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-rw-r--r--boltzgas/visual/tracer.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/boltzgas/visual/tracer.py b/boltzgas/visual/tracer.py
index a5b2203..09b058e 100644
--- a/boltzgas/visual/tracer.py
+++ b/boltzgas/visual/tracer.py
@@ -6,6 +6,9 @@ class Tracer:
self.iParticle = iParticle
self.trace = [ ]
+ def setup(self):
+ return
+
def update(self):
position = self.gas.get_positions()[self.iParticle]
self.trace.append((position[0], position[1]))
@@ -17,4 +20,3 @@ class Tracer:
for v in self.trace:
glVertex(*v, 0.)
glEnd()
-