advanced example

Content/Python/ue_workshop/camera.py

@@ -1,3 +1,5 @@
+import math
+
 import unreal
 
 
@@ -6,11 +8,17 @@ def look_at(actor, target):
         actor.get_actor_location(), unreal.Vector(*target)), False)
 
 
-def create(scene, location=(450, -550, 300), target=(0, 0, 100), focal_length=45):
+def create(scene, location=(450, -550, 300), target=(0, 0, 100), fov=43.6):
+    """Create a camera with a horizontal field of view in degrees (0 < fov < 180)."""
+    fov = float(fov)
+    if not 0 < fov < 180:
+        raise ValueError("fov must be between 0 and 180 degrees (exclusive)")
+    sensor_width = 36.0
+    focal_length = sensor_width / (2 * math.tan(math.radians(fov) / 2))
     actor = scene.spawn(unreal.CineCameraActor, "Camera", location)
     component = actor.get_cine_camera_component()
     filmback = component.get_editor_property("filmback")
-    filmback.set_editor_property("sensor_width", 36.0)
+    filmback.set_editor_property("sensor_width", sensor_width)
     filmback.set_editor_property("sensor_height", 20.25)
     component.set_editor_property("filmback", filmback)
     component.set_editor_property("current_focal_length", float(focal_length))