59 lines
No EOL
2.3 KiB
Python
59 lines
No EOL
2.3 KiB
Python
from api.od import ODAPI
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from concrete_syntax.graphviz.make_url import show_graphviz
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from concrete_syntax.graphviz.renderer import make_graphviz_id
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try:
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import graphviz
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HAVE_GRAPHVIZ = True
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except ImportError:
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HAVE_GRAPHVIZ = False
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def render_tokens(num_tokens: int):
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if 0 <= num_tokens <= 3:
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return '●'*num_tokens
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if num_tokens == 4:
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return '●●\\n●●'
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return str(num_tokens)
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def render_petri_net_to_dot(od: ODAPI) -> str:
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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 += "subgraph places {"
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dot += " node [fontname=Arial,fontsize=10,shape=circle,fixedsize=true,label=\"\", height=.35,width=.35];"
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for place_name, place in od.get_all_instances("PNPlace"):
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# place_name = od.get_name(place)
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try:
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place_state = od.get_source(od.get_incoming(place, "pn_of")[0])
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num_tokens = od.get_slot_value(place_state, "numTokens")
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except IndexError:
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num_tokens = 0
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dot += f" {make_graphviz_id(place)} [label=\"{place_name}\\n\\n{render_tokens(num_tokens)}\\n\\n\"];\n"
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dot += "}\n"
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dot += "subgraph transitions {\n"
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dot += " edge [arrowhead=normal];\n"
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dot += " node [fontname=Arial,fontsize=10,shape=rect,fixedsize=true,height=.3,width=.12,style=filled,fillcolor=black,color=white];\n"
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for transition_name, transition in od.get_all_instances("PNTransition"):
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dot += f" {make_graphviz_id(transition)} [label=\"{transition_name}\\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 = od.get_source(arc)
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tgt = od.get_target(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"{make_graphviz_id(src)} -> {make_graphviz_id(tgt)};"
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for _, inhib_arc in od.get_all_instances("inh_arc"):
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src = od.get_source(inhib_arc)
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tgt = od.get_target(inhib_arc)
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dot += f"{make_graphviz_id(src)} -> {make_graphviz_id(tgt)} [arrowhead=odot];\n"
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return dot
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# deprecated
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def render_petri_net(od: ODAPI, engine="neato"):
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show_graphviz(render_petri_net_to_dot(od), engine=engine)
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# use this instead:
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def show_petri_net(od: ODAPI, engine="neato"):
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show_graphviz(render_petri_net_to_dot(od), engine=engine) |