bugfixes

src/components/chart/RungBuilder.vue

@@ -7,7 +7,7 @@
       <v-text-field type="number" v-model="rungs"
                     density="compact" hide-details class="mx-1 my-2" variant="outlined"
                     label="Rungs"
-                    :color="color" :base-color="color" min="1"
+                    :color="color" :base-color="color" min="1" :max="MAX_RUNGS"
                     :disabled="rungsDisabled"
                     style="width: 4.5em;"
       />
@@ -92,6 +92,7 @@ function setEndpoints(a, b) {
   endpoints.value = [devectorize(a), devectorize(b)]
 }
 
+const MAX_RUNGS = 10 // todo remove arbitrary limit
 
 const rungs = computed({
   get() {
@@ -102,6 +103,8 @@ const rungs = computed({
       props.builder.rungs = 1
       return
     }
+    if (r>MAX_RUNGS)
+      r = MAX_RUNGS
     let [a,b] = endpoints.value
     a = vectorize(a)
     b = vectorize(b)