2019-09-10 22:51:49 +02:00
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{"name":"voronoi","node_position":{"x":0,"y":0},"parameters":{"intensity":0.5,"scale_x":4,"scale_y":4},"shader_model":{"global":"vec4 voronoi(vec2 uv, vec2 size, float intensity, 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 += 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","instance":"","name":"Voronoi","outputs":[{"f":"voronoi($(uv), vec2($(scale_x), $(scale_y)), $(intensity), $(seed)).z"},{"f":"voronoi($(uv), vec2($(scale_x), $(scale_y)), $(intensity), $(seed)).w"},{"rgb":"rand3(fract(voronoi($(uv), vec2($(scale_x), $(scale_y)), $(intensity), $(seed)).xy))"}],"parameters":[{"default":4,"label":"Scale X","max":32,"min":1,"name":"scale_x","step":1,"type":"float","widget":"spinbox"},{"default":4,"label":"Scale Y","max":32,"min":1,"name":"scale_y","step":1,"type":"float","widget":"spinbox"},{"default":0.5,"label":"Intensity","max":1,"min":0,"name":"intensity","step":0.05,"type":"float","widget":"spinbox"}]}}
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