From ebab0a11f38bc5f2af60d080c404f83a5a3b9288 Mon Sep 17 00:00:00 2001
From: ikpil <ikpil@naver.com>
Date: Fri, 7 Jun 2024 21:44:59 +0900
Subject: [PATCH] Removed RcVecUtils.Subtract(RcVec3f i, float[] verts, int j)

---
 CHANGELOG.md                              |  1 +
 src/DotRecast.Core/Numerics/RcVecUtils.cs | 12 ------------
 src/DotRecast.Recast/RcMeshDetails.cs     | 18 +++++++++---------
 3 files changed, 10 insertions(+), 21 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e244f9..e1e5281 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Removed
 - Removed RcVecUtils.Dot()
 - Removed RcVecUtils.Scale()
+- Removed RcVecUtils.Subtract(RcVec3f i, float[] verts, int j)
 
 ### Special Thanks
 - [@Doprez](https://github.com/Doprez)
diff --git a/src/DotRecast.Core/Numerics/RcVecUtils.cs b/src/DotRecast.Core/Numerics/RcVecUtils.cs
index a083b2c..65b24ff 100644
--- a/src/DotRecast.Core/Numerics/RcVecUtils.cs
+++ b/src/DotRecast.Core/Numerics/RcVecUtils.cs
@@ -84,18 +84,6 @@ namespace DotRecast.Core.Numerics
             );
         }
 
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static RcVec3f Subtract(RcVec3f i, float[] verts, int j)
-        {
-            return new RcVec3f(
-                i.X - verts[j],
-                i.Y - verts[j + 1],
-                i.Z - verts[j + 2]
-            );
-        }
-
-
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void Cross(float[] dest, float[] v1, float[] v2)
         {
diff --git a/src/DotRecast.Recast/RcMeshDetails.cs b/src/DotRecast.Recast/RcMeshDetails.cs
index 7cead00..755dd4d 100644
--- a/src/DotRecast.Recast/RcMeshDetails.cs
+++ b/src/DotRecast.Recast/RcMeshDetails.cs
@@ -183,11 +183,11 @@ namespace DotRecast.Recast
             return false;
         }
 
-        private static float DistPtTri(RcVec3f p, float[] verts, int a, int b, int c)
+        private static float DistPtTri(RcVec3f p, RcVec3f a, RcVec3f b, RcVec3f c)
         {
-            var v0 = RcVecUtils.Subtract(verts, c, a);
-            var v1 = RcVecUtils.Subtract(verts, b, a);
-            var v2 = RcVecUtils.Subtract(p, verts, a);
+            var v0 = c - a;
+            var v1 = b - a;
+            var v2 = p - a;
 
             float dot00 = Vdot2(v0, v0);
             float dot01 = Vdot2(v0, v1);
@@ -204,7 +204,7 @@ namespace DotRecast.Recast
             const float EPS = 1e-4f;
             if (u >= -EPS && v >= -EPS && (u + v) <= 1 + EPS)
             {
-                float y = verts[a + 1] + v0.Y * u + v1.Y * v;
+                float y = a.Y + v0.Y * u + v1.Y * v;
                 return MathF.Abs(y - p.Y);
             }
 
@@ -303,10 +303,10 @@ namespace DotRecast.Recast
             float dmin = float.MaxValue;
             for (int i = 0; i < ntris; ++i)
             {
-                int va = tris[i * 4 + 0] * 3;
-                int vb = tris[i * 4 + 1] * 3;
-                int vc = tris[i * 4 + 2] * 3;
-                float d = DistPtTri(p, verts, va, vb, vc);
+                RcVec3f va = RcVecUtils.Create(verts, tris[i * 4 + 0] * 3);
+                RcVec3f vb = RcVecUtils.Create(verts, tris[i * 4 + 1] * 3);
+                RcVec3f vc = RcVecUtils.Create(verts, tris[i * 4 + 2] * 3);
+                float d = DistPtTri(p, va, vb, vc);
                 if (d < dmin)
                 {
                     dmin = d;