Rename del-hue to use theta, fix warning logic

nearest.js

@@ -184,7 +184,7 @@ const mathDefinitions = {
       \vec{\mu}\left(P\right) &= \frac{1}{\left|P\right|}\sum_{p\in P}{\vec{p}} \\
       I\left(P\right) &= \frac{1}{\left|P\right|}\sum_{p\in P}{\left|\left|\vec{p}\right|\right|^2} \\
       \vec{x}_{\perp} &= \text{oproj}_{\left\{\vec{J}, \vec{L}\right\}}{\vec{x}} \\
-      \Delta{H}\left(P\right) &= \angle \left(\vec{q}_{\perp}, \vec{\mu}\left(P\right)_{\perp} \right)
+      \Delta{\theta}\left(P\right) &= \angle \left(\vec{q}_{\perp}, \vec{\mu}\left(P\right)_{\perp} \right)
     \end{aligned}
   `,
   "k-definition": String.raw`
@@ -208,7 +208,7 @@ const mathDefinitions = {
       \text{RMS}_P\left(q\right),
       \angle \left(\vec{q}, \vec{\mu}\left(P\right)\right),
       \left|\left| \vec{q} - \vec{\mu}\left(P\right) \right|\right|,
-      \Delta{H}\left(P\right)
+      \Delta{\theta}\left(P\right)
     \right)
   `,
 };
@@ -421,7 +421,7 @@ const onCustomControlsChanged = skipScore => {
 const checkClusterMeanWarning = () => {
   const warning = getClusterMeanWarning();
   const unhidden = warning.getAttribute("class").replaceAll("hide", "");
-  if (state.meanArgument !== 0 && state.metric !== 1 && state.metric !== 2) {
+  if (state.meanArgument !== 0 && state.metric === 0) {
     warning.setAttribute("class", unhidden);
   } else {
     warning.setAttribute("class", unhidden + " hide");