protected override float ComputePixel(ref InstanceContext ctx)
{
var sd = SignedDistance.Infinite.Distance;
for (var i = 0; i < Shape.Count; ++i)
{
var minDistance = SignedDistance.Infinite;
EdgeSegment nearEdge = null;
double nearParam = 0;
foreach (var edge in Shape[i])
{
double param = 0;
var distance = edge.SignedDistance(ctx.P, ref param);
if (distance < minDistance)
{
minDistance = distance;
nearEdge = edge;
nearParam = param;
}
}
if (Math.Abs(minDistance.Distance) < Math.Abs(sd))
{
sd = minDistance.Distance;
ctx.Winding = -Windings[i];
}
nearEdge?.DistanceToPseudoDistance(ref minDistance, ctx.P, nearParam);
ContourSd[i] = new SingleDistance {
Dist = minDistance.Distance
};
ctx.UpdateDistance(Windings[i], minDistance.Distance);
}
return((float)(ComputeSd(Infinite, ref ctx).Dist / Range + 0.5));
}
protected override float ComputePixel(ref InstanceContext ctx)
{
double dummy = 0;
for (var i = 0; i < Shape.Count; ++i)
{
var minDistance = SignedDistance.Infinite;
foreach (var edge in Shape[i])
{
var distance = edge.SignedDistance(ctx.P, ref dummy);
if (distance < minDistance)
{
minDistance = distance;
}
}
ContourSd[i] = new SingleDistance {
Dist = minDistance.Distance
};
ctx.UpdateDistance(Windings[i], minDistance.Distance);
}
return((float)(ComputeSd(Infinite, ref ctx).Dist / Range + 0.5));
}
