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宇宙模拟器
宇宙模拟器
提交 99675402 编写于 作者: 三月三net's avatar 三月三net
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Python超人-宇宙模拟器

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sim_scenes/solar_system/halley_comet_sim.py
浏览文件 @ 99675402
# -*- coding:utf-8 -*-
# title :哈雷彗星场景模拟
# description :哈雷彗星场景模拟
# title :哈雷彗星场景半真实模拟
# description :哈雷彗星运行轨道使用了万有引力，其他天体使用 astropy 包的真实数据
# author :Python超人
# date :2023-10-25
# date :2023-10-28
# link :https://gitcode.net/pythoncr/
# python_version :3.9
# ==============================================================================
import time
import math
from astropy.time import Time
from ursina import camera, application
from bodies import Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
from common.celestial_data_service import get_init_pos_vels, init_bodies_pos_vels
from common.color_utils import brightest, trail_color_brightest
from common.celestial_data_service import init_bodies_reality_pos_vels, get_reality_orbit_points, \
conv_to_astropy_time, set_solar_system_celestial_position
from common.color_utils import trail_color_brightest
from common.consts import SECONDS_PER_YEAR, AU
from common.func import calculate_distance
from objs import HalleComet, Obj
from sim_scenes.func import camera_look_at, two_bodies_colliding, create_text_panel
from objs import HalleComet
from sim_scenes.func import create_text_panel
from sim_scenes.func import ursina_run, create_sphere_sky
from simulators.ursina.entities.body_timer import TimeData
from simulators.ursina.entities.entity_utils import get_value_direction_vectors
from simulators.ursina.ui.control_ui import ControlUI
from simulators.ursina.ursina_config import UrsinaConfig
from simulators.ursina.ursina_event import UrsinaEvent
from simulators.ursina.ursina_mesh import create_orbit_line
from simulators.ursina.ursina_mesh import create_orbit_by_points, create_label
from dataclasses import dataclass
from dataclasses import field
@dataclass(order=True)
class HalleyCometParams:
start_time: str = field(default='1983-03-20 00:00:00')
init_velocity: list[float] = field(default_factory=[3.34, 0, 10.718])
init_position: list[float] = field(default_factory=[0, 0.5 * AU, -10 * AU])
class HalleyCometSim:
......@@ -28,21 +42,32 @@ class HalleyCometSim:
哈雷彗星场景模拟
"""
def __init__(self):
pass
def __init__(self, params=None):
if params is None:
self.params = HalleyCometParams()
else:
self.params = params
if isinstance(params.start_time, str):
self.start_time = conv_to_astropy_time(params.start_time)
else:
self.start_time = params.start_time
# print("北京时间：", dt.to_datetime(timezone=pytz.timezone('Asia/Shanghai')))
def build_solar_system(self):
# region 构建太阳系
self.sun = Sun(size_scale=0.8e2, show_trail=False)
self.mercury = Mercury(size_scale=5e3, show_trail=False)
self.venus = Venus(size_scale=5e3, show_trail=False)
self.earth = Earth(size_scale=5e3, rotate_angle=0, show_trail=False)
self.mars = Mars(size_scale=5e3, show_trail=False)
self.jupiter = Jupiter(size_scale=2.5e3, show_trail=False)
self.saturn = Saturn(size_scale=2.5e3, show_trail=False)
self.uranus = Uranus(size_scale=6e3, show_trail=False)
self.neptune = Neptune(size_scale=6e3, show_trail=False)
self.pluto = Pluto(size_scale=1e5, show_trail=False)
show_trail = False
self.sun = Sun(size_scale=0.6e2, show_trail=show_trail)
self.mercury = Mercury(size_scale=5e3, show_trail=show_trail)
self.venus = Venus(size_scale=3e3, show_trail=show_trail)
self.earth = Earth(size_scale=3e3, rotate_angle=0, show_trail=show_trail)
self.mars = Mars(size_scale=4e3, show_trail=show_trail)
self.jupiter = Jupiter(size_scale=2.5e3, show_trail=show_trail)
self.saturn = Saturn(size_scale=2.5e3, show_trail=show_trail)
self.uranus = Uranus(size_scale=6e3, show_trail=show_trail)
self.neptune = Neptune(size_scale=6e3, show_trail=show_trail)
self.pluto = Pluto(size_scale=1e5, show_trail=show_trail)
self.bodies = [
self.sun, # 太阳
self.mercury, # 水星
......@@ -53,11 +78,29 @@ class HalleyCometSim:
self.saturn, # 土星
self.uranus, # 天王星
self.neptune, # 海王星
self.pluto, # 冥王星
# self.pluto, # 冥王星
]
self.mercury.orbital_days = 87.9691
self.venus.orbital_days = 224.701
self.earth.orbital_days = 365.24219
self.mars.orbital_days = 686.971
self.jupiter.orbital_days = 11.862 * 365.24219
self.saturn.orbital_days = 29.4571 * 365.24219
self.uranus.orbital_days = 84.0205 * 365.24219
self.neptune.orbital_days = 164.8 * 365.24219
# self.bodies = [
# self.sun, # 太阳
# self.mars, # 火星
# self.neptune, # 海王星
# ]
# endregion
trail_color_brightest(self.bodies)
init_bodies_pos_vels(self.bodies)
for body in self.bodies[1:]:
body.init_velocity = [0, 0, 0]
body.set_ignore_gravity(True)
init_bodies_reality_pos_vels(self.bodies, self.start_time)
def build_halley_comet(self):
"""
......@@ -66,15 +109,10 @@ class HalleyCometSim:
"""
# 哈雷彗星的平均运行速度约为每小时 70,000 英里或每小时 126,000 公里 。(35公里/秒)
# 每76.1年环绕太阳一周的周期彗星
# 3.335, 0, 10.7 73
# 3.33, 0, 10.7 73
# [3.335, 0, 10.699] 71
# [3.33, 0, 10.655] 68
# [3.33, 0, 10.66] 69
self.halley_comet = HalleComet( # size_scale=4e7,
size_scale=1e8,
init_velocity=[3.34, 0, 10.7], # [3.33, 0, 10.6] < ? <[3.34, 0, 10.7]
init_position=[0, 0.5 * AU, -10 * AU]) \
size_scale=0.4e8,
init_velocity=self.params.init_velocity,
init_position=self.params.init_position) \
.set_light_disable(True)
self.bodies.append(self.halley_comet)
......@@ -83,67 +121,159 @@ class HalleyCometSim:
self.build_solar_system()
self.build_halley_comet()
def create_orbit_line(self, center_body, body):
orbital_days = int(math.ceil(body.orbital_days * 1.02))
points = get_reality_orbit_points(type(body).__name__.lower(), start_time=self.start_time, days=orbital_days,
segments=100)
# print(points)
orbit_line = create_orbit_by_points(center_body.position, points, line_color=body.trail_color)
return orbit_line
def on_ready(self):
"""
事件绑定后，模拟器运行前会触发
@return:
"""
# 创建天空
from ursina import scene
UrsinaConfig.trail_type = "line"
UrsinaConfig.trail_length = 91
UrsinaConfig.trail_thickness_factor = 3
# UrsinaConfig.trail_type = "line"
# UrsinaConfig.trail_thickness_factor = 3
# UrsinaConfig.trail_length = 91
UrsinaConfig.trail_length = 225
# camera.clip_plane_near = 0.1
camera.clip_plane_far = 1000000
create_sphere_sky(scale=200000)
# WorldGrid().draw_axises(10)
application.time_scale = 5
self.orbit_lines = []
for body in self.bodies[1:]:
if isinstance(body, HalleComet):
continue
print("create_orbit_line", body)
orbit_line = create_orbit_line(self.sun, body)
orbit_line.body = body
orbit_line = self.create_orbit_line(self.sun, body)
self.orbit_lines.append(orbit_line)
self.text_panel = create_text_panel()
def show_clock(self, dt):
"""
显示时钟
@param dt: 时间 datetime
@return:
"""
# if self.clock_position_center:
# position, origin = (0, .25), (0, 0),
# else:
position, origin = (0.60, -0.465), (-0.5, 0.5),
ControlUI.current_ui.show_message(dt.strftime('%Y-%m-%d %H:%M:%S'),
position=position,
origin=origin,
font="verdana.ttf",
close_time=-1)
def set_bodies_position(self, time_data: TimeData):
"""
设置天体的位置（包含速度和加速度的信息）
@param time_data:
@return:
"""
t = self.start_time + time_data.total_days
set_solar_system_celestial_position(self.bodies, t, False)
def create_year_label(self, trail, year, halley_comet_pos):
label = create_label(trail, label=year, pos=(0,0,0), color=(255, 255, 255), scale=40, alpha=1.0)
# label.udpate
label.set_light_off()
def on_timer_changed(self, time_data):
"""
@param time_data:
@return:
"""
# 哈雷彗星飞行的翻转效果
if self.halley_comet.planet.enabled:
# self.halley_comet.planet.rotation_x += 0.1
# self.halley_comet.planet.rotation_y += 1
self.halley_comet.planet.look_at(self.sun.planet)
# 摄像机始终看向哈雷彗星
# camera_look_at(self.halley_comet)
d = calculate_distance(self.halley_comet.position, self.sun.position)
self.text_panel.text = "哈雷彗星距离太阳：%.3f AU" % (d / AU)
dt = time_data.get_datetime(str(self.start_time))
year = dt.strftime("%Y")
if hasattr(self, "halley_comet"):
# 哈雷彗星飞行的翻转效果
if self.halley_comet.planet.enabled:
# self.halley_comet.planet.rotation_x += 0.1
# self.halley_comet.planet.rotation_y += 1
self.halley_comet.planet.look_at(self.sun.planet)
d_sun = calculate_distance(self.halley_comet.position, self.sun.position)
d_earth = calculate_distance(self.halley_comet.position, self.earth.position)
trail_keys = self.halley_comet.planet.trails.keys()
last_trail = list(trail_keys)[-1] # self.halley_comet.planet.trails[list(trail_keys)[-1]]
if hasattr(last_trail, "entity_infos"):
# print(last_trail.entity_infos)
last_trail.entity_infos["distance_from_sun"] = d_sun
last_trail.entity_infos["distance_from_earth"] = d_earth
last_trail.entity_infos["time"] = dt.strftime("%Y-%m-%d")
# print(last_trail.entity_infos)
if not hasattr(self, "last_year"):
self.create_year_label(last_trail, year, self.halley_comet.planet.position)
elif self.last_year != year:
self.create_year_label(last_trail, year, self.halley_comet.planet.position)
self.last_year = year
panel_text = "哈雷彗星:\n距离太阳：%.3f AU" % (d_sun / AU)
panel_text += "\n距离地球：%.3f AU" % (d_earth / AU)
velocity, _ = get_value_direction_vectors(self.halley_comet.velocity)
panel_text += "\n当前速度：%.3f km/s" % velocity
self.text_panel.text = panel_text
self.set_bodies_position(time_data)
self.show_clock(dt)
for i, orbit_line in enumerate(self.orbit_lines):
if i < 4:
adj_scale = False
else:
adj_scale = True
# 由于天体运行不是标准的圆形，则需要动态调整轨道的大小，保证轨道线始终在天体的中心位置
orbit_line.auto_adjust(adj_scale=adj_scale)
orbit_line.position = self.sun.planet.position
def on_body_trail_clicked(self, e):
if e["key"] == "right mouse up":
trail = e["sender"]
d_sun = trail.entity_infos["distance_from_sun"]
d_earth = trail.entity_infos["distance_from_earth"]
t = trail.entity_infos["time"]
# print("key:", e["key"])
msg = "哈雷彗星:\n距离太阳：%.3f AU" % (d_sun / AU)
msg += "\n距离地球：%.3f AU" % (d_earth / AU)
msg += "\n当前日期：[%s]" % t
ControlUI.current_ui.show_message(msg, close_time=3)
if __name__ == '__main__':
"""
哈雷彗星场景模拟
"""
sim = HalleyCometSim()
# 近日点 0.586 AU
# 上次通过近日点： 1986年2月9日
# 下次通过近日点： 2061年7月28日
# 远日点 35.1 AU 2023年12月9日
# [3.34, 0, 10.7] 2060-4-
# [3.34, 0, 10.712] 2061-5
# [3.34, 0, 10.715] 2061-6-24
# [3.34, 0, 10.718] 2061-8
params = HalleyCometParams(
start_time='1983-03-20 00:00:00',
init_velocity=[3.34, 0, 10.718],
init_position=[0, 0.5 * AU, -10 * AU]
)
sim = HalleyCometSim(params)
sim.build()
# 订阅事件后，上面2个函数功能才会起作用
# 运行中，每时每刻都会触发 on_timer_changed
UrsinaEvent.on_timer_changed_subscription(sim.on_timer_changed)
# 运行前会触发 on_ready
UrsinaEvent.on_ready_subscription(sim.on_ready)
# 天体拖尾点击事件
UrsinaEvent.on_body_trail_clicked_subscription(sim.on_body_trail_clicked)
# 使用 ursina 查看的运行效果
# 常用快捷键： P：运行和暂停 O：重新开始 I：显示天体轨迹
# position = 左-右+、上+下-、前+后-
......@@ -156,5 +286,6 @@ if __name__ == '__main__':
# bg_music='sounds/no_glory.mp3',
show_camera_info=False,
show_control_info=False,
show_timer=True,
show_grid=False)
timer_enabled=True,
show_grid=False
)
\ No newline at end of file
sim_scenes/solar_system/halley_comet_sim_02.py
浏览文件 @ 99675402
......@@ -90,9 +90,10 @@ class HalleyCometSim:
"""
# 哈雷彗星的平均运行速度约为每小时 70,000 英里或每小时 126,000 公里 。(35公里/秒)
# 每76.1年环绕太阳一周的周期彗星
self.halley_comet = HalleComet( # size_scale=4e7,
self.halley_comet = HalleComet(
# size_scale=4e7,
size_scale=1e8,
init_velocity=[3.34, 0, 10.7],
init_velocity=[3.34, 0, 10.718],
init_position=[0, 0.5 * AU, -10 * AU]) \
.set_light_disable(True)
......
sim_scenes/solar_system/halley_comet_sim_03.py
浏览文件 @ 99675402
# -*- coding:utf-8 -*-
# title :哈雷彗星场景半真实模拟
# description :哈雷彗星运行轨道使用了万有引力，其他天体使用 astropy 包的真实数据
# title :哈雷彗星场景模拟
# description :哈雷彗星场景模拟
# author :Python超人
# date :2023-10-28
# date :2023-10-25
# link :https://gitcode.net/pythoncr/
# python_version :3.9
# ==============================================================================
import math
import time
from astropy.time import Time
from ursina import camera, application
from bodies import Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
from common.celestial_data_service import init_bodies_reality_pos_vels, get_reality_orbit_points, \
conv_to_astropy_time, set_solar_system_celestial_position
from common.color_utils import trail_color_brightest
from common.celestial_data_service import get_init_pos_vels, init_bodies_pos_vels
from common.color_utils import brightest, trail_color_brightest
from common.consts import SECONDS_PER_YEAR, AU
from common.func import calculate_distance
from objs import HalleComet
from sim_scenes.func import create_text_panel
from objs import HalleComet, Obj
from sim_scenes.func import camera_look_at, two_bodies_colliding, create_text_panel
from sim_scenes.func import ursina_run, create_sphere_sky
from simulators.ursina.entities.body_timer import TimeData
from simulators.ursina.entities.entity_utils import get_value_direction_vectors
from simulators.ursina.ui.control_ui import ControlUI
from simulators.ursina.ursina_config import UrsinaConfig
from simulators.ursina.ursina_event import UrsinaEvent
from simulators.ursina.ursina_mesh import create_orbit_by_points, create_label
from dataclasses import dataclass
from dataclasses import field
@dataclass(order=True)
class HalleyCometParams:
start_time: str = field(default='1983-03-20 00:00:00')
init_velocity: list[float] = field(default_factory=[3.34, 0, 10.718])
init_position: list[float] = field(default_factory=[0, 0.5 * AU, -10 * AU])
from simulators.ursina.ursina_mesh import create_orbit_line
class HalleyCometSim:
......@@ -42,32 +28,21 @@ class HalleyCometSim:
哈雷彗星场景模拟
"""
def __init__(self, params=None):
if params is None:
self.params = HalleyCometParams()
else:
self.params = params
if isinstance(params.start_time, str):
self.start_time = conv_to_astropy_time(params.start_time)
else:
self.start_time = params.start_time
# print("北京时间：", dt.to_datetime(timezone=pytz.timezone('Asia/Shanghai')))
def __init__(self):
pass
def build_solar_system(self):
# region 构建太阳系
show_trail = False
self.sun = Sun(size_scale=0.6e2, show_trail=show_trail)
self.mercury = Mercury(size_scale=5e3, show_trail=show_trail)
self.venus = Venus(size_scale=3e3, show_trail=show_trail)
self.earth = Earth(size_scale=3e3, rotate_angle=0, show_trail=show_trail)
self.mars = Mars(size_scale=4e3, show_trail=show_trail)
self.jupiter = Jupiter(size_scale=2.5e3, show_trail=show_trail)
self.saturn = Saturn(size_scale=2.5e3, show_trail=show_trail)
self.uranus = Uranus(size_scale=6e3, show_trail=show_trail)
self.neptune = Neptune(size_scale=6e3, show_trail=show_trail)
self.pluto = Pluto(size_scale=1e5, show_trail=show_trail)
self.sun = Sun(size_scale=0.8e2, show_trail=False)
self.mercury = Mercury(size_scale=5e3, show_trail=False)
self.venus = Venus(size_scale=5e3, show_trail=False)
self.earth = Earth(size_scale=5e3, rotate_angle=0, show_trail=False)
self.mars = Mars(size_scale=5e3, show_trail=False)
self.jupiter = Jupiter(size_scale=2.5e3, show_trail=False)
self.saturn = Saturn(size_scale=2.5e3, show_trail=False)
self.uranus = Uranus(size_scale=6e3, show_trail=False)
self.neptune = Neptune(size_scale=6e3, show_trail=False)
self.pluto = Pluto(size_scale=1e5, show_trail=False)
self.bodies = [
self.sun, # 太阳
self.mercury, # 水星
......@@ -78,29 +53,11 @@ class HalleyCometSim:
self.saturn, # 土星
self.uranus, # 天王星
self.neptune, # 海王星
# self.pluto, # 冥王星
self.pluto, # 冥王星
]
self.mercury.orbital_days = 87.9691
self.venus.orbital_days = 224.701
self.earth.orbital_days = 365.24219
self.mars.orbital_days = 686.971
self.jupiter.orbital_days = 11.862 * 365.24219
self.saturn.orbital_days = 29.4571 * 365.24219
self.uranus.orbital_days = 84.0205 * 365.24219
self.neptune.orbital_days = 164.8 * 365.24219
# self.bodies = [
# self.sun, # 太阳
# self.mars, # 火星
# self.neptune, # 海王星
# ]
# endregion
trail_color_brightest(self.bodies)
for body in self.bodies[1:]:
body.init_velocity = [0, 0, 0]
body.set_ignore_gravity(True)
init_bodies_reality_pos_vels(self.bodies, self.start_time)
init_bodies_pos_vels(self.bodies)
def build_halley_comet(self):
"""
......@@ -110,9 +67,9 @@ class HalleyCometSim:
# 哈雷彗星的平均运行速度约为每小时 70,000 英里或每小时 126,000 公里 。(35公里/秒)
# 每76.1年环绕太阳一周的周期彗星
self.halley_comet = HalleComet( # size_scale=4e7,
size_scale=0.4e8,
init_velocity=self.params.init_velocity,
init_position=self.params.init_position) \
size_scale=1e8,
init_velocity=[3.34, 0, 10.718],
init_position=[0, 0.5 * AU, -10 * AU]) \
.set_light_disable(True)
self.bodies.append(self.halley_comet)
......@@ -121,159 +78,67 @@ class HalleyCometSim:
self.build_solar_system()
self.build_halley_comet()
def create_orbit_line(self, center_body, body):
orbital_days = int(math.ceil(body.orbital_days * 1.02))
points = get_reality_orbit_points(type(body).__name__.lower(), start_time=self.start_time, days=orbital_days,
segments=100)
# print(points)
orbit_line = create_orbit_by_points(center_body.position, points, line_color=body.trail_color)
return orbit_line
def on_ready(self):
"""
事件绑定后，模拟器运行前会触发
@return:
"""
# 创建天空
# UrsinaConfig.trail_type = "line"
# UrsinaConfig.trail_thickness_factor = 3
# UrsinaConfig.trail_length = 91
UrsinaConfig.trail_length = 225
from ursina import scene
UrsinaConfig.trail_type = "line"
UrsinaConfig.trail_length = 91
UrsinaConfig.trail_thickness_factor = 3
# camera.clip_plane_near = 0.1
camera.clip_plane_far = 1000000
create_sphere_sky(scale=200000)
# WorldGrid().draw_axises(10)
application.time_scale = 5
self.orbit_lines = []
for body in self.bodies[1:]:
if isinstance(body, HalleComet):
continue
orbit_line = self.create_orbit_line(self.sun, body)
print("create_orbit_line", body)
orbit_line = create_orbit_line(self.sun, body)
orbit_line.body = body
self.orbit_lines.append(orbit_line)
self.text_panel = create_text_panel()
def show_clock(self, dt):
"""
显示时钟
@param dt: 时间 datetime
@return:
"""
# if self.clock_position_center:
# position, origin = (0, .25), (0, 0),
# else:
position, origin = (0.60, -0.465), (-0.5, 0.5),
ControlUI.current_ui.show_message(dt.strftime('%Y-%m-%d %H:%M:%S'),
position=position,
origin=origin,
font="verdana.ttf",
close_time=-1)
def set_bodies_position(self, time_data: TimeData):
"""
设置天体的位置（包含速度和加速度的信息）
@param time_data:
@return:
"""
t = self.start_time + time_data.total_days
set_solar_system_celestial_position(self.bodies, t, False)
def create_year_label(self, trail, year, halley_comet_pos):
label = create_label(trail, label=year, pos=(0,0,0), color=(255, 255, 255), scale=40, alpha=1.0)
# label.udpate
label.set_light_off()
def on_timer_changed(self, time_data):
"""
@param time_data:
@return:
"""
dt = time_data.get_datetime(str(self.start_time))
year = dt.strftime("%Y")
if hasattr(self, "halley_comet"):
# 哈雷彗星飞行的翻转效果
if self.halley_comet.planet.enabled:
# self.halley_comet.planet.rotation_x += 0.1
# self.halley_comet.planet.rotation_y += 1
self.halley_comet.planet.look_at(self.sun.planet)
d_sun = calculate_distance(self.halley_comet.position, self.sun.position)
d_earth = calculate_distance(self.halley_comet.position, self.earth.position)
trail_keys = self.halley_comet.planet.trails.keys()
last_trail = list(trail_keys)[-1] # self.halley_comet.planet.trails[list(trail_keys)[-1]]
if hasattr(last_trail, "entity_infos"):
# print(last_trail.entity_infos)
last_trail.entity_infos["distance_from_sun"] = d_sun
last_trail.entity_infos["distance_from_earth"] = d_earth
last_trail.entity_infos["time"] = dt.strftime("%Y-%m-%d")
# print(last_trail.entity_infos)
if not hasattr(self, "last_year"):
self.create_year_label(last_trail, year, self.halley_comet.planet.position)
elif self.last_year != year:
self.create_year_label(last_trail, year, self.halley_comet.planet.position)
self.last_year = year
panel_text = "哈雷彗星:\n距离太阳：%.3f AU" % (d_sun / AU)
panel_text += "\n距离地球：%.3f AU" % (d_earth / AU)
velocity, _ = get_value_direction_vectors(self.halley_comet.velocity)
panel_text += "\n当前速度：%.3f km/s" % velocity
self.text_panel.text = panel_text
self.set_bodies_position(time_data)
self.show_clock(dt)
# 哈雷彗星飞行的翻转效果
if self.halley_comet.planet.enabled:
# self.halley_comet.planet.rotation_x += 0.1
# self.halley_comet.planet.rotation_y += 1
self.halley_comet.planet.look_at(self.sun.planet)
# 摄像机始终看向哈雷彗星
# camera_look_at(self.halley_comet)
d = calculate_distance(self.halley_comet.position, self.sun.position)
self.text_panel.text = "哈雷彗星距离太阳：%.3f AU" % (d / AU)
for i, orbit_line in enumerate(self.orbit_lines):
orbit_line.position = self.sun.planet.position
def on_body_trail_clicked(self, e):
if e["key"] == "right mouse up":
trail = e["sender"]
d_sun = trail.entity_infos["distance_from_sun"]
d_earth = trail.entity_infos["distance_from_earth"]
t = trail.entity_infos["time"]
# print("key:", e["key"])
msg = "哈雷彗星:\n距离太阳：%.3f AU" % (d_sun / AU)
msg += "\n距离地球：%.3f AU" % (d_earth / AU)
msg += "\n当前日期：[%s]" % t
ControlUI.current_ui.show_message(msg, close_time=3)
if i < 4:
adj_scale = False
else:
adj_scale = True
# 由于天体运行不是标准的圆形，则需要动态调整轨道的大小，保证轨道线始终在天体的中心位置
orbit_line.auto_adjust(adj_scale=adj_scale)
if __name__ == '__main__':
"""
哈雷彗星场景模拟
"""
# 近日点 0.586 AU
# 上次通过近日点： 1986年2月9日
# 下次通过近日点： 2061年7月28日
# 远日点 35.1 AU 2023年12月9日
# [3.34, 0, 10.7] 2060-4-
# [3.34, 0, 10.712] 2061-5
# [3.34, 0, 10.715] 2061-6-24
# [3.34, 0, 10.718] 2061-8
params = HalleyCometParams(
start_time='1983-03-20 00:00:00',
init_velocity=[3.34, 0, 10.718],
init_position=[0, 0.5 * AU, -10 * AU]
)
sim = HalleyCometSim(params)
sim = HalleyCometSim()
sim.build()
# 订阅事件后，上面2个函数功能才会起作用
# 运行中，每时每刻都会触发 on_timer_changed
UrsinaEvent.on_timer_changed_subscription(sim.on_timer_changed)
# 运行前会触发 on_ready
UrsinaEvent.on_ready_subscription(sim.on_ready)
# 天体拖尾点击事件
UrsinaEvent.on_body_trail_clicked_subscription(sim.on_body_trail_clicked)
# 使用 ursina 查看的运行效果
# 常用快捷键： P：运行和暂停 O：重新开始 I：显示天体轨迹
# position = 左-右+、上+下-、前+后-
......@@ -286,6 +151,5 @@ if __name__ == '__main__':
# bg_music='sounds/no_glory.mp3',
show_camera_info=False,
show_control_info=False,
timer_enabled=True,
show_grid=False
)
show_timer=True,
show_grid=False)
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