public static bool Overlap(LineF line, CircleF p)
{
var apX = p.Point.X - line.Start.X;
var apY = p.Point.Y - line.Start.Y;
var abX = line.End.X - line.Start.X;
var abY = line.End.Y - line.Start.Y;
var abLength = (abX * abX + abY * abY);
var dot = apX * abX + apY * abY;
var t = dot / abLength;
if (t <= 0)
return ((apX * apX) + (apY * apY) < p.Radius * p.Radius);
else if (t >= 1)
return ((line.End.X - p.Point.X) * (line.End.X - p.Point.X) + (line.End.Y - p.Point.Y) * (line.End.Y - p.Point.Y) < p.Radius * p.Radius);
else
return ((apX - abX * t) * (apX - abX * t) + (apY - abY * t) * (apY - abY * t) < p.Radius * p.Radius);
}
public bool Overlap(CircleF circle)
{
return Overlap(this, circle);
}
public bool Overlap(CircleF circle)
{
return(Overlap(this, circle.Point, circle.Radius));
}
public bool Overlap(CircleF circle)
{
return Overlap(this, circle.Point, circle.Radius);
}
public static bool Overlap(CircleF circle, Vector2 p, float raduis)
{
return Vector2.DistanceSquared(circle.Point, p) < (circle.Radius + raduis) * (circle.Radius + raduis);
}
public bool Overlap(CircleF circle)
{
return(Overlap(this, circle));
}
public static bool Overlap(CircleF circle, Vector2 p, float raduis)
{
return(Vector2.DistanceSquared(circle.Point, p) < (circle.Radius + raduis) * (circle.Radius + raduis));
}
