orderbuilding fixes for new line price semantics

src/components/chart/DiagonalBuilder.vue

@@ -136,9 +136,6 @@ function buildTranches() {
   const lb = _endpoints.value[1]
   const ws = weights.value
   const symbol = co.selectedSymbol
-  const inverted = symbol.inverted
-  const scale = 10 ** -symbol.decimals
-  const isMinimum = inverted === order.buy
   for (let i = 0; i < ws.length; i++) {
     const w = ws[i]
     const t = newTranche({fraction: w * MAX_FRACTION})
@@ -153,15 +150,7 @@ function buildTranches() {
     // console.log('tranche start/end',
     //     t.startTime === DISTANT_PAST ? 'PAST' : t.startTime,
     //     t.endTime === DISTANT_FUTURE ? 'FUTURE' : t.endTime)
-    if (inverted) {
-      // invert prices
-      line[1] = 1/line[1]
-      line[3] = 1/line[3]
-    }
-    // scale to pool decimals
-    line[1] *= scale
-    line[3] *= scale
-    applyLinePoints(t, isMinimum, ...line)
+    applyLinePoints(t, symbol, order.buy, ...line)
     tranches.push(t)
   }
   return tranches