From 6ce8b9e22fc13be34b442c7b6af48b42cd44275a Mon Sep 17 00:00:00 2001
From: chai <215380520@qq.com>
Date: Wed, 13 Mar 2024 11:00:58 +0800
Subject: +init

---
 RuntimeDecalCombiner.cs | 68 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 RuntimeDecalCombiner.cs

(limited to 'RuntimeDecalCombiner.cs')

diff --git a/RuntimeDecalCombiner.cs b/RuntimeDecalCombiner.cs
new file mode 100644
index 0000000..31c1822
--- /dev/null
+++ b/RuntimeDecalCombiner.cs
@@ -0,0 +1,68 @@
+using System.Collections.Generic;
+using ch.sycoforge.Decal;
+using ch.sycoforge.Decal.Projectors.Geometry;
+using UnityEngine;
+
+public class RuntimeDecalCombiner
+{
+	public static List<GameObject> Combine(IList<EasyDecal> decals)
+	{
+		Dictionary<DecalTextureAtlas, List<EasyDecal>> dictionary = new Dictionary<DecalTextureAtlas, List<EasyDecal>>();
+		foreach (EasyDecal decal in decals)
+		{
+			if (decal.Source == SourceMode.Atlas && decal.Projector != null)
+			{
+				if (!dictionary.ContainsKey(decal.Atlas))
+				{
+					dictionary.Add(decal.Atlas, new List<EasyDecal>());
+				}
+				dictionary[decal.Atlas].Add(decal);
+			}
+		}
+		return Combine(dictionary);
+	}
+
+	private static List<GameObject> Combine(Dictionary<DecalTextureAtlas, List<EasyDecal>> mappings)
+	{
+		List<GameObject> list = new List<GameObject>();
+		if (mappings.Count > 0)
+		{
+			foreach (DecalTextureAtlas key in mappings.Keys)
+			{
+				IList<EasyDecal> list2 = mappings[key];
+				foreach (EasyDecal item in list2)
+				{
+					GameObject gameObject = Combine(list2, key);
+					if (gameObject != null)
+					{
+						list.Add(gameObject);
+					}
+				}
+			}
+			return list;
+		}
+		return list;
+	}
+
+	private static GameObject Combine(IList<EasyDecal> decals, DecalTextureAtlas atlas)
+	{
+		if (decals.Count > 0)
+		{
+			DynamicMesh dynamicMesh = new DynamicMesh(DecalBase.DecalRoot, RecreationMode.Always);
+			GameObject gameObject = new GameObject($"Combined Decals Root [{atlas.name}]");
+			MeshFilter meshFilter = gameObject.AddComponent<MeshFilter>();
+			MeshRenderer meshRenderer = gameObject.AddComponent<MeshRenderer>();
+			foreach (EasyDecal decal in decals)
+			{
+				if (decal.Source == SourceMode.Atlas && decal.Projector != null)
+				{
+					dynamicMesh.Add(decal.Projector.Mesh, decal.LocalToWorldMatrix, gameObject.transform.worldToLocalMatrix);
+					decal.gameObject.SetActive(value: false);
+				}
+			}
+			meshRenderer.material = atlas.Material;
+			meshFilter.sharedMesh = dynamicMesh.ConvertToMesh(null);
+		}
+		return null;
+	}
+}
-- 
cgit v1.1-26-g67d0