Check if optics are already arranged

1 files changed, 7 insertions, 2 deletions

diff --git a/arrange_optics_along_x.m b/arrange_optics_along_x.m
index 62db960..817656a 100644
--- a/arrange_optics_along_x.m
+++ b/arrange_optics_along_x.m
@@ -6,9 +6,14 @@ function optics = arrange_optics_along_x(optics_unsorted)
 	x=zeros(1,N);
 	for i=1:N
 		x(i)=optics_unsorted{i}.x;
-	end
+    end
 
-	[xs,indx]=sort(x);
+    if issorted(x)
+        optics = optics_unsorted;
+        return
+    end
+    
+    [xs,indx]=sort(x);
 	cntr=1;
 	for i=indx
 		optics{cntr}=optics_unsorted{i};