Segment Rectangle rectangle intersects with Rectangle

[CSharp]View Plain copy print? /* Function: Determine whether the segment and the rectangle intersect first to determine whether the two endpoints of the line is within the rectangle, the inevitable intersection next to determine whether the bounding box of the segment and the rectangle intersect, do not intersect the line and the rectangle must not intersect the final judgment, the four top of the rectangle If the point is on either side of the line, it is bound to intersect, otherwise it does not intersect */ [CSharp]View Plain copy print? [CSharp]View Plain copy print? [CSharp]  View plain copy print? using system;   using system.collections.generic;   using System.Linq;    using system.text;      namespace consoleapplication1   {        class LineConverttoRectangleClass       {            public class Point            {                public point (float xx,float yy)                 {                    x = xx;                    y = yy;    &Nbsp;          }                public float x,y;            }           public class  line           {                public line (POINT PP1, POINT PP2)                {                    p1 = pp1;                    p2 = pp2;                }                public point p1;                public Point p2;            }           public class  rectangle           {                public rectangle (POINT PP1, POINT PP2)                {                    p1 = pp1;                    p2  = pp2;