Python超人-宇宙模拟器

sim_scenes/earth/earth_3d.py

@@ -7,17 +7,23 @@
 # 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, camera_look_at
+from common.consts import SECONDS_PER_HOUR, SECONDS_PER_DAY, AU
+from sim_scenes.func import ursina_run, camera_look_at, create_3d_card
 from simulators.ursina.entities.body_timer import TimeData
+from simulators.ursina.entities.camera3d import Camera3d
+from simulators.ursina.ursina_config import UrsinaConfig
 from simulators.ursina.ursina_event import UrsinaEvent
+from ursina import camera
 
 if __name__ == '__main__':
     """
     地球3D效果
+    # sim_video_3d_cap.bat earth earth_3d
     """
     # 创建带有云层的地球
-    earth = Earth(texture="earth_hd_trans.png",
+    earth = Earth(
+        # texture="earth_hd.jpg",
+        texture="earth_hd_trans.png",
         rotate_angle=-23.44,
         init_position=[0, 0, 0],
         init_velocity=[0, 0, 0],
@@ -28,29 +34,51 @@ if __name__ == '__main__':
                    size_scale=1.001, parent=earth)
 
     bodies = [earth, clouds]
+    # camera.camera_pos = "right"
+    # camera_l2r = 0.002 * AU * UrsinaConfig.SCALE_FACTOR
+    #
+    #
+    # def switch_position():
+    #     if camera.camera_pos == "right":  # 摄像机右眼
+    #         camera.world_position[0] -= 2 * camera_l2r
+    #         camera.camera_pos = "left"
+    #     elif camera.camera_pos == "left":  # 摄像机左眼
+    #         camera.world_position[0] += 2 * camera_l2r
+    #         camera.camera_pos = "right"
+    #
+    #
+    # camera.switch_position = switch_position
 
 
     def on_ready():
-        from ursina import camera
+        earth.camera3d = Camera3d()
+        earth.camera3d.position = (1.45 * earth.radius * UrsinaConfig.SCALE_FACTOR,
+                                   0,
+                                   -30000 * UrsinaConfig.SCALE_FACTOR)
+
         # camera_look_at(earth, rotation_z=0)
         # camera.fov = 40
+        earth._3d_card = create_3d_card()
 
+    def on_before_evolving(evolve_args):
+        earth._3d_card.switch_color()
+        earth.camera3d.switch_position()
+        if earth._3d_card.switch_flag == 1:
+            evolve_args["evolve_dt"] = 0.0
 
-    def on_timer_changed(time_data: TimeData):
-        pass
-
-
+    # 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)
-    # 订阅事件后，上面的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(on_timer_changed)
+    UrsinaEvent.on_before_evolving_subscription(on_before_evolving)
 
     # 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=(1.2 * earth.radius, 0, -30000),
+    ursina_run(bodies, SECONDS_PER_HOUR,
+               # position=(1.2 * earth.radius, 0, -30000),
+               position=(0, 0, 0),
                show_grid=False,
+               show_camera_info=False,
+               show_control_info=False,
                cosmic_bg="none",
                view_closely=0.001)  # 近距离观看 view_closely=True或0.001

simulators/ursina/entities/camera3d.py

+# -*- coding:utf-8 -*-
+# title           :创建一个宇宙网格对象
+# description     :创建一个宇宙网格对象
+# author          :Python超人
+# date            :2023-02-11
+# link            :https://gitcode.net/pythoncr/
+# python_version  :3.8
+# ==============================================================================
+from ursina import Entity, camera
+
+from common.consts import AU
+from simulators.ursina.ursina_config import UrsinaConfig
+
+
+class Camera3d(Entity):
+    def __init__(self, **kwargs):
+        super().__init__()
+        for key, value in kwargs.items():
+            setattr(self, key, value)
+
+        camera.parent = self
+        self.camera_pos = "right"
+        # self.camera_l2r = 0.002 * AU * UrsinaConfig.SCALE_FACTOR
+        self.camera_l2r = 0.0005
+
+    def switch_position(self):
+        if self.camera_pos == "right":  # 摄像机右眼
+            self.x -= 2 * self.camera_l2r
+            self.camera_pos = "left"
+        elif self.camera_pos == "left":  # 摄像机左眼
+            self.x += 2 * self.camera_l2r
+            self.camera_pos = "right"
+
+    def update(self):
+        pass