockAll' + yield 'LayerShowAll' + + # Go to the first layer. + for _ in layers: + yield 'LayerPrev' + + # Copy each layer and flatten it to a single path object. + for i in layers: + yield 'LayerDuplicate' + yield 'EditSelectAll' + yield 'ObjectToPath' + yield 'EditSelectAll' + yield 'SelectionUnGroup' + + if not i.use_paths: + yield 'EditSelectAll' + yield 'StrokeToPath' + yield 'EditSelectAll' + yield 'SelectionUnion' + + yield 'LayerNext' + + # Go to the first layer again. + for _ in range(2 * len(layers)): + yield 'LayerPrev' + + # Move the flattened shapes to the original layers. + for _ in layers: + yield 'EditSelectAll' + yield 'EditDelete' + yield 'LayerNext' + + yield 'EditSelectAll' + yield 'LayerMoveToPrev' + yield 'LayerNext' + yield 'LayerDelete' + + yield 'FileSave' + yield 'FileClose' + yield 'FileQuit' + + _inkscape(temp_svg_path, list(iter_inkscape_verbs())) + + +def main(in_path, out_path): + with util.TemporaryDirectory() as temp_dir: + temp_svg_path = os.path.join(temp_dir, 'temp.svg') + + shutil.copyfile(in_path, temp_svg_path) + + layers = _get_inkscape_layers(temp_svg_path) + _unfuck_svg_document(temp_svg_path, layers) + + _export_dxf(temp_svg_path, out_path, layers) + + +try: + main(*sys.argv[1:]) +except util.UserError as e: + print 'Error:', e + sys.exit(1) +except KeyboardInterrupt: + sys.exit(2) diff --git a/support/inkscape/bezmisc.py b/support/inkscape/bezmisc.py new file mode 100755 index 0000000..b7f5429 --- /dev/null +++ b/support/inkscape/bezmisc.py @@ -0,0 +1,273 @@ +#!/usr/bin/env python +''' +Copyright (C) 2010 Nick Drobchenko, nick@cnc-club.ru +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 math, cmath + +def rootWrapper(a,b,c,d): + if a: + # Monics formula see http://en.wikipedia.org/wiki/Cubic_function#Monic_formula_of_roots + a,b,c = (b/a, c/a, d/a) + m = 2.0*a**3 - 9.0*a*b + 27.0*c + k = a**2 - 3.0*b + n = m**2 - 4.0*k**3 + w1 = -.5 + .5*cmath.sqrt(-3.0) + w2 = -.5 - .5*cmath.sqrt(-3.0) + if n < 0: + m1 = pow(complex((m+cmath.sqrt(n))/2),1./3) + n1 = pow(complex((m-cmath.sqrt(n))/2),1./3) + else: + if m+math.sqrt(n) < 0: + m1 = -pow(-(m+math.sqrt(n))/2,1./3) + else: + m1 = pow((m+math.sqrt(n))/2,1./3) + if m-math.sqrt(n) < 0: + n1 = -pow(-(m-math.sqrt(n))/2,1./3) + else: + n1 = pow((m-math.sqrt(n))/2,1./3) + x1 = -1./3 * (a + m1 + n1) + x2 = -1./3 * (a + w1*m1 + w2*n1) + x3 = -1./3 * (a + w2*m1 + w1*n1) + return (x1,x2,x3) + elif b: + det=c**2.0-4.0*b*d + if det: + return (-c+cmath.sqrt(det))/(2.0*b),(-c-cmath.sqrt(det))/(2.0*b) + else: + return -c/(2.0*b), + elif c: + return 1.0*(-d/c), + return () + +def bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))): + #parametric bezier + x0=bx0 + y0=by0 + cx=3*(bx1-x0) + bx=3*(bx2-bx1)-cx + ax=bx3-x0-cx-bx + cy=3*(by1-y0) + by=3*(by2-by1)-cy + ay=by3-y0-cy-by + + return ax,ay,bx,by,cx,cy,x0,y0 + #ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + +def linebezierintersect(((lx1,ly1),(lx2,ly2)),((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))): + #parametric line + dd=lx1 + cc=lx2-lx1 + bb=ly1 + aa=ly2-ly1 + + if aa: + coef1=cc/aa + coef2=1 + else: + coef1=1 + coef2=aa/cc + + ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + #cubic intersection coefficients + a=coef1*ay-coef2*ax + b=coef1*by-coef2*bx + c=coef1*cy-coef2*cx + d=coef1*(y0-bb)-coef2*(x0-dd) + + roots = rootWrapper(a,b,c,d) + retval = [] + for i in roots: + if type(i) is complex and i.imag==0: + i = i.real + if type(i) is not complex and 0<=i<=1: + retval.append(bezierpointatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),i)) + return retval + +def bezierpointatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),t): + ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + x=ax*(t**3)+bx*(t**2)+cx*t+x0 + y=ay*(t**3)+by*(t**2)+cy*t+y0 + return x,y + +def bezierslopeatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),t): + ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + dx=3*ax*(t**2)+2*bx*t+cx + dy=3*ay*(t**2)+2*by*t+cy + return dx,dy + +def beziertatslope(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),(dy,dx)): + ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + #quadratic coefficents of slope formula + if dx: + slope = 1.0*(dy/dx) + a=3*ay-3*ax*slope + b=2*by-2*bx*slope + c=cy-cx*slope + elif dy: + slope = 1.0*(dx/dy) + a=3*ax-3*ay*slope + b=2*bx-2*by*slope + c=cx-cy*slope + else: + return [] + + roots = rootWrapper(0,a,b,c) + retval = [] + for i in roots: + if type(i) is complex and i.imag==0: + i = i.real + if type(i) is not complex and 0<=i<=1: + retval.append(i) + return retval + +def tpoint((x1,y1),(x2,y2),t): + return x1+t*(x2-x1),y1+t*(y2-y1) +def beziersplitatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),t): + m1=tpoint((bx0,by0),(bx1,by1),t) + m2=tpoint((bx1,by1),(bx2,by2),t) + m3=tpoint((bx2,by2),(bx3,by3),t) + m4=tpoint(m1,m2,t) + m5=tpoint(m2,m3,t) + m=tpoint(m4,m5,t) + + return ((bx0,by0),m1,m4,m),(m,m5,m3,(bx3,by3)) + +''' +Approximating the arc length of a bezier curve +according to <http://www.cit.gu.edu.au/~anthony/info/graphics/bezier.curves> + +if: + L1 = |P0 P1| +|P1 P2| +|P2 P3| + L0 = |P0 P3| +then: + L = 1/2*L0 + 1/2*L1 + ERR = L1-L0 +ERR approaches 0 as the number of subdivisions (m) increases + 2^-4m + +Reference: +Jens Gravesen <gravesen@mat.dth.dk> +"Adaptive subdivision and the length of Bezier curves" +mat-report no. 1992-10, Mathematical Institute, The Technical +University of Denmark. +''' +def pointdistance((x1,y1),(x2,y2)): + return math.sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2)) +def Gravesen_addifclose(b, len, error = 0.001): + box = 0 + for i in range(1,4): + box += pointdistance(b[i-1], b[i]) + chord = pointdistance(b[0], b[3]) + if (box - chord) > error: + first, second = beziersplitatt(b, 0.5) + Gravesen_addifclose(first, len, error) + Gravesen_addifclose(second, len, error) + else: + len[0] += (box / 2.0) + (chord / 2.0) +def bezierlengthGravesen(b, error = 0.001): + len = [0] + Gravesen_addifclose(b, len, error) + return len[0] + +# balf = Bezier Arc Length Function +balfax,balfbx,balfcx,balfay,balfby,balfcy = 0,0,0,0,0,0 +def balf(t): + retval = (balfax*(t**2) + balfbx*t + balfcx)**2 + (balfay*(t**2) + balfby*t + balfcy)**2 + return math.sqrt(retval) + +def Simpson(f, a, b, n_limit, tolerance): + n = 2 + multiplier = (b - a)/6.0 + endsum = f(a) + f(b) + interval = (b - a)/2.0 + asum = 0.0 + bsum = f(a + interval) + est1 = multiplier * (endsum + (2.0 * asum) + (4.0 * bsum)) + est0 = 2.0 * est1 + #print multiplier, endsum, interval, asum, bsum, est1, est0 + while n < n_limit and abs(est1 - est0) > tolerance: + n *= 2 + multiplier /= 2.0 + interval /= 2.0 + asum += bsum + bsum = 0.0 + est0 = est1 + for i in xrange(1, n, 2): + bsum += f(a + (i * interval)) + est1 = multiplier * (endsum + (2.0 * asum) + (4.0 * bsum)) + #print multiplier, endsum, interval, asum, bsum, est1, est0 + return est1 + +def bezierlengthSimpson(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)), tolerance = 0.001): + global balfax,balfbx,balfcx,balfay,balfby,balfcy + ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + balfax,balfbx,balfcx,balfay,balfby,balfcy = 3*ax,2*bx,cx,3*ay,2*by,cy + return Simpson(balf, 0.0, 1.0, 4096, tolerance) + +def beziertatlength(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)), l = 0.5, tolerance = 0.001): + global balfax,balfbx,balfcx,balfay,balfby,balfcy + ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))) + balfax,balfbx,balfcx,balfay,balfby,balfcy = 3*ax,2*bx,cx,3*ay,2*by,cy + t = 1.0 + tdiv = t + curlen = Simpson(balf, 0.0, t, 4096, tolerance) + targetlen = l * curlen + diff = curlen - targetlen + while abs(diff) > tolerance: + tdiv /= 2.0 + if diff < 0: + t += tdiv + else: + t -= tdiv + curlen = Simpson(balf, 0.0, t, 4096, tolerance) + diff = curlen - targetlen + return t + +#default bezier length method +bezierlength = bezierlengthSimpson + +if __name__ == '__main__': + #print linebezierintersect(((,),(,)),((,),(,),(,),(,))) + #print linebezierintersect(((0,1),(0,-1)),((-1,0),(-.5,0),(.5,0),(1,0))) + tol = 0.00000001 + curves = [((0,0),(1,5),(4,5),(5,5)), + ((0,0),(0,0),(5,0),(10,0)), + ((0,0),(0,0),(5,1),(10,0)), + ((-10,0),(0,0),(10,0),(10,10)), + ((15,10),(0,0),(10,0),(-5,10))] + ''' + for curve in curves: + timing.start() + g = bezierlengthGravesen(curve,tol) + timing.finish() + gt = timing.micro() + + timing.start() + s = bezierlengthSimpson(curve,tol) + timing.finish() + st = timing.micro() + + print g, gt + print s, st + ''' + for curve in curves: + print beziertatlength(curve,0.5) + + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 diff --git a/support/inkscape/cspsubdiv.py b/support/inkscape/cspsubdiv.py new file mode 100755 index 0000000..c34236a --- /dev/null +++ b/support/inkscape/cspsubdiv.py @@ -0,0 +1,37 @@ +#!/usr/bin/env python +from bezmisc import * +from ffgeom import * + +def maxdist(((p0x,p0y),(p1x,p1y),(p2x,p2y),(p3x,p3y))): + p0 = Point(p0x,p0y) + p1 = Point(p1x,p1y) + p2 = Point(p2x,p2y) + p3 = Point(p3x,p3y) + + s1 = Segment(p0,p3) + return max(s1.distanceToPoint(p1),s1.distanceToPoint(p2)) + + +def cspsubdiv(csp,flat): + for sp in csp: + subdiv(sp,flat) + +def subdiv(sp,flat,i=1): + while i < len(sp): + p0 = sp[i-1][1] + p1 = sp[i-1][2] + p2 = sp[i][0] + p3 = sp[i][1] + + b = (p0,p1,p2,p3) + m = maxdist(b) + if m <= flat: + i += 1 + else: + one, two = beziersplitatt(b,0.5) + sp[i-1][2] = one[1] + sp[i][0] = two[2] + p = [one[2],one[3],two[1]] + sp[i:1] = [p] + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 diff --git a/support/inkscape/cubicsuperpath.py b/support/inkscape/cubicsuperpath.py new file mode 100755 index 0000000..925efdb --- /dev/null +++ b/support/inkscape/cubicsuperpath.py @@ -0,0 +1,169 @@ +#!/usr/bin/env python +""" +cubicsuperpath.py + +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 simplepath +from math import * + +def matprod(mlist): + prod=mlist[0] + for m in mlist[1:]: + a00=prod[0][0]*m[0][0]+prod[0][1]*m[1][0] + a01=prod[0][0]*m[0][1]+prod[0][1]*m[1][1] + a10=prod[1][0]*m[0][0]+prod[1][1]*m[1][0] + a11=prod[1][0]*m[0][1]+prod[1][1]*m[1][1] + prod=[[a00,a01],[a10,a11]] + return prod +def rotmat(teta): + return [[cos(teta),-sin(teta)],[sin(teta),cos(teta)]] +def applymat(mat, pt): + x=mat[0][0]*pt[0]+mat[0][1]*pt[1] + y=mat[1][0]*pt[0]+mat[1][1]*pt[1] + pt[0]=x + pt[1]=y +def norm(pt): + return sqrt(pt[0]*pt[0]+pt[1]*pt[1]) + +def ArcToPath(p1,params): + A=p1[:] + rx,ry,teta,longflag,sweepflag,x2,y2=params[:] + teta = teta*pi/180.0 + B=[x2,y2] + if rx==0 or ry==0 or A==B: + return([[A[:],A[:],A[:]],[B[:],B[:],B[:]]]) + mat=matprod((rotmat(teta),[[1/rx,0],[0,1/ry]],rotmat(-teta))) + applymat(mat, A) + applymat(mat, B) + k=[-(B[1]-A[1]),B[0]-A[0]] + d=k[0]*k[0]+k[1]*k[1] + k[0]/=sqrt(d) + k[1]/=sqrt(d) + d=sqrt(max(0,1-d/4)) + if longflag==sweepflag: + d*=-1 + O=[(B[0]+A[0])/2+d*k[0],(B[1]+A[1])/2+d*k[1]] + OA=[A[0]-O[0],A[1]-O[1]] + OB=[B[0]-O[0],B[1]-O[1]] + start=acos(OA[0]/norm(OA)) + if OA[1]<0: + start*=-1 + end=acos(OB[0]/norm(OB)) + if OB[1]<0: + end*=-1 + + if sweepflag and start>end: + end +=2*pi + if (not sweepflag) and start<end: + end -=2*pi + + NbSectors=int(abs(start-end)*2/pi)+1 + dTeta=(end-start)/NbSectors + #v=dTeta*2/pi*0.552 + #v=dTeta*2/pi*4*(sqrt(2)-1)/3 + v = 4*tan(dTeta/4)/3 + #if not sweepflag: + # v*=-1 + p=[] + for i in range(0,NbSectors+1,1): + angle=start+i*dTeta + v1=[O[0]+cos(angle)-(-v)*sin(angle),O[1]+sin(angle)+(-v)*cos(angle)] + pt=[O[0]+cos(angle) ,O[1]+sin(angle) ] + v2=[O[0]+cos(angle)- v *sin(angle),O[1]+sin(angle)+ v *cos(angle)] + p.append([v1,pt,v2]) + p[ 0][0]=p[ 0][1][:] + p[-1][2]=p[-1][1][:] + + mat=matprod((rotmat(teta),[[rx,0],[0,ry]],rotmat(-teta))) + for pts in p: + applymat(mat, pts[0]) + applymat(mat, pts[1]) + applymat(mat, pts[2]) + return(p) + +def CubicSuperPath(simplepath): + csp = [] + subpath = -1 + subpathstart = [] + last = [] + lastctrl = [] + for s in simplepath: + cmd, params = s + if cmd == 'M': + if last: + csp[subpath].append([lastctrl[:],last[:],last[:]]) + subpath += 1 + csp.append([]) + subpathstart = params[:] + last = params[:] + lastctrl = params[:] + elif cmd == 'L': + csp[subpath].append([lastctrl[:],last[:],last[:]]) + last = params[:] + lastctrl = params[:] + elif cmd == 'C': + csp[subpath].append([lastctrl[:],last[:],params[:2]]) + last = params[-2:] + lastctrl = params[2:4] + elif cmd == 'Q': + q0=last[:] + q1=params[0:2] + q2=params[2:4] + x0= q0[0] + x1=1./3*q0[0]+2./3*q1[0] + x2= 2./3*q1[0]+1./3*q2[0] + x3= q2[0] + y0= q0[1] + y1=1./3*q0[1]+2./3*q1[1] + y2= 2./3*q1[1]+1./3*q2[1] + y3= q2[1] + csp[subpath].append([lastctrl[:],[x0,y0],[x1,y1]]) + last = [x3,y3] + lastctrl = [x2,y2] + elif cmd == 'A': + arcp=ArcToPath(last[:],params[:]) + arcp[ 0][0]=lastctrl[:] + last=arcp[-1][1] + lastctrl = arcp[-1][0] + csp[subpath]+=arcp[:-1] + elif cmd == 'Z': + csp[subpath].append([lastctrl[:],last[:],last[:]]) + last = subpathstart[:] + lastctrl = subpathstart[:] + #append final superpoint + csp[subpath].append([lastctrl[:],last[:],last[:]]) + return csp + +def unCubicSuperPath(csp): + a = [] + for subpath in csp: + if subpath: + a.append(['M',subpath[0][1][:]]) + for i in range(1,len(subpath)): + a.append(['C',subpath[i-1][2][:] + subpath[i][0][:] + subpath[i][1][:]]) + return a + +def parsePath(d): + return CubicSuperPath(simplepath.parsePath(d)) + +def formatPath(p): + return simplepath.formatPath(unCubicSuperPath(p)) + + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 diff --git a/support/inkscape/dxf_footer.txt b/support/inkscape/dxf_footer.txt new file mode 100644 index 0000000..a225dd7 --- /dev/null +++ b/support/inkscape/dxf_footer.txt @@ -0,0 +1,62 @@ +0 +ENDSEC +0 +SECTION +2 +OBJECTS +0 +DICTIONARY +5 +C +330 +0 +100 +AcDbDictionary +3 +ACAD_GROUP +350 +D +3 +ACAD_MLINESTYLE +350 +17 +0 +DICTIONARY +5 +D +330 +C +100 +AcDbDictionary +0 +DICTIONARY +5 +1A +330 +C +100 +AcDbDictionary +0 +DICTIONARY +5 +17 +330 +C +100 +AcDbDictionary +3 +STANDARD +350 +18 +0 +DICTIONARY +5 +19 +330 +C +100 +AcDbDictionary +0 +ENDSEC +0 +EOF diff --git a/support/inkscape/dxf_header.txt b/support/inkscape/dxf_header.txt new file mode 100644 index 0000000..341cb1b --- /dev/null +++ b/support/inkscape/dxf_header.txt @@ -0,0 +1,580 @@ +0 +SECTION +2 +HEADER +9 +$ACADVER +1 +AC1014 +9 +$HANDSEED +5 +FFFF +0 +ENDSEC +0 +SECTION +2 +TABLES +0 +TABLE +2 +VPORT +5 +8 +330 +0 +100 +AcDbSymbolTable +70 +4 +0 +VPORT +5 +2E +330 +8 +100 +AcDbSymbolTableRecord +100 +AcDbViewportTableRecord +2 +*ACTIVE +70 +0 +10 +0.0 +20 +0.0 +11 +1.0 +21 +1.0 +12 +4.25 +22 +5.5 +13 +0.0 +23 +0.0 +14 +10.0 +24 +10.0 +15 +10.0 +25 +10.0 +16 +0.0 +26 +0.0 +36 +1.0 +17 +0.0 +27 +0.0 +37 +0.0 +40 +11 +41 +1.24 +42 +50.0 +43 +0.0 +44 +0.0 +50 +0.0 +51 +0.0 +71 +0 +72 +100 +73 +1 +74 +3 +75 +0 +76 +0 +77 +0 +78 +0 +0 +ENDTAB +0 +TABLE +2 +LTYPE +5 +5 +330 +0 +100 +AcDbSymbolTable +70 +1 +0 +LTYPE +5 +14 +330 +5 +100 +AcDbSymbolTableRecord +100 +AcDbLinetypeTableRecord +2 +BYBLOCK +70 +0 +3 + +72 +65 +73 +0 +40 +0.0 +0 +LTYPE +5 +15 +330 +5 +100 +AcDbSymbolTableRecord +100 +AcDbLinetypeTableRecord +2 +BYLAYER +70 +0 +3 + +72 +65 +73 +0 +40 +0.0 +0 +LTYPE +5 +16 +330 +5 +100 +AcDbSymbolTableRecord +100 +AcDbLinetypeTableRecord +2 +CONTINUOUS +70 +0 +3 +Solid line +72 +65 +73 +0 +40 +0.0 +0 +ENDTAB +0 +TABLE +2 +LAYER +5 +2 +330 +0 +100 +AcDbSymbolTable +70 +1 +0 +LAYER +5 +10 +330 +2 +100 +AcDbSymbolTableRecord +100 +AcDbLayerTableRecord +2 +0 +70 +0 +62 +7 +6 +CONTINUOUS +0 +ENDTAB +0 +TABLE +2 +STYLE +5 +3 +330 +0 +100 +AcDbSymbolTable +70 +1 +0 +STYLE +5 +11 +330 +3 +100 +AcDbSymbolTableRecord +100 +AcDbTextStyleTableRecord +2 +STANDARD +70 +0 +40 +0.0 +41 +1.0 +50 +0.0 +71 +0 +42 +2.5 +3 +txt +4 + +0 +ENDTAB +0 +TABLE +2 +VIEW +5 +6 +330 +0 +100 +AcDbSymbolTable +70 +0 +0 +ENDTAB +0 +TABLE +2 +UCS +5 +7 +330 +0 +100 +AcDbSymbolTable +70 +0 +0 +ENDTAB +0 +TABLE +2 +APPID +5 +9 +330 +0 +100 +AcDbSymbolTable +70 +2 +0 +APPID +5 +12 +330 +9 +100 +AcDbSymbolTableRecord +100 +AcDbRegAppTableRecord +2 +ACAD +70 +0 +0 +ENDTAB +0 +TABLE +2 +DIMSTYLE +5 +A +330 +0 +100 +AcDbSymbolTable +70 +1 +0 +DIMSTYLE +105 +27 +330 +A +100 +AcDbSymbolTableRecord +100 +AcDbDimStyleTableRecord +2 +ISO-25 +70 +0 +3 + +4 + +5 + +6 + +7 + +40 +1.0 +41 +2.5 +42 +0.625 +43 +3.75 +44 +1.25 +45 +0.0 +46 +0.0 +47 +0.0 +48 +0.0 +140 +2.5 +141 +2.5 +142 +0.0 +143 +0.03937007874016 +144 +1.0 +145 +0.0 +146 +1.0 +147 +0.625 +71 +0 +72 +0 +73 +0 +74 +0 +75 +0 +76 +0 +77 +1 +78 +8 +170 +0 +171 +3 +172 +1 +173 +0 +174 +0 +175 +0 +176 +0 +177 +0 +178 +0 +270 +2 +271 +2 +272 +2 +273 +2 +274 +3 +340 +11 +275 +0 +280 +0 +281 +0 +282 +0 +283 +0 +284 +8 +285 +0 +286 +0 +287 +3 +288 +0 +0 +ENDTAB +0 +TABLE +2 +BLOCK_RECORD +5 +1 +330 +0 +100 +AcDbSymbolTable +70 +1 +0 +BLOCK_RECORD +5 +1F +330 +1 +100 +AcDbSymbolTableRecord +100 +AcDbBlockTableRecord +2 +*MODEL_SPACE +0 +BLOCK_RECORD +5 +1B +330 +1 +100 +AcDbSymbolTableRecord +100 +AcDbBlockTableRecord +2 +*PAPER_SPACE +0 +ENDTAB +0 +ENDSEC +0 +SECTION +2 +BLOCKS +0 +BLOCK +5 +20 +330 +1F +100 +AcDbEntity +8 +0 +100 +AcDbBlockBegin +2 +*MODEL_SPACE +70 +0 +10 +0.0 +20 +0.0 +30 +0.0 +3 +*MODEL_SPACE +1 + +0 +ENDBLK +5 +21 +330 +1F +100 +AcDbEntity +8 +0 +100 +AcDbBlockEnd +0 +BLOCK +5 +1C +330 +1B +100 +AcDbEntity +67 +1 +8 +0 +100 +AcDbBlockBegin +2 +*PAPER_SPACE +1 + +0 +ENDBLK +5 +1D +330 +1B +100 +AcDbEntity +67 +1 +8 +0 +100 +AcDbBlockEnd +0 +ENDSEC +0 +SECTION +2 +ENTITIES diff --git a/support/inkscape/effect.py b/support/inkscape/effect.py new file mode 100644 index 0000000..c72037c --- /dev/null +++ b/support/inkscape/effect.py @@ -0,0 +1,201 @@ +""" +Based on code from Aaron Spike. See http://www.bobcookdev.com/inkscape/inkscape-dxf.html +""" + +import pkgutil, os, re +from . import inkex, simpletransform, cubicsuperpath, cspsubdiv + + +def _get_unit_factors_map(): + # Fluctuates somewhat between Inkscape releases. + pixels_per_inch = 96. + pixels_per_mm = pixels_per_inch / 25.4 + + return { + 'px': 1.0, + 'mm': pixels_per_mm, + 'cm': pixels_per_mm * 10, + 'm' : pixels_per_mm * 1e3, + 'km': pixels_per_mm * 1e6, + 'pt': pixels_per_inch / 72, + 'pc': pixels_per_inch / 6, + 'in': pixels_per_inch, + 'ft': pixels_per_inch * 12, + 'yd': pixels_per_inch * 36 } + + +class Layer(object): + def __init__(self, inkscape_name, export_name, use_paths): + self.inkscape_name = inkscape_name + self.export_name = export_name + self.use_paths = use_paths + + +class ExportEffect(inkex.Effect): + _unit_factors = _get_unit_factors_map() + + def __init__(self, layers): + inkex.Effect.__init__(self) + + self._layers_by_inkscape_name = { i.inkscape_name: i for i in layers } + self._lines = [] + self._handle = 255 + self._layer_indices = { } + self._flatness = float(os.environ['DXF_FLATNESS']) + + def _get_user_unit(self): + """ + Return the size in pixels of the unit used for measures without an explicit unit. + """ + + document_height = self._measure_to_pixels(self._get_document_height_attr()) + view_box_attr = self.document.getroot().get('viewBox') + + if view_box_attr: + _, _, _, view_box_height = map(float, view_box_attr.split()) + else: + view_box_height = document_height + + return document_height / view_box_height + + def _get_document_unit(self): + """ + Return the size in pixels that the user is working with in Inkscape. + """ + + inkscape_unit_attrs = self.document.getroot().xpath('./sodipodi:namedview/@inkscape:document-units', namespaces = inkex.NSS) + + if inkscape_unit_attrs: + unit = inkscape_unit_attrs[0] + else: + _, unit = self._parse_measure(self._get_document_height_attr()) + + return self._get_unit_factor(unit) + + def _get_document_height_attr(self): + return self.document.getroot().xpath('@height', namespaces = inkex.NSS)[0] + + def _get_layer_index(self, layer_name): + index = self._layer_indices.get(layer_name) + + if index is None: + index = len(self._layer_indices) + self._layer_indices[layer_name] = index + + return index + + def _add_line(self, layer_name, csp): + (x1, y1), (x2, y2) = csp + line = layer_name, x1, y1, x2, y2 + + self._lines.append(line) + + def _add_path(self, layer_name, path): + cspsubdiv.cspsubdiv(path, self._flatness) + + for sub in path: + for i in range(len(sub) - 1): + self._handle += 1 + s = sub[i] + e = sub[i + 1] + self._add_line(layer_name, [s[1], e[1]]) + + def _add_shape(self, node, document_transform, element_transform): + path = cubicsuperpath.parsePath(node.get('d')) + layer = self._layers_by_inkscape_name.get(self._get_inkscape_layer_name(node)) + + if layer is None: + layer_name = '' + else: + layer_name = layer.export_name + + transform = simpletransform.composeTransform( + document_transform, + simpletransform.composeParents(node, element_transform)) + + simpletransform.applyTransformToPath(transform, path) + + self._add_path(layer_name, path) + + def effect(self): + user_unit = self._get_user_unit() + document_unit = self._get_document_unit() + height = self._measure_to_pixels(self._get_document_height_attr()) + + document_transform = simpletransform.composeTransform( + [[1 / document_unit, 0, 0], [0, 1 / document_unit, 0]], + [[1, 0, 0], [0, -1, height]]) + + element_transform = [[user_unit, 0, 0], [0, user_unit, 0]] + + for node in self.document.getroot().xpath('//svg:path', namespaces = inkex.NSS): + self._add_shape(node, document_transform, element_transform) + + def write_dxf(self, file): + file.write(pkgutil.get_data(__name__, 'dxf_header.txt')) + + def _write_instruction(code, value): + print >> file, code + print >> file, value + + for layer_name, x1, y1, x2, y2 in self._lines: + _write_instruction(0, 'LINE') + _write_instruction(8, layer_name) + _write_instruction(62, self._get_layer_index(layer_name)) + _write_instruction(5, '{:x}'.format(self._handle)) + _write_instruction(100, 'AcDbEntity') + _write_instruction(100, 'AcDbLine') + _write_instruction(10, repr(x1)) + _write_instruction(20, repr(y1)) + _write_instruction(30, 0.0) + _write_instruction(11, repr(x2)) + _write_instruction(21, repr(y2)) + _write_instruction(31, 0.0) + + file.write(pkgutil.get_data(__name__, 'dxf_footer.txt')) + + @classmethod + def _parse_measure(cls, string): + value_match = re.match(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)', string) + unit_match = re.search('(%s)$' % '|'.join(cls._unit_factors.keys()), string) + + value = float(string[value_match.start():value_match.end()]) + + if unit_match: + unit = string[unit_match.start():unit_match.end()] + else: + unit = None + + return value, unit + + @classmethod + def _measure_to_pixels(cls, string, default_unit_factor = None): + """ + Parse a string containing a measure and return it's value converted to pixels. If the measure has no unit, it will be assumed that the unit has the size of the specified number of pixels. + """ + + value, unit = cls._parse_measure(string) + + return value * cls._get_unit_factor(unit, default_unit_factor) + + @classmethod + def _get_inkscape_layer_name(cls, node): + while node is not None: + layer = node.get(inkex.addNS('label', 'inkscape')) + + if layer is not None: + return layer + + node = node.getparent() + + return None + + @classmethod + def _get_unit_factor(cls, unit, default = None): + if unit is None: + if default is None: + default = 1 + + return default + else: + return cls._unit_factors[unit] diff --git a/support/inkscape/ffgeom.py b/support/inkscape/ffgeom.py new file mode 100755 index 0000000..ef8799b --- /dev/null +++ b/support/inkscape/ffgeom.py @@ -0,0 +1,141 @@ +#!/usr/bin/env python +""" + ffgeom.py + Copyright (C) 2005 Aaron Cyril Spike, aaron@ekips.org + + This file is part of FretFind 2-D. + + FretFind 2-D 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. + + FretFind 2-D 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 FretFind 2-D; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +""" +import math +try: + NaN = float('NaN') +except ValueError: + PosInf = 1e300000 + NaN = PosInf/PosInf + +class Point: + precision = 5 + def __init__(self, x, y): + self.__coordinates = {'x' : float(x), 'y' : float(y)} + def __getitem__(self, key): + return self.__coordinates[key] + def __setitem__(self, key, value): + self.__coordinates[key] = float(value) + def __repr__(self): + return '(%s, %s)' % (round(self['x'],self.precision),round(self['y'],self.precision)) + def copy(self): + return Point(self['x'],self['y']) + def translate(self, x, y): + self['x'] += x + self['y'] += y + def move(self, x, y): + self['x'] = float(x) + self['y'] = float(y) + +class Segment: + def __init__(self, e0, e1): + self.__endpoints = [e0, e1] + def __getitem__(self, key): + return self.__endpoints[key] + def __setitem__(self, key, value): + self.__endpoints[key] = value + def __repr__(self): + return repr(self.__endpoints) + def copy(self): + return Segment(self[0],self[1]) + def translate(self, x, y): + self[0].translate(x,y) + self[1].translate(x,y) + def move(self,e0,e1): + self[0] = e0 + self[1] = e1 + def delta_x(self): + return self[1]['x'] - self[0]['x'] + def delta_y(self): + return self[1]['y'] - self[0]['y'] + #alias functions + run = delta_x + rise = delta_y + def slope(self): + if self.delta_x() != 0: + return self.delta_x() / self.delta_y() + return NaN + def intercept(self): + if self.delta_x() != 0: + return self[1]['y'] - (self[0]['x'] * self.slope()) + return NaN + def distanceToPoint(self, p): + s2 = Segment(self[0],p) + c1 = dot(s2,self) + if c1 <= 0: + return Segment(p,self[0]).length() + c2 = dot(self,self) + if c2 <= c1: + return Segment(p,self[1]).length() + return self.perpDistanceToPoint(p) + def perpDistanceToPoint(self, p): + len = self.length() + if len == 0: return NaN + return math.fabs(((self[1]['x'] - self[0]['x']) * (self[0]['y'] - p['y'])) - \ + ((self[0]['x'] - p['x']) * (self[1]['y'] - self[0]['y']))) / len + def angle(self): + return math.pi * (math.atan2(self.delta_y(), self.delta_x())) / 180 + def length(self): + return math.sqrt((self.delta_x() ** 2) + (self.delta_y() ** 2)) + def pointAtLength(self, len): + if self.length() == 0: return Point(NaN, NaN) + ratio = len / self.length() + x = self[0]['x'] + (ratio * self.delta_x()) + y = self[0]['y'] + (ratio * self.delta_y()) + return Point(x, y) + def pointAtRatio(self, ratio): + if self.length() == 0: return Point(NaN, NaN) + x = self[0]['x'] + (ratio * self.delta_x()) + y = self[0]['y'] + (ratio * self.delta_y()) + return Point(x, y) + def createParallel(self, p): + return Segment(Point(p['x'] + self.delta_x(), p['y'] + self.delta_y()), p) + def intersect(self, s): + return intersectSegments(self, s) + +def intersectSegments(s1, s2): + x1 = s1[0]['x'] + x2 = s1[1]['x'] + x3 = s2[0]['x'] + x4 = s2[1]['x'] + + y1 = s1[0]['y'] + y2 = s1[1]['y'] + y3 = s2[0]['y'] + y4 = s2[1]['y'] + + denom = ((y4 - y3) * (x2 - x1)) - ((x4 - x3) * (y2 - y1)) + num1 = ((x4 - x3) * (y1 - y3)) - ((y4 - y3) * (x1 - x3)) + num2 = ((x2 - x1) * (y1 - y3)) - ((y2 - y1) * (x1 - x3)) + + num = num1 + + if denom != 0: + x = x1 + ((num / denom) * (x2 - x1)) + y = y1 + ((num / denom) * (y2 - y1)) + return Point(x, y) + return Point(NaN, NaN) + +def dot(s1, s2): + return s1.delta_x() * s2.delta_x() + s1.delta_y() * s2.delta_y() + + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 diff --git a/support/inkscape/inkex.py b/support/inkscape/inkex.py new file mode 100755 index 0000000..19e860b --- /dev/null +++ b/support/inkscape/inkex.py @@ -0,0 +1,370 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- +""" +inkex.py +A helper module for creating Inkscape extensions + +Copyright (C) 2005,2010 Aaron Spike <aaron@ekips.org> and contributors + +Contributors: + Aurélio A. Heckert <aurium(a)gmail.com> + Bulia Byak <buliabyak@users.sf.net> + Nicolas Dufour, nicoduf@yahoo.fr + Peter J. R. Moulder <pjrm@users.sourceforge.net> + +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 copy +import gettext +import optparse +import os +import random +import re +import sys +from math import * + +#a dictionary of all of the xmlns prefixes in a standard inkscape doc +NSS = { +u'sodipodi' :u'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd', +u'cc' :u'http://creativecommons.org/ns#', +u'ccOLD' :u'http://web.resource.org/cc/', +u'svg' :u'http://www.w3.org/2000/svg', +u'dc' :u'http://purl.org/dc/elements/1.1/', +u'rdf' :u'http://www.w3.org/1999/02/22-rdf-syntax-ns#', +u'inkscape' :u'http://www.inkscape.org/namespaces/inkscape', +u'xlink' :u'http://www.w3.org/1999/xlink', +u'xml' :u'http://www.w3.org/XML/1998/namespace' +} + +def localize(): + domain = 'inkscape' + if sys.platform.startswith('win'): + import locale + current_locale, encoding = locale.getdefaultlocale() + os.environ['LANG'] = current_locale + try: + localdir = os.environ['INKSCAPE_LOCALEDIR']; + trans = gettext.translation(domain, localdir, [current_locale], fallback=True) + except KeyError: + trans = gettext.translation(domain, fallback=True) + elif sys.platform.startswith('darwin'): + try: + localdir = os.environ['INKSCAPE_LOCALEDIR']; + trans = gettext.translation(domain, localdir, fallback=True) + except KeyError: + try: + localdir = os.environ['PACKAGE_LOCALE_DIR']; + trans = gettext.translation(domain, localdir, fallback=True) + except KeyError: + trans = gettext.translation(domain, fallback=True) + else: + try: + localdir = os.environ['PACKAGE_LOCALE_DIR']; + trans = gettext.translation(domain, localdir, fallback=True) + except KeyError: + trans = gettext.translation(domain, fallback=True) + #sys.stderr.write(str(localdir) + "\n") + trans.install() + +def debug(what): + sys.stderr.write(str(what) + "\n") + return what + +def errormsg(msg): + """Intended for end-user-visible error messages. + + (Currently just writes to stderr with an appended newline, but could do + something better in future: e.g. could add markup to distinguish error + messages from status messages or debugging output.) + + Note that this should always be combined with translation: + + import inkex + inkex.localize() + ... + inkex.errormsg(_("This extension requires two selected paths.")) + """ + if isinstance(msg, unicode): + sys.stderr.write(msg.encode("UTF-8") + "\n") + else: + sys.stderr.write((unicode(msg, "utf-8", errors='replace') + "\n").encode("UTF-8")) + +def are_near_relative(a, b, eps): + if (a-b <= a*eps) and (a-b >= -a*eps): + return True + else: + return False + + +# third party library +try: + from lxml import etree +except Exception, e: + localize() + errormsg(_("The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from http://cheeseshop.python.org/pypi/lxml/, or install it through your package manager by a command like: sudo apt-get install python-lxml\n\nTechnical details:\n%s" % (e,))) + sys.exit() + +def check_inkbool(option, opt, value): + if str(value).capitalize() == 'True': + return True + elif str(value).capitalize() == 'False': + return False + else: + raise optparse.OptionValueError("option %s: invalid inkbool value: %s" % (opt, value)) + +def addNS(tag, ns=None): + val = tag + if ns!=None and len(ns)>0 and NSS.has_key(ns) and len(tag)>0 and tag[0]!='{': + val = "{%s}%s" % (NSS[ns], tag) + return val + +class InkOption(optparse.Option): + TYPES = optparse.Option.TYPES + ("inkbool",) + TYPE_CHECKER = copy.copy(optparse.Option.TYPE_CHECKER) + TYPE_CHECKER["inkbool"] = check_inkbool + +class Effect: + """A class for creating Inkscape SVG Effects""" + + def __init__(self, *args, **kwargs): + self.document=None + self.original_document=None + self.ctx=None + self.selected={} + self.doc_ids={} + self.options=None + self.args=None + self.OptionParser = optparse.OptionParser(usage="usage: %prog [options] SVGfile",option_class=InkOption) + self.OptionParser.add_option("--id", + action="append", type="string", dest="ids", default=[], + help="id attribute of object to manipulate") + + def effect(self): + pass + + def getoptions(self,args=sys.argv[1:]): + """Collect command line arguments""" + self.options, self.args = self.OptionParser.parse_args(args) + + def parse(self, filename=None): + """Parse document in specified file or on stdin""" + + # First try to open the file from the function argument + if filename != None: + try: + stream = open(filename, 'r') + except Exception: + errormsg(_("Unable to open specified file: %s") % filename) + sys.exit() + + # If it wasn't specified, try to open the file specified as + # an object member + elif self.svg_file != None: + try: + stream = open(self.svg_file, 'r') + except Exception: + errormsg(_("Unable to open object member file: %s") % self.svg_file) + sys.exit() + + # Finally, if the filename was not specified anywhere, use + # standard input stream + else: + stream = sys.stdin + + p = etree.XMLParser(huge_tree=True) + self.document = etree.parse(stream, parser=p) + self.original_document = copy.deepcopy(self.document) + stream.close() + + # defines view_center in terms of document units + def getposinlayer(self): + #defaults + self.current_layer = self.document.getroot() + self.view_center = (0.0,0.0) + + layerattr = self.document.xpath('//sodipodi:namedview/@inkscape:current-layer', namespaces=NSS) + if layerattr: + layername = layerattr[0] + layer = self.document.xpath('//svg:g[@id="%s"]' % layername, namespaces=NSS) + if layer: + self.current_layer = layer[0] + + xattr = self.document.xpath('//sodipodi:namedview/@inkscape:cx', namespaces=NSS) + yattr = self.document.xpath('//sodipodi:namedview/@inkscape:cy', namespaces=NSS) + if xattr and yattr: + x = self.unittouu( xattr[0] + 'px' ) + y = self.unittouu( yattr[0] + 'px') + doc_height = self.unittouu(self.document.getroot().get('height')) + if x and y: + self.view_center = (float(x), doc_height - float(y)) # FIXME: y-coordinate flip, eliminate it when it's gone in Inkscape + + def getselected(self): + """Collect selected nodes""" + for i in self.options.ids: + path = '//*[@id="%s"]' % i + for node in self.document.xpath(path, namespaces=NSS): + self.selected[i] = node + + def getElementById(self, id): + path = '//*[@id="%s"]' % id + el_list = self.document.xpath(path, namespaces=NSS) + if el_list: + return el_list[0] + else: + return None + + def getParentNode(self, node): + for parent in self.document.getiterator(): + if node in parent.getchildren(): + return parent + break + + + def getdocids(self): + docIdNodes = self.document.xpath('//@id', namespaces=NSS) + for m in docIdNodes: + self.doc_ids[m] = 1 + + def getNamedView(self): + return self.document.xpath('//sodipodi:namedview', namespaces=NSS)[0] + + def createGuide(self, posX, posY, angle): + atts = { + 'position': str(posX)+','+str(posY), + 'orientation': str(sin(radians(angle)))+','+str(-cos(radians(angle))) + } + guide = etree.SubElement( + self.getNamedView(), + addNS('guide','sodipodi'), atts ) + return guide + + def output(self): + """Serialize document into XML on stdout""" + original = etree.tostring(self.original_document) + result = etree.tostring(self.document) + if original != result: + self.document.write(sys.stdout) + + def affect(self, args=sys.argv[1:], output=True): + """Affect an SVG document with a callback effect""" + self.svg_file = args[-1] + self.getoptions(args) + self.parse() + self.getposinlayer() + self.getselected() + self.getdocids() + self.effect() + if output: self.output() + + def uniqueId(self, old_id, make_new_id = True): + new_id = old_id + if make_new_id: + while new_id in self.doc_ids: + new_id += random.choice('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ') + self.doc_ids[new_id] = 1 + return new_id + + def xpathSingle(self, path): + try: + retval = self.document.xpath(path, namespaces=NSS)[0] + except: + errormsg(_("No matching node for expression: %s") % path) + retval = None + return retval + + #a dictionary of unit to user unit conversion factors + __uuconv = {'in':96.0, 'pt':1.33333333333, 'px':1.0, 'mm':3.77952755913, 'cm':37.7952755913, + 'm':3779.52755913, 'km':3779527.55913, 'pc':16.0, 'yd':3456.0 , 'ft':1152.0} + + # Function returns the unit used for the values in SVG. + # For lack of an attribute in SVG that explicitly defines what units are used for SVG coordinates, + # try to calculate the unit from the SVG width and SVG viewbox. + # Defaults to 'px' units. + def getDocumentUnit(self): + svgunit = 'px' #default to pixels + + svgwidth = self.document.getroot().get('width') + viewboxstr = self.document.getroot().get('viewBox') + if viewboxstr: + unitmatch = re.compile('(%s)$' % '|'.join(self.__uuconv.keys())) + param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)') + + p = param.match(svgwidth) + u = unitmatch.search(svgwidth) + + width = 100 #default + viewboxwidth = 100 #default + svgwidthunit = 'px' #default assume 'px' unit + if p: + width = float(p.string[p.start():p.end()]) + else: + errormsg(_("SVG Width not set correctly! Assuming width = 100")) + if u: + svgwidthunit = u.string[u.start():u.end()] + + viewboxnumbers = [] + for t in viewboxstr.split(): + try: + viewboxnumbers.append(float(t)) + except ValueError: + pass + if len(viewboxnumbers) == 4: #check for correct number of numbers + viewboxwidth = viewboxnumbers[2] + + svgunitfactor = self.__uuconv[svgwidthunit] * width / viewboxwidth + + # try to find the svgunitfactor in the list of units known. If we don't find something, ... + eps = 0.01 #allow 1% error in factor + for key in self.__uuconv: + if are_near_relative(self.__uuconv[key], svgunitfactor, eps): + #found match! + svgunit = key; + + return svgunit + + + def unittouu(self, string): + '''Returns userunits given a string representation of units in another system''' + unit = re.compile('(%s)$' % '|'.join(self.__uuconv.keys())) + param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)') + + p = param.match(string) + u = unit.search(string) + if p: + retval = float(p.string[p.start():p.end()]) + else: + retval = 0.0 + if u: + try: + return retval * (self.__uuconv[u.string[u.start():u.end()]] / self.__uuconv[self.getDocumentUnit()]) + except KeyError: + pass + else: # default assume 'px' unit + return retval / self.__uuconv[self.getDocumentUnit()] + + return retval + + def uutounit(self, val, unit): + return val / (self.__uuconv[unit] / self.__uuconv[self.getDocumentUnit()]) + + def addDocumentUnit(self, value): + ''' Add document unit when no unit is specified in the string ''' + try: + float(value) + return value + self.getDocumentUnit() + except ValueError: + return value + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 diff --git a/support/inkscape/simplepath.py b/support/inkscape/simplepath.py new file mode 100755 index 0000000..94ab092 --- /dev/null +++ b/support/inkscape/simplepath.py @@ -0,0 +1,212 @@ +#!/usr/bin/env python +""" +simplepath.py +functions for digesting paths into a simple list structure + +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 re, math + +def lexPath(d): + """ + returns and iterator that breaks path data + identifies command and parameter tokens + """ + offset = 0 + length = len(d) + delim = re.compile(r'[ \t\r\n,]+') + command = re.compile(r'[MLHVCSQTAZmlhvcsqtaz]') + parameter = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)') + while 1: + m = delim.match(d, offset) + if m: + offset = m.end() + if offset >= length: + break + m = command.match(d, offset) + if m: + yield [d[offset:m.end()], True] + offset = m.end() + continue + m = parameter.match(d, offset) + if m: + yield [d[offset:m.end()], False] + offset = m.end() + continue + #TODO: create new exception + raise Exception, 'Invalid path data!' +''' +pathdefs = {commandfamily: + [ + implicitnext, + #params, + [casts,cast,cast], + [coord type,x,y,0] + ]} +''' +pathdefs = { + 'M':['L', 2, [float, float], ['x','y']], + 'L':['L', 2, [float, float], ['x','y']], + 'H':['H', 1, [float], ['x']], + 'V':['V', 1, [float], ['y']], + 'C':['C', 6, [float, float, float, float, float, float], ['x','y','x','y','x','y']], + 'S':['S', 4, [float, float, float, float], ['x','y','x','y']], + 'Q':['Q', 4, [float, float, float, float], ['x','y','x','y']], + 'T':['T', 2, [float, float], ['x','y']], + 'A':['A', 7, [float, float, float, int, int, float, float], ['r','r','a',0,'s','x','y']], + 'Z':['L', 0, [], []] + } +def parsePath(d): + """ + Parse SVG path and return an array of segments. + Removes all shorthand notation. + Converts coordinates to absolute. + """ + retval = [] + lexer = lexPath(d) + + pen = (0.0,0.0) + subPathStart = pen + lastControl = pen + lastCommand = '' + + while 1: + try: + token, isCommand = lexer.next() + except StopIteration: + break + params = [] + needParam = True + if isCommand: + if not lastCommand and token.upper() != 'M': + raise Exception, 'Invalid path, must begin with moveto.' + else: + command = token + else: + #command was omited + #use last command's implicit next command + needParam = False + if lastCommand: + if lastCommand.isupper(): + command = pathdefs[lastCommand][0] + else: + command = pathdefs[lastCommand.upper()][0].lower() + else: + raise Exception, 'Invalid path, no initial command.' + numParams = pathdefs[command.upper()][1] + while numParams > 0: + if needParam: + try: + token, isCommand = lexer.next() + if isCommand: + raise Exception, 'Invalid number of parameters' + except StopIteration: + raise Exception, 'Unexpected end of path' + cast = pathdefs[command.upper()][2][-numParams] + param = cast(token) + if command.islower(): + if pathdefs[command.upper()][3][-numParams]=='x': + param += pen[0] + elif pathdefs[command.upper()][3][-numParams]=='y': + param += pen[1] + params.append(param) + needParam = True + numParams -= 1 + #segment is now absolute so + outputCommand = command.upper() + + #Flesh out shortcut notation + if outputCommand in ('H','V'): + if outputCommand == 'H': + params.append(pen[1]) + if outputCommand == 'V': + params.insert(0,pen[0]) + outputCommand = 'L' + if outputCommand in ('S','T'): + params.insert(0,pen[1]+(pen[1]-lastControl[1])) + params.insert(0,pen[0]+(pen[0]-lastControl[0])) + if outputCommand == 'S': + outputCommand = 'C' + if outputCommand == 'T': + outputCommand = 'Q' + + #current values become "last" values + if outputCommand == 'M': + subPathStart = tuple(params[0:2]) + pen = subPathStart + if outputCommand == 'Z': + pen = subPathStart + else: + pen = tuple(params[-2:]) + + if outputCommand in ('Q','C'): + lastControl = tuple(params[-4:-2]) + else: + lastControl = pen + lastCommand = command + + retval.append([outputCommand,params]) + return retval + +def formatPath(a): + """Format SVG path data from an array""" + return "".join([cmd + " ".join([str(p) for p in params]) for cmd, params in a]) + +def translatePath(p, x, y): + for cmd,params in p: + defs = pathdefs[cmd] + for i in range(defs[1]): + if defs[3][i] == 'x': + params[i] += x + elif defs[3][i] == 'y': + params[i] += y + +def scalePath(p, x, y): + for cmd,params in p: + defs = pathdefs[cmd] + for i in range(defs[1]): + if defs[3][i] == 'x': + params[i] *= x + elif defs[3][i] == 'y': + params[i] *= y + elif defs[3][i] == 'r': # radius parameter + params[i] *= x + elif defs[3][i] == 's': # sweep-flag parameter + if x*y < 0: + params[i] = 1 - params[i] + elif defs[3][i] == 'a': # x-axis-rotation angle + if y < 0: + params[i] = - params[i] + +def rotatePath(p, a, cx = 0, cy = 0): + if a == 0: + return p + for cmd,params in p: + defs = pathdefs[cmd] + for i in range(defs[1]): + if defs[3][i] == 'x': + x = params[i] - cx + y = params[i + 1] - cy + r = math.sqrt((x**2) + (y**2)) + if r != 0: + theta = math.atan2(y, x) + a + params[i] = (r * math.cos(theta)) + cx + params[i + 1] = (r * math.sin(theta)) + cy + + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 diff --git a/support/inkscape/simpletransform.py b/support/inkscape/simpletransform.py new file mode 100755 index 0000000..55082ed --- /dev/null +++ b/support/inkscape/simpletransform.py @@ -0,0 +1,241 @@ +#!/usr/bin/env python +''' +Copyright (C) 2006 Jean-Francois Barraud, barraud@math.univ-lille1.fr +Copyright (C) 2010 Alvin Penner, penner@vaxxine.com + +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 +barraud@math.univ-lille1.fr + +This code defines several functions to make handling of transform +attribute easier. +''' +import inkex, cubicsuperpath +import math, re + +def parseTransform(transf,mat=[[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]): + if transf=="" or transf==None: + return(mat) + stransf = transf.strip() + result=re.match("(translate|scale|rotate|skewX|skewY|matrix)\s*\(([^)]*)\)\s*,?",stransf) +#-- translate -- + if result.group(1)=="translate": + args=result.group(2).replace(',',' ').split() + dx=float(args[0]) + if len(args)==1: + dy=0.0 + else: + dy=float(args[1]) + matrix=[[1,0,dx],[0,1,dy]] +#-- scale -- + if result.group(1)=="scale": + args=result.group(2).replace(',',' ').split() + sx=float(args[0]) + if len(args)==1: + sy=sx + else: + sy=float(args[1]) + matrix=[[sx,0,0],[0,sy,0]] +#-- rotate -- + if result.group(1)=="rotate": + args=result.group(2).replace(',',' ').split() + a=float(args[0])*math.pi/180 + if len(args)==1: + cx,cy=(0.0,0.0) + else: + cx,cy=map(float,args[1:]) + matrix=[[math.cos(a),-math.sin(a),cx],[math.sin(a),math.cos(a),cy]] + matrix=composeTransform(matrix,[[1,0,-cx],[0,1,-cy]]) +#-- skewX -- + if result.group(1)=="skewX": + a=float(result.group(2))*math.pi/180 + matrix=[[1,math.tan(a),0],[0,1,0]] +#-- skewY -- + if result.group(1)=="skewY": + a=float(result.group(2))*math.pi/180 + matrix=[[1,0,0],[math.tan(a),1,0]] +#-- matrix -- + if result.group(1)=="matrix": + a11,a21,a12,a22,v1,v2=result.group(2).replace(',',' ').split() + matrix=[[float(a11),float(a12),float(v1)], [float(a21),float(a22),float(v2)]] + + matrix=composeTransform(mat,matrix) + if result.end() < len(stransf): + return(parseTransform(stransf[result.end():], matrix)) + else: + return matrix + +def formatTransform(mat): + return ("matrix(%f,%f,%f,%f,%f,%f)" % (mat[0][0], mat[1][0], mat[0][1], mat[1][1], mat[0][2], mat[1][2])) + +def composeTransform(M1,M2): + a11 = M1[0][0]*M2[0][0] + M1[0][1]*M2[1][0] + a12 = M1[0][0]*M2[0][1] + M1[0][1]*M2[1][1] + a21 = M1[1][0]*M2[0][0] + M1[1][1]*M2[1][0] + a22 = M1[1][0]*M2[0][1] + M1[1][1]*M2[1][1] + + v1 = M1[0][0]*M2[0][2] + M1[0][1]*M2[1][2] + M1[0][2] + v2 = M1[1][0]*M2[0][2] + M1[1][1]*M2[1][2] + M1[1][2] + return [[a11,a12,v1],[a21,a22,v2]] + +def composeParents(node, mat): + trans = node.get('transform') + if trans: + mat = composeTransform(parseTransform(trans), mat) + if node.getparent().tag == inkex.addNS('g','svg'): + mat = composeParents(node.getparent(), mat) + return mat + +def applyTransformToNode(mat,node): + m=parseTransform(node.get("transform")) + newtransf=formatTransform(composeTransform(mat,m)) + node.set("transform", newtransf) + +def applyTransformToPoint(mat,pt): + x = mat[0][0]*pt[0] + mat[0][1]*pt[1] + mat[0][2] + y = mat[1][0]*pt[0] + mat[1][1]*pt[1] + mat[1][2] + pt[0]=x + pt[1]=y + +def applyTransformToPath(mat,path): + for comp in path: + for ctl in comp: + for pt in ctl: + applyTransformToPoint(mat,pt) + +def fuseTransform(node): + if node.get('d')==None: + #FIXME: how do you raise errors? + raise AssertionError, 'can not fuse "transform" of elements that have no "d" attribute' + t = node.get("transform") + if t == None: + return + m = parseTransform(t) + d = node.get('d') + p = cubicsuperpath.parsePath(d) + applyTransformToPath(m,p) + node.set('d', cubicsuperpath.formatPath(p)) + del node.attrib["transform"] + +#################################################################### +##-- Some functions to compute a rough bbox of a given list of objects. +##-- this should be shipped out in an separate file... + +def boxunion(b1,b2): + if b1 is None: + return b2 + elif b2 is None: + return b1 + else: + return((min(b1[0],b2[0]), max(b1[1],b2[1]), min(b1[2],b2[2]), max(b1[3],b2[3]))) + +def roughBBox(path): + xmin,xMax,ymin,yMax = path[0][0][0][0],path[0][0][0][0],path[0][0][0][1],path[0][0][0][1] + for pathcomp in path: + for ctl in pathcomp: + for pt in ctl: + xmin = min(xmin,pt[0]) + xMax = max(xMax,pt[0]) + ymin = min(ymin,pt[1]) + yMax = max(yMax,pt[1]) + return xmin,xMax,ymin,yMax + +def refinedBBox(path): + xmin,xMax,ymin,yMax = path[0][0][1][0],path[0][0][1][0],path[0][0][1][1],path[0][0][1][1] + for pathcomp in path: + for i in range(1, len(pathcomp)): + cmin, cmax = cubicExtrema(pathcomp[i-1][1][0], pathcomp[i-1][2][0], pathcomp[i][0][0], pathcomp[i][1][0]) + xmin = min(xmin, cmin) + xMax = max(xMax, cmax) + cmin, cmax = cubicExtrema(pathcomp[i-1][1][1], pathcomp[i-1][2][1], pathcomp[i][0][1], pathcomp[i][1][1]) + ymin = min(ymin, cmin) + yMax = max(yMax, cmax) + return xmin,xMax,ymin,yMax + +def cubicExtrema(y0, y1, y2, y3): + cmin = min(y0, y3) + cmax = max(y0, y3) + d1 = y1 - y0 + d2 = y2 - y1 + d3 = y3 - y2 + if (d1 - 2*d2 + d3): + if (d2*d2 > d1*d3): + t = (d1 - d2 + math.sqrt(d2*d2 - d1*d3))/(d1 - 2*d2 + d3) + if (t > 0) and (t < 1): + y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t + cmin = min(cmin, y) + cmax = max(cmax, y) + t = (d1 - d2 - math.sqrt(d2*d2 - d1*d3))/(d1 - 2*d2 + d3) + if (t > 0) and (t < 1): + y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t + cmin = min(cmin, y) + cmax = max(cmax, y) + elif (d3 - d1): + t = -d1/(d3 - d1) + if (t > 0) and (t < 1): + y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t + cmin = min(cmin, y) + cmax = max(cmax, y) + return cmin, cmax + +def computeBBox(aList,mat=[[1,0,0],[0,1,0]]): + bbox=None + for node in aList: + m = parseTransform(node.get('transform')) + m = composeTransform(mat,m) + #TODO: text not supported! + d = None + if node.get("d"): + d = node.get('d') + elif node.get('points'): + d = 'M' + node.get('points') + elif node.tag in [ inkex.addNS('rect','svg'), 'rect', inkex.addNS('image','svg'), 'image' ]: + d = 'M' + node.get('x', '0') + ',' + node.get('y', '0') + \ + 'h' + node.get('width') + 'v' + node.get('height') + \ + 'h-' + node.get('width') + elif node.tag in [ inkex.addNS('line','svg'), 'line' ]: + d = 'M' + node.get('x1') + ',' + node.get('y1') + \ + ' ' + node.get('x2') + ',' + node.get('y2') + elif node.tag in [ inkex.addNS('circle','svg'), 'circle', \ + inkex.addNS('ellipse','svg'), 'ellipse' ]: + rx = node.get('r') + if rx is not None: + ry = rx + else: + rx = node.get('rx') + ry = node.get('ry') + cx = float(node.get('cx', '0')) + cy = float(node.get('cy', '0')) + x1 = cx - float(rx) + x2 = cx + float(rx) + d = 'M %f %f ' % (x1, cy) + \ + 'A' + rx + ',' + ry + ' 0 1 0 %f,%f' % (x2, cy) + \ + 'A' + rx + ',' + ry + ' 0 1 0 %f,%f' % (x1, cy) + + if d is not None: + p = cubicsuperpath.parsePath(d) + applyTransformToPath(m,p) + bbox=boxunion(refinedBBox(p),bbox) + + elif node.tag == inkex.addNS('use','svg') or node.tag=='use': + refid=node.get(inkex.addNS('href','xlink')) + path = '//*[@id="%s"]' % refid[1:] + refnode = node.xpath(path) + bbox=boxunion(computeBBox(refnode,m),bbox) + + bbox=boxunion(computeBBox(node,m),bbox) + return bbox + + +# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99 |