From 956a5fa4b77f0dfbcfc2ec1b8fb4ab9ad2670245 Mon Sep 17 00:00:00 2001
From: march3 <gang.wei@qq.com>
Date: Thu, 13 Apr 2023 14:26:27 +0800
Subject: [PATCH] =?UTF-8?q?Python=E8=B6=85=E4=BA=BA-=E5=AE=87=E5=AE=99?=
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---
 sim_scenes/solar_system/speed_of_light.py     |  4 +-
 .../solar_system/transit_of_venus_mercury.py  | 43 +++++++++++++++++++
 2 files changed, 45 insertions(+), 2 deletions(-)
 create mode 100644 sim_scenes/solar_system/transit_of_venus_mercury.py

diff --git a/sim_scenes/solar_system/speed_of_light.py b/sim_scenes/solar_system/speed_of_light.py
index 4643c53..32c4afe 100644
--- a/sim_scenes/solar_system/speed_of_light.py
+++ b/sim_scenes/solar_system/speed_of_light.py
@@ -13,8 +13,8 @@ from sim_scenes.solar_system.speed_of_light_init import SpeedOfLightInit
 # TODO: 三种不同的摄像机视角
 camera_follow_light = None  # 摄像机固定，不会跟随光
 # camera_follow_light = 'ForwardView'  # 摄像机跟随光，方向是向前看
-# camera_follow_light = 'SideView'  # 摄像机跟随光，方向是侧面看
-# camera_follow_light = 'SideViewActualSize'  # 摄像机跟随光，方向是侧面看，天体是实际大小
+# camera_follow_light = 'SideView'  # 摄像机跟随光，方向是从侧面看
+# camera_follow_light = 'SideViewActualSize'  # 摄像机跟随光，方向是从侧面看，天体是实际大小
 
 # 实例化一个初始化对象（订阅事件，记录到达每个行星所需要的时间）
 init = SpeedOfLightInit(camera_follow_light)
diff --git a/sim_scenes/solar_system/transit_of_venus_mercury.py b/sim_scenes/solar_system/transit_of_venus_mercury.py
new file mode 100644
index 0000000..68ab862
--- /dev/null
+++ b/sim_scenes/solar_system/transit_of_venus_mercury.py
@@ -0,0 +1,43 @@
+# -*- coding:utf-8 -*-
+# title           :水星、金星凌日
+# description     :水星、金星凌日
+# author          :Python超人
+# date            :2023-02-11
+# link            :https://gitcode.net/pythoncr/
+# python_version  :3.8
+# ==============================================================================
+from bodies import Sun, Mercury, Venus, Earth
+from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, SECONDS_PER_HOUR, AU
+from sim_scenes.func import mayavi_run, ursina_run, camera_look_at
+from simulators.ursina.entities.body_timer import TimeData
+from simulators.ursina.ursina_event import UrsinaEvent
+
+if __name__ == '__main__':
+    # 水星、金星凌日
+    earth = Earth(name="地球")
+    sun = Sun(name="太阳", size_scale=5e1)  # 太阳放大 20 倍
+    bodies = [
+        sun,
+        Mercury(name="水星",
+                init_position=[0.384 * AU, 0, 0],
+                init_velocity=[0, 0, 47.87],
+                size_scale=5e1),  # 水星放大 10 倍，距离保持不变
+        Venus(name="金星",
+              init_position=[0.721 * AU, 0, 0],
+              init_velocity=[0, 0, 35],
+              size_scale=5e1)  # 金星放大 10 倍，距离保持不变
+    ]
+
+
+    def on_ready():
+        camera_look_at(sun, rotation_x=None, rotation_y=None, rotation_z=0)
+        pass
+
+
+    UrsinaEvent.on_ready_subscription(on_ready)
+
+    # 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 * 3,
+               position=earth.init_position)
-- 
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