Made most of the methods in virtual.

Base/Graphable.cs

@@ -7,12 +7,12 @@ public abstract class Graphable
     private static int defaultColorsUsed;
     public static readonly uint[] DefaultColors =
     [
-        0xEF_B34D47, // Red
-        0xEF_4769B3, // Blue
-        0xEF_50B347, // Green
-        0xEF_7047B3, // Purple
-        0xEF_B38B47, // Orange
-        0xEF_5B5B5B  // Black
+        0xFF_B34D47, // Red
+        0xFF_4769B3, // Blue
+        0xFF_50B347, // Green
+        0xFF_7047B3, // Purple
+        0xFF_B38B47, // Orange
+        0xFF_5B5B5B  // Black
     ];
 
     public Color Color { get; set; }

Base/Graphables/ColumnTable.cs

@@ -32,7 +32,6 @@ public class ColumnTable : Graphable
             tableXY.Add(x, equ(x));
     }
 
-    public override void EraseCache() { }
     public override long GetCacheBytes() => 16 * tableXY.Count;
 
     public override Graphable DeepCopy() => new ColumnTable(width / 0.75, tableXY.ToArray().ToDictionary());

Base/Graphables/Equation.cs

@@ -111,10 +111,8 @@ public class Equation : Graphable
         double totalDist = Math.Sqrt(dist.x * dist.x + dist.y * dist.y);
         return totalDist <= allowedDist;
     }
-    public override Float2 GetSelectedPoint(in GraphForm graph, Float2 graphMousePos)
-    {
-        return new(graphMousePos.x, GetFromCache(graphMousePos.x, 0.001));
-    }
+    public override Float2 GetSelectedPoint(in GraphForm graph, Float2 graphMousePos) =>
+        new(graphMousePos.x, GetFromCache(graphMousePos.x, 1e-3));
 
     public override void Preload(Float2 xRange, Float2 yRange, double step)
     {

Base/Graphables/TangentLine.cs

@@ -14,7 +14,7 @@ public class TangentLine : Graphable
             _position = value;
         }
     }
-    private double _position;
+    private double _position; // Private because it has exactly the same functionality as `Position`.
 
     protected readonly Equation parent;
     protected readonly EquationDelegate parentEqu;

README.md

@@ -6,6 +6,10 @@ Currently, it doesn't have a whole lot of features, but I'll be adding more in t
 - Graph an equation (duh).
     - There are currently some rendering issues with asymptotes which will be focused on at some point.
 - Graph a slope field of a `dy/dx =` style equation.
+- View a tangent line of an equation.
+- Display a vertical bar graph.
+
+However, you can develop your own features as well.
 
 The system does not and likely will not (at least for a while) support text-to-equation parsing. You must import this project as a library and add graphs that way.
 

Testing/Program.cs

@@ -14,13 +14,14 @@ internal static class Program
 
         GraphForm graph = new("One Of The Graphing Calculators Of All Time");
 
-        Equation possibleA = new(x => x * x * x);
-        SlopeField sf = new(2, (x, y) => 3 * x * x);
-        TangentLine tl = new(5, 2, possibleA);
+        Equation possibleA = new(x => Math.Sin(x));
+        SlopeField sf = new(2, (x, y) => Math.Cos(x));
+        TangentLine tl = new(2, 2, possibleA);
         graph.Graph(possibleA, sf, tl);
 
-        // You can also now view and reset caches in the UI by going to
-        // Misc > View Caches.
+        // You can preload graphs in by going Misc > Preload Cache.
+        // Keep in mind this uses more memory than usual and can take
+        // some time.
 
         Application.Run(graph);
     }