use ‘tonic’ rather than ‘root’

i dunno, makes me seem like i know what i'm talking about. to me, at
least.

1 files changed, 13 insertions, 13 deletions

diff --git a/scale.mjs b/scale.mjs
index b781f14..045265b 100644
--- a/scale.mjs
+++ b/scale.mjs
@@ -8,15 +8,15 @@ export const chromaticScale = new Proxy(
     ['A', 'A#', 'B', 'C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#'],
     ringHandler);
 
-function scaleFromIntervals(root, intervals) {
-    const scaleIndex = chromaticScale.indexOf(root);
+function scaleFromIntervals(tonic, intervals) {
+    const scaleIndex = chromaticScale.indexOf(tonic);
     if (scaleIndex < 0) {
         return undefined;
     }
 
-    let scale = [root];
+    let scale = [tonic];
     let steps = 0;
-    let lastBase = root[0];
+    let lastBase = tonic[0];
     for (let i = 0; i < intervals.length; i++) {
         steps += intervals[i];
         const note = chromaticScale[scaleIndex + steps];
@@ -35,8 +35,8 @@ function scaleFromIntervals(root, intervals) {
 }
 
 class Scale {
-    constructor(root, intervals) {
-        this.scale = scaleFromIntervals(root, intervals);
+    constructor(tonic, intervals) {
+        this.scale = scaleFromIntervals(tonic, intervals);
         return new Proxy(this, {
             get(target, prop) {
                 if (prop in target) {
@@ -48,7 +48,7 @@ class Scale {
         });
     }
 
-    get root() {
+    get tonic() {
         return this.scale[0];
     }
 
@@ -70,14 +70,14 @@ class Scale {
     }
 }
 
-export function MajorScale(root) {
-    console.debug(`MajorScale(${root})`);
+export function MajorScale(tonic) {
+    console.debug(`MajorScale(${tonic})`);
     const intervals = [2, 2, 1, 2, 2, 2];
-    return new Scale(root, intervals);
+    return new Scale(tonic, intervals);
 }
 
-export function MinorScale(root) {
-    console.debug(`MinorScale(${root})`);
+export function MinorScale(tonic) {
+    console.debug(`MinorScale(${tonic})`);
     const intervals = [2, 1, 2, 2, 1, 2];
-    return new Scale(root, intervals);
+    return new Scale(tonic, intervals);
 }