From 1f7193280f5ecd2e79672d38bc6179d5a737c66a Mon Sep 17 00:00:00 2001 From: march3 Date: Sat, 8 Apr 2023 20:22:35 +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?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- sim_scenes/func.py | 19 ++++++++++++++++++ sim_scenes/solar_system/earth_moon.py | 24 ++++++++++++++++------- sim_scenes/solar_system/sun_earth_moon.py | 11 +++++------ 3 files changed, 41 insertions(+), 13 deletions(-) diff --git a/sim_scenes/func.py b/sim_scenes/func.py index 7bcb635..14c9c6e 100644 --- a/sim_scenes/func.py +++ b/sim_scenes/func.py @@ -56,6 +56,25 @@ def mayavi_run(bodies, dt=SECONDS_PER_WEEK, mlab.show() +def camera_look_at(body, rotation_x=None, rotation_y=None, rotation_z=None): + """ + 让摄像机看向指定天体 + @param body: 天体 + @param rotation_x: x轴旋转角度（None表示不旋转） + @param rotation_y: y轴旋转角度（None表示不旋转） + @param rotation_z: z轴旋转角度（None表示不旋转） + @return: + """ + from ursina import camera + camera.look_at(body.planet) + if rotation_x is not None: + camera.rotation_x = rotation_x + if rotation_y is not None: + camera.rotation_y = rotation_y + if rotation_z is not None: + camera.rotation_z = rotation_z + + def ursina_run(bodies, dt=SECONDS_PER_HALF_DAY, position=(0, 0, 0), diff --git a/sim_scenes/solar_system/earth_moon.py b/sim_scenes/solar_system/earth_moon.py index 629a390..f316ab8 100644 --- a/sim_scenes/solar_system/earth_moon.py +++ b/sim_scenes/solar_system/earth_moon.py @@ -8,25 +8,35 @@ # ============================================================================== from bodies import Sun, Earth, Moon from common.consts import SECONDS_PER_HOUR, SECONDS_PER_HALF_DAY, SECONDS_PER_DAY, SECONDS_PER_WEEK, SECONDS_PER_MONTH -from sim_scenes.func import mayavi_run, ursina_run +from sim_scenes.func import mayavi_run, ursina_run, camera_look_at from bodies.body import AU +from simulators.ursina.ursina_event import UrsinaEvent if __name__ == '__main__': """ 地球、月球 """ - # 地球的Y方向初始速度 - EARTH_INIT_VELOCITY = 0 + OFFSETTING = 0 + # TODO: 抵消月球带动地球的力 + # OFFSETTING = 0.01265 bodies = [ # sun, Earth(init_position=[0, 0, 0], texture="earth_hd.jpg", - init_velocity=[-EARTH_INIT_VELOCITY, 0, 0], size_scale=0.5e1), # 地球放大 5 倍，距离保持不变 + init_velocity=[OFFSETTING, 0, 0], size_scale=0.5e1), # 地球放大 5 倍，距离保持不变 Moon(init_position=[0, 0, 363104], # 距地距离约: 363104 至 405696 km - init_velocity=[-(EARTH_INIT_VELOCITY + 1.023), 0, 0], size_scale=1e1) # 月球放大 10 倍，距离保持不变 + init_velocity=[-1.03, 0, 0], size_scale=1e1) # 月球放大 10 倍，距离保持不变 ] - # mayavi_run(bodies, SECONDS_PER_HALF_DAY / 2, view_azimuth=-45) + + def on_ready(): + earth = bodies[0] + camera_look_at(earth) + + 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_MONTH, position=(-300000, 200000, -1300000), show_trail=True) + ursina_run(bodies, SECONDS_PER_MONTH, + position=(-300000, 1500000, -1000), + show_timer=True, + show_trail=True) diff --git a/sim_scenes/solar_system/sun_earth_moon.py b/sim_scenes/solar_system/sun_earth_moon.py index a207118..5486d14 100644 --- a/sim_scenes/solar_system/sun_earth_moon.py +++ b/sim_scenes/solar_system/sun_earth_moon.py @@ -8,7 +8,7 @@ # ============================================================================== from bodies import Sun, Earth, Moon from common.consts import SECONDS_PER_HOUR, SECONDS_PER_HALF_DAY, SECONDS_PER_DAY, SECONDS_PER_WEEK, SECONDS_PER_MONTH -from sim_scenes.func import mayavi_run, ursina_run +from sim_scenes.func import mayavi_run, ursina_run, camera_look_at from bodies.body import AU from simulators.ursina.ursina_event import UrsinaEvent @@ -41,17 +41,16 @@ if __name__ == '__main__': moon ] + def on_timer_changed(time_data): - from ursina import camera,Vec3 + camera_look_at(moon, rotation_z=0) - camera.look_at(moon.planet) - camera.rotation_z = 0 - # 订阅计时器事件（记录已到达天体列表） + # 订阅计时器事件（定时触发） 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- # position=(0, 0, 0) 的位置是站在地球视角，可以观看月相变化的过程 - ursina_run(bodies, SECONDS_PER_DAY, position=(0, 0, 0),show_timer=True) + ursina_run(bodies, SECONDS_PER_DAY, position=(0, 0, 0), show_timer=True) -- GitLab