本文整理汇总了Python中Point.Point.normalize方法的典型用法代码示例。如果您正苦于以下问题：Python Point.normalize方法的具体用法？Python Point.normalize怎么用？Python Point.normalize使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Point.Point的用法示例。
在下文中一共展示了Point.normalize方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: Avoider
# 需要导入模块: from Point import Point [as 别名]
# 或者: from Point.Point import normalize [as 别名]
class Avoider(Enemy):
def __init__(self, scene, x, y):
super().__init__(scene, x, y)
self._velocity = Point(0, 0)
self.set_shape(sh.STAR_SHAPE, Colors.avoid, True, 5)
def update(self):
player = self._scene.player
vec_to_player = player.position - self.position
dir_to_player = math.atan2(vec_to_player.y, vec_to_player.x)
angle = self._angle_distance(player.direction, dir_to_player)
if angle < math.pi/2:
dirvec = vec_to_player
speed = ACCELERATION
else:
avoid_point = Point(1, 1)
avoid_count = 0
for obj in self.scene.objects:
if isinstance(obj, pl.Bullet):
distance = (obj.position - self.position).length_sqr()
if distance <= DISTANCE_SQR:
avoid_point += obj.position
avoid_count += 1
if avoid_count > 0:
avoid_point /= avoid_count
dirvec = self.position - avoid_point
speed = DODGE
else:
dirvec = vec_to_player
speed = ACCELERATION
self._velocity += dirvec * speed / dirvec.length()
if self._velocity.length_sqr() > SPEED_SQR:
self._velocity.normalize()
self._velocity *= SPEED
self.position += self._velocity
self.direction += ANGULAR_SPEED
super().update()
def _angle_distance(self, alpha, beta):
phi = abs(beta - alpha) % 360
distance = 360 - phi if phi > 180 else phi
return distance示例2: calcDirection
# 需要导入模块: from Point import Point [as 别名]
# 或者: from Point.Point import normalize [as 别名]
def calcDirection(self):
del self.direction[:]
n = len(self.points)
for i in range(0,n-1):
a,b = self.points[i].getCoords()
c,d = self.points[i+1].getCoords()
dx = c - a
dy = d - b
d = Point(dx, dy)
if d.length() < 0.001:
d = Point(0, 0)
else:
d.normalize()
self.direction.append(d)示例3: Brick
# 需要导入模块: from Point import Point [as 别名]
# 或者: from Point.Point import normalize [as 别名]
class Brick(Enemy):
def __init__(self, scene, x, y, n=2):
super().__init__(scene, x, y)
self._velocity = Point(0, 0)
self._size = n
myscale = SCALE - n*2
self.set_shape(sh.BRICK_SHAPE[n], Colors.split, True, myscale)
self._sleep = SLEEP_TIME if n < 2 else 0
def destroy(self):
if self._size > 0:
s = SCALE
off = self._size*s
n = self._size - 1
for x in range(0, 2):
for y in range(0, 2):
celloffset = Point(off + x*s, off + y*s)
cellpos = self.position + celloffset
child = Brick(self._scene, cellpos.x, cellpos.y, n)
child._velocity = (cellpos - self.position)*2
self._scene.add_object(child)
super().destroy()
def update(self):
if self._sleep <= 0:
player = self._scene.player
dirvec = player.position - self.position
self._velocity += dirvec * ACCELERATION / dirvec.length()
else:
self._sleep -= 1
if self._velocity.length_sqr() > SPEED:
self._velocity.normalize()
self._velocity *= SPEED
self.position += self._velocity
self.direction += self._velocity.length()*ANGULAR_SPEED
super().update()