3D Cameras with sweep and animation

addons/tattomoosa.vision_cone_3d/src/ConeShape3D.gd

@@ -0,0 +1,50 @@
+@tool
+class_name ConeShape3D
+extends ConvexPolygonShape3D
+
+## The height of the cone
+@export var height : float = 2.0:
+	set(value):
+		height = value
+		_request_resize()
+## The radius of the bottom of the cone
+@export var radius : float = 0.5:
+	set(value):
+		radius = value
+		_request_resize()
+## The number of radial segments of the cone
+@export var resolution : int = 8:
+	set(value):
+		resolution = value
+		_request_resize()
+
+# Resize requested
+var pending_resize := false
+
+# Update size to initial state
+func _init() -> void:
+	_request_resize()
+
+# Will only resize once per frame, during idle time
+func _request_resize() -> void:
+	if !pending_resize:
+		_update_size.call_deferred()
+		pending_resize = true
+
+# Updates shape size
+func _update_size() -> void:
+	points = _make_cone_polygon_points()
+	pending_resize = false
+
+# Makes a cone polygon
+@warning_ignore("return_value_discarded")
+func _make_cone_polygon_points() -> PackedVector3Array:
+	var pts : PackedVector3Array = []
+	var top : Vector3 = Vector3(0, height / 2, 0)
+	for i in resolution:
+		var angle := float(i) * TAU / resolution
+		var x := cos(angle) * radius
+		var y := sin(angle) * radius
+		pts.push_back(Vector3(x, -height/2, y))
+	pts.push_back(top)
+	return pts