refactor(engine): extract default and remnant plate fillers

OpenNest.Engine/HorizontalRemnantEngine.cs

@@ -1,16 +1,13 @@
-using System;
 using System.Collections.Generic;
-using OpenNest.Engine;
 using OpenNest.Engine.Fill;
+using OpenNest.Engine.Jobs.Placement.Fillers;
+using OpenNest.Engine.Strategies;
 using OpenNest.Geometry;
-using OpenNest.Math;
 
 namespace OpenNest.Engine
 {
     /// <summary>
     /// Optimizes for the largest top-side horizontal drop.
-    /// Scores by count first, then minimizes Y-extent.
-    /// Prefers vertical nest direction and angles that keep parts narrow in Y.
     /// </summary>
     public class HorizontalRemnantEngine : DefaultNestEngine
     {
@@ -21,33 +18,21 @@ namespace OpenNest.Engine
 
         public override string Description => "Optimizes for largest top-side horizontal drop";
 
-        protected override IFillComparer CreateComparer() => new HorizontalRemnantComparer();
+        protected override IFillComparer CreateComparer() =>
+            RemnantFillPolicy.Horizontal.CreateComparer();
 
-        public override NestDirection? PreferredDirection => NestDirection.Vertical;
+        public override NestDirection? PreferredDirection =>
+            RemnantFillPolicy.Horizontal.PreferredDirection;
 
-        public override ShrinkAxis TrimAxis => ShrinkAxis.Length;
+        public override ShrinkAxis TrimAxis => RemnantFillPolicy.Horizontal.TrimAxis;
 
         public override List<double> BuildAngles(
             NestItem item,
             ClassificationResult classification,
             Box workArea
-        )
-        {
-            var baseAngles = new List<double>
-            {
-                classification.PrimaryAngle,
-                classification.PrimaryAngle + Angle.HalfPI,
-            };
-            baseAngles.Sort((a, b) => RotatedHeight(item, a).CompareTo(RotatedHeight(item, b)));
-            return baseAngles;
-        }
+        ) => RemnantFillPolicy.Horizontal.BuildAngles(item, classification);
 
-        private static double RotatedHeight(NestItem item, double angle)
-        {
-            var bb = item.Drawing.Program.BoundingBox();
-            var cos = System.Math.Abs(System.Math.Cos(angle));
-            var sin = System.Math.Abs(System.Math.Sin(angle));
-            return bb.Width * cos + bb.Length * sin;
-        }
+        internal override DefaultPlateFiller CreateFiller(Plate plate) =>
+            CreateRemnantFiller(plate, RemnantFillPolicy.Horizontal);
     }
 }