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坐标问题 #1

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qdx opened this issue Oct 24, 2020 · 0 comments

qdx commented Oct 24, 2020

FogOfWar_ForUnity/Assets/FogOfWar/Prefabs/FowFogRenderer.prefab

Line 69 in 910704d

m_LocalScale: {x: -0.2, y: 0.2, z: -0.2}

QinZhuo你好，我是在bilibili看到你的战争迷雾教学来这里学习的~感谢你的教程，非常受用！
我有个疑问研究了好久没搞明白，所以只能在这里向你提问。

FowFogRenderer prefab里面，你把plane的scale设置为(-0.2, 0.2, -0.2)，请问这是为什么？为何x和z需要设为负数？

我自己在尝试按照你的思路实现战争迷雾的时候，发现如果把scale都保持为整数，unity的Texture2D.SetPixels32的Array映射到平面上就变成了从右上角开始，一行一行的从右往左展开。而不是unity自己官方文档说的从左下角一行行从左向右展开。

我接触shader和图形学很浅，所以可能有些常识性问题并没有意识到，感谢你耐心解答

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