public static xyYColour GetClosestXy(xyYColour xyYcolour, ObserverData observerData)
{
var meta = new LinqMetaData();
xyYColour closestColour = null;
double closestDistance = double.MaxValue;
foreach (xyYColour colour in observerData.ColourData.Keys)
{
double distance = ColourUtil.Delta3D(colour.x, colour.y, 0, xyYcolour.x, xyYcolour.y, 0, 8);
if (distance < closestDistance)
{
closestDistance = distance;
closestColour = xyYColour.FromxyY(colour.x, colour.y, colour.Y);
}
}
return(closestColour);
}
public static double GetWeightingFactor(xyYColour xyYControlCol,
double angle,
ColourAngleSet angleSet, ObserverData observerData)
{
//Get the closest angle
xyYColour closestAngleColour = null;
//TODO: Increase accuracy only if this whole colour system seems to be working
foreach (var colourAtAngle in angleSet)
{
if (ColourUtil.Delta(angle, colourAtAngle.Key) < 45)
{
closestAngleColour = colourAtAngle.Value;
}
}
double realDeltaDIff = ColourUtil.Delta3D(closestAngleColour.x, closestAngleColour.y, 0,
xyYControlCol.x, xyYControlCol.y, 0, 4);
return(1 / (realDeltaDIff / observerData.AverageRange));
}
public static IEnumerable <xyYColour> GetThreeClosestColours(xyYColour refColour, ObserverData observer)
{
var closest = new List <xyYColour>();
var orderedByDistance = observer.ColourData.Select(kvp => new
{
Colour = kvp.Key,
Distance =
ColourUtil.Delta3D(refColour.x, refColour.y, refColour.Y,
kvp.Key.x, kvp.Key.y, kvp.Key.Y, 8)
});
orderedByDistance = orderedByDistance.OrderBy(item => item.Distance);
return(orderedByDistance.Take(3).Select(item => item.Colour));
}
private static double GetWeightingFactor2(double distance, ObserverData observerData)
{
return(1 / (distance / observerData.AverageRange));
}
public static double GetWeight2(RGBColour rgbColourSource, RGBColour rgbColourCompare, ObserverData observerData)
{
XYZColour xyzColSource = ColourUtil.RGBtoXYZ(rgbColourSource);
xyYColour colAsxyYSource = xyYColour.FromXYZ(xyzColSource);
XYZColour xyzColCompare = ColourUtil.RGBtoXYZ(rgbColourCompare);
xyYColour colAsxyYCompare = xyYColour.FromXYZ(xyzColCompare);
//****Do calc****
double angle = ColourUtil.CalcAngle(colAsxyYSource.x, colAsxyYSource.y, colAsxyYCompare.x, colAsxyYCompare.y);
//NEW BRANCH: Get 3 closest xy colours
IEnumerable <xyYColour> closest3 = Interpolation.GetThreeClosestColours(colAsxyYSource, observerData);
double influenceA, influenceB, influenceC;
xyYColour pA = closest3.ElementAt(0);
xyYColour pB = closest3.ElementAt(1);
xyYColour pC = closest3.ElementAt(2);
Interpolation.GetInfluence(colAsxyYSource, pA, pB, pC, out influenceA, out influenceB, out influenceC);
xyYColour colourAtAngleA = GetClosestAngleColour(observerData.ColourData[pA], angle);
xyYColour colourAtAngleB = GetClosestAngleColour(observerData.ColourData[pB], angle);
xyYColour colourAtAngleC = GetClosestAngleColour(observerData.ColourData[pC], angle);
double distanceA = ColourUtil.Delta3D(pA.x, pA.y, 0, colourAtAngleA.x, colourAtAngleA.y, 0, 8);
double distanceB = ColourUtil.Delta3D(pB.x, pB.y, 0, colourAtAngleB.x, colourAtAngleB.y, 0, 8);
double distanceC = ColourUtil.Delta3D(pC.x, pC.y, 0, colourAtAngleC.x, colourAtAngleC.y, 0, 8);
double interpolatedDistance = Interpolation.GetInterpolatedDistance(distanceA, distanceB, distanceC, influenceA,
influenceB, influenceC);
return(GetWeightingFactor2(interpolatedDistance, observerData));
}
public static double GetWeight(RGBColour rgbColourSource, RGBColour rgbColourCompare, ObserverData observerData)
{
XYZColour xyzColSource = ColourUtil.RGBtoXYZ(rgbColourSource);
xyYColour colAsxyYSource = xyYColour.FromXYZ(xyzColSource);
XYZColour xyzColCompare = ColourUtil.RGBtoXYZ(rgbColourCompare);
xyYColour colAsxyYCompare = xyYColour.FromXYZ(xyzColCompare);
//****Do calc****
double angle = ColourUtil.CalcAngle(colAsxyYSource.x, colAsxyYSource.y, colAsxyYCompare.x, colAsxyYCompare.y);
xyYColour closestObserverSample = GetClosestXy(colAsxyYSource, observerData);
//NEW BRANCH: Get 3 closest xy colours
ColourAngleSet angleSet = observerData.ColourData[closestObserverSample];
return(GetWeightingFactor(closestObserverSample, angle, angleSet, observerData));
}
