Const voronoise2
voronoise2: TaggedFn3<"vec2", "float", "float", "float"> = defn("float","voronoise2",["vec2", "float", "float"],(x, u, v) => {let p: Vec2Sym;let f: Vec2Sym;let coeff: Vec3Sym;let k: FloatSym;let va: FloatSym;let wt: FloatSym;let g: Vec2Sym;let o: Vec3Sym;let r: Vec2Sym;let w: FloatSym;return [(p = sym(floor(x))),(f = sym(fract(x))),(coeff = sym(vec3(u, u, 1))),(k = sym(add(1, mul(63, pow(sub(1, v), float(4)))))),(va = sym(FLOAT0)),(wt = sym(FLOAT0)),forLoop(sym(int(-2)),(i) => lte(i, int(2)),inc,(i) => [forLoop(sym(int(-2)),(j) => lte(j, int(2)),inc,(j) => [(g = sym(vec2(float(i), float(j)))),(o = sym(mul(hash32(add(p, g)), coeff))),(r = sym(add(sub(g, f), $xy(o)))),(w = sym(pow(sub(1,smoothstep(FLOAT0,SQRT2,sqrt(dot(r, r)))),k))),assign(va, madd(w, $z(o), va)),assign(wt, add(wt, w)),]),]),ret(div(va, wt)),];})
IQ's parametric 2D voronoise. Depending on
uandv, this function produces 4 different noise typeshttp://www.iquilezles.org/www/articles/voronoise/voronoise.htm
Note: This implementation uses the improved hash32 by Dave Hoskins instead of iq's original hash3.
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