ヨヨコと郁代回転，視野角拡大

main.py

@@ -25,6 +25,14 @@ from youtube import *
 
 
 class Main:
+    kita_x: float = CWindow.WIDTH / 2
+    kita_y: float = 1000000.
+    kita_arg: float = 0.
+
+    jojoko_x: float = CWindow.WIDTH / 2
+    jojoko_y: float = 1000000.
+    jojoko_arg: float = 0.
+
     @classmethod
     def main (
             cls,
@@ -331,7 +339,7 @@ class Main:
             bg_evening:         pygame.Surface,
             bg_night:           pygame.Surface,
             bg_grass:           pygame.Surface,
-            kita:               pygame.Surface,
+            kita_original:      pygame.Surface,
             jojoko_original:    pygame.Surface,
             sunrise_start:      datetime,
             sunrise_end:        datetime,
@@ -349,7 +357,19 @@ class Main:
                 sunset_start + (sunset_end - sunset_start) / 2)
 
         jojoko: pygame.Surface = cls.get_jojoko (jojoko_original,
-                                                 moon_days_old, moon_alt)
+                                                 moon_days_old, moon_alt, moon_az)
+
+        x = CWindow.WIDTH * (sun_az - 80) / 120
+        y = ((CWindow.HEIGHT / 2)
+             - (CWindow.HEIGHT / 2 + 100) * math.sin (math.radians (sun_alt)) / math.sin ( math.radians (60)))
+        arg = math.degrees (math.atan2 (y - cls.kita_y, x - cls.kita_x))
+
+        cls.kita_x = x
+        cls.kita_y = y
+        if abs (arg - cls.kita_arg) > 3:
+            cls.kita_arg = arg
+
+        kita: pygame.Surface = pygame.transform.rotate (kita_original, -(90 + cls.kita_arg))
 
         dt: datetime = datetime.now ()
 
@@ -374,27 +394,25 @@ class Main:
 
         screen.blit (bg_evening, (0, 0))
 
-        if (moon_az < 180) and (-10 <= moon_alt < 40):
-            y = ((CWindow.HEIGHT / 2 + 100)
-                 - (CWindow.HEIGHT / 2 + 200) / 30 * moon_alt)
-            screen.blit (jojoko, jojoko.get_rect (center = (400, y)))
+        if (moon_az < 220) and (-10 <= moon_alt):
+            screen.blit (jojoko, jojoko.get_rect (center = (cls.jojoko_x, cls.jojoko_y)))
 
             screen.blit (bg_grass, (0, 0))
 
-        if (sun_az < 180) and (-10 <= sun_alt < 40):
-            y = ((CWindow.HEIGHT / 2 + 100)
-                 - (CWindow.HEIGHT / 2 + 200) / 30 * sun_alt)
-            screen.blit (kita, kita.get_rect (center = (400, y)))
+        if (sun_az < 220) and (-10 <= sun_alt):
+            screen.blit (kita, kita.get_rect (center = (cls.kita_x, cls.kita_y)))
 
             screen.blit (bg_grass, (0, 0))
 
-    @staticmethod
+    @classmethod
     def get_jojoko (
+            cls,
             jojoko_original:    pygame.Surface,
             moon_days_old:      float,
-            moon_alt:           float) \
+            moon_alt:           float,
+            moon_az:            float) \
     -> pygame.Surface:
-        jojoko: pygame.Surface = pygame.transform.rotate (jojoko_original, -moon_alt)
+        jojoko: pygame.Surface = jojoko_original.copy ()
 
         jojoko.set_colorkey ((0, 255, 0))
 
@@ -408,7 +426,17 @@ class Main:
             else:
                 jojoko.fill ((0, 255, 0))
 
-        return jojoko
+        x = CWindow.WIDTH * (moon_az - 80) / 120
+        y = ((CWindow.HEIGHT / 2)
+             - (CWindow.HEIGHT / 2 + 100) * math.sin (math.radians (moon_alt)) / math.sin (math.radians (60)))
+        arg = math.degrees (math.atan2 (y - cls.jojoko_y, x - cls.jojoko_x))
+
+        cls.jojoko_x = x
+        cls.jojoko_y = y
+        if abs (arg - cls.jojoko_arg) > 3:
+            cls.jojoko_arg = arg
+
+        return pygame.transform.rotate (jojoko, -(90 + cls.jojoko_arg))
 
 
 if __name__ == '__main__':