# Dyalog APL, 35 bytes

 {0∊(1|.5*⍨4+5×⍵×⍵),|1|.5*⍨¯4+5×⍵×⍵}

[Try it online!][1]


 [1]: http://tryapl.org/?a=%7B0%25u220A%281%7C.5*%25u23684%205%D7%25u2375%D7%25u2375%29%2C%7C1%7C.5*%25u2368%AF4%205%D7%25u2375%D7%25u2375%7D%A8%25u2373100&run