Python超人-宇宙模拟器

sim_scenes/solar_system/halley_comet_sim.py

@@ -13,8 +13,9 @@ from ursina import camera, application
 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_YEAR, AU
+from common.func import calculate_distance
 from objs import HalleComet, Obj
-from sim_scenes.func import camera_look_at, two_bodies_colliding
+from sim_scenes.func import camera_look_at, two_bodies_colliding, create_text_panel
 from sim_scenes.func import ursina_run, create_sphere_sky
 from simulators.ursina.ursina_event import UrsinaEvent
 
@@ -34,7 +35,7 @@ class HalleyCometSim:
             self.sun,  # 太阳放大 80 倍
             # Mercury(size_scale=4e3, distance_scale=1.3),  # 水星放大 4000 倍，距离放大 1.3 倍
             # Venus(size_scale=4e3, distance_scale=1.3),  # 金星放大 4000 倍，距离放大 1.3 倍
-            # Earth(size_scale=4e3, distance_scale=1.3, rotate_angle=0),  # 地球放大 4000 倍，距离放大 1.3 倍
+            Earth(size_scale=4e3, distance_scale=1.3, rotate_angle=0),  # 地球放大 4000 倍，距离放大 1.3 倍
             # Mars(size_scale=4e3, distance_scale=1.2),  # 火星放大 4000 倍，距离放大 1.2 倍
             Jupiter(size_scale=1.68e3, distance_scale=1),  # 木星放大 680 倍，距离缩小到真实距离的 0.72
             Saturn(size_scale=1.68e3, distance_scale=1),  # 土星放大 680 倍，距离缩小到真实距离的 0.52
@@ -55,16 +56,17 @@ class HalleyCometSim:
         # 每76.1年环绕太阳一周的周期彗星
         # 3.335, 0, 10.7   73
         # 3.33, 0, 10.7     73
-
-        self.halley_comet = HalleComet(# size_scale=4e7,
-                                    size_scale=1e8,
-                                    init_velocity=[3.33, 0, 10.65],  # [3.33, 0, 10.6] < ? <[3.34, 0, 10.7]
-                                    init_position=[0, 0.5 * AU, -10 * AU]) \
+        # [3.33, 0, 10.65]  71
+        # [3.33, 0, 10.655] 68
+        # [3.33, 0, 10.66]  69
+        self.halley_comet = HalleComet(  # size_scale=4e7,
+            size_scale=1e8,
+            init_velocity=[3.33, 0, 10.699],  # [3.33, 0, 10.6] < ? <[3.34, 0, 10.7]
+            init_position=[0, 0.5 * AU, -10 * AU]) \
             .set_light_disable(True)
 
         self.bodies.append(self.halley_comet)
 
-
     def build(self):
         self.build_solar_system()
         self.build_halley_comet()
@@ -80,7 +82,7 @@ class HalleyCometSim:
         create_sphere_sky(scale=200000)
         application.time_scale = 5
 
-
+        self.text_panel = create_text_panel()
 
     def on_timer_changed(self, time_data):
         """
@@ -94,7 +96,8 @@ class HalleyCometSim:
             self.halley_comet.planet.rotation_y += 1
         # 摄像机始终看向二向箔
         # camera_look_at(self.halley_comet)
-
+        d = calculate_distance(self.halley_comet.position, self.sun.position)
+        self.text_panel.text = "哈雷彗星距离太阳：%.3f AU" % (d / AU)
 
 
 if __name__ == '__main__':