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Diffstat (limited to 'support/pogojig/inkscape/cubicsuperpath.py')
| -rw-r--r-- | support/pogojig/inkscape/cubicsuperpath.py | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/support/pogojig/inkscape/cubicsuperpath.py b/support/pogojig/inkscape/cubicsuperpath.py deleted file mode 100644 index a594660..0000000 --- a/support/pogojig/inkscape/cubicsuperpath.py +++ /dev/null @@ -1,174 +0,0 @@ -#!/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 - -""" -from . 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]) - - 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]) - - # Use exact coordinates for the endpoints. This prevents small drifts when relative coordinates are used and guarantees that a path ending with a z command closes perfectly. - p[0][0] = p1[:] - p[0][1] = p1[:] - p[-1][1] = [x2, y2] - p[-1][2] = [x2, y2] - - 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 |