public static List <Vector2> GetIntersectionPoint(this Rect rect, Line2 line)
{
List <Vector2> p = new List <Vector2>();
// Top line
Line2 lineTop = new Line2(new Vector2(rect.xMin, rect.yMax), rect.max);
Vector2 topPoint = line.GetIntersectionPoint(lineTop);
if (lineTop.ContainPointInSegment(topPoint))
{
p.Add(topPoint);
}
// Bottom line
Line2 lineBottom = new Line2(rect.min, new Vector2(rect.xMax, rect.yMin));
Vector2 bottomPoint = line.GetIntersectionPoint(lineBottom);
if (lineBottom.ContainPointInSegment(bottomPoint))
{
p.Add(bottomPoint);
}
// Left side
Line2 lineLeft = new Line2(rect.min, new Vector2(rect.xMin, rect.yMax));
Vector2 leftPoint = line.GetIntersectionPoint(lineLeft);
if (lineLeft.ContainPointInSegment(leftPoint))
{
p.Add(leftPoint);
}
// Right side
Line2 lineRight = new Line2(new Vector2(rect.xMax, rect.yMin), rect.max);
Vector2 rightPoint = line.GetIntersectionPoint(lineRight);
if (lineRight.ContainPointInSegment(rightPoint))
{
p.Add(rightPoint);
}
return(p);
}
