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Add inverse fret number function

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Luke Hubmayer-Werner 2024-04-01 17:56:22 +10:30
parent 9f0f029301
commit 6f7935e42f
1 changed files with 3 additions and 0 deletions
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common.scad
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@ -1,3 +1,6 @@
Guitar_Scale_Length_mm = 648;
ln2 = ln(2);
function log2(x) = ln(x)/ln2;
function fret_scale_length(n) = Guitar_Scale_Length_mm * 2^(-n/12);
function mm_to_fret_number(mm) = -log2(mm/Guitar_Scale_Length_mm)*12;
function lerp(start, end, amount) = start + (end-start)*amount;