Fix photostudio's distance calculation formula (#5759)

* Fix photostudio's distance calculation formula

* Adjust a constant to compensate for the formula change

* Calculate a proper value for the constant
(rounded to 1.5 from 1.539)

Author: dligr

simulation_parameters/Constants.cs

@@ -1558,7 +1558,7 @@ public static class Constants
 
     public const float PHOTO_STUDIO_CAMERA_FOV = 70;
     public const float PHOTO_STUDIO_CAMERA_HALF_ANGLE = PHOTO_STUDIO_CAMERA_FOV / 2.0f;
-    public const float PHOTO_STUDIO_CELL_RADIUS_MULTIPLIER = 0.80f;
+    public const float PHOTO_STUDIO_CELL_RADIUS_MULTIPLIER = 1.50f;
 
     public const int RESOURCE_LOAD_TARGET_MIN_FPS = 60;
     public const float RESOURCE_TIME_BUDGET_PER_FRAME = 1.0f / RESOURCE_LOAD_TARGET_MIN_FPS;

src/engine/PhotoStudio.cs

@@ -103,11 +103,9 @@ public static float CameraDistanceFromRadiusOfObject(float radius)
         if (radius <= 0)
             throw new ArgumentException("radius needs to be over 0");
 
-        // TODO: figure out if the camera FOV or FOV / 2 is the right thing to use here
-        float angle = Constants.PHOTO_STUDIO_CAMERA_FOV;
+        float angle = Constants.PHOTO_STUDIO_CAMERA_HALF_ANGLE;
 
-        // Some right angle triangle math that's hopefully right
-        return MathF.Tan(MathUtils.DEGREES_TO_RADIANS * angle) * radius;
+        return MathF.Tan(MathF.PI * 0.5f - MathUtils.DEGREES_TO_RADIANS * angle) * radius;
     }
 
     public override void _Ready()