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74 行
1.8 KiB
74 行
1.8 KiB
using UnityEngine;
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using UnityEngine.Rendering;
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public static class MeshEx
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{
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#if UNITY_2020_1_OR_NEWER
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const MeshUpdateFlags UPDATE_FLAGS_SILENT =
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MeshUpdateFlags.DontNotifyMeshUsers |
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MeshUpdateFlags.DontRecalculateBounds |
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MeshUpdateFlags.DontResetBoneBounds;
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#endif
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public static void EnableSilentWrites(this Mesh mesh, bool enable)
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{
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#if UNITY_2019_3_DEMOS_CAVE
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mesh.enableSilentWrites = enable;
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#endif
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}
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public static void SilentlySetVertices(this Mesh mesh, Vector3[] positions)
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{
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#if UNITY_2020_1_OR_NEWER
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mesh.SetVertices(positions, 0, positions.Length, UPDATE_FLAGS_SILENT);
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#else
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mesh.EnableSilentWrites(true);
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mesh.SetVertices(positions, 0, positions.Length);
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mesh.EnableSilentWrites(false);
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#endif
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}
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public static void SilentlySetNormals(this Mesh mesh, Vector3[] normals)
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{
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#if UNITY_2020_1_OR_NEWER
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mesh.SetNormals(normals, 0, normals.Length, UPDATE_FLAGS_SILENT);
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#else
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mesh.EnableSilentWrites(true);
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mesh.SetNormals(normals, 0, normals.Length);
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mesh.EnableSilentWrites(false);
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#endif
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}
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public static void SilentlyRecalculateTangents(this Mesh mesh)
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{
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#if UNITY_2020_1_OR_NEWER
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mesh.RecalculateTangents(UPDATE_FLAGS_SILENT);
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#else
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mesh.EnableSilentWrites(true);
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mesh.RecalculateTangents();
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mesh.EnableSilentWrites(false);
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#endif
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}
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public static void SilentlyRecalculateNormals(this Mesh mesh)
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{
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#if UNITY_2020_1_OR_NEWER
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mesh.RecalculateNormals(UPDATE_FLAGS_SILENT);
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#else
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mesh.EnableSilentWrites(true);
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mesh.RecalculateNormals();
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mesh.EnableSilentWrites(false);
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#endif
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}
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public static void SilentlyRecalculateBounds(this Mesh mesh)
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{
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#if UNITY_2020_1_OR_NEWER
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mesh.RecalculateBounds(UPDATE_FLAGS_SILENT);
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#else
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mesh.EnableSilentWrites(true);
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mesh.RecalculateBounds();
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mesh.EnableSilentWrites(false);
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#endif
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}
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}
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