[MATH]没错还是数学问题，不过这可以算计算机图形学= = - Project1

class pointF
attr_accessor:x
attr_accessor:y
def initialize(x,y)
@x=x
@y=y
end
end
class Rectangle
attr_accessor:left_up
attr_accessor:right_down
def initialize(p1,p2)
left_up=p1
right_down=p2
end
def &(v)
#请完成本段代码
end
end

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#==============================================================================
# ■ Rect
#------------------------------------------------------------------------------
# 　矩形类吐槽无力~
#==============================================================================
class Rect
QWERTY = [2, 4, 6, 8]
#--------------------------------------------------------------------------
# ● 香蕉判定
#--------------------------------------------------------------------------
def &(rect)
raise(RGSSError,"丫的不给力啊!") unless rect.is_a?(Rect)
lu = range(rect.x, rect.y)
rd = range(rect.x+rect.width, rect.y+rect.height)
return false if lu == rd
unless [lu,rd].include?(5)
return 0 if ([lu,rd] & QWERTY).size == 2
return false if((lu-1)/3==(rd-1)/3)or(lu-1)%3==(rd-1)%3 or(lu == 7 and rd == 3)
case lu
when 7
return rd == 2 ? 14 : 18
when 8
return rd == 6 ? 9 : 16
when 4
return rd == 2 ? 1 : 12
end
else
return lu == 5 ? rd : lu
end
raise(RGSSError,"未判断错误...#{[lu, rd]}")
end
#--------------------------------------------------------------------------
# ● 范围判定
#--------------------------------------------------------------------------
def range(x, y, site=false)
unless site
return range(x, y, x>self.x ?(y>self.y ? 3:9):(y>self.y ? 1:7))
else
return 7 if site == 7
site2 =(x>self.x+self.width) ? (y>self.y+self.height ? 3:9):(y>self.y+self.height ? 1:7)
case site
when 9
return site2 == 9 ? 9 : 8
when 1
return site2 == 1 ? 1 : 4
when 3
return site2 == 1 ? 2 : site2 == 7 ? 5 : site2 == 3 ? 3 : 9
end
end
end
end

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class PointF
attr_accessor:x
attr_accessor:y
def initialize(x,y)
@x=x
@y=y
end
end
class Rectangle
attr_accessor:left_up
attr_accessor:right_down
def initialize(p1,p2)
@left_up=p1
@right_down=p2
end
def check(rectA) #返回此Rectangle哪条边与rectA相交
#有边重叠的情况
if rectA.right_down.x == left_up.x
unless rectA.left_up.y >= right_down.y or rectA.right_down.y <= left_up.x
return 1 #左边
end
end
if rectA.left_up.x == right_down.x
unless rectA.left_up.y >= right_down.y or rectA.right_down.y <= left_up.x
return 2 #右边
end
end
if rectA.right_down.y == left_up.y
unless rectA.right_down.x <= left_up.x or rectA.left_up.x >= right_down.x
return 3 #上边
end
end
if rectA.left_up.y == right_down.y
unless rectA.right_down.x <= left_up.x or rectA.left_up.x >= right_down.x
return 4 #下边
end
end
#没有边重叠的情况
if rectA.right_down.x > left_up.x and
rectA.left_up.x < left_up.x and
((rectA.left_up.y < left_up.y and rectA.right_down.y > right_down.y) or
(rectA.left_up.y > left_up.y and rectA.right_down.y < right_down.y))
return 1 #左边
end
if rectA.left_up.x < right_down.x and
rectA.right_down.x > right_down.x and
((rectA.left_up.y < left_up.y and rectA.right_down.y > right_down.y) or
(rectA.left_up.y > left_up.y and rectA.right_down.y < right_down.y))
return 2 #右边
end
if rectA.right_down.y > left_up.y and
rectA.left_up.y < left_up.y and
((rectA.left_up.x < left_up.x and rectA.right_down.x > right_down.x) or
(rectA.left_up.x > left_up.x and rectA.right_down.x < right_down.x))
return 3 #上边
end
if rectA.left_up.y < right_down.y and
rectA.left_up.y < left_up.y and
((rectA.left_up.x < left_up.x and rectA.right_down.x > right_down.x) or
(rectA.left_up.x > left_up.x and rectA.right_down.x < right_down.x))
return 4 #下边
end
if rectA.right_down.x > left_up.x and
rectA.left_up.x < left_up.x and
rectA.right_down.x < right_down.x and
rectA.left_up.y < left_up.y and
rectA.right_down.y > left_up.y and
rectA.right_down.y < right_down.y
return 5 #左上
end
if rectA.left_up.x > left_up.x and
rectA.left_up.x < right_down.x and
rectA.right_down.x > right_down.x and
rectA.left_up.y < left_up.y and
rectA.right_down.y > left_up.y and
rectA.right_down.y < right_down.y
return 6 #右上
end
if rectA.right_down.x > left_up.x and
rectA.left_up.x < left_up.x and
rectA.right_down.x < right_down.x and
rectA.left_up.y > left_up.y and
rectA.left_up.y < right_down.y and
rectA.right_down.y > right_down.y
return 7 #左下
end
if rectA.left_up.x > left_up.x and
rectA.left_up.x < right_down.x and
rectA.right_down.x > right_down.x and
rectA.left_up.y > left_up.y and
rectA.left_up.y < right_down.y and
rectA.right_down.y > right_down.y
return 8 #右下
end
return 0 #不相交
end
end

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