""" Registration info for Blender menus: <- these words are ignored
Name: 'Bezier Curve to Svg Path'
Blender: 237
Group: 'Export'
Tip: 'Export Bezier Curve in svg path format'
"""

__author__ = "Jean-Michel Soler (jms)"
__url__ = ("blender", "elysiun",
"Script's homepage, http://jmsoler.free.fr/didacticiel/blender/tutor/py_bezcurve2svg.htm",
"Communicate problems and errors, http://www.zoo-logique.org/3D.Blender/newsportal/thread.php?group=3D.Blender")
__version__ = "0.3.1"

__bpydoc__ = """\

"""
# --------------------------------------------------------------------------
# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2005: jm soler, jmsoler_at_free.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,
# --------------------------------------------------------------------------

#-----------------
# Derniere mise a jour : 
# v0.3.2,  10/10/2005 
#    ajout de la fonction fileselector
# 
# v0.3.1,  28/09/2005
#    correction dans l'evaluation de la taille de la boundbox
#    parenthse mal placee :
#    ...(B[3][2]-B[0][2])**2.0)**0.5
#
# v0.3,    27/09/2005
#    correction de positionnement de la courbe issue de blender 
#    dans le viewport du fichier svg
# 
#-----------------
import Blender

from Blender import sys as bsys
from Blender.Window import FileSelector
from Blender import Object

# config options:
CONFIRM_OVERWRITE = True

def SVGBzCurve_export(ob, FILE_ADDRESS):
 #DIR_ADDRESS='F:/tmp/'
 #FILE_ADDRESS='bezcurve2svg.svg'
 B=ob.getBoundBox()
 print 'BOUND', B
 B1=((B[3][0]-B[0][0])**2.0 + (B[3][1]-B[0][1])**2.0 + (B[3][2]-B[0][2])**2.0)**0.5
 B2=((B[7][0]-B[3][0])**2.0 + (B[7][1]-B[3][1])**2.0 + (B[7][2]-B[3][2])**2.0)**0.5
 BASE="""<?xml version="1.0" standalone="no"?>
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN" 
   "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
 <svg width="%s" height="%s"  viewBox="0 0 %s %s"
   xmlns="http://www.w3.org/2000/svg">
 <title>coubre de bezier : %s</title>
   <desc>Un trace dessinant une courbe de type bezie issue de blender</desc>
 """%(B2,B1,B2,B1,ob.getName())
 END="""</svg>"""
 DECALAGE=B[0][0]-ob.getLocation()[0], ob.getLocation()[1]-B[0][1]
 SX,SY,SZ=ob.getSize()
 SY*=-1.0
 FILE=open(FILE_ADDRESS,'w')
 FILE.write(BASE)
 curve = ob.getData()
 for cur in curve:
  if not cur.isNurb():
   n=0
   PATH="""<g transform>
   <path d="chemin"/></g>\n"""
   for point in cur:
    if n==0: 
     ORIGINE=point.getTriple()
     CHEMIN="M %s %s\n"%(ORIGINE[1][0]*SX,ORIGINE[1][1]*SY+B1)
     PREV=ORIGINE[2][0],ORIGINE[2][1]
     n+=1
    else: 
     P=point.getTriple()
     CHEMIN+="C %s %s %s %s %s %s \n"%(PREV[0]*SX,
              PREV[1]*SY+B1,
              P[0][0]*SX,
              P[0][1]*SY+B1,
              P[1][0]*SX,
              P[1][1]*SY+B1)
     PREV=P[2][0],P[2][1]
     #print CHEMIN
   if cur.isCyclic():
    CHEMIN+="C %s %s %s %s %s %s \n"%(PREV[0]*SX,
              PREV[1]*SY+B1,
              ORIGINE[0][0]*SX,
              ORIGINE[0][1]*SY+B1,
              ORIGINE[1][0]*SX,
              ORIGINE[1][1]*SY+B1)
    CHEMIN+="Z"
   PATH=PATH.replace('transform',"transform=\"translate(-%s -%s)\""%(DECALAGE[0],DECALAGE[1]))#DECALAGE[0],DECALAGE[1])) 
   PATH=PATH.replace('chemin',CHEMIN) 
   FILE.write(PATH)
 FILE.write(END)
 FILE.close()
 

def fs_callback(filename):
 global OBJS, CONFIRM_OVERWRITE
 if not filename.endswith('.svg'): filename = '%s.svg' % filename
 if bsys.exists(filename) and CONFIRM_OVERWRITE:
  if Blender.Draw.PupMenu('OVERWRITE?%t|File exists') != 1:
   return
 Blender.Window.WaitCursor(1)
 SVGBzCurve_export(OBJS[0],filename)
 Blender.Window.WaitCursor(0)
 return

OBJS = Blender.Object.GetSelected()

if not OBJS:
 Blender.Draw.PupMenu('ERROR: No objects selected')
else:
 fname = bsys.makename(ext=".svg")
 FileSelector(fs_callback, "Bez Curve to SVG", fname)