From 0ba5a3d728c4bdc3a38febaa8e0ed121597b74b1 Mon Sep 17 00:00:00 2001
From: march3 <gang.wei@qq.com>
Date: Tue, 21 Mar 2023 22:10:28 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A4=AA=E9=98=B3=E7=B3=BB=E4=B8=89=E4=BD=93?=
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---
 scenes/earth_moon.py             | 2 +-
 scenes/func.py                   | 4 ++++
 scenes/three_body_01.py          | 4 ++--
 scenes/tri_bodies_sim_perfect.py | 2 +-
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/scenes/earth_moon.py b/scenes/earth_moon.py
index aeae959..dbd81d5 100644
--- a/scenes/earth_moon.py
+++ b/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)
diff --git a/scenes/func.py b/scenes/func.py
index 450f951..bc43a1d 100644
--- a/scenes/func.py
+++ b/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)
 
 
diff --git a/scenes/three_body_01.py b/scenes/three_body_01.py
index a6fa201..3fbfc1b 100644
--- a/scenes/three_body_01.py
+++ b/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))
\ No newline at end of file
+    ursina_run(bodies, SECONDS_PER_YEAR, position=(3 * AU, AU, -4 * AU), show_trail=True)
\ No newline at end of file
diff --git a/scenes/tri_bodies_sim_perfect.py b/scenes/tri_bodies_sim_perfect.py
index 5626bf4..c4e9287 100644
--- a/scenes/tri_bodies_sim_perfect.py
+++ b/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
 
-- 
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