material-maker/addons/material_maker/nodes/voronoi.mmg

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2019-10-27 14:36:16 +01:00
{
"name": "voronoi",
"node_position": {
"x": 0,
"y": 0
},
"parameters": {
"intensity": 0.4,
"randomness": 1,
"scale_x": 16,
"scale_y": 16
},
"shader_model": {
"code": "",
"global": "vec4 voronoi(vec2 uv, vec2 size, float intensity, float randomness, int seed) {\n\tvec2 seed2 = rand2(vec2(float(seed), 1.0-float(seed)));\n uv *= size;\n float best_distance0 = 1.0;\n float best_distance1 = 1.0;\n vec2 point0;\n vec2 point1;\n vec2 p0 = floor(uv);\n for (int dx = -1; dx < 2; ++dx) {\n \tfor (int dy = -1; dy < 2; ++dy) {\n vec2 d = vec2(float(dx), float(dy));\n vec2 p = p0+d;\n p += randomness*rand2(seed2+mod(p, size));\n float distance = length((uv - p) / size);\n if (best_distance0 > distance) {\n \tbest_distance1 = best_distance0;\n \tbest_distance0 = distance;\n point1 = point0;\n point0 = p;\n } else if (best_distance1 > distance) {\n \tbest_distance1 = distance;\n point1 = p;\n }\n }\n }\n float edge_distance = dot(uv - 0.5*(point0+point1), normalize(point0-point1));\n \n return vec4(point0, best_distance0*length(size)*intensity, edge_distance);\n}\n",
"inputs": [
],
"instance": "",
"name": "Voronoi",
"outputs": [
{
"f": "voronoi($uv, vec2($scale_x, $scale_y), $intensity, $randomness, $seed).z",
"type": "f"
},
{
"f": "voronoi($uv, vec2($scale_x, $scale_y), $intensity, $randomness, $seed).w",
"type": "f"
},
{
"rgb": "rand3(fract(voronoi($uv, vec2($scale_x, $scale_y), $intensity, $randomness, $seed).xy))",
"type": "rgb"
}
],
"parameters": [
{
"default": 4,
"label": "Scale X",
"max": 32,
"min": 1,
"name": "scale_x",
"step": 1,
"type": "float"
},
{
"default": 4,
"label": "Scale Y",
"max": 32,
"min": 1,
"name": "scale_y",
"step": 1,
"type": "float"
},
{
"default": 0.5,
"label": "Intensity",
"max": 1,
"min": 0,
"name": "intensity",
"step": 0.05,
"type": "float"
},
{
"default": 1,
"label": "Randomness",
"max": 1,
"min": 0,
"name": "randomness",
"step": 0.01,
"type": "float"
}
]
},
"type": "shader"
}