diff --git a/sim_scenes/science/four_seasons.py b/sim_scenes/science/four_seasons.py index c89909cc94fe0518fb031d236aff1b97fa87fc1b..1f3918d6b06a82e5c80fd9dc95f80897bd201998 100644 --- a/sim_scenes/science/four_seasons.py +++ b/sim_scenes/science/four_seasons.py @@ -13,59 +13,72 @@ from simulators.ursina.entities.body_timer import TimeData from simulators.ursina.ursina_event import UrsinaEvent from ursina import camera + +def create_earth(name, text_color, position): + """ + 创建透明的地球 + @param name: 名称 + @param text_color: 文字颜色 + @param position: 地球的位置 + @return: + """ + return Earth(name=name, size_scale=5e3, texture="earth_transparent.png", # 明的地球纹理 + text_color=text_color, rotation_speed=0, + init_position=position, init_velocity=[0, 0, 0]).set_ignore_gravity(True) # 忽略重力 + + if __name__ == '__main__': """ - 太阳、地球 + 摄像机以太阳的视角看地球（四季和24节气） """ + sun = Sun(size_scale=5e1, texture="transparent.png") # 太阳使用透明纹理，不会遮挡摄像机 + # 在 4 个节气的位置创建固定不动的透明地球 + earth_1 = create_earth(name="春分", text_color=(0, 255, 0), position=[-1.05 * AU, 0, 0]) + earth_2 = create_earth(name="夏至", text_color=(255, 0, 0), position=[0, 0, -1.05 * AU]) + earth_3 = create_earth(name="秋分", text_color=(255, 255, 0), position=[1.05 * AU, 0, 0]) + earth_4 = create_earth(name="冬至", text_color=(0, 255, 255), position=[0, 0, 1.05 * AU]) + # 运动的地球 + earth = Earth(size_scale=5e3, texture="earth_hd.jpg", + text_color=[255, 255, 255], rotation_speed=1, + init_position=[-1 * AU, 0, 0], init_velocity=[0, 0, -29.79]) + bodies = [ - Sun(size_scale=5e1, texture="transparent.png"), # 太阳透明 - Earth(name="中国春天", size_scale=5e3, texture="earth_hd.jpg", text_color=(0, 255, 0), - init_position=[-1 * AU, 0, 0], init_velocity=[0, 0, -29.79]), - Earth(name="中国夏天", size_scale=5e3, texture="earth_hd.jpg", text_color=(255, 0, 0), - init_position=[0, 0, -1 * AU], init_velocity=[29.79, 0, 0]), - Earth(name="中国秋天", size_scale=5e3, texture="earth_hd.jpg", text_color=(255, 255, 0), - init_position=[1 * AU, 0, 0], init_velocity=[0, 0, 29.79]), - Earth(name="中国冬天", size_scale=5e3, texture="earth_hd.jpg", text_color=(0, 255, 255), - init_position=[0, 0, 1 * AU], init_velocity=[-29.79, 0, 0]), + sun, earth, + earth_1, earth_2, earth_3, earth_4, ] - sun = bodies[0] - earth_1 = bodies[1] - earth_2 = bodies[2] - earth_3 = bodies[3] - earth_4 = bodies[4] + # 四季 + seasons_angles = [("春天", -135, -45), ("夏天", -180, -135), + ("夏天", 135, 180), ("秋天", 45, 135), ("冬天", -45, 45)] - def on_ready(): - # 摄像机跟随地球（模拟在地球上看到的效果） - # camera.position = earth.planet.position - # camera.forward = -10 * AU - # # camera.x = camera.x - AU / 100 - # camera.look_at(earth.planet) - earth_1.planet.rotation_y += 115 # 春天 - earth_2.planet.rotation_y += 15 # 夏天 - earth_3.planet.rotation_y -= 80 # 秋天 - earth_4.planet.rotation_y -= 145 # 冬天 + # 中国农历24节气表 + solar_terms_angles = [ + ("小寒", -22.5, -7.5), ("大寒", -37.5, -22.5), ("立春", -52.5, -37.5), ("雨水", -67.5, -52.5), + ("惊蛰", -82.5, -67.5), ("春分", -97.5, -82.5), ("清明", -112.5, -97.5), ("谷雨", -127.5, -112.5), + ("立夏", -142.5, -127.5), ("小满", -157.5, -142.5), ("芒种", -172.5, -157.5), + ("夏至", -180, -172.5), ("夏至", 172.5, 180), + ("小暑", 157.5, 172.5), ("大暑", 142.5, 157.5), ("立秋", 127.5, 142.5), ("处暑", 112.5, 127.5), + ("白露", 97.5, 112.5), ("秋分", 82.5, 97.5), ("寒露", 67.5, 82.5), ("霜降", 52.5, 67.5), + ("立冬", 37.5, 52.5), ("小雪", 22.5, 37.5), ("大雪", 7.5, 22.5), ("冬至", -7.5, 7.5)] - # camera.parent = sun.planet - camera.look_at(earth_1.planet) - camera.rotation_z = 0 - # camera.position=[0,0,0] - pass - # if hasattr(camera, "sky"): - # # 摄像机跟随地球后，需要对深空背景进行调整，否则看到的是黑色背景 - # camera.sky.scale = 800 - # camera.clip_plane_near = 0.1 - # camera.clip_plane_far = 1000000 - # # camera.fov = 40 + def on_ready(): + # 将 4 个节气位置的地球进行旋转，让中国面对太阳 + earth_1.planet.rotation_y += 115 # 春分 + earth_2.planet.rotation_y += 15 # 夏至 + earth_3.planet.rotation_y -= 80 # 秋分 + earth_4.planet.rotation_y -= 145 # 冬至 def on_timer_changed(time_data: TimeData): - # 时时刻刻的让地球看向太阳（摄像机跟随地球看向太阳） - # earth.planet.look_at(sun.planet) - # earth.planet.rotation_z = 0 - # camera.look_at(earth.planet) - pass + # 摄像机始终看向移动的地球 + camera.look_at(earth.planet) + camera.rotation_z = 0 + # 根据角度判断，显示中国农历24节气 + for info in solar_terms_angles: + if info[1] <= camera.rotation_y < info[2]: + earth.planet.name_text.text = info[0] + # print(camera.rotation_y) UrsinaEvent.on_ready_subscription(on_ready) @@ -74,6 +87,7 @@ 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, 1, position=(0, 0, 0), + ursina_run(bodies, SECONDS_PER_DAY * 3, + position=(0, 0, 0), # 摄像机和太阳是相同位置 show_name=True, - show_trail=True) + show_timer=True) diff --git a/textures/earth_transparent.png b/textures/earth_transparent.png new file mode 100644 index 0000000000000000000000000000000000000000..dbd38c778c8e1c48a2874df8c6d3399c216ad997 Binary files /dev/null and b/textures/earth_transparent.png differ