# HG changeset patch
# User Alys Brooks <alysbrooks@fastmail.com>
# Date 2022-10-14 06:27:40
# Node ID 412280b6f2ab15ca0903f28ee65463b709da6908
# Parent  096a00964e8cd387c295c3cb0cc2b996057cfb6c

Make the graph slightly nicer for flat series.

Avoids making the range of the graph go into the negative if the series isn't
negative already.

diff --git a/isometric-park-fna/UI/Graph.cs b/isometric-park-fna/UI/Graph.cs
--- a/isometric-park-fna/UI/Graph.cs
+++ b/isometric-park-fna/UI/Graph.cs
@@ -125,6 +125,18 @@
             return (int) (((num - domain.X) / domain_span) * range_span + range.X);
         }
 
+        public static Num.Vector2 adjust_domain(int domain_min, int domain_max)
+        {
+            if (domain_min != domain_max) {
+                return new Num.Vector2(domain_min, domain_max);
+            }
+            else {
+                var lower = MathUtils.Clamp(domain_min, 0, 100);
+                var upper = MathUtils.Clamp(domain_min, 10, 100);
+
+                return new Num.Vector2(domain_min-lower, domain_max+upper);
+            }
+        }
 
         public static void Render(ImFontPtr font, Simulation sim, ImGuiWindowBridgeEngine engine)
         {
@@ -209,7 +221,7 @@
                 }
             }
 
-            var domain = (domain_min != domain_max) ?  new Num.Vector2(domain_min, domain_max) : new Num.Vector2(domain_min-100, domain_max+100) ;
+            var domain = adjust_domain(domain_min, domain_max);
             var range = new Num.Vector2(200 - padding, 0 + padding);
 
             //Zero