public void Insert(int index, LineSegment segment)
{
Insert(index, segment.end);
Insert(index, segment.start);
}
public static Shape CreateLine(LineSegment segment)
{
Shape s = new Shape();
s._vertices.Add(segment.start);
s._vertices.Add(segment.end);
return s;
}
// TODO: return ALL hit points (including ends if they are within the bounds of the AABB)
public static bool IntersectsLine(AABB a, Vector2 lineStart, Vector2 lineEnd, out Vector2 hitPoint)
{
LineSegment te, re, be, le;
te = new LineSegment(new Vector2(a.Left, a.Top), new Vector2(a.Right, a.Top));
re = new LineSegment(new Vector2(a.Right, a.Top), new Vector2(a.Right, a.Bottom));
be = new LineSegment(new Vector2(a.Right, a.Bottom), new Vector2(a.Left, a.Bottom));
le = new LineSegment(new Vector2(a.Left, a.Bottom), new Vector2(a.Left, a.Top));
return (Collider.LinesIntersect(lineStart, lineEnd, te.start, te.end, out hitPoint) ||
Collider.LinesIntersect(lineStart, lineEnd, re.start, re.end, out hitPoint) ||
Collider.LinesIntersect(lineStart, lineEnd, be.start, be.end, out hitPoint) ||
Collider.LinesIntersect(lineStart, lineEnd, le.start, le.end, out hitPoint));
}
public static bool IntersectsLine_Fast(AABB a, Vector2 lineStart, Vector2 lineEnd)
{
if (a.Intersects(lineStart) || a.Intersects(lineEnd)) { return true; }
LineSegment te, re, be, le;
te = new LineSegment(new Vector2(a.Left, a.Top), new Vector2(a.Right, a.Top));
re = new LineSegment(new Vector2(a.Right, a.Top), new Vector2(a.Right, a.Bottom));
be = new LineSegment(new Vector2(a.Right, a.Bottom), new Vector2(a.Left, a.Bottom));
le = new LineSegment(new Vector2(a.Left, a.Bottom), new Vector2(a.Left, a.Top));
return (Collider.LinesIntersect_Fast(lineStart, lineEnd, te.start, te.end) ||
Collider.LinesIntersect_Fast(lineStart, lineEnd, re.start, re.end) ||
Collider.LinesIntersect_Fast(lineStart, lineEnd, be.start, be.end) ||
Collider.LinesIntersect_Fast(lineStart, lineEnd, le.start, le.end));
}
// TODO: adjust these functions to take into account the primitive type selected
public void AddLine(LineSegment segment, Color color)
{
AddVertex(segment.start, color);
AddVertex(segment.end, color);
}