95 lines
2.6 KiB
Plaintext
95 lines
2.6 KiB
Plaintext
{
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"name": "voronoi",
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"node_position": {
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"x": 0,
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"y": 0
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},
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"parameters": {
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"intensity": 1,
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"randomness": 0.75,
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"scale_x": 4,
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"scale_y": 4,
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"stretch_x": 1,
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"stretch_y": 1
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},
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"shader_model": {
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"code": "vec4 $(name_uv)_xyzw = voronoi($uv, vec2($scale_x, $scale_y), vec2($stretch_y, $stretch_x), $intensity, $randomness, $seed);",
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"global": "vec4 voronoi(vec2 uv, vec2 size, vec2 stretch, float intensity, float randomness, int seed) {\n\tvec2 seed2 = rand2(vec2(float(seed), 1.0-float(seed)));\n uv *= size;\n float best_distance0 = 1.0;\n float best_distance1 = 1.0;\n vec2 point0;\n vec2 point1;\n vec2 p0 = floor(uv);\n for (int dx = -1; dx < 2; ++dx) {\n \tfor (int dy = -1; dy < 2; ++dy) {\n vec2 d = vec2(float(dx), float(dy));\n vec2 p = p0+d;\n p += randomness*rand2(seed2+mod(p, size));\n float distance = length(stretch*(uv - p) / size);\n if (best_distance0 > distance) {\n \tbest_distance1 = best_distance0;\n \tbest_distance0 = distance;\n point1 = point0;\n point0 = p;\n } else if (best_distance1 > distance) {\n \tbest_distance1 = distance;\n point1 = p;\n }\n }\n }\n float edge_distance = dot(uv - 0.5*(point0+point1), normalize(point0-point1));\n \n return vec4(point0, best_distance0*length(size)*intensity, edge_distance);\n}\n",
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"inputs": [
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],
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"instance": "",
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"name": "Voronoi",
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"outputs": [
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{
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"f": "$(name_uv)_xyzw.z",
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"type": "f"
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},
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{
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"f": "$(name_uv)_xyzw.w",
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"type": "f"
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},
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{
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"rgb": "rand3(fract($(name_uv)_xyzw.xy))",
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"type": "rgb"
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}
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],
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"parameters": [
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{
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"default": 4,
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"label": "Scale X",
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"max": 32,
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"min": 1,
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"name": "scale_x",
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"step": 1,
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"type": "float"
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},
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{
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"default": 4,
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"label": "Scale Y",
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"max": 32,
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"min": 1,
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"name": "scale_y",
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"step": 1,
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"type": "float"
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},
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{
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"default": 1,
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"label": "Stretch X",
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"max": 1,
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"min": 0.01,
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"name": "stretch_x",
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"step": 0.01,
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"type": "float"
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},
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{
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"default": 1,
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"label": "Stretch Y",
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"max": 1,
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"min": 0.01,
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"name": "stretch_y",
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"step": 0.01,
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"type": "float"
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},
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{
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"default": 0.75,
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"label": "Intensity",
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"max": 1,
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"min": 0,
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"name": "intensity",
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"step": 0.01,
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"type": "float"
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},
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{
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"default": 1,
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"label": "Randomness",
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"max": 1,
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"min": 0,
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"name": "randomness",
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"step": 0.01,
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"type": "float"
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}
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]
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},
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"type": "shader"
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} |