/// <summary>
/// Retrieve the perpendicular angle to this line.
/// </summary>
/// <param name="angle">The angle you want the perpendicular angle to face.</param>
/// <returns>The perpendicular angle relative to the angle given.</returns>
public float PerpendicularAngle(float angle)
{
var d = (End - Start);
var a = Mathf.Angle(new Vector2(-d.Y, d.X), new Vector2(d.Y, -d.X));
return((Mathf.AngleDifference(a, angle) <= Mathf.PiOver2) ? a : (a + Mathf.Pi));
}
public float ReflectionAngle(float angle, float perpendicularAngle)
{
float reflectionAngle = perpendicularAngle,
angleDif = Mathf.AngleDifference(angle, MathHelper.WrapAngle(perpendicularAngle + Mathf.Pi));
float b;
if (Mathf.AngleDifference((b = (perpendicularAngle + angleDif)), MathHelper.WrapAngle(angle + Mathf.Pi)) <= Mathf.PiOver1024)
{
reflectionAngle -= angleDif;
}
else
{
reflectionAngle = b;
}
return(reflectionAngle);
}
public void AddOccluder(Line line)
{
_occluders.Add(line);
if (!(((Vector2.Distance(line.Start, Position) <= Radius) || (Vector2.Distance(line.End, Position) <= Radius)) || line.Intersects(_segments[0].Line) || line.Intersects(_segments[1].Line) || line.Intersects(_segments[2].Line) || line.Intersects(_segments[3].Line)))
{
return;
}
if (_fov != 0)
{
var fov = (_fov / 2);
bool iS4b = false, iS5b = false;
Vector2 iS4i = Vector2.Zero, iS5i = Vector2.Zero;
if (iS4b = _segments[4].Line.Intersects(line, ref iS4i))
{
Mathf.Move(ref iS4i, Angle, -Lighting.PxOffset);
_segments[4].Line.End = iS4i;
}
if (iS5b = _segments[5].Line.Intersects(line, ref iS5i))
{
Mathf.Move(ref iS5i, Angle, -Lighting.PxOffset);
_segments[5].Line.End = iS5i;
}
if (!(((Mathf.AngleDifference(Mathf.Angle(Position, line.Start), Angle) <= fov) || (Mathf.AngleDifference(Mathf.Angle(Position, line.End), Angle) <= fov)) ||
iS4b || iS5b))
{
return;
}
}
var segment = new Segment(line);
segment.P1 = new EndPoint(segment);
segment.P2 = new EndPoint(segment);
_segments.Add(segment);
_endpoints.Add(segment.P1);
_endpoints.Add(segment.P2);
}
