From 87e2d7f75a23b2dc2aad5fadca2ccc5e6c94db23 Mon Sep 17 00:00:00 2001
From: Markus Quaritsch <markus.quaritsch@tugraz.at>
Date: Fri, 15 Apr 2016 12:59:45 +0200
Subject: [PATCH] improve lookup time for full-load curves
---
.../SimulationComponent/Data/FullLoadCurve.cs | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Data/FullLoadCurve.cs b/VectoCore/VectoCore/Models/SimulationComponent/Data/FullLoadCurve.cs
index 3be1412483..6b46f9eca9 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Data/FullLoadCurve.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Data/FullLoadCurve.cs
@@ -51,6 +51,8 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Data
[Required, ValidateObject] internal List<FullLoadCurveEntry> FullLoadEntries;
+ private SortedList<PerSecond, int> _quickLookup;
+
[Required] internal LookupData<PerSecond, Second> PT1Data;
/// <summary>
@@ -223,7 +225,22 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Data
if (angularVelocity > FullLoadEntries.Last().EngineSpeed) {
return FullLoadEntries.Count - 1;
}
- for (var index = 1; index < FullLoadEntries.Count; index++) {
+
+ if (_quickLookup == null) {
+ _quickLookup = new SortedList<PerSecond, int>();
+ var i = 10;
+ for (; i < FullLoadEntries.Count; i += 10) {
+ _quickLookup.Add(FullLoadEntries[i].EngineSpeed, Math.Max(1, i - 10));
+ }
+ _quickLookup.Add(FullLoadEntries.Last().EngineSpeed + 0.1.SI<PerSecond>(), Math.Max(1, i - 10));
+ }
+ var start = 1;
+ foreach (var lookup in _quickLookup.Where(lookup => angularVelocity < lookup.Key)) {
+ start = lookup.Value;
+ break;
+ }
+
+ for (var index = start; index < FullLoadEntries.Count; index++) {
if (angularVelocity >= FullLoadEntries[index - 1].EngineSpeed &&
angularVelocity <= FullLoadEntries[index].EngineSpeed) {
return index;
--
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