protected ClusterFit(ColourSet colours, SquishOptions flags) : base(colours, flags)
{
// Set the iteration count.
this._IterationCount = flags.HasFlag(SquishOptions.ColourIterativeClusterFit) ? MaxIterations : 1;
// Initialise the best error.
this._BestError = new Vector4(float.MaxValue);
// Initialize the metric
var perceptual = flags.HasFlag(SquishOptions.ColourMetricPerceptual);
if (perceptual)
{
this._Metric = new Vector4(0.2126f, 0.7152f, 0.0722f, 0.0f);
}
else
{
this._Metric = new Vector4(1.0f);
}
// Get the covariance matrix.
var covariance = Sym3x3.ComputeWeightedCovariance(colours.Count, colours.Points, colours.Weights);
// Compute the principle component
this._Principle = Sym3x3.ComputePrincipledComponent(covariance);
}
