解析不同的精灵图集情形
Unity 解析精灵和精灵图集之间交互情况的方式取决于各种条件。以下示例详细展现了最常见的情形：
情形 1：基本精灵图集用法
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Sprite Atlas A contains Sprite 1.
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Sprite Atlas A has Include in Build enabled.
- Result: The Project’s published build includes Sprite Atlas A. Sprite 1 renders with the Texture from Sprite Atlas A.
情形 2：禁用“Include in Build”
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Sprite Atlas A contains Sprite 1.
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Sprite Atlas A has Include in Build disabled.
- Result: The Project’s published build does not include Sprite Atlas A, and does not include Sprite 1’s Texture. Sprite 1 appears invisible in the build at run time, because the Texture it refers to is not available and is not loaded.
情形 3：一个精灵位于两个精灵图集中
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Sprite Atlas A and Sprite Atlas B both include Sprite 1 in their Objects for Packing lists.
- Both Sprite Atlas A and Sprite Atlas B have Include in Build enabled.
- Both Sprite Atlases have different Texture output settings in this example.
- Result: The Project’s published build includes both Sprite Atlases. Unity randomly chooses which Texture to render Sprite 1 with, in an internal process that is out of your control.
在此情形中，要确保精灵使用所需精灵图集中的纹理进行渲染，请按照以下步骤操作：
- Disable ‘Include in Build’ for both Sprite Atlases.
- 在运行时初始化精灵时，直接使用 SpriteAtlas.GetSprite 从其中一个图集请求精灵。这样可确保 Unity 始终从正确的精灵图集绘制精灵纹理。