From f88a41af729d153184a6a554440c0101486aa217 Mon Sep 17 00:00:00 2001
From: Rafael Ravedutti <rafaelravedutti@gmail.com>
Date: Thu, 12 Oct 2023 00:38:24 +0200
Subject: [PATCH] Fix penetration depth reference

Signed-off-by: Rafael Ravedutti <rafaelravedutti@gmail.com>
---
 examples/dem.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/dem.py b/examples/dem.py
index 339dee7..c7b2f0b 100644
--- a/examples/dem.py
+++ b/examples/dem.py
@@ -4,7 +4,7 @@ import sys
 
 
 def linear_spring_dashpot(i, j):
-    delta_ij = -penetration_depth
+    delta_ij = -penetration_depth(i, j)
     skip_when(delta_ij < 0.0)
 
     velocity_wf_i = linear_velocity[i] + cross(angular_velocity[i], contact_point(i, j) - position[i])
-- 
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