54 lines
1.4 KiB
Markdown
54 lines
1.4 KiB
Markdown
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---
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title: 使用Curve进行深度适配的Outline
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date: 2023-07-18 14:47:24
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excerpt:
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tags:
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rating: ⭐
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---
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# 前言
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在UE5.1发现了若干新节点感觉对后处理描边有很大的作用。
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![[MultiDraw_OutlineMaterial.png]]
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UE单位为cm，理论上范围为10cm~10000cm（1000m）。假设标准的角色身高为180cm（110~200cm变化比较轻微）定义一个标准数StandardCharacterHeight。
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经过观察`10~StandardCharacterHeight * 2`范围适合使用CurveTexture，超过StandardCharacterHeight * 2的区域基本是一个线性区间。
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{360 0.5} {10000 0.018}
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斜率 k = 0.0005/1cm
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x轴 10=>0 , 180 => 1
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-18=0 , -0.018
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15 20 25 30 40 60 100
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-12 -9 -7.2 -6 -4.5 -3 -1.8
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0.33 0.25 0.2 0.1666 0.125 0.08333 0.05
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0.667 0.75 0.8 0.83334 0.875 0.91666 0.95
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最终斜率使用0.002
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half invLerp(half from, half to, half value)
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{
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return (value - from) / (to - from);
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}
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half invLerpClamp(half from, half to, half value)
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{
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return saturate(invLerp(from,to,value));
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}
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// full control remap, but slower
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half remap(half origFrom, half origTo, half targetFrom, half targetTo, half value)
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{
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half rel = invLerp(origFrom, origTo, value);
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return lerp(targetFrom, targetTo, rel);
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}
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以下去本人设置的曲线：![[MultiDraw_OutlineCurve.png]]]
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