[Camera3D] is a special node that displays what is visible from its current location. Cameras register themselves in the nearest [Viewport] node (when ascending the tree). Only one camera can be active per viewport. If no viewport is available ascending the tree, the camera will register in the global viewport. In other words, a camera just provides 3D display capabilities to a [Viewport], and, without one, a scene registered in that [Viewport] (or higher viewports) can't be displayed.
If this is the current camera, remove it from being current. If [code]enable_next[/code] is [code]true[/code], request to make the next camera current, if any.
Returns the transform of the camera plus the vertical ([member v_offset]) and horizontal ([member h_offset]) offsets; and any other adjustments made to the position and orientation of the camera by subclassed cameras such as [XRCamera3D].
Returns the camera's frustum planes in world space units as an array of [Plane]s in the following order: near, far, left, top, right, bottom. Not to be confused with [member frustum_offset].
Returns the RID of a pyramid shape encompassing the camera's view frustum, ignoring the camera's near plane. The tip of the pyramid represents the position of the camera.
Returns [code]true[/code] if the given position is behind the camera (the blue part of the linked diagram). [url=https://raw.githubusercontent.com/godotengine/godot-docs/master/img/camera3d_position_frustum.png]See this diagram[/url] for an overview of position query methods.
Returns [code]true[/code] if the given position is inside the camera's frustum (the green part of the linked diagram). [url=https://raw.githubusercontent.com/godotengine/godot-docs/master/img/camera3d_position_frustum.png]See this diagram[/url] for an overview of position query methods.
Makes this camera the current camera for the [Viewport] (see class description). If the camera node is outside the scene tree, it will attempt to become current once it's added.
Returns a normal vector from the screen point location directed along the camera. Orthogonal cameras are normalized. Perspective cameras account for perspective, screen width/height, etc.
Returns the 3D point in world space that maps to the given 2D coordinate in the [Viewport] rectangle on a plane that is the given [code]z_depth[/code] distance into the scene away from the camera.
Returns a normal vector in world space, that is the result of projecting a point on the [Viewport] rectangle by the inverse camera projection. This is useful for casting rays in the form of (origin, normal) for object intersection or picking.
Returns a 3D position in world space, that is the result of projecting a point on the [Viewport] rectangle by the inverse camera projection. This is useful for casting rays in the form of (origin, normal) for object intersection or picking.
Sets the camera projection to frustum mode (see [constant PROJECTION_FRUSTUM]), by specifying a [code]size[/code], an [code]offset[/code], and the [code]z_near[/code] and [code]z_far[/code] clip planes in world space units. See also [member frustum_offset].
Sets the camera projection to orthogonal mode (see [constant PROJECTION_ORTHOGONAL]), by specifying a [code]size[/code], and the [code]z_near[/code] and [code]z_far[/code] clip planes in world space units. (As a hint, 2D games often use this projection, with values specified in pixels.)
Sets the camera projection to perspective mode (see [constant PROJECTION_PERSPECTIVE]), by specifying a [code]fov[/code] (field of view) angle in degrees, and the [code]z_near[/code] and [code]z_far[/code] clip planes in world space units.
[b]Note:[/b] When using this to position GUI elements over a 3D viewport, use [method is_position_behind] to prevent them from appearing if the 3D point is behind the camera:
[codeblock]
# This code block is part of a script that inherits from Node3D.
# `control` is a reference to a node inheriting from Control.
If multiple cameras are in the scene, one will always be made current. For example, if two [Camera3D] nodes are present in the scene and only one is current, setting one camera's [member current] to [code]false[/code] will cause the other camera to be made current.
If not [constant DOPPLER_TRACKING_DISABLED], this camera will simulate the [url=https://en.wikipedia.org/wiki/Doppler_effect]Doppler effect[/url] for objects changed in particular [code]_process[/code] methods. See [enum DopplerTracking] for possible values.
The camera's field of view angle (in degrees). Only applicable in perspective mode. Since [member keep_aspect] locks one axis, [code]fov[/code] sets the other axis' field of view angle.
The camera's frustum offset. This can be changed from the default to create "tilted frustum" effects such as [url=https://zdoom.org/wiki/Y-shearing]Y-shearing[/url].
The camera's projection mode. In [constant PROJECTION_PERSPECTIVE] mode, objects' Z distance from the camera's local space scales their perceived size.
The camera's size measured as 1/2 the width or height. Only applicable in orthogonal and frustum modes. Since [member keep_aspect] locks on axis, [code]size[/code] sets the other axis' size length.
Preserves the horizontal aspect ratio; also known as Vert- scaling. This is usually the best option for projects running in portrait mode, as taller aspect ratios will benefit from a wider vertical FOV.
Preserves the vertical aspect ratio; also known as Hor+ scaling. This is usually the best option for projects running in landscape mode, as wider aspect ratios will automatically benefit from a wider horizontal FOV.
Simulate [url=https://en.wikipedia.org/wiki/Doppler_effect]Doppler effect[/url] by tracking positions of objects that are changed in [code]_process[/code]. Changes in the relative velocity of this camera compared to those objects affect how audio is perceived (changing the audio's [member AudioStreamPlayer3D.pitch_scale]).
Simulate [url=https://en.wikipedia.org/wiki/Doppler_effect]Doppler effect[/url] by tracking positions of objects that are changed in [code]_physics_process[/code]. Changes in the relative velocity of this camera compared to those objects affect how audio is perceived (changing the audio's [member AudioStreamPlayer3D.pitch_scale]).
