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Diffstat (limited to 'util/smoothen.js')
-rw-r--r-- | util/smoothen.js | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/util/smoothen.js b/util/smoothen.js new file mode 100644 index 0000000..55ba23c --- /dev/null +++ b/util/smoothen.js @@ -0,0 +1,16 @@ +module.exports = function(tx, x, divisor) { + // Smoothly transitions givens X to TX using a given divisor. Rounds the + // amount moved. + + const move = (tx - x) / divisor + + if (move > 0.5) { + return x + Math.ceil(move) + } else if (move < -0.5) { + return x + Math.floor(move) + } else if (tx > 0) { + return Math.ceil(tx) + } else { + return Math.floor(tx) + } +} |