public override void ComputeDistancesFrom(
ref Point point, out double minimumResult, out double maximumResult)
{
minimumResult = double.MaxValue;
maximumResult = double.MinValue;
Rectangle region = Region;
Point topLeft = new Point(region.Left, region.Top);
Point topRight = new Point(region.Right, region.Top);
Point bottomRight = new Point(region.Right, region.Bottom);
Point bottomLeft = new Point(region.Left, region.Bottom);
double leftEdge = point.SquaredDistanceTo(topLeft, bottomLeft);
double topEdge = point.SquaredDistanceTo(topLeft, topRight);
double rightEdge = point.SquaredDistanceTo(topRight, bottomRight);
double bottomEdge = point.SquaredDistanceTo(bottomLeft, bottomRight);
minimumResult = Math.Min(minimumResult, leftEdge);
minimumResult = Math.Min(minimumResult, topEdge);
minimumResult = Math.Min(minimumResult, rightEdge);
minimumResult = Math.Min(minimumResult, bottomEdge);
maximumResult = Math.Max(maximumResult, leftEdge);
maximumResult = Math.Max(maximumResult, topEdge);
maximumResult = Math.Max(maximumResult, rightEdge);
maximumResult = Math.Max(maximumResult, bottomEdge);
}
public override void Query(ref Point point, out Sample.Location sample)
{
sample.Distance = float.MaxValue;
FullLine selectedLine = _Lines[0];
if(_Lines.Length > 1)
{
foreach(FullLine line in _Lines)
{
Point point1 = line.Point1;
Point point2 = line.Point2;
float newDistance = point.SquaredDistanceTo(point1, point2);
if(newDistance < sample.Distance)
{
sample.Distance = newDistance;
selectedLine = line;
}
}
}
sample.Distance = point.DistanceTo(
selectedLine.Point1, selectedLine.Point2, out sample.Intersection);
}