public async Task <TrussBridgeOutputs> Handler(TrussBridgeInputs args, ILambdaContext context)
{
if (this.store == null)
{
// Preload the dependencies (if they exist),
// so that they are available during model deserialization.
var asmLocation = this.GetType().Assembly.Location;
var asmDir = Path.GetDirectoryName(asmLocation);
var asmName = Path.GetFileNameWithoutExtension(asmLocation);
var depPath = Path.Combine(asmDir, $"{asmName}.Dependencies.dll");
if (File.Exists(depPath))
{
Console.WriteLine($"Loading dependencies from assembly: {depPath}...");
Assembly.LoadFrom(depPath);
Console.WriteLine("Dependencies assembly loaded.");
}
this.store = new S3ModelStore <TrussBridgeInputs>(RegionEndpoint.USWest1);
}
var l = new InvocationWrapper <TrussBridgeInputs, TrussBridgeOutputs>(store, TrussBridge.Execute);
var output = await l.InvokeAsync(args);
return(output);
}
/// <summary>
/// A basic truss bridge.
/// </summary>
/// <param name="model">The input model.</param>
/// <param name="input">The arguments to the execution.</param>
/// <returns>A TrussBridgeOutputs instance containing computed results and the model with any new elements.</returns>
public static TrussBridgeOutputs Execute(Dictionary <string, Model> inputModels, TrussBridgeInputs input)
{
var model = new Model();
var lightConcrete = new Material("Light Concrete", Colors.White, 0.1, 0.0);
var elevatedPath = new Line(input.Path.Start, new Vector3(input.Path.End.X, input.Path.End.Y, input.EndElevation));
var rep = new Representation(new List <SolidOperation>()
{
new Sweep(Polygon.Rectangle(new Vector3(-input.Width / 2, 0.1), new Vector3(input.Width / 2, 0.2)), elevatedPath, 0, 0, 0, false)
});
var bridgeDeck = new GeometricElement(new Transform(), lightConcrete, rep, false, Guid.NewGuid(), "Bridge Deck");
model.AddElement(bridgeDeck);
var totalSteelLength = 0.0;
var primaryProfile = WideFlangeProfileServer.Instance.GetProfileByType(WideFlangeProfileType.W14x22);
var secondaryProfile = WideFlangeProfileServer.Instance.GetProfileByType(WideFlangeProfileType.W8x48);
// Girders
var l = elevatedPath.Length();
var right = elevatedPath.Offset(input.Width / 2, false);
var upperRight = new Line(right.Start + new Vector3(0, 0, input.Height), right.End + new Vector3(0, 0, input.Height));
var left = elevatedPath.Offset(-input.Width / 2, false);
var upperLeft = new Line(left.Start + new Vector3(0, 0, input.Height), left.End + new Vector3(0, 0, input.Height));
totalSteelLength += l * 4;
model.AddElement(new Beam(right, MatchProfileWithOverride(right, primaryProfile, input.Overrides)));
model.AddElement(new Beam(left, MatchProfileWithOverride(left, primaryProfile, input.Overrides)));
model.AddElement(new Beam(upperRight, MatchProfileWithOverride(upperRight, primaryProfile, input.Overrides)));
model.AddElement(new Beam(upperLeft, MatchProfileWithOverride(upperLeft, primaryProfile, input.Overrides)));
Transform tPrev = null;
for (var i = 0.0; i <= l; i += 3.0)
{
// Rectangular frames
var u = i / l;
var t = elevatedPath.TransformAt(u);
t.Move(new Vector3(0, 0, input.Height / 2));
var p = Polygon.Rectangle(input.Width, input.Height).TransformedPolygon(t);
foreach (var s in p.Segments())
{
model.AddElement(new Beam(s, MatchProfileWithOverride(s, secondaryProfile, input.Overrides)));
totalSteelLength += s.Length();
}
// Bracing
if (i > 0)
{
var a = t.OfPoint(new Vector3(input.Width / 2, input.Height / 2));
var b = tPrev.OfPoint(new Vector3(input.Width / 2, -input.Height / 2));
var braceRightCl = new Line(a, b);
var braceRightProfile = MatchProfileWithOverride(braceRightCl, secondaryProfile, input.Overrides);
var rightBrace = new Beam(braceRightCl, braceRightProfile);
model.AddElement(rightBrace);
totalSteelLength += rightBrace.Curve.Length();
var c = t.OfPoint(new Vector3(-input.Width / 2, input.Height / 2));
var d = tPrev.OfPoint(new Vector3(-input.Width / 2, -input.Height / 2));
var braceLeftCl = new Line(a, b);
var braceLeftProfile = MatchProfileWithOverride(braceRightCl, secondaryProfile, input.Overrides);
var leftBrace = new Beam(braceLeftCl, braceLeftProfile);
model.AddElement(leftBrace);
totalSteelLength += leftBrace.Curve.Length();
}
tPrev = t;
}
// Abutments
var pathDir = elevatedPath.Direction();
foreach (var location in input.AbutmentLocations)
{
var distance = pathDir.Dot(location - elevatedPath.Start);
var p = elevatedPath.Start + pathDir * distance;
var depthLine = new Line(new Vector3(p.X, p.Y, -5), p);
model.AddElement(new ModelCurve(depthLine));
var abutmentShape = Polygon.Rectangle(input.Width + 2, 2);
var abutmentT = elevatedPath.TransformAt(distance / l);
var finalT = new Transform(depthLine.Start, abutmentT.XAxis, Vector3.ZAxis);
var mass = new Mass(abutmentShape, depthLine.Length(), lightConcrete, finalT);
model.AddElement(mass);
}
var output = new TrussBridgeOutputs(input.Path.Length(), totalSteelLength);
output.Model = model;
return(output);
}
