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

{"name":"truchet","node_position":{"x":0,"y":0},"parameters":{"Size":4,"shape":1,"size":4,"type":1},"shader_model":{"code":"","global":"float truchet1(vec2 uv, vec2 seed) {\n    vec2 i = floor(uv);\n    vec2 f = fract(uv)-vec2(0.5);\n    return 1.0-abs(abs((2.0*step(rand(i+seed), 0.5)-1.0)*f.x+f.y)-0.5);\n}\n\nfloat truchet2(vec2 uv, vec2 seed) {\n    vec2 i = floor(uv);\n    vec2 f = fract(uv);\n    float random = step(rand(i+seed), 0.5);\n    f.x *= 2.0*random-1.0;\n    f.x += 1.0-random;\n    return 1.0-min(abs(length(f)-0.5), abs(length(1.0-f)-0.5));\n}\n","inputs":[],"instance":"","name":"Truchet","outputs":[{"f":"truchet$shape($uv*$size, vec2($seed, $seed))","type":"f"}],"parameters":[{"default":0,"label":"Shape","name":"shape","type":"enum","values":[{"name":"Line","value":"1"},{"name":"Circle","value":"2"}]},{"default":4,"label":"Size","max":64,"min":2,"name":"size","step":1,"type":"float","widget":"spinbox"}]},"type":"shader"}