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# -*- coding: utf-8 -*-
"""
$Id$
Copyright 2010 Lars Kruse <devel@sumpfralle.de>
Copyright 2008 Lode Leroy
This file is part of PyCAM.
PyCAM 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 3 of the License, or
(at your option) any later version.
PyCAM 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 PyCAM. If not, see <http://www.gnu.org/licenses/>.
"""
import pycam.PathProcessors
from pycam.Toolpath import simplify_toolpath
from pycam.Geometry.Path import Path
class PathAccumulator(pycam.PathProcessors.BasePathProcessor):
def __init__(self, zigzag=False, reverse=False):
super(PathAccumulator, self).__init__()
self.curr_path = None
self.zigzag = zigzag
self.scanline = None
self.reverse = reverse
def append(self, point):
if self.curr_path == None:
self.curr_path = Path()
if self.reverse:
self.curr_path.insert(0, point)
else:
self.curr_path.append(point)
def new_direction(self, direction):
self.scanline = 0
def new_scanline(self):
self.scanline += 1
if self.curr_path:
print "ERROR: curr_path expected to be empty"
self.curr_path = None
def end_scanline(self):
if self.curr_path:
if self.zigzag and (self.scanline % 2 == 0):
self.curr_path.reverse()
simplify_toolpath(self.curr_path)
if self.reverse:
self.paths.insert(0, self.curr_path)
else:
self.paths.append(self.curr_path)
self.curr_path = None