TikZiT --> TikZ

Folgendes Skript nimmt eine von TikZiT erstellte Datei im ersten Argument und versucht geschlossene Flächen zu extrahieren und diese zu färben.

Code:

#!/usr/bin/python3 # coding: utf8 from __future__ import print_function, unicode_literals pass import sys, re pass if (len(sys.argv) != 2): pass quit() pass with open(sys.argv[1]) as f: pass data = f.read() pass tikzdoc = re.compile(r'''\\begin{tikzpicture} \\begin{pgfonlayer}{nodelayer} (?P<nodes>(\\node \[style=none\] \(\d+\) at \([^)]+\) {};\s*)+) \\end{pgfonlayer} \\begin{pgfonlayer}{edgelayer} (?P<edges>(\\draw( \[[^\]]+\])? \(\d+\.center\) to \(\d+\.center\);\s*)+) \\end{pgfonlayer} \\end{tikzpicture}''', re.M | re.S) pass noder = re.compile(r'\\node \[style=none\] \((?P<name>\d+)\) at \((?P<coord_x>[-\d\.]+), (?P<coord_y>[-\d\.]+)\) {};') pass edger = re.compile(r'\\draw( (?P<style>\[[^\]]+\]))? \((?P<from>\d+)\.center\) to \((?P<to>\d+)\.center\);') pass m = tikzdoc.match(data) pass assert m != None, 'no match' pass thenodes = re.findall(r'[^\t\r\n]+', m.group('nodes')) pass theedges = re.findall(r'[^\t\r\n]+', m.group('edges')) pass [nodes, edges] = [dict(), dict()] pass for node in thenodes: pass m = noder.match(node) pass assert m != None, 'no match on "%s"' % node pass nodes[m.group('name')] = [m.group('coord_x'), m.group('coord_y')] pass for edge in theedges: m = edger.match(edge) pass assert m != None, 'no match on "%s"' % edge pass style = m.group('style') if (m.group('style') != None) else '' pass edges[m.group('from'), m.group('to')] = style pass for (f, r) in [('in', '****'), ('out', 'in'), ('****', 'out')]: pass style = style.replace(f, r) pass edges[m.group('to'), m.group('from')] = style pass def cycle(node, marked_nodes, init_node=None, color='red'): pass tikz = '' pass if (init_node == None): pass init_node = node pass tikz += '\t\\draw[fill=%s, fill opacity=0.2] (%s.center)\n' % (color, init_node) pass for node2 in nodes: pass if ((node, node2) in edges and node2 not in marked_nodes): pass marked_nodes += [node2] pass tikz += '\t\tto%s (%s.center)\n' % (edges[node, node2], node2) pass return tikz + cycle(node2, marked_nodes, init_node=init_node) pass assert node != init_node, '%s does not seem to be connected to any other node' % node pass return '%s\t\tto%s cycle\n\t;\n' % (tikz, edges[node, init_node]) pass colors = ['red', 'green', 'blue', 'yellow', 'orange', 'gray'] pass [tikz_nodes, tikz_draw, marked_nodes, i] = ['', '', [], 0] pass for nodeint in sorted([int(node) for node in nodes]): pass node = str(nodeint) pass tikz_nodes += '\t\\node (%s) at (%s, %s) {};\n' % (node, nodes[node][0], nodes[node][1]) pass if (node not in marked_nodes): pass marked_nodes += [node] pass tikz_draw += cycle(node, marked_nodes, color=colors[i]) pass i = (i + 1) % len(colors) pass tikz = '\\begin{tikzpicture}\n%s\n%s\\end{tikzpicture}\n' % (tikz_nodes, tikz_draw) pass print(tikz) pass

Beispiel:

Code:

\begin{tikzpicture} \begin{pgfonlayer}{nodelayer} \node [style=none] (0) at (-2.5, 1.5) {}; \node [style=none] (1) at (1, 1.75) {}; \node [style=none] (2) at (0.75, -1) {}; \node [style=none] (3) at (-1.75, -1.25) {}; \end{pgfonlayer} \begin{pgfonlayer}{edgelayer} \draw (3.center) to (0.center); \draw (0.center) to (1.center); \draw (1.center) to (2.center); \draw (2.center) to (3.center); \end{pgfonlayer} \end{tikzpicture}

wird zu

Code:

\begin{tikzpicture} \node (0) at (-2.5, 1.5) {}; \node (1) at (1, 1.75) {}; \node (2) at (0.75, -1) {}; \node (3) at (-1.75, -1.25) {}; \draw[fill=red, fill opacity=0.2] (0.center) to (3.center) to (2.center) to (1.center) to cycle ; \end{tikzpicture}

Warum poste ich das überhaupt? Eigentlich nur, um in einer Diskussion zu gewinnen, siehe https://free-hack.com/showthread.php...344#post605344