/***************************************************/
/**** Private Methods ****/
/***************************************************/
private static List <Cvalue> EvaluateCvalue(Audience audience, CvalueSettings settings, Polyline playingArea, Point focalPoint = null)
{
List <Cvalue> results = new List <Cvalue>();
if (audience.Spectators.Count == 0)
{
return(results);
}
SetKDTree(audience);
m_CvalueSettings = settings;
m_FarClippingPlaneDistance = settings.FarClippingPlaneDistance;
if (focalPoint == null)
{
focalPoint = new Point();
}
foreach (Spectator s in audience.Spectators)
{
m_CvalueExists = true;
Point focal = GetFocalPoint(s, playingArea, focalPoint);
double cvalue = GetCValue(s, focal);
results.Add(CvalueResult(s, focal, cvalue));
}
return(results);
}
public static List <List <Cvalue> > CvalueAnalysis(List <Audience> audience, CvalueSettings settings, Polyline focalPolyline)
{
List <List <Cvalue> > results = new List <List <Cvalue> >();
foreach (Audience a in audience)
{
results.Add(EvaluateCvalue(a, settings, focalPolyline));
}
return(results);
}
public static List <Cvalue> CvalueAnalysis(this Audience audience, CvalueSettings settings, Polyline playingArea, Point focalPoint = null)
{
if (audience == null || settings == null || playingArea == null)
{
BH.Engine.Reflection.Compute.RecordError("Cannot query the CvalueAnalysis if the audience, settings, or playing area are null.");
return(new List <Cvalue>());
}
List <Cvalue> results = EvaluateCvalue(audience, settings, playingArea, focalPoint);
return(results);
}
/***************************************************/
/**** Private Methods ****/
/***************************************************/
private static List <Cvalue> EvaluateCvalue(Audience audience, CvalueSettings settings, Polyline focalPolyline)
{
List <Cvalue> results = new List <Cvalue>();
KDTree <Spectator> spectatorTree = SetKDTree(audience);
foreach (Spectator s in audience.Spectators)
{
bool cvalueExists = true;
Vector rowVector = Geometry.Query.CrossProduct(Vector.ZAxis, s.Head.PairOfEyes.ViewDirection);
Spectator infront = GetSpecInfront(s, spectatorTree);
double riserHeight = 0;
double rowWidth = 0;
Point focal = new Point();
if (infront == null)
{
//no spectator infront
cvalueExists = false;
}
else
{
//check the infront and current are on parallel rows
if (infront.Head.PairOfEyes.ViewDirection != s.Head.PairOfEyes.ViewDirection)
{
cvalueExists = false;
}
}
if (cvalueExists)
{
riserHeight = s.Head.PairOfEyes.ReferenceLocation.Z - infront.Head.PairOfEyes.ReferenceLocation.Z;
rowWidth = GetRowWidth(s, infront, rowVector);
focal = GetFocalPoint(rowVector, s, settings.FocalMethod, focalPolyline);
}
results.Add(CvalueResult(s, focal, riserHeight, rowWidth, cvalueExists, rowVector, settings));
}
return(results);
}
public static List <Cvalue> CvalueAnalysis(Audience audience, CvalueSettings settings, Polyline focalPolyline)
{
List <Cvalue> results = EvaluateCvalue(audience, settings, focalPolyline);
return(results);
}
/***************************************************/
private static Cvalue CvalueResult(Spectator s, Point focal, double riser, double rowWidth, bool cvalueExists, Vector rowV, CvalueSettings settings)
{
Cvalue result = new Cvalue();
Vector d = s.Head.PairOfEyes.ReferenceLocation - focal;
result.AbsoluteDist = d.Length();
result.Focalpoint = focal;
result.HorizDist = Geometry.Create.Vector(d.X, d.Y, 0).Length();
result.HeightAbovePitch = s.Head.PairOfEyes.ReferenceLocation.Z - focal.Z;
if (!cvalueExists || riser > settings.RowTolerance)//
{
result.CValue = settings.DefaultCValue;
}
else
{
result.CValue = (result.HorizDist - rowWidth) * (result.HeightAbovePitch / result.HorizDist) - (result.HeightAbovePitch - riser);
}
return(result);
}