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

{"name":"circle_map","node_position":{"x":0,"y":0},"parameters":{},"shader_model":{"code":"","global":"","inputs":[{"default":"vec4($uv, 0.0, 1.0)","label":"","name":"in","type":"rgba"}],"instance":"","name":"CircleMap","outputs":[{"rgba":"$in(vec2(fract(atan($uv.y-0.5, $uv.x-0.5)*0.15915494309), min(0.99999, 2.0*length($uv-vec2(0.5)))))","type":"rgba"}],"parameters":[]},"type":"shader"}