<s> import sys <EOL> import math <EOL> import re <EOL> from graph import * <EOL> from xml . dom import minidom <EOL> import shapely . ops <EOL> from shapely . geometry import LineString <EOL> import kdtree <EOL> from multiprocessing import Process , Queue <EOL> try : <EOL> import silhouette <EOL> units = silhouette . units <EOL> except ImportError : <EOL> msg = "<STR_LIT>" <EOL> print msg <EOL> units . define ( "<STR_LIT>" ) <EOL> def to_steps ( thing ) : <EOL> if type ( thing ) in ( tuple , list ) and len ( thing ) == <NUM_LIT:2> and type ( thing [ <NUM_LIT:0> ] ) in ( int , float ) : <EOL> ( y , x ) = thing <EOL> x *= units [ "<STR_LIT>" ] <EOL> y *= units [ "<STR_LIT>" ] <EOL> x = x . to ( "<STR_LIT>" ) . magnitude <EOL> y = y . to ( "<STR_LIT>" ) . magnitude <EOL> return ( x , y ) <EOL> return map ( to_steps , thing ) <EOL> def draw_rect ( cutter , ** kw ) : <EOL> x = float ( kw [ "<STR_LIT:x>" ] ) <EOL> y = float ( kw [ "<STR_LIT:y>" ] ) <EOL> width = float ( kw [ "<STR_LIT:width>" ] ) <EOL> height = float ( kw [ "<STR_LIT>" ] ) <EOL> move = ( x , y ) <EOL> draw = [ ( x + width , y ) , ( x + width , y + height ) , ( x , y + height ) , ( x , y ) ] <EOL> cutter . position = to_steps ( move ) <EOL> cutter . draw ( to_steps ( draw ) ) <EOL> def parse_path ( path ) : <EOL> commands = set ( "<STR_LIT>" ) <EOL> wsp = set ( "<STR_LIT>" ) <EOL> wsp_comma = wsp . union ( set ( "<STR_LIT:U+002C>" ) ) <EOL> signs = wsp . union ( set ( "<STR_LIT>" ) ) <EOL> command = None <EOL> arguments = [ ] <EOL> arg = '<STR_LIT>' <EOL> for ch in path : <EOL> if ch . upper ( ) in commands : <EOL> if arg : <EOL> arguments . append ( float ( arg ) ) <EOL> if command : <EOL> yield ( command , tuple ( arguments ) ) <EOL> command = ch <EOL> arguments = [ ] <EOL> arg = '<STR_LIT>' <EOL> elif ch in wsp_comma : <EOL> if arg : <EOL> arguments . append ( float ( arg ) ) <EOL> arg = '<STR_LIT>' <EOL> elif ch in signs : <EOL> if arg : <EOL> arguments . append ( float ( arg ) ) <EOL> arg = ch <EOL> else : <EOL> arg += ch <EOL> def extract_lines ( path ) : <EOL> commands = parse_path ( path ) <EOL> moves = <NUM_LIT:0> <EOL> points = <NUM_LIT:0> <EOL> for ( command , args ) in commands : <EOL> if command == '<STR_LIT:M>' : <EOL> moves += <NUM_LIT:1> <EOL> cursor = args <EOL> elif command == '<STR_LIT:L>' : <EOL> line = ( cursor , args ) <EOL> points += <NUM_LIT:2> <EOL> yield line <EOL> cursor = args <EOL> def walk_graph ( graph , node ) : <EOL> stack = [ node ] <EOL> reverse = [ ] <EOL> path = [ node ] <EOL> while stack : <EOL> node = stack [ - <NUM_LIT:1> ] <EOL> children = [ nnode for nnode in graph [ node ] if not graph [ node ] [ nnode ] [ "<STR_LIT>" ] ] <EOL> if children : <EOL> child = children [ <NUM_LIT:0> ] <EOL> graph [ node ] [ child ] [ "<STR_LIT>" ] = True <EOL> if reverse : <EOL> path += reverse <EOL> reverse = [ ] <EOL> path . append ( child ) <EOL> stack . append ( child ) <EOL> continue <EOL> stack . pop ( ) <EOL> if stack : <EOL> reverse . append ( stack [ - <NUM_LIT:1> ] ) <EOL> return path <EOL> def build_path_commands ( tree , graph ) : <EOL> cursor = ( <NUM_LIT:0> , <NUM_LIT:0> ) <EOL> next_node = tree . search_nn ( cursor ) <EOL> nodes = [ ] <EOL> culled = set ( ) <EOL> while next_node : <EOL> ( next_point , distance ) = next_node <EOL> next_point = next_point . data <EOL> distance = math . sqrt ( distance ) <EOL> tree = tree . remove ( next_point ) <EOL> culled . add ( next_point ) <EOL> if nodes and distance > <NUM_LIT:16> : <EOL> yield nodes <EOL> nodes = [ ] <EOL> nodes += walk_graph ( graph , next_point ) <EOL> for node in nodes : <EOL> if node in culled : <EOL> continue <EOL> tree = tree . remove ( node ) or tree <EOL> culled . add ( node ) <EOL> next_node = tree . search_nn ( nodes [ - <NUM_LIT:1> ] ) <EOL> if nodes : <EOL> yield nodes <EOL> def graph_lines ( lines ) : <EOL> graph = BidirectedGraph ( ) <EOL> if isinstance ( lines , LineString ) : <EOL> lines = [ lines ] <EOL> for line in lines : <EOL> last_coord = None <EOL> for coord in line . coords : <EOL> if coord not in graph : <EOL> graph . add_node ( coord ) <EOL> if last_coord : <EOL> val = { "<STR_LIT>" : False } <EOL> graph . connect ( coord , last_coord , val ) <EOL> last_coord = coord <EOL> return graph <EOL> def simplify_path ( path ) : <EOL> lines = to_steps ( extract_lines ( path ) ) <EOL> result = shapely . ops . linemerge ( lines ) <EOL> print "<STR_LIT>" <EOL> graph = graph_lines ( result ) <EOL> print "<STR_LIT>" <EOL> tree = kdtree . create ( graph . keys ( ) ) <EOL> return build_path_commands ( tree , graph ) <EOL> def produce_paths ( svgfn , path_queue ) : <EOL> fh = open ( svgfn ) <EOL> doc = minidom . parse ( fh ) <EOL> paths = doc . getElementsByTagName ( "<STR_LIT:path>" ) <EOL> for path in paths : <EOL> points = path . getAttribute ( '<STR_LIT:d>' ) <EOL> paths = simplify_path ( points ) <EOL> for path in paths : <EOL> path_queue . put ( path ) <EOL> rects = doc . getElementsByTagName ( "<STR_LIT>" ) <EOL> for rect in rects : <EOL> path_queue . put ( dict ( rect . attributes . items ( ) ) ) <EOL> path_queue . put ( "<STR_LIT>" ) <EOL> def draw_svg ( worker , path_queue ) : <EOL> cutter = connect ( ) <EOL> try : <EOL> while <NUM_LIT:1> : <EOL> thing = path_queue . get ( ) <EOL> if thing == "<STR_LIT>" : <EOL> break <EOL> if type ( thing ) == dict : <EOL> for rpt in range ( <NUM_LIT:3> ) : <EOL> draw_rect ( cutter , ** thing ) <EOL> else : <EOL> cutter . position = thing [ <NUM_LIT:0> ] <EOL> cutter . draw ( thing ) <EOL> worker . join ( ) <EOL> finally : <EOL> cutter . home ( ) <EOL> def connect ( ) : <EOL> cutter = silhouette . Silhouette ( ) <EOL> cutter . connect ( ) <EOL> print "<STR_LIT>" <EOL> cutter . speed = <NUM_LIT:8> <EOL> print "<STR_LIT>" <EOL> cutter . pressure = <NUM_LIT:4> <EOL> print "<STR_LIT>" <EOL> cutter . media = <NUM_LIT> <EOL> print "<STR_LIT>" <EOL> cutter . offset = <NUM_LIT:0> <EOL> return cutter <EOL> if __name__ == "<STR_LIT:__main__>" : <EOL> path_queue = Queue ( ) <EOL> svgfn = sys . argv [ <NUM_LIT:1> ] <EOL> worker = Process ( target = produce_paths , args = ( svgfn , path_queue ) ) <EOL> worker . start ( ) <EOL> draw_svg ( worker , path_queue ) </s>
