太阳系三体模拟器

scenes/func.py

@@ -64,6 +64,7 @@ def ursina_run(bodies,
                show_grid=True,
                show_trail=False,
                show_name=False,
+               view_closely=False,
                save_as_json=None):
     """
 
@@ -144,7 +145,9 @@ def ursina_run(bodies,
     sys.modules["__main__"].update = callback_update
     if show_trail:
         UrsinaConfig.show_trail = show_trail
-    simulator.run(dt, light=light, cosmic_bg=cosmic_bg, show_grid=show_grid, bg_music=bg_music)
+    simulator.run(dt, light=light, cosmic_bg=cosmic_bg,
+                  show_grid=show_grid, bg_music=bg_music,
+                  view_closely=view_closely)
 
 
 def mpl_run(bodies, dt=SECONDS_PER_WEEK, gif_file_name=None, gif_max_frame=200):

scenes/mercury_high_resolution.py

@@ -22,4 +22,6 @@ if __name__ == '__main__':
     # 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_DAY, position=(0, 30000, -600000), cosmic_bg="../textures/cosmic1.jpg")
+    ursina_run(bodies, SECONDS_PER_DAY, position=(0, 30000, -600000),
+               cosmic_bg="../textures/cosmic1.jpg",
+               view_closely=True)

simulators/ursina_simulator.py

@@ -163,7 +163,11 @@ class UrsinaSimulator(Simulator):
         """
         # Add skybox
         from ursina import Sky
-        Sky(texture=texture).scale = 10000
+        sky_scale = 50000
+        Sky(texture=texture).scale = sky_scale
+        # 一定要够大，如果小于 Sky(texture=texture).scale = 50000，宇宙背景就会出现黑色方洞
+        if camera.clip_plane_far < sky_scale * 2:
+            camera.clip_plane_far = sky_scale * 2
 
         # texture = load_texture(texture)
         # sky_dome = Entity(model='sky_dome', texture=texture, scale=10000,
@@ -231,7 +235,14 @@ class UrsinaSimulator(Simulator):
     def run(self, dt, **kwargs):
 
         window.title = '宇宙模拟器'
+        view_closely = False
+        if "view_closely" in kwargs:
+            view_closely = kwargs["view_closely"]
 
+        if view_closely:
+            # 设置 camera 的裁剪面和位置
+            camera.clip_plane_near = 0.01
+            camera.fov = 60
         # 设置 camera 的裁剪面和位置
         # camera.clip_plane_near = 0.01
         # camera.fov = 120