29 lines
1.3 KiB
Python
29 lines
1.3 KiB
Python
from api.od import ODAPI
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from concrete_syntax.graphviz.make_url import make_url
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def render_petri_net(od: ODAPI):
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dot = ""
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dot += "rankdir=LR;"
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dot += "center=true;"
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dot += "margin=1;"
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dot += "nodesep=1;"
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dot += "edge [arrowhead=vee];"
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dot += "node[fontname=Arial,fontsize=10];\n"
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dot += "subgraph places {"
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dot += " node [shape=circle,fixedsize=true,label=\"\", height=.3,width=.3];"
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for _, place_state in od.get_all_instances("PlaceState"):
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place = od.get_target(od.get_outgoing(place_state, "of")[0])
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place_name = od.get_name(place)
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num_tokens = od.get_slot_value(place_state, "numTokens")
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dot += f" {place_name} [label=\"{place_name}\\n\\n{'●'*num_tokens}\\n\\n\"];\n"
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dot += "}\n"
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dot += "subgraph transitions {"
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dot += " node [shape=rect,fixedsize=true,height=.4,width=.15,style=filled,fillcolor=black,color=white];\n"
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for transition_name, _ in od.get_all_instances("Transition"):
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dot += f" {transition_name} [label=\"{transition_name}\\n\\n\\n\\n\"];\n"
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dot += "}\n"
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for _, arc in od.get_all_instances("arc"):
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src_name = od.get_name(od.get_source(arc))
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tgt_name = od.get_name(od.get_target(arc))
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dot += f"{src_name} -> {tgt_name};"
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return make_url(dot, engine="circo")
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