/// <summary>
/// Precalculates speed factors for all the given profiles.
/// </summary>
public void CalculateFor(params Profile[] profiles)
{
lock (this)
{ // don't allow multiple threads to fill this cache at the same time.
var newEdgeProfileFactors = new Dictionary <string, FactorAndSpeed[]>(_edgeProfileFactors);
var edgeProfileFactors = new FactorAndSpeed[profiles.Length][];
for (var p = 0; p < profiles.Length; p++)
{
edgeProfileFactors[p] = new FactorAndSpeed[(int)_db.EdgeProfiles.Count];
}
for (uint edgeProfile = 0; edgeProfile < _db.EdgeProfiles.Count; edgeProfile++)
{
var edgeProfileTags = _db.EdgeProfiles.Get(edgeProfile);
for (var p = 0; p < profiles.Length; p++)
{
edgeProfileFactors[p][edgeProfile]
= profiles[p].FactorAndSpeed(edgeProfileTags);
}
}
for (var p = 0; p < profiles.Length; p++)
{
newEdgeProfileFactors[profiles[p].FullName] = edgeProfileFactors[p];
}
_edgeProfileFactors = newEdgeProfileFactors;
}
}
/// <summary>
/// Returns an isacceptable function using the cached data.
/// </summary>
public Func <GeometricEdge, bool> GetIsAcceptable(bool verifyCanStopOn, List <uint> closures, params IProfileInstance[] profileInstances)
{
if (!this.ContainsAll(profileInstances))
{
throw new ArgumentException("Not all given profiles are supported.");
}
var cachedFactors = new FactorAndSpeed[profileInstances.Length][];
for (var p = 0; p < profileInstances.Length; p++)
{
cachedFactors[p] = _edgeProfileFactors[profileInstances[p].Profile.FullName];
}
return((edge) =>
{
// first check for closure
if (closures.Contains(edge.Id))
{
return false;
}
float distance;
ushort edgeProfileId;
Data.Edges.EdgeDataSerializer.Deserialize(edge.Data[0],
out distance, out edgeProfileId);
for (var i = 0; i < profileInstances.Length; i++)
{
var cachedFactor = cachedFactors[i][edgeProfileId];
if (cachedFactor.Value <= 0)
{ // edge is not accessible to this profile.
return false;
}
if (verifyCanStopOn)
{ // check for a stopping point.
if (!cachedFactor.CanStopOn())
{ // can't use this edge as stopping point.
return false;
}
}
if (profileInstances[i].IsConstrained(cachedFactor.Constraints))
{ // edge is constrained, vehicle too heavy or too big for example.
return false;
}
}
return true;
});
}
/// <summary>
/// Converts a factor definition for the given factor and speed.
/// </summary>
public static Factor ToFactor(this FactorAndSpeed factorAndSpeed)
{
if (factorAndSpeed.Direction >= 3)
{
return(new Profiles.Factor()
{
Direction = (short)(factorAndSpeed.Direction - 3),
Value = factorAndSpeed.Value
});
}
return(new Profiles.Factor()
{
Direction = factorAndSpeed.Direction,
Value = factorAndSpeed.Value
});
}
/// <summary>
/// Converts a speed definition for the given factor and speed.
/// </summary>
public static Speed ToSpeed(this FactorAndSpeed factorAndSpeed)
{
if (factorAndSpeed.Direction >= 3)
{
return(new Profiles.Speed()
{
Direction = (short)(factorAndSpeed.Direction - 3),
Value = 1.0f / factorAndSpeed.SpeedFactor
});
}
return(new Profiles.Speed()
{
Direction = factorAndSpeed.Direction,
Value = 1.0f / factorAndSpeed.SpeedFactor
});
}
/// <summary>
/// Precalculates speed factors for all the given profiles.
/// </summary>
public void CalculateFor(params Profile[] profiles)
{
var edgeProfileFactors = new FactorAndSpeed[profiles.Length][];
for (var p = 0; p < profiles.Length; p++)
{
edgeProfileFactors[p] = new FactorAndSpeed[(int)_db.EdgeProfiles.Count];
}
for (uint edgeProfile = 0; edgeProfile < _db.EdgeProfiles.Count; edgeProfile++)
{
var edgeProfileTags = _db.EdgeProfiles.Get(edgeProfile);
for (var p = 0; p < profiles.Length; p++)
{
edgeProfileFactors[p][edgeProfile]
= profiles[p].FactorAndSpeed(edgeProfileTags);
}
}
for (var p = 0; p < profiles.Length; p++)
{
_edgeProfileFactors[profiles[p].FullName] = edgeProfileFactors[p];
}
}
/// <summary>
/// Converts a factor definition for the given factor and speed.
/// </summary>
public static bool CanStopOn(this FactorAndSpeed factorAndSpeed)
{
return(factorAndSpeed.Direction < 3);
}
/// <summary>
/// Get a function to calculate properties for a set given edge attributes.
/// </summary>
/// <returns></returns>
public sealed override FactorAndSpeed FactorAndSpeed(IAttributeCollection attributes)
{
lock (_script)
{
// build lua table.
_attributesTable.Clear();
if (attributes == null || attributes.Count == 0)
{
return(Profiles.FactorAndSpeed.NoFactor);
}
foreach (var attribute in attributes)
{
_attributesTable.Set(attribute.Key, DynValue.NewString(attribute.Value));
}
// call factor_and_speed function.
_resultsTable.Clear();
_script.Call(_function, _attributesTable, _resultsTable);
// get the results.
var result = new FactorAndSpeed();
float val;
if (!_resultsTable.TryGetFloat("speed", out val))
{
val = 0;
}
if (val == 0)
{
return(Profiles.FactorAndSpeed.NoFactor);
}
result.SpeedFactor = 1.0f / (val / 3.6f); // 1/m/s
if (_metric == ProfileMetric.TimeInSeconds)
{ // use 1/speed as factor.
result.Value = result.SpeedFactor;
}
else if (_metric == ProfileMetric.DistanceInMeters)
{ // use 1 as factor.
result.Value = 1;
}
else
{ // use a custom factor.
if (!_resultsTable.TryGetFloat("factor", out val))
{
val = 0;
}
result.Value = val;
}
if (!_resultsTable.TryGetFloat("direction", out val))
{
val = 0;
}
result.Direction = (short)val;
bool boolVal;
if (!_resultsTable.TryGetBool("canstop", out boolVal))
{ // default stopping everywhere.
boolVal = true;
}
if (!boolVal)
{
result.Direction += 3;
}
return(result);
}
}
