From e3522e56d844e8d7f9b374cee99480aff8c26e18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Langenk=C3=A4mper?= <dlangenk@gmail.com>
Date: Tue, 23 Jul 2024 10:22:54 +0200
Subject: [PATCH] fixes negative sqrt input silently failing

---
 src/resources/scripts/delphi_apply.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/resources/scripts/delphi_apply.py b/src/resources/scripts/delphi_apply.py
index 1e983ae5..ff3092a0 100644
--- a/src/resources/scripts/delphi_apply.py
+++ b/src/resources/scripts/delphi_apply.py
@@ -103,7 +103,15 @@
     s = 1.5 * laserdist
     are = np.sqrt(s * np.power(s - laserdist, 3))
     s = (a + b + c) / 2.
-    apx = np.sqrt(s * (s - a) * (s - b) * (s - c))
+    sqrtinp = s * (s - a) * (s - b) * (s - c)
+    if sqrtinp < 0:
+        print(json.dumps({
+            "error": True,
+            "message": "Computed pixel area is invalid.",
+            "method": detection
+        }))
+        exit(1)
+    apx = np.sqrt(sqrtinp)
     if apx == 0:
         print(json.dumps({
             "error": True,