luanti-extended-engine-features/leef-math-cd2025
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add utils.smoothstep (smooth hermite interpolation)

Browse Source
This commit is contained in:
Colby Klein 2015-08-10 18:59:43 -07:00
parent 871c9246d0
commit 6f050bd1c8
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
modules/utils.lua
View File

@ -12,6 +12,11 @@ function utils.lerp(v, l, h)
return v * (h - l) + l
end
function utils.smoothstep(v, l, h)
local t = utils.clamp((v - l) / (h - l), 0.0, 1.0)
return t * t * (3.0 - 2.0 * t)
end
function utils.round(v, precision)
if precision then return utils.round(v / precision) * precision end
return v >= 0 and math.floor(v+0.5) or math.ceil(v-0.5)