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Did the same to noise_voronoi.gd.

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Relintai 2021-10-05 17:54:06 +02:00
parent 28e7719c52
commit 0548a8b7fd
1 changed files with 70 additions and 0 deletions
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70
game/addons/mat_maker_gd/nodes/common/noise_voronoi.gd
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@ -3,6 +3,67 @@ extends Reference
const Commons = preload("res://addons/mat_maker_gd/nodes/common/commons.gd")
#voronoi.mmg
#voronoi_1, 2, 3, 4 -> different outputs
#TODO make a set which takes color as input so all 4 variants can be calculated easily
#scale, min: 1, max: 32, step: 1, default: 4
#stretch, min: 0.01, max: 1, step: 0.01, default: 1
#intensity, min: 0, max: 1, step: 0.01, default: 0.75
#randomness, min: 0, max: 1, step: 0.01, default: 1
#vec4 $(name_uv)_xyzw = voronoi($uv, vec2($scale_x, $scale_y), vec2($stretch_y, $stretch_x), $intensity, $randomness, $seed);
#note this is newer than what I have TODO
#// Based on https://www.shadertoy.com/view/ldl3W8
#// The MIT License
#// Copyright © 2013 Inigo Quilez
#vec3 iq_voronoi(vec2 x, vec2 size, vec2 stretch, float randomness, vec2 seed) {
# vec2 n = floor(x);
# vec2 f = fract(x);
# vec2 mg, mr, mc;
# float md = 8.0;
#
# for (int j=-1; j<=1; j++)
# for (int i=-1; i<=1; i++) {
# vec2 g = vec2(float(i),float(j));
# vec2 o = randomness*rand2(seed + mod(n + g + size, size));
# vec2 c = g + o;
# vec2 r = c - f;
# vec2 rr = r*stretch;
# float d = dot(rr,rr);
# if (d<md) {
# mc = c;
# md = d;
# mr = r;
# mg = g;
# }
# }
#
# md = 8.0;
#
# for (int j=-2; j<=2; j++)
# for (int i=-2; i<=2; i++) {
# vec2 g = mg + vec2(float(i),float(j));
# vec2 o = randomness*rand2(seed + mod(n + g + size, size));
# vec2 r = g + o - f;
# vec2 rr = (mr-r)*stretch;
#
# if (dot(rr,rr)>0.00001)
# md = min(md, dot(0.5*(mr+r)*stretch, normalize((r-mr)*stretch)));
# }
#
# return vec3(md, mc+n);
#}
#
#vec4 voronoi(vec2 uv, vec2 size, vec2 stretch, float intensity, float randomness, float seed) {
# uv *= size;
# vec3 v = iq_voronoi(uv, size, stretch, randomness, rand2(vec2(seed, 1.0-seed)));
# return vec4(v.yz, intensity*length((uv-v.yz)*stretch), v.x);
#}
static func voronoi(uv : Vector2, size : Vector2, stretch : Vector2, intensity : float, randomness : float, pseed : int) -> Color:
var seed2 : Vector2 = Commons.rand2(Vector2(float(pseed), 1.0-float(pseed)));
uv *= size;
@ -33,16 +94,22 @@ static func voronoi(uv : Vector2, size : Vector2, stretch : Vector2, intensity :
return Color(point0.x, point0.y, best_distance0 * (size).length() * intensity, edge_distance);
#$(name_uv)_xyzw.z
static func voronoi_1(uv : Vector2, size : Vector2, stretch : Vector2, intensity : float, randomness : float, pseed : int) -> Color:
var c : Color = voronoi(uv, size, stretch, intensity, randomness, pseed);
return Color(c.b, c.b, c.b, 1)
#$(name_uv)_xyzw.w
static func voronoi_2(uv : Vector2, size : Vector2, stretch : Vector2, intensity : float, randomness : float, pseed : int) -> Color:
var c : Color = voronoi(uv, size, stretch, intensity, randomness, pseed);
return Color(c.a, c.a, c.a, 1)
#rand3(fract(floor($(name_uv)_xyzw.xy)/vec2($scale_x, $scale_y)))
static func voronoi_3(uv : Vector2, size : Vector2, stretch : Vector2, intensity : float, randomness : float, pseed : int) -> Color:
var c : Color = voronoi(uv, size, stretch, intensity, randomness, pseed);
@ -52,3 +119,6 @@ static func voronoi_3(uv : Vector2, size : Vector2, stretch : Vector2, intensity
return Color(v.x, v.y, v.z, 1)
#vec4(fract(($(name_uv)_xyzw.xy-1.0)/vec2($scale_x, $scale_y)), vec2(2.0)/vec2($scale_x, $scale_y))
#voronoi_4 todo