太阳系三体模拟器

scenes/earth_moon.py

@@ -29,4 +29,4 @@ if __name__ == '__main__':
     # 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-
-    ursina_run(bodies, SECONDS_PER_MONTH, position=(0, 0, 0))
+    ursina_run(bodies, SECONDS_PER_MONTH, position=(-300000, 300000, -1000000), show_trail=True)

scenes/func.py

@@ -9,6 +9,7 @@
 import matplotlib.pyplot as plt
 from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, SECONDS_PER_HALF_DAY
 from common.system import System
+from simulators.ursina.ursina_config import UrsinaConfig
 from simulators.ursina.ursina_event import UrsinaEvent
 
 
@@ -60,6 +61,7 @@ def ursina_run(bodies,
                light=True,
                cosmic_bg=None,
                show_grid=True,
+               show_trail=False,
                save_as_json=None):
     """
 
@@ -132,6 +134,8 @@ def ursina_run(bodies,
 
     import sys
     sys.modules["__main__"].update = callback_update
+    if show_trail:
+        UrsinaConfig.show_trail = show_trail
     simulator.run(dt, light=light, cosmic_bg=cosmic_bg, show_grid=show_grid)
 
 

scenes/three_body_01.py

@@ -7,7 +7,7 @@
 # python_version  :3.8
 # ==============================================================================
 from bodies import Sun, Earth
-from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, AU
+from common.consts import SECONDS_PER_WEEK, SECONDS_PER_YEAR, SECONDS_PER_MONTH, AU
 from scenes.func import mayavi_run, ursina_run
 
 if __name__ == '__main__':
@@ -34,4 +34,4 @@ if __name__ == '__main__':
     # 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-
-    ursina_run(bodies, SECONDS_PER_DAY, position=(3 * AU, AU, -4 * AU))
+    ursina_run(bodies, SECONDS_PER_YEAR, position=(3 * AU, AU, -4 * AU), show_trail=True)
\ No newline at end of file

scenes/tri_bodies_sim_perfect.py

@@ -6,7 +6,7 @@
 # link            :https://gitcode.net/pythoncr/
 # python_version  :3.8
 # ==============================================================================
-from bodies import Sun, Earth
+from bodies import Sun, Earth, FixedStar
 from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, AU, SECONDS_PER_MONTH, SECONDS_PER_YEAR
 from scenes.func import mayavi_run, ursina_run