Python超人-宇宙模拟器

sim_scenes/earth/free_fall_of_ball.py

+# -*- coding:utf-8 -*-
+# title           :地月场景模拟
+# description     :地月场景模拟
+# author          :Python超人
+# date            :2023-02-11
+# link            :https://gitcode.net/pythoncr/
+# python_version  :3.8
+# ==============================================================================
+from bodies import Moon, Earth, Body
+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 bodies.body import AU
+
+if __name__ == '__main__':
+    """
+    地球、6个月球
+    """
+    # 地球在中心位置
+    e = Earth(init_position=[0, 0, 0], size_scale=1, texture="earth_hd.jpg", init_velocity=[0, 0, 0])
+    bodies = [
+        e,
+        Moon(name='小球', mass=4.4e18, init_position=[0, e.raduis + 500, 0], init_velocity=[0, 0, 0]),  # 球在地球上面500km
+    ]
+
+    # 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, 60, position=(0, e.raduis + 500, -4500), show_trail=True, view_closely=0.001)

sim_scenes/solar_system/earth_moon6.py

@@ -15,18 +15,16 @@ if __name__ == '__main__':
     """
     地球、6个月球
     """
-    # 地球的Y方向初始速度
-    EARTH_INIT_VELOCITY = 0
     # 地球在中心位置
     e = Earth(init_position=[0, 0, 0], texture="earth_hd.jpg", init_velocity=[0, 0, 0])
     bodies = [
         e,
-        Moon(init_position=[e.diameter, 0, 0], init_velocity=[0, 0, 0]),   # 月球在地球前面
-        Moon(init_position=[-e.diameter, 0, 0], init_velocity=[0, 0, 0]),  # 月球在地球后面
-        Moon(init_position=[0, e.diameter, 0], init_velocity=[0, 0, 0]),   # 月球在地球左面
-        Moon(init_position=[0, -e.diameter, 0], init_velocity=[0, 0, 0]),  # 月球在地球右面
-        Moon(init_position=[0, 0, e.diameter], init_velocity=[0, 0, 0]),   # 月球在地球上面
-        Moon(init_position=[0, 0, -e.diameter], init_velocity=[0, 0, 0]),  # 月球在地球下面
+        Moon(init_position=[e.diameter, 0, 0], init_velocity=[0, 0, 0]),   # 月球在地球右面
+        Moon(init_position=[-e.diameter, 0, 0], init_velocity=[0, 0, 0]),  # 月球在地球左面
+        Moon(init_position=[0, e.diameter, 0], init_velocity=[0, 0, 0]),   # 月球在地球上面
+        Moon(init_position=[0, -e.diameter, 0], init_velocity=[0, 0, 0]),  # 月球在地球下面
+        Moon(init_position=[0, 0, e.diameter], init_velocity=[0, 0, 0]),   # 月球在地球前面
+        Moon(init_position=[0, 0, -e.diameter], init_velocity=[0, 0, 0]),  # 月球在地球后面
     ]
 
     # 使用 ursina 查看的运行效果

simulators/ursina/entities/body_trail.py

@@ -38,12 +38,13 @@ class BodyTrail(Entity):
         if self.hovered:
             if key == 'left mouse down':
                 # print(key, self)
-                if hasattr(self, "entity_infos"):
                 self.show_infos()
 
     def show_infos(self):
+        if not hasattr(self, "entity_infos"):
+            return
         if not hasattr(self, "origin_alpha"):
-            self.origin_color = self.color
+            # self.origin_color = self.color
             self.origin_alpha = self.alpha
 
         if len(self.children) > 0:
@@ -52,7 +53,7 @@ class BodyTrail(Entity):
             # self.color = self.origin_color
             self.alpha = self.origin_alpha
             return
-        self.alpha = 0.2
+        self.alpha = 0.3
         # self.color = get_inverse_color(self.origin_color)
 
         vel_info, vel_direction, vel_position = self.entity_infos["velocity"]
@@ -66,7 +67,7 @@ class BodyTrail(Entity):
             v_line.enabled = False
 
         a_arrow, a_line, a_text = create_arrow_line((0, 0, 0), tuple(acc_direction), parent=self,
-                                                    label=acc_info, color=color.yellow, alpha=0.8, arrow_scale=0.5)
+                                                    label=acc_info, color=color.green, alpha=0.8, arrow_scale=0.5)
         if str(acc_info).startswith("0.00"):
             a_text.parent = self
             a_arrow.enabled = False