static public bool lineseg_intersect_rectangle(LineSegf lineseg, Rectanglef rect)
{
if (point_in_rectangle(lineseg.vertex0, rect))
{
return(true);
}
if (point_in_rectangle(lineseg.vertex1, rect))
{
return(true);
}
if (lineseg_intersect_lineseg(lineseg, rect.side(0)))
{
return(true);
}
if (lineseg_intersect_lineseg(lineseg, rect.side(1)))
{
return(true);
}
if (lineseg_intersect_lineseg(lineseg, rect.side(2)))
{
return(true);
}
if (lineseg_intersect_lineseg(lineseg, rect.side(3)))
{
return(true);
}
return(false);
}
static public bool rectangle_intersect_rectangle(Rectanglef rect1, Rectanglef rect2)
{
if (rectangle_in_rectangle(rect1, rect2))
{
return(true);
}
if (rectangle_in_rectangle(rect2, rect1))
{
return(true);
}
for (int i = 0; i < 4; i++)
{
if (lineseg_intersect_rectangle(rect1.side(i), rect2))
{
return(true);
}
if (lineseg_intersect_rectangle(rect2.side(i), rect1))
{
return(true);
}
}
return(true);
}
