public override bool Intersects(MMath.LineSegment sightLine)
{
//if (MMath.Rectangle.RectContainsPoint(this.Rect, sightLine.Start))
if (this.Rect.X != sightLine.Start.X && this.Rect.Y != sightLine.Start.Y && this.Rect.Contains(sightLine.Start))
{
return(false);
}
// If end point is inside this rectangle then we know based on the type what it is
if (MMath.Rectangle.RectContainsPoint(this.Rect, sightLine.End))
{
return((this.Type == BlockerType.BlocksLookingInto) ? true : false);
}
return(sightLine.Intersects(this.Rect));
}
public OcclusionLevel GetOcclusion(PointF fromPoint, PointF targetPoint)
{
MMath.LineSegment l = new MMath.LineSegment(fromPoint, targetPoint);
OcclusionLevel result = OcclusionLevel.Visible;
foreach (var blocker in Blockers)
{
if (blocker.Intersects(l))
{
result = (OcclusionLevel)Math.Max((int)result, (int)blocker.OcclusionLevel);
if (result == OcclusionLevel.Obscured)
{
return(result);
}
}
}
return(result);
}
public LineVisibilityBlocker(MMath.LineSegment line, Visibility.OcclusionLevel occlusionLevel = Visibility.OcclusionLevel.Obscured) : base(occlusionLevel)
{
this.Line = line;
}
public abstract bool Intersects(MMath.LineSegment sightLine);
