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enhance petri net renderer

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This commit is contained in:
Joeri Exelmans 2024-11-21 15:57:14 +01:00
parent 3aec288e37
commit 283cfa7801
3 changed files with 28 additions and 9 deletions
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26
examples/petrinet/renderer.py
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@ -1,5 +1,18 @@
from api.od import ODAPI
from concrete_syntax.graphviz.make_url import make_url
from concrete_syntax.graphviz.make_url import show_graphviz
try:
import graphviz
HAVE_GRAPHVIZ = True
except ImportError:
HAVE_GRAPHVIZ = False
def render_tokens(num_tokens: int):
if 0 <= num_tokens <= 3:
return '●'*num_tokens
if num_tokens == 4:
return '●●\\n●●'
return str(num_tokens)
def render_petri_net(od: ODAPI):
dot = ""
@ -10,20 +23,21 @@ def render_petri_net(od: ODAPI):
dot += "edge [arrowhead=vee];"
dot += "node[fontname=Arial,fontsize=10];\n"
dot += "subgraph places {"
dot += " node [shape=circle,fixedsize=true,label=\"\", height=.3,width=.3];"
dot += " node [shape=circle,fixedsize=true,label=\"\", height=.35,width=.35];"
for _, place_state in od.get_all_instances("PlaceState"):
place = od.get_target(od.get_outgoing(place_state, "of")[0])
place_name = od.get_name(place)
num_tokens = od.get_slot_value(place_state, "numTokens")
dot += f" {place_name} [label=\"{place_name}\\n\\n{'●'*num_tokens}\\n\\n­\"];\n"
dot += f" {place_name} [label=\"{place_name}\\n\\n{render_tokens(num_tokens)}\\n\\n­\"];\n"
dot += "}\n"
dot += "subgraph transitions {"
dot += " node [shape=rect,fixedsize=true,height=.4,width=.15,style=filled,fillcolor=black,color=white];\n"
dot += " node [shape=rect,fixedsize=true,height=.3,width=.12,style=filled,fillcolor=black,color=white];\n"
for transition_name, _ in od.get_all_instances("Transition"):
dot += f" {transition_name} [label=\"{transition_name}\\n\\n\\n\\n­\"];\n"
dot += f" {transition_name} [label=\"{transition_name}\\n\\n\\n­\"];\n"
dot += "}\n"
for _, arc in od.get_all_instances("arc"):
src_name = od.get_name(od.get_source(arc))
tgt_name = od.get_name(od.get_target(arc))
dot += f"{src_name} -> {tgt_name};"
return make_url(dot, engine="circo")
show_graphviz(dot, engine="circo")
return ""