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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;
}
}
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