/// <summary>
/// 线和BOX相交
/// </summary>
/// <param name="line"></param>
/// <param name="box"></param>
/// <returns></returns>
public static Segment2?IntersectionWith(this Line2 line, Box2 box)
{
IntersectionLine2Box2 intersectionLine2Box = new IntersectionLine2Box2(line, box);
bool flag = intersectionLine2Box.Find();
if (flag && intersectionLine2Box.IntersectionType == Intersection.Type.IT_SEGMENT)
{
return(new Segment2?(new Segment2(intersectionLine2Box.Point0, intersectionLine2Box.Point1)));
}
if (flag && intersectionLine2Box.IntersectionType == Intersection.Type.IT_POINT)
{
return(new Segment2?(new Segment2(intersectionLine2Box.Point0, line.Direction, 0.0)));
}
return(null);
}
/// <summary>
///
/// </summary>
/// <param name="line"></param>
/// <param name="axisAlignedBox"></param>
/// <returns></returns>
public static Segment2?IntersectionWith(this Line2 line, AxisAlignedBox2 axisAlignedBox)
{
Box2 box = new Box2(axisAlignedBox.Center, UnitVector2.UnitX, UnitVector2.UnitY, axisAlignedBox.ExtentX, axisAlignedBox.ExtentY);
IntersectionLine2Box2 intersectionLine2Box = new IntersectionLine2Box2(line, box);
bool flag = intersectionLine2Box.Find();
if (flag && intersectionLine2Box.IntersectionType == Intersection.Type.IT_SEGMENT)
{
return(new Segment2?(new Segment2(intersectionLine2Box.Point0, intersectionLine2Box.Point1)));
}
if (flag && intersectionLine2Box.IntersectionType == Intersection.Type.IT_POINT)
{
return(new Segment2?(new Segment2(intersectionLine2Box.Point0, line.Direction, 0.0)));
}
return(null);
}
/// <summary>
///
/// </summary>
/// <param name="line"></param>
/// <param name="box"></param>
/// <returns></returns>
public static ICollection <Vector2> IntersectionPointsWith(this Line2 line, Box2 box)
{
IntersectionLine2Box2 intersectionLine2Box = new IntersectionLine2Box2(line, box);
intersectionLine2Box.Find();
List <Vector2> list = new List <Vector2>();
Vector2[] array = new Vector2[]
{
intersectionLine2Box.Point0,
intersectionLine2Box.Point1
};
for (int i = 0; i < intersectionLine2Box.Quantity; i++)
{
list.Add(array[i]);
}
return(list);
}
/// <summary>
///
/// </summary>
/// <param name="line"></param>
/// <param name="axisAlignedBox"></param>
/// <returns></returns>
public static ICollection <Vector2> IntersectionPointsWith(this Line2 line, AxisAlignedBox2 axisAlignedBox)
{
Box2 box = new Box2(axisAlignedBox.Center, UnitVector2.UnitX, UnitVector2.UnitY, axisAlignedBox.ExtentX, axisAlignedBox.ExtentY);
IntersectionLine2Box2 intersectionLine2Box = new IntersectionLine2Box2(line, box);
intersectionLine2Box.Find();
List <Vector2> list = new List <Vector2>();
Vector2[] array = new Vector2[]
{
intersectionLine2Box.Point0,
intersectionLine2Box.Point1
};
for (int i = 0; i < intersectionLine2Box.Quantity; i++)
{
list.Add(array[i]);
}
return(list);
}