From ecda749afbe07b153ef04fdabf76b229161cbcfb Mon Sep 17 00:00:00 2001 From: march3 Date: Mon, 23 Oct 2023 09:34:15 +0800 Subject: [PATCH] =?UTF-8?q?Python=E8=B6=85=E4=BA=BA-=E5=AE=87=E5=AE=99?= =?UTF-8?q?=E6=A8=A1=E6=8B=9F=E5=99=A8(=E4=BB=A3=E7=A0=81=E5=A4=87?= =?UTF-8?q?=E4=BB=BD=EF=BC=8C=E4=BB=A3=E7=A0=81=E7=9A=84=E6=B8=85=E7=90=86?= =?UTF-8?q?=E6=9C=AA=E5=88=A0=E9=99=A4)?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- sim_scenes/science/earth_seasons_2.py | 140 ++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 sim_scenes/science/earth_seasons_2.py diff --git a/sim_scenes/science/earth_seasons_2.py b/sim_scenes/science/earth_seasons_2.py new file mode 100644 index 0000000..180b8d0 --- /dev/null +++ b/sim_scenes/science/earth_seasons_2.py @@ -0,0 +1,140 @@ +# -*- coding:utf-8 -*- +# title :地球季节模拟（四季和24节气） +# description :地球季节模拟（四季和24节气） +# author :Python超人 +# date :2023-10-23 +# link :https://gitcode.net/pythoncr/ +# python_version :3.8 +# ============================================================================== +from ursina import camera + +from bodies import Sun, Earth +from common.consts import SECONDS_PER_DAY, AU +from sim_scenes.func import ursina_run, camera_look_at, create_sphere_sky +from simulators.ursina.entities.body_timer import TimeData, BodyTimer +from simulators.ursina.ursina_event import UrsinaEvent + + +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: + """ + earth = 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 + + return earth + + +if __name__ == '__main__': + """ + 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-huge.jpg", + text_color=[255, 255, 255], rotation_speed=0.5, # 为演示效果，自转角速度取0.5度/小时，实际为15度/小时 + init_position=[-1 * AU, 0, 0], init_velocity=[0, 0, -29.79]) + + # 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="", texture="transparent_clouds.png", + rotation_speed=0.51, show_name=False, + size_scale=1.01 * 5e3, parent=earth) + + # 地球立春的位置和速度 + earth.init_position = [-9.1507536e+07, 0.0000000e+00, 1.1907757e+08] + earth.init_velocity = [-23.550875, 0., -18.05398] + + earth.rotate_axis_color = (255, 255, 50) + earth.rotate_axis_scale = 0.62 + + bodies = [ + sun, earth, earth_clouds, + earth_1, earth_2, earth_3, earth_4, + ] + + # 中国农历24节气表，数据为 节气名称 和 camera.rotation_y 的角度范围值 + 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)] + + + 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 + # camera.clip_plane_far = 1000000 + sky = create_sphere_sky(scale=8000) + sky.rotation_y = 100 + sky.rotation_x = 20 + sky.rotation_z = -65 + + earth_clouds.name_text.enabled = False + + + def earth_text_display(term_name): + """ + 控制4个透明地球文本是否显示，防止地球文字的叠加 + @param term_name: + @return: + """ + for e in [earth_1, earth_2, earth_3, earth_4]: + if term_name == e.name: + e.name_text.enabled = False + else: + e.name_text.enabled = True + + + def on_timer_changed(time_data: TimeData): + # 摄像机始终看向移动的地球 + camera_look_at(earth, rotation_z=0) + # 根据角度范围判断，显示中国农历24节气 + for info in solar_terms_angles: + if info[1] <= camera.rotation_y < info[2]: + term_name = info[0] + # 控制4个透明地球文本是否显示，防止地球文字的叠加 + earth_text_display(term_name) + # 地球名称文字显示为相应的节气 + earth.name_text.text = term_name + # if term_name == "立春": # 找到立春的位置和速度 + # print("position", earth.position) + # print("velocity", earth.velocity) + + # print(camera.rotation_y) + + + # 订阅事件后，上面2个函数功能才会起作用 + # 运行前会触发 on_ready + UrsinaEvent.on_ready_subscription(on_ready) + # 运行中，每时每刻都会触发 on_timer_changed + UrsinaEvent.on_timer_changed_subscription(on_timer_changed) + # 设置计时器的最小时间单位为天 + BodyTimer().min_unit = BodyTimer.MIN_UNIT_DAYS + # 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 * 2, + position=(0, 0, 0), # 摄像机和太阳是相同位置 + cosmic_bg='', + show_grid=False, + show_camera_info=False, + show_control_info=False, + show_name=True, + timer_enabled=True, + show_timer=False) -- GitLab