public static LevelDictionary <PointDrift> GetDesignBoundaryCornerDrifts(LevelDataDictionary <RigidAnalysis> analyses)
{
var drifts = new LevelDictionary <PointDrift>();
List <BuildingLevelLateral2> sortedLevels =
analyses.Select(l => l.Value.LateralLevel).OrderBy(l => l.Level.Elevation).ToList();
for (var i = 0; i < sortedLevels.Count; i++)
{
BuildingLevel level = sortedLevels[i].Level;
RigidAnalysis analysis = analyses[level];
List <PointDrift> driftsAtLevel =
DisplacementsWithUnknownDrifts(level, analysis.Responses.NodalLoadCaseResults.Values.SelectMany(r => r));
var storyHeight = sortedLevels[i].Height;
if (i == 0)
{
// Lowest level; compare to ground
driftsAtLevel.ForEach(d =>
{
d.Drift = (Unitless)Result.Abs(d.Displacement / storyHeight);
d.CoordinateBelow = d.Coordinate;
d.DisplacementBelow = new Length(0, LengthUnit.Inch);
});
}
else
{
// Elevated level; compare to level below
List <PointDrift> driftsAtLevelBelow = drifts[sortedLevels[i - 1].Level];
driftsAtLevel.ForEach(d =>
{
PointDrift driftBelow = d.GetMatchingDriftAtLevelBelow(driftsAtLevelBelow);
d.Drift = (Unitless)Result.Abs((d.Displacement - driftBelow.Displacement) / storyHeight);
d.CoordinateBelow = driftBelow.Coordinate;
d.DisplacementBelow = driftBelow.Displacement;
});
}
drifts.Add(level, driftsAtLevel);
}
return(drifts);
}
/// <summary>
/// Gets matching drift for an unsorted collection of Point Drifts, matching according to Load Case and Direction
/// </summary>
/// <param name="driftsAtLevelBelow"></param>
/// <returns></returns>
public PointDrift GetMatchingDriftAtLevelBelow(IEnumerable <PointDrift> driftsAtLevelBelow)
{
List <PointDrift> driftsToCompare =
driftsAtLevelBelow.Where(d => d.LoadCase == LoadCase && d.Direction == Direction).ToList();
PointDrift closest = null;
var closestDistance = Double.PositiveInfinity;
for (var i = 0; i < driftsToCompare.Count; i++)
{
var other = driftsToCompare[i];
var distance = Coordinate.DistanceTo(other.Coordinate);
if (distance < closestDistance)
{
closest = other;
closestDistance = distance;
}
}
return(closest);
}
public static bool PredominantLoadDirectionCoincidesWithDriftDirection(PointDrift drift)
{
switch (drift.Direction)
{
case LateralDirection.X:
switch (drift.LoadCase.PredominantDirection)
{
case PredominantDirection.X:
case PredominantDirection.Both:
return(true);
case PredominantDirection.Y:
return(false);
default:
throw new InvalidEnumArgumentException();
}
case LateralDirection.Y:
switch (drift.LoadCase.PredominantDirection)
{
case PredominantDirection.X:
return(false);
case PredominantDirection.Y:
case PredominantDirection.Both:
return(true);
default:
throw new InvalidEnumArgumentException();
}
default:
throw new InvalidEnumArgumentException();
}
}
