public StripedPath this[int i] {
get {
if (dbugSettings.makeVariations)
{
return(new StripedPath()
{
stripeField = debugStripeField(i),
path = paths[i]
});
}
StripeField sfield = null;
if (diamondCalculator.getStripeFieldIterator(new PathData(paths[i]), out sfield))
{
return(new StripedPath()
{
stripeField = sfield,
path = paths[i],
});
}
return(new StripedPath());
}
}
//CONSIDER: analyze all of the paths and gen StripeFields based on some global data
public bool getStripeFieldIterator(PathData pdata, out StripeField sfield)
{
float value = ColorUtil.valueFromUIntColor(pdata.path.fillColor);
float lightRatio = stripeFieldConfig.lightAreaRatio(value);
int lineCount = stripeFieldConfig.lineCountForLightRatio(lightRatio);
float darkRatio = 1f - lightRatio;
if (lineCount == 0)
{
sfield = new StripeField(); return(false);
}
Vector2f primary = pdata.bounds.tallerThanWide ? pdata.highest - pdata.lowest : pdata.rightMost - pdata.leftMost;
float priAngle = Mathf.PI * 2f / 3f; // Mathf.Atan2(primary.y, primary.x);
priAngle = Mathf.Abs(priAngle);
Vector2f sz = pdata.bounds.size;
float diamondAngle = Mathf.PI / 6f; // priAngle + pdata.bounds.smallerOverLargerDimension * Mathf.PI / 2.5f; //TODO: determine angle somehow
// make sure diamond is sub 90 degrees?
Vector2f secondary = new Vector2f(Mathf.Cos(diamondAngle), Mathf.Sin(diamondAngle));
float targetWidth = stripeFieldConfig.targetWidthForValue(darkRatio);
float targetArea = targetWidth * targetWidth; // stripeFieldConfig.referenceArea(lightRatio);
if (targetArea < Mathf.Epsilon)
{
sfield = new StripeField()
{
angleRadians = priAngle,
interval = stripeFieldConfig.lineWidth
};
return(true);
}
float mult = Mathf.Sqrt(targetArea / Mathf.Max(Mathf.Abs(secondary.y), 0.0001f));
primary.Normalize();
float interval = secondary.y * mult;
secondary = new Matrix2f(priAngle) * secondary;
StripeField _next = new StripeField()
{
angleRadians = diamondAngle,
interval = interval
};
if (dbugSettings.hatchCount == 1)
{
sfield = _next;
return(true);
}
sfield = new StripeField()
{
angleRadians = priAngle,
interval = interval,
next = _next
};
return(true);
}