Not that nontrivial, I did that in my very first program for the bbcmicrobot https://twitter.com/bbcmicrobot/status/1604784926032740352 https://twitter.com/bbc

Not that nontrivial, I did that in my very first program for the bbcmicrobot https://twitter.com/bbcmicrobot/status/1604784926032740352 https://twitter.com/bbcmicrobot/status/1604784926032740352 1MO.4:DIMR(4) 2F.Y=820TO120S.-20 3GC.0,1:MOV.0,Y:DR.1279,Y:F.L=1TO4:R(L)=RND(120):N.L 4F.M=0TO1:GC.0,1-M:Z=Y-8*M:F.L=1TO3:A=200+L*150:MOV.A+R(L)+90,Z+160- R(L+1):MOV.A,Z:PL.81,300,0:N.L:N.M 5N.Y 9PRINT TAB(13,29);"BASIC PLEASURES" You can click through in the 'Source' link in the tweet and see how it did that - by painting the image filled in white first then filled in black slightly lower. (Re your point about the heights of the peaks - I actually adjusted my program to do this immediately after posting, and IIRC posted that too, but it was the first attempt that got all the likes/rts. I tended to do this all the time with these-just post the very first version that barely works, then regret it. I'm still doing that, this version of the vertigo poster... https://hachyderm.io/@bbcmicrobot@mastodon.me.uk/110107562467030317 https://hachyderm.io/@bbcmicrobot@mastodon.me.uk/11010756246... was quickly followed by the fixed one... https://hachyderm.io/@bbcmicrobot@mastodon.me.uk/110107978753711576 https://hachyderm.io/@bbcmicrobot@mastodon.me.uk/11010797875...)