massive Shape rework: keep both tvPoints/Props and ourPoints/Props; delegate model updates to subclasses; DCA/VLine working but Ladder/HLine not done.

src/misc.js

@@ -172,18 +172,8 @@ export function pairPrice(chainId, baseToken, quoteToken, price) {
 
 export const sleep = ms => new Promise(r => setTimeout(r, ms))
 
-export function builderDefaults(props, emit, defaults) {
-    let changed = false
-    for (const k in defaults)
-        if (props.builder[k] === undefined) {
-            props.builder[k] = defaults[k] instanceof Function ? defaults[k]() : defaults[k]
-            changed = true
-        }
-    if (changed)
-        emit('update:builder', props.builder)
-}
-
 export function uuid() {
+    // noinspection JSUnresolvedReference
     return crypto.randomUUID();
 }
 
@@ -204,7 +194,7 @@ const colorRanges = {
     sell: ['#CC0033', '#CCCC33'],
 }
 
-export function lineColor(buy, index) {
+export function sideColor(buy, index) {
     const range = buy ? colorRanges.buy : colorRanges.sell
     const a = new Color(range[0]).rgb()
     const b = new Color(range[1]).rgb()
@@ -229,3 +219,24 @@ export function unique(arr) {
     }
     return a;
 }
+
+export function linspace(a, b, n) {
+    if (n===1) return [(a+b)/2]  // single line
+    const spacing = (b - a) / (n - 1)
+    // console.log('spacing', a, b)
+    const result = []
+    for (let i = 0; i < n; i++)
+        result.push(a + i * spacing)
+    return result;
+}
+
+export function intervalToSeconds(interval) {
+    if (interval.endsWith('T'))
+        throw Error('Tick intervals not supported')
+    return interval.endsWith('M') ? 30 * 24 * 60 * 60
+         : interval.endsWith('W') ?  7 * 24 * 60 * 60
+         : interval.endsWith('D') ?      24 * 60 * 60
+         : interval.endsWith('S') ?                 1
+         :                                         60  // if no unit char, then it's minutes
+}
+