[Python] 纯文本查看 复制代码 import random
import cv2
import numpy as np
def cal(point,here):
# 计算樱花中的坐标在屏幕中投影的坐标
# here不断增大，delta不断减少
delta = point[0] - here
if delta==0:
return [-1, -1, 1, 0, 0]
x = point[1]/delta # 投影在屏幕上x坐标
y = point[2]/delta # 投影在屏幕上y坐标
r = point[3]/delta # 星球半径
return [x, y, r]
def display_all(sakura,here):
result=[]
for i in range(sakura_num):
position = cal(sakura[i],here)
result.append(position)
return result
if __name__ == "__main__":
height=1080
width=1920
step = 0.5
min_r = 1
max_r = 200
sakura_num = 150
x_far = 100*2
y_far = width*x_far
z_far = height*x_far
here = 0
sakura = [[0,0,0,0,0] for i in range(sakura_num)]
cv2.namedWindow('sakura',0)
while True:
canvas=np.zeros((height,width,3),dtype=np.uint8)
here+=step
for i in range(sakura_num):
while True:
position = cal(sakura[i],here)
if (0 <= position[0] < width and
0 <= position[1] < height and sakura[i][0]>here):
break
else:
sakura[i][0] = random.randint(x_far, 2*x_far)+here
sakura[i][1] = random.randint(0, 2*y_far)
sakura[i][2] = random.randint(0, 2*z_far)
sakura[i][3] = random.randint(min_r, max_r)
result=display_all(sakura,here)
result=np.uint16(result).tolist()
for i in range(sakura_num):
radius=np.random.randint(3,15,size=(1,2)).tolist()[0]
cv2.ellipse(canvas,tuple(result[i][0:2]),tuple(radius),30,0,360,color=(233,192,255),thickness = -1)
cv2.imshow('sakura',canvas)
if cv2.waitKey(10)==27:
cv2.destroyAllWindows()
break
| 
[复制链接]
发表于 2022-5-27 21:21
