From 9d2b11211e1f9f095cdbae520ff81db9d38b3c18 Mon Sep 17 00:00:00 2001 From: march3 Date: Sat, 11 Nov 2023 22:03:25 +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/tri_bodies/one_way_foil.py | 320 ++++++++++++++++++++++++++ 1 file changed, 320 insertions(+) create mode 100644 sim_scenes/tri_bodies/one_way_foil.py diff --git a/sim_scenes/tri_bodies/one_way_foil.py b/sim_scenes/tri_bodies/one_way_foil.py new file mode 100644 index 0000000..c5906fc --- /dev/null +++ b/sim_scenes/tri_bodies/one_way_foil.py @@ -0,0 +1,320 @@ +# -*- coding:utf-8 -*- +# title :三体一向箔场景模拟 +# description :三体一向箔场景模拟 +# author :Python超人 +# date :2023-10-27 +# link :https://gitcode.net/pythoncr/ +# python_version :3.9 +# ============================================================================== +import time + +from ursina import camera, application, lerp + +from bodies import Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto +from common.celestial_data_service import get_init_pos_vels, init_bodies_pos_vels +from common.consts import SECONDS_PER_WEEK, AU +from common.image_utils import resize_image +from objs import QuadObj, CircleObj, Obj +from sim_scenes.func import camera_look_at, two_bodies_colliding +from sim_scenes.func import ursina_run, create_sphere_sky +from simulators.ursina.ursina_event import UrsinaEvent +from simulators.func import ext_fun_for_method + + +class OneWayFoilSim: + """ + 三体一向箔场景模拟 + """ + + def __init__(self): + self.current_stage = self.stage_01 + + def build_solar_system(self): + # region 构建太阳系 + self.sun, self.mercury, self.venus, self.earth, self.mars, self.jupiter, \ + self.saturn, self.uranus, self.neptune, self.pluto = \ + Sun(size_scale=0.8e2), \ + Mercury(size_scale=2e3, distance_scale=1.5), \ + Venus(size_scale=2e3, distance_scale=1.5), \ + Earth(size_scale=2e3, distance_scale=1.5, rotate_angle=0), \ + Mars(size_scale=2e3, distance_scale=1.4), \ + Jupiter(size_scale=0.3e3, distance_scale=0.72), \ + Saturn(size_scale=0.3e3, distance_scale=0.52), \ + Uranus(size_scale=0.8e3, distance_scale=0.36), \ + Neptune(size_scale=0.8e3, distance_scale=0.27), \ + Pluto(size_scale=10e3, distance_scale=0.23) + + self.bodies = [ + self.sun, self.mercury, self.venus, self.earth, self.mars, self.jupiter, + self.saturn, self.uranus, self.neptune, self.pluto + ] + # endregion + + self.two_way_foil_dt_factor = 1 + self.sun.two_way_foil_dt = 0.003 * self.two_way_foil_dt_factor + self.saturn.two_way_foil_dt = 0.005 * self.two_way_foil_dt_factor + self.uranus.two_way_foil_dt = 0.002 * self.two_way_foil_dt_factor + + init_bodies_pos_vels(self.bodies) + + def build_two_way_foil(self): + """ + 创建一向箔（一个原始的方形一向箔，一个不断扩展的圆形一向箔） + @return: + """ + # 原始的方形一向箔 + self.two_way_foil = QuadObj(texture='two_way_foil.png', + # size_scale=4e7, + size_scale=1e7, + init_velocity=[0, -50, 60], + init_position=[0, 5 * AU, -6 * AU]) \ + .set_light_disable(True).set_ignore_gravity(True) + # 不断扩展的圆形一向箔 + self.two_way_foil_circle = CircleObj(texture="two_way_foil_circle.png", + size_scale=self.two_way_foil.size_scale * 2, + ) \ + .set_light_disable(True).set_ignore_gravity(True) + + self.bodies.append(self.two_way_foil) + self.bodies.append(self.two_way_foil_circle) + + def build(self): + self.build_solar_system() + self.build_two_way_foil() + + def on_ready(self): + """ + 事件绑定后，模拟器运行前会触发 + @return: + """ + # 创建天空 + # camera.clip_plane_near = 0.1 + camera.clip_plane_far = 1000000 + create_sphere_sky(scale=200000) + application.time_scale = 5 + # 圆形一向箔初始化（一开始不显示） + self.two_way_foil_circle.planet.rotation_x = 90 + self.two_way_foil_circle.planet.enabled = False + + def change_two_way_foil(): + # 长方形膜状物，长八点五厘米，宽五点二厘米，比一张信用卡略大一些，极薄，看不出任何厚度。 + # 封装状态下晶莹剔透、无色透明。待机模式下由于封装力场逐渐蒸发，会发出白光，使其表面呈纯白色，看上去就是一张纸条 + self.two_way_foil.planet.scale_x = 8.5 + self.two_way_foil.planet.scale_y = 0.1 + + ext_fun_for_method(self.two_way_foil.planet, after_run_fun=change_two_way_foil) + + def change_two_way_foil_circle(): + if hasattr(self.two_way_foil_circle.planet, "start_scale"): + # 长方形膜状物，长八点五厘米，宽五点二厘米，比一张信用卡略大一些，极薄，看不出任何厚度。 + # 封装状态下晶莹剔透、无色透明。待机模式下由于封装力场逐渐蒸发，会发出白光，使其表面呈纯白色，看上去就是一张纸条 + self.two_way_foil_circle.planet.start_scale += 0.3 + self.two_way_foil_circle.planet.scale_x = self.two_way_foil_circle.planet.start_scale + self.two_way_foil_circle.planet.scale_y = 1 + self.two_way_foil_circle.planet.scale_z = 1 + + # 'box'/'sphere'/'capsule'/'mesh' + self.two_way_foil_circle.planet.collider = "sphere" + ext_fun_for_method(self.two_way_foil_circle.planet, after_run_fun=change_two_way_foil_circle) + + def gen_pixcel_image(self, planet): + """ + 将纹理图改为像素图片 + @param planet: + @return: + """ + import os + if planet.texture is None: + return + in_img = str(planet.texture.path) + if "_pixcel" in in_img: + return + out_img = os.path.split(in_img) + out_file = out_img[1].split('.') + out_file = f'{out_file[0]}_pixcel.{out_file[1]}' + out_img = os.path.abspath(os.path.join(out_img[0], "temp", out_file)) + if not os.path.exists(out_img): + resize_image(in_img, out_img, 50, 25) + from ursina import Texture + planet.texture = Texture(out_img) + + return out_img + + def flatten_animation(self, body): + """ + 天体二维化的动画 + @param body: 天体 + @return: + """ + + def flatten_update(planet): + def warp(): + # 原始的 update 方法中有计算天体的运行 + planet.init_update() + + # 对Y轴进行压平动画，如果压平大小不足 1/50，则继续压缩，直到压缩到 1/50 就不压缩了 + # （如果觉得 1/50 的厚度压的不够，还可以继续压缩，基本上就够了） + # if planet.scale_y_v > planet.init_scale_y / 50: + if planet.scale_y_v > 0.5: + planet.scale_y_v /= 1.01 + else: + self.gen_pixcel_image(planet) + planet.scale_x_v += 0.05 + + # 灯光关闭，不然压到2纬就会是黑色 + planet.set_light_off(True) + planet.scale_y = planet.scale_y_v + planet.scale_x = planet.scale_x_v + planet.scale_z = planet.scale_y_v + + return warp + + body.is_2d = True + # 压平时，转速将为以前的 1/200 + body.planet.rotation_speed /= 200 + # 记录原始的厚度大小 + body.planet.scale_y_v = body.planet.scale_y + body.planet.init_scale_y = body.planet.scale_y + + body.planet.scale_x_v = body.planet.scale_x + body.planet.init_scale_x = body.planet.scale_x + # 原始的 update 方法中有计算天体的运行，需要保留 + body.planet.init_update = body.planet.update + # 替换 update + body.planet.update = flatten_update(body.planet) + + def get_target(self): + for body in self.bodies: + if hasattr(body, "is_2d"): + continue + return body + return None + + def stage_01(self): + """ + 一向箔飞向太阳 + @return: + """ + + # 如果一向箔和太阳碰撞 + if two_bodies_colliding(self.two_way_foil, self.sun): + # 隐藏原始一向箔，保持在原地，不在飞行 + # self.two_way_foil.planet.enabled = False + self.two_way_foil.init_velocity = [0, 0, 0] + + def two_way_foil_update(): + target = self.get_target() + + if target is self.sun: + # 关闭太阳的光晕 + self.sun.hide_children() + + # 让实体A朝向实体B + # self.two_way_foil.planet.look_at(target) + if target is not None: + # 让实体A向着实体B移动 + dt = target.two_way_foil_dt if hasattr(target, "two_way_foil_dt") \ + else 0.003 * self.two_way_foil_dt_factor + # current_time = time.time() + # if current_time - self.two_way_foil.last_time >= 0.1: + # dt = dt * 2 + # self.two_way_foil.last_time = current_time + # target.two_way_foil_dt = dt + self.two_way_foil.planet.position = \ + lerp(self.two_way_foil.planet.position, target.planet.position, dt) + else: + self.two_way_foil.planet.enabled = False + + self.two_way_foil.planet.update = two_way_foil_update + # # 圆形一向箔显示并设置透明度为0.8 + self.two_way_foil_circle.planet.alpha = 0.8 + self.two_way_foil_circle.planet.enabled = True + self.two_way_foil_circle.planet.start_scale = 1 + + # 当前阶段为 stage_02：一向箔压平天体的阶段 + self.current_stage = self.stage_02 + + def stage_02(self): + """ + 一向箔压平天体（二维化）的阶段 + @return: + """ + self.two_way_foil.planet.enabled = False + # self.sun.two_dim.planet.init_scale += 0.05 + # 圆形一向箔不断扩展变大 + self.two_way_foil.planet.init_scale += 8 + # 调整天体二维化的时间，一般需要延时，保证扩展和二维化同步的真实效果 + two_way_delay_times = [0.5, # 太阳 + 0.5, 0.8, 1.0, # 水星 金星 地球 + 1.2, 2.0, 3.0, # 火星 木星 土星 + 4.0, 4.5, 5.5] # 天王星 海王星 冥王星 + for idx, b in enumerate(self.bodies): + if isinstance(b, Obj): + # 一向箔不处理 + continue + if hasattr(b, "two_way_time"): + # 一向箔和天体碰撞的时间不为空，则说明已经碰撞 + if b.two_way_time is not None: + # 如果碰撞后的延时时间到，则进行压平天体处理（二维化） + if time.time() - b.two_way_time > two_way_delay_times[idx]: + self.flatten_animation(b) + # 一向箔和天体碰撞的时间设置为空，就是说明二维化结束 + b.two_way_time = None + elif two_bodies_colliding(self.two_way_foil_circle, b): + # 一向箔和天体碰撞，但暂时先不二维化，记下时间，延时二维化 + b.two_way_time = time.time() + + # 圆形一向箔不断旋转的效果 + self.two_way_foil_circle.planet.rotation_z += 4 + + def on_timer_changed(self, time_data): + """ + + @param time_data: + @return: + """ + # 原始方形一向箔飞行的翻转效果 + if self.two_way_foil.planet.enabled: + self.two_way_foil.planet.rotation_x += 0.1 + self.two_way_foil.planet.rotation_y += 1 + # # 摄像机始终看向一向箔 + # camera_look_at(self.two_way_foil) + + target = self.get_target() + if target is not None: + if target is self.sun: + # 摄像机始终看向一向箔 + camera_look_at(self.two_way_foil) + else: + # 摄像机始终看向一向箔 + camera_look_at(self.two_way_foil, rotation_z=0) + camera.position = \ + lerp(camera.position, target.planet.position, 0.001) + + self.current_stage() + + +if __name__ == '__main__': + """ + 三体一向箔场景模拟 + """ + sim = OneWayFoilSim() + sim.build() + # 订阅事件后，上面2个函数功能才会起作用 + # 运行中，每时每刻都会触发 on_timer_changed + UrsinaEvent.on_timer_changed_subscription(sim.on_timer_changed) + # 运行前会触发 on_ready + UrsinaEvent.on_ready_subscription(sim.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(sim.bodies, + SECONDS_PER_WEEK, + # position=(0, 2 * AU, -11 * AU), + position=(0, 5 * AU, -5 * AU), + cosmic_bg='', + bg_music='sounds/no_glory.mp3', + show_camera_info=False, + show_control_info=False, + timer_enabled=True, + show_grid=False) -- GitLab