Python超人-宇宙模拟器

sim_scenes/featured/earth_mars_clouds.py

+# -*- coding:utf-8 -*-
+# title           :带有云层地球模拟
+# description     :带有云层地球模拟
+# author          :Python超人
+# date            :2023-05-01
+# link            :https://gitcode.net/pythoncr/
+# python_version  :3.8
+# ==============================================================================
+from bodies import Earth
+from common.consts import SECONDS_PER_HOUR, SECONDS_PER_DAY
+from sim_scenes.func import ursina_run, create_sphere_sky
+from sim_scenes.universe_sim_scenes import UniverseSimScenes
+from simulators.ursina.ursina_event import UrsinaEvent
+
+if __name__ == '__main__':
+    """
+    带有云层地球模拟
+    """
+    mars = Earth(texture="transformed/mars.jpg", rotate_angle=0,
+                 init_position=[0, 0, 0], init_velocity=[0, 0, 0],
+                 size_scale=1).set_ignore_gravity()  # 忽略引力
+
+    # 创建带有云层的地球
+    earth = Earth(texture="earth_hd.jpg", rotate_angle=0,
+                  init_position=[1.5 * mars.diameter, 0, 0],
+                  init_velocity=[0, 0, 0],
+                  size_scale=1)
+
+    # 创建云层（texture纹理图使用了透明云层的图片，云层的 size_scale 要稍微比火星大一点）
+    mars_clouds = Earth(name="火星云层", rotate_angle=0, texture="transparent_clouds.png",
+                        size_scale=1.001, parent=mars)
+
+    # 创建云层（texture纹理图使用了透明云层的图片，云层的 size_scale 要稍微比地球大一点）
+    earth_clouds = Earth(name="地球云层", rotate_angle=0, texture="transparent_clouds.png",
+                         size_scale=1.001, parent=earth)
+
+    bodies = [mars, earth, earth_clouds, mars_clouds]
+
+    current_angle = 0
+
+
+    def on_ready():
+        global current_angle
+        from ursina import camera
+        # camera.fov = 30
+        # 运行前触发
+        # create_sphere_sky(scale=10000).rotation_y = 220
+        current_angle = earth.planet.rotation_y
+
+
+    def on_timer_changed(time_data):
+        global current_angle
+        if abs(earth.planet.rotation_y - current_angle) > 400:
+            exit(0)
+
+
+    UniverseSimScenes.set_window_size((1920, 1079), False)
+
+    # 订阅事件后，上面的函数功能才会起作用
+    # 运行前会触发 on_ready
+    UrsinaEvent.on_ready_subscription(on_ready)
+    UrsinaEvent.on_timer_changed_subscription(on_timer_changed)
+
+    # 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_HOUR / 2,
+               position=(1.5 * earth.radius, 0, -30000),
+               show_grid=False,
+               cosmic_bg='',
+               show_camera_info=False,
+               show_control_info=False,
+               timer_enabled=True,
+               view_closely=0.001)  # 近距离观看 view_closely=True或0.001