105 lines
3.0 KiB
C#
105 lines
3.0 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace Coffee.UIExtensions
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{
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internal static class MeshHelper
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{
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private static CombineInstance[] s_CombineInstances;
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private static int s_TempIndex;
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private static int s_CurrentIndex;
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static readonly List<Color32> s_Colors = new List<Color32>();
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private static int s_RefCount;
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private static Matrix4x4 s_Transform;
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public static uint activeMeshIndices { get; private set; }
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public static void Register()
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{
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if (0 < s_RefCount++) return;
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s_CombineInstances = new CombineInstance[8];
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}
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public static void Unregister()
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{
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s_RefCount--;
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if (0 < s_RefCount || s_CombineInstances == null) return;
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for (var i = 0; i < s_CombineInstances.Length; i++)
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{
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#if UNITY_EDITOR
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if (!Application.isPlaying)
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Object.DestroyImmediate(s_CombineInstances[i].mesh);
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else
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#endif
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{
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Object.Destroy(s_CombineInstances[i].mesh);
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}
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}
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s_CombineInstances = null;
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}
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public static Mesh GetTemporaryMesh(int index)
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{
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if (s_CombineInstances.Length <= s_TempIndex) s_TempIndex = s_CombineInstances.Length - 1;
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s_CurrentIndex = index;
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activeMeshIndices += (uint)(1 << s_CurrentIndex);
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s_CombineInstances[s_TempIndex].transform = s_Transform;
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return s_CombineInstances[s_TempIndex++].mesh;
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}
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public static void DiscardTemporaryMesh()
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{
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if (s_TempIndex == 0) return;
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s_TempIndex--;
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activeMeshIndices -= (uint)(1 << s_CurrentIndex);
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}
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public static void SetTransform(Matrix4x4 transform)
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{
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s_Transform = transform;
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}
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public static void Clear()
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{
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if (s_CombineInstances == null) return;
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s_CurrentIndex = 0;
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activeMeshIndices = 0;
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s_TempIndex = 0;
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for (var i = 0; i < s_CombineInstances.Length; i++)
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{
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if (!s_CombineInstances[i].mesh)
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{
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var mesh = new Mesh();
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mesh.MarkDynamic();
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s_CombineInstances[i].mesh = mesh;
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}
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else
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{
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s_CombineInstances[i].mesh.Clear(false);
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}
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}
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}
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public static void CombineMesh(Mesh result)
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{
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if (!result || s_TempIndex == 0) return;
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result.CombineMeshes(s_CombineInstances, false, true);
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result.RecalculateBounds();
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}
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public static void ModifyColorSpaceToLinear(this Mesh self)
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{
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self.GetColors(s_Colors);
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for (var i = 0; i < s_Colors.Count; i++)
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s_Colors[i] = ((Color) s_Colors[i]).gamma;
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self.SetColors(s_Colors);
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s_Colors.Clear();
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}
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}
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}
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