Pixel-Composer/scripts/value_snap/value_snap.gml

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function value_snap_real(val, snap = 1) {
gml_pragma("forceinline")
return snap == 0? val : round(val / snap) * snap;
}
function value_snap(val, snap = 1) {
gml_pragma("forceinline")
if(!is_array(val))
return value_snap_real(val, snap);
var _val = [];
for( var i = 0, n = array_length(val); i < n; i++ )
_val[i] = value_snap(val[i], snap);
return _val;
}