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+#!/bin/sh
+#
+# Generate node tree from verbose logfile
+#
+# HOWTO USE
+# =========
+#
+# First of all, you need to recompile modules slideshow and canvas
+# with VERBOSE=t set in the environment, and debug=t defined at the
+# build tool command line. Then run your slideshow and redirect stdout
+# to a file.
+#
+# Then, call 'nodetree.sh trace-file > tree.ps' to generate a
+# PostScript file for the AnimationNode tree generated during the show.
+# Since these easily get pretty huge, use only one page, and try to
+# limit the slide content (which have effects assigned, that is) to
+# the bare minimum (to reproduce your bug, or whatever you need this
+# for).
+#
+# The generated output will have all nodes color-coded with their state
+# at the point when the tree was dumped (see colors.sh for the color
+# codes)
+#
+# When looking for the mechanics that generate the relevant output,
+# grep for the DEBUG_NODES_SHOWTREE macros in the slideshow source:
+# Each such place dumps the current node tree to the trace output. Thus,
+# if you need to check the tree state at other places or times, just add
+# a DEBUG_NODES_SHOWTREE
+#
+
+###################################################
+#
+# Generate node tree
+#
+###################################################
+
+egrep "Node connection|Node state" $1 | \
+ sed -e '/Node state/ s/.*Node state.*: \(.*\)/\1/' \
+ -e '/Node connection/ s/.*Node connection.*: \(n.*\)/\1/' | \
+ \
+awk 'BEGIN { print "digraph Event_network {" }; { print } END { print "}" }' | \
+ \
+ \
+# fill a complete A1 page with graph output
+dot -Gratio=fill -Gsize=23,33 -Tps
+#dot -Gratio=fill -Gorientation=land -Tps