Python超人-宇宙模拟器

sim_scenes/fiction/earth_orbit_stopped.py

@@ -19,7 +19,7 @@ from simulators.ursina.ursina_config import UrsinaConfig
 from simulators.ursina.ursina_event import UrsinaEvent
 from ursina import application, camera, Vec3
 import math
-from simulators.ursina.ursina_mesh import create_circle_line
+from simulators.ursina.ursina_mesh import create_circle_line, create_orbit_line
 from ursina import color
 
 
@@ -32,7 +32,7 @@ class EarthOrbitStoppedSim:
 
     def __init__(self):
         self.sun = Sun(init_position=[0, 0, 0], size_scale=1)
-        self.earth = Earth(init_position=[0, 0, -AU], # texture="earth2.jpg",
+        self.earth = Earth(init_position=[0, 0, -AU],  # texture="earth2.jpg",
                            init_velocity=[0, self.EARTH_INIT_VELOCITY, 0],
                            size_scale=1).set_light_disable(True)
         # 水星轨道半径
@@ -73,7 +73,7 @@ class EarthOrbitStoppedSim:
         """
         orbit_line = create_circle_line(parent=self.sun, radius=radius, thickness=5, color=color, alpha=0.3)
         orbit_line.rotation_x = 90
-        orbit_line.enabled = False # 默认不显示
+        orbit_line.enabled = False  # 默认不显示
         return orbit_line
 
     def on_ready(self):
@@ -89,13 +89,9 @@ class EarthOrbitStoppedSim:
             replace("${acceleration}", "0")
 
         # 创建水星轨道线
-        self.mercury_orbit_line = self.create_orbit_line(
-            radius=self.mercury_radius * UrsinaConfig.SCALE_FACTOR,
-            color=self.mercury.color)
+        self.mercury_orbit_line = create_orbit_line(self.sun, self.mercury)
         # 创建金星轨道线
-        self.venus_orbit_line = self.create_orbit_line(
-            radius=self.venus_radius * UrsinaConfig.SCALE_FACTOR,
-            color=self.venus.color)
+        self.venus_orbit_line = create_orbit_line(self.sun, self.venus)
 
     def on_timer_changed(self, time_data: TimeData):
         # 摄像机时时刻刻看向地球

sim_scenes/solar_system/halley_comet_sim.py

@@ -33,15 +33,15 @@ class HalleyCometSim:
     def build_solar_system(self):
         # region 构建太阳系
         self.sun = Sun(size_scale=0.8e2, show_trail=False)
-        self.earth = Earth(size_scale=8e3, distance_scale=1, rotate_angle=0, show_trail=False)
-        self.mercury = Mercury(size_scale=4e3, distance_scale=1, show_trail=False)
-        self.venus = Venus(size_scale=4e3, distance_scale=1, show_trail=False)
-        self.mars = Mars(size_scale=4e3, distance_scale=1, show_trail=False)
-        self.jupiter = Jupiter(size_scale=1.68e3, distance_scale=1, show_trail=False)
-        self.saturn = Saturn(size_scale=1.68e3, distance_scale=1, show_trail=False)
-        self.uranus = Uranus(size_scale=3.5e3, distance_scale=1, show_trail=False)
-        self.neptune = Neptune(size_scale=3.5e3, distance_scale=1, show_trail=False)
-        self.pluto = Pluto(size_scale=1.5e5, distance_scale=1, show_trail=False)
+        self.earth = Earth(size_scale=8e3, rotate_angle=0, show_trail=False)
+        self.mercury = Mercury(size_scale=4e3, show_trail=False)
+        self.venus = Venus(size_scale=4e3, show_trail=False)
+        self.mars = Mars(size_scale=4e3, show_trail=False)
+        self.jupiter = Jupiter(size_scale=1.68e3, show_trail=False)
+        self.saturn = Saturn(size_scale=1.68e3, show_trail=False)
+        self.uranus = Uranus(size_scale=3.5e3, show_trail=False)
+        self.neptune = Neptune(size_scale=3.5e3, show_trail=False)
+        self.pluto = Pluto(size_scale=1.5e5, show_trail=False)
         self.bodies = [
             self.sun,  # 太阳
             self.mercury,  # 水星
@@ -102,9 +102,6 @@ class HalleyCometSim:
             orbit_line = create_orbit_line(self.sun, body)
             orbit_line.body = body
             self.orbit_lines.append(orbit_line)
-            # orbit_line.parent = scene
-            # self.earth_orbit = create_orbit_line(self.sun, self.earth)
-            # self.pluto_orbit = create_orbit_line(self.sun, self.pluto, alpha=1)
 
         self.text_panel = create_text_panel()
 
@@ -125,17 +122,18 @@ class HalleyCometSim:
 
         for i, orbit_line in enumerate(self.orbit_lines):
             if i < 4:
+                # 近日的天体绕行非常快，不调整轨道大小
                 continue
             body = orbit_line.body
+            # 由于天体运行不是标准的圆形，则需要动态调整轨道的大小，保证轨道线始终在天体的中心位置
             distance = calculate_distance(self.sun.position - body.position)
-            scale_rate = distance * UrsinaConfig.SCALE_FACTOR * 0.695 / orbit_line.radius
+            scale_rate = distance * UrsinaConfig.SCALE_FACTOR / orbit_line.radius
             orbit_line.scale = scale_rate
 
 
-
 if __name__ == '__main__':
     """
-    三体二向箔场景模拟
+    哈雷彗星场景模拟
     """
     sim = HalleyCometSim()
     sim.build()

simulators/ursina/entities/circle_line.py

@@ -26,7 +26,7 @@ class CircleLine(Entity):
 
     def create_circle_line(self):
         angle_step = 360 / self.segments
-        r = self.radius * 1.4363
+        r = self.radius  # * 1.4363
         for i in range(self.segments):
             angle = math.radians(i * angle_step)
             next_angle = math.radians((i + 1) * angle_step)

simulators/ursina/ursina_mesh.py

@@ -212,7 +212,7 @@ def create_orbit_line(center_obj, orbiting_obj, thickness=5, line_color=None, al
     distance1 = (center_obj.planet.position - orbiting_obj.planet.position).length()
     # distance = calculate_distance(center_obj.position - orbiting_obj.position)
     # distance2 = distance * UrsinaConfig.SCALE_FACTOR * 0.695 # / center_obj.planet.scale_x # * 0.0125
-    orbit_line = create_circle_line(parent=None, radius=distance1 * 0.695,  position=center_obj.planet.position,
+    orbit_line = create_circle_line(parent=None, radius=distance1,  position=center_obj.planet.position,
                                     thickness=thickness, color=line_color,
                                     alpha=alpha)
     orbit_line.rotation_x = 90