64 lines
2.3 KiB
C#
64 lines
2.3 KiB
C#
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using UnityEngine;
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using System;
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using MindPowerSdk;
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using UnityEngine;
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public static class AtlasBuilder
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{
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/// <summary>
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/// 将 textures 中的贴图每 countPerAtlas 张打包成一个图集，默认图集尺寸为 2048。
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/// </summary>
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/// <param name="textures">所有原始贴图，数量应为 countPerAtlas 的倍数</param>
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/// <param name="countPerAtlas">每个图集中包含的贴图数量（例如 16）</param>
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/// <param name="atlasSize">图集尺寸</param>
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/// <returns>打包好的图集数组</returns>
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public static Texture2D[] BuildAtlases(Texture2D[] textures, int countPerAtlas, int atlasSize = 2048)
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{
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int atlasCount = textures.Length / countPerAtlas;
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Texture2D[] atlases = new Texture2D[atlasCount];
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for (int i = 0; i < atlasCount; i++)
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{
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Texture2D atlas = new Texture2D(atlasSize, atlasSize, TextureFormat.RGBA32, false);
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Texture2D[] group = new Texture2D[countPerAtlas];
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for (int j = 0; j < countPerAtlas; j++)
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{
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group[j] = textures[i * countPerAtlas + j];
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}
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// 自动打包，第二个参数表示边距（像素），atlasSize 限制最大尺寸
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atlas.PackTextures(group, 2, atlasSize);
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atlases[i] = atlas;
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}
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return atlases;
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}
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}
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public static class TerrainLayerBuilder
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{
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/// <summary>
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/// 从 4 个图集创建 TerrainLayer，每个图集对应一个层
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/// </summary>
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/// <param name="atlases">必须包含 4 个图集</param>
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/// <returns>TerrainLayer 数组</returns>
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public static TerrainLayer[] BuildTerrainLayers(Texture2D[] atlases)
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{
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if (atlases.Length != 4)
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{
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Debug.LogError("期望传入 4 个图集贴图");
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return null;
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}
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TerrainLayer[] layers = new TerrainLayer[4];
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for (int i = 0; i < 4; i++)
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{
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TerrainLayer tl = new TerrainLayer();
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tl.diffuseTexture = atlases[i];
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// 假设图集内为 4×4 布局，每个子贴图尺寸为 atlas 尺寸的 1/4
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tl.tileSize = new Vector2(tl.diffuseTexture.width / 4f, tl.diffuseTexture.height / 4f);
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layers[i] = tl;
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}
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return layers;
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}
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}
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