def overlap(self, other):
offset = sub_vector(other.pos, self.pos)
overlap = sub_vector(other.pos, self.pos)
rect1 = pygame.Rect((0,0), self.get_size())
rect2 = pygame.Rect(offset, other.get_size())
rect=rect1.clip(rect2)
if rect.width==0 or rect.height==0:
return False
x1,y1,x2,y2 = rect.x-rect1.x,rect.y-rect1.y,rect.x-rect2.x,rect.y-rect2.y
hm1 = self.data
hm2 = other.data
for x in xrange(rect.width):
for y in xrange(rect.height):
if hm1[x1+x][y1+y] and hm2[x2+x][y2+y]:return True
else:continue
return False
def overlap_area(self, other):
offset = sub_vector(other.pos, self.pos)
rect1 = pygame.Rect((0,0), self.get_size())
rect2 = pygame.Rect(offset, other.get_size())
rect=rect1.clip(rect2)
if rect.width==0 or rect.height==0:
return 0
x1,y1,x2,y2 = rect.x-rect1.x,rect.y-rect1.y,rect.x-rect2.x,rect.y-rect2.y
hm1 = self.data
hm2 = other.data
num = 0
for x in xrange(rect.width):
for y in xrange(rect.height):
if hm1[x1+x][y1+y] and hm2[x2+x][y2+y]:
num += 1
return num
def overlap(self, other):
return Mask.overlap(self, other, sub_vector(other.pos, self.pos))
