From 7e5c407722324d7e3dd56cf1922173a88492ecee Mon Sep 17 00:00:00 2001
From: biwa <6475593+biwa@users.noreply.github.com>
Date: Sat, 22 Aug 2020 21:36:23 +0200
Subject: [PATCH] Edit Selection Mode: fixed a crash when resizing the
 selection to a line and then trying to pull it out again. Completely
 squashing to a line in not possible anymore

---
 .../BuilderModes/ClassicModes/EditSelectionMode.cs     | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs b/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs
index cc8dd805b..1e5a1fb0b 100755
--- a/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/EditSelectionMode.cs
@@ -595,7 +595,15 @@ namespace CodeImp.DoomBuilder.BuilderModes
 
 						// Change size with the scale from the ruler
 						double newscale = resizeaxis.GetNearestOnLine(snappedmappos);
-						size = (basesize * resizefilter) * newscale + size * (1.0f - resizefilter);
+
+
+						Vector2D newsize = (basesize * resizefilter) * newscale + size * (1.0f - resizefilter);
+
+						// Do not allow the new size to be completely squashed to a line
+						if (newsize.x == 0.0 || newsize.y == 0.0)
+							break;
+
+						size = newsize;
 
 						//mxd. Update scale
 						newscale = 1f / newscale;
-- 
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