forks/simplex
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

remove C library dependency

Browse Source
This commit is contained in:
tangent
2026-08-15 02:24:34 -06:00
parent a78d58c67d
commit 1ef49ad213
1 changed files with 9 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
simplex.lua
+9 -10
View File
@@ -9,7 +9,6 @@ local table = table
local tonumber = tonumber local tonumber = tonumber
local ipairs = ipairs local ipairs = ipairs
local error = error local error = error
local bit = require("bit")
local simplex = {} local simplex = {}
@@ -137,8 +136,8 @@ function simplex.Noise2D(xin, yin)
local y2 = y0 - 1.0 + 2.0 * G2; local y2 = y0 - 1.0 + 2.0 * G2;
-- Work out the hashed gradient indices of the three simplex corners -- Work out the hashed gradient indices of the three simplex corners
local ii = bit.band(i , 255) local ii = math.floor(i % 255)
local jj = bit.band(j , 255) local jj = math.floor(j % 255)
local gi0 = perm[ii+perm[jj]] % 12; local gi0 = perm[ii+perm[jj]] % 12;
local gi1 = perm[ii+i1+perm[jj+j1]] % 12; local gi1 = perm[ii+i1+perm[jj+j1]] % 12;
local gi2 = perm[ii+1+perm[jj+1]] % 12; local gi2 = perm[ii+1+perm[jj+1]] % 12;
@@ -250,9 +249,9 @@ function simplex.Noise3D(xin, yin, zin)
local z3 = z0 - 1.0 + 3.0*G3; local z3 = z0 - 1.0 + 3.0*G3;
-- Work out the hashed gradient indices of the four simplex corners -- Work out the hashed gradient indices of the four simplex corners
local ii = bit.band(i , 255) local ii = math.floor(i % 255)
local jj = bit.band(j , 255) local jj = math.floor(j % 255)
local kk = bit.band(k , 255) local kk = math.floor(k % 255)
local gi0 = perm[ii+perm[jj+perm[kk]]] % 12; local gi0 = perm[ii+perm[jj+perm[kk]]] % 12;
local gi1 = perm[ii+i1+perm[jj+j1+perm[kk+k1]]] % 12; local gi1 = perm[ii+i1+perm[jj+j1+perm[kk+k1]]] % 12;
@@ -394,10 +393,10 @@ function simplex.Noise4D(x,y,z,w)
local w4 = w0 - 1.0 + 4.0*G4; local w4 = w0 - 1.0 + 4.0*G4;
-- Work out the hashed gradient indices of the five simplex corners -- Work out the hashed gradient indices of the five simplex corners
local ii = bit.band(i , 255) local ii = math.floor(i % 255)
local jj = bit.band(j , 255) local jj = math.floor(j % 255)
local kk = bit.band(k , 255) local kk = math.floor(k % 255)
local ll = bit.band(l , 255) local ll = math.floor(l % 255)
local gi0 = perm[ii+perm[jj+perm[kk+perm[ll]]]] % 32; local gi0 = perm[ii+perm[jj+perm[kk+perm[ll]]]] % 32;
local gi1 = perm[ii+i1+perm[jj+j1+perm[kk+k1+perm[ll+l1]]]] % 32; local gi1 = perm[ii+i1+perm[jj+j1+perm[kk+k1+perm[ll+l1]]]] % 32;
local gi2 = perm[ii+i2+perm[jj+j2+perm[kk+k2+perm[ll+l2]]]] % 32; local gi2 = perm[ii+i2+perm[jj+j2+perm[kk+k2+perm[ll+l2]]]] % 32;