68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
|
import math
|
||
|
|
import random
|
||
|
|
import numpy as np
|
||
|
|
from numpy import array
|
||
|
|
from pygame.draw import circle
|
||
|
|
|
||
|
|
|
||
|
|
class LuminousCircleEffect:
|
||
|
|
|
||
|
|
object_type = "nr_l"
|
||
|
|
|
||
|
|
def __init__(self, position, r, color, scene, circles_n=20, point_speed=0.02, movement_stability=5):
|
||
|
|
self.position = position
|
||
|
|
self.r = r
|
||
|
|
self.color = color
|
||
|
|
self.scene = scene
|
||
|
|
self.circles_n = circles_n
|
||
|
|
self.point_speed = point_speed
|
||
|
|
self.point_speed_inverse = 1 / self.point_speed
|
||
|
|
self.movement_stability = movement_stability
|
||
|
|
|
||
|
|
self.point_position = array([0., 0.])
|
||
|
|
self.point_velocity = array([0., 0.])
|
||
|
|
|
||
|
|
def update(self):
|
||
|
|
self.point_position += self.point_velocity
|
||
|
|
|
||
|
|
a = math.sqrt(sum(self.point_position ** 2))
|
||
|
|
|
||
|
|
if a > 1:
|
||
|
|
self.point_position /= a
|
||
|
|
a = 1
|
||
|
|
|
||
|
|
b = 1 - a
|
||
|
|
c = (0.5 * a) + b
|
||
|
|
d = math.sqrt((c ** 2) - ((a * 0.5) ** 2))
|
||
|
|
|
||
|
|
if a == 0:
|
||
|
|
rotation_point = complex(1, 0)
|
||
|
|
else:
|
||
|
|
normalized_point_position = self.point_position / a
|
||
|
|
rotation_point = complex(*normalized_point_position)
|
||
|
|
|
||
|
|
delta = random.uniform(0, math.tau)
|
||
|
|
m = max(random.uniform(0, 1), random.uniform(0, 1))
|
||
|
|
|
||
|
|
point_position = complex(math.cos(delta) * m * c, math.sin(delta) * m * d) * rotation_point
|
||
|
|
point_position = array([point_position.real, point_position.imag])
|
||
|
|
|
||
|
|
self.point_velocity *= self.movement_stability * self.point_speed_inverse
|
||
|
|
self.point_velocity += point_position - self.point_position
|
||
|
|
self.point_velocity /= math.sqrt(sum(self.point_velocity ** 2))
|
||
|
|
self.point_velocity *= self.point_speed
|
||
|
|
|
||
|
|
def blit(self):
|
||
|
|
rescaled_r = self.r * self.scene.pd_
|
||
|
|
transformed_position = self.scene.matrix @ self.position
|
||
|
|
|
||
|
|
x = np.linspace(0, self.point_position[0], self.circles_n) * rescaled_r
|
||
|
|
y = np.linspace(0, self.point_position[1], self.circles_n) * rescaled_r
|
||
|
|
r = np.linspace(rescaled_r, 0, self.circles_n)
|
||
|
|
|
||
|
|
c = [np.linspace(value, 255, self.circles_n) for value in self.color]
|
||
|
|
|
||
|
|
for i in range(self.circles_n - 1):
|
||
|
|
circle(self.scene.s, (c[0][i], c[1][i], c[2][i]),
|
||
|
|
transformed_position + array([x[i], y[i]]), r[i])
|