public MaterialSetOLD ProvideNext(ProviderContext context)
{
if (currentIndex > context.CycleLength)
{
currentIndex = 0;
}
var position = 1.0 / context.CycleLength * currentIndex;
var gradientStepSpan = GradientStepData.Sum(step => step.Offset);
var additivestepPercentage = 0d;
MaterialSetOLD interpolatedMaterialSet = MaterialPalette.Sets.BrownBrushSet;
if (position >= 1)
{
currentIndex++;
return(GradientStepData.Last().MaterialSet);
}
for (var x = 0; x <= GradientStepData.Count - 2; x++)
{
var stepPercentage = GradientStepData[x].Offset / gradientStepSpan;
var stepProgression = position - additivestepPercentage;
var stepProgressionPercentage = stepProgression / stepPercentage;
if (position >= additivestepPercentage && position < (additivestepPercentage + stepPercentage))
{
interpolatedMaterialSet = MediaExtensions.Interpolate(GradientStepData[x].MaterialSet,
GradientStepData[x + 1].MaterialSet, stepProgressionPercentage);
break;
}
additivestepPercentage += stepPercentage;
}
currentIndex++;
return(interpolatedMaterialSet);
}
private MaterialSet GetMaterialSetAtProgression(double progression)
{
var totalGradientSpan = GradientStepData.Sum(t => t.Offset);
if (progression <= 0)
{
return(GradientStepData.First().MaterialSet);
}
if (progression >= 1)
{
return(GradientStepData.Last().MaterialSet);
}
var currentOffset = 0d;
for (var x = 0; x <= GradientStepData.Count - 2; x++)
{
var startGradientStep = GradientStepData[x];
var endGradientStep = GradientStepData[x + 1];
var stepSpanPercentage = startGradientStep.Offset / totalGradientSpan;
var stepEndOffset = currentOffset + stepSpanPercentage;
if (progression >= currentOffset && progression < stepEndOffset)
{
var progressionThroughStep = progression.Map(currentOffset, stepEndOffset, 0d, 1d);
var materialSet = MediaExtensions.Interpolate(startGradientStep.MaterialSet,
endGradientStep.MaterialSet, progressionThroughStep);
return(materialSet);
}
currentOffset = stepEndOffset;
}
throw new ArgumentOutOfRangeException();
}
