Struct Camera3D 

pub struct Camera3D {
    pub position: Vector3D,
    pub target: Vector3D,
    pub up: Vector3D,
    pub fov: f64,
    pub near: f64,
    pub far: f64,
    /* private fields */
}

A 3D camera that defines the viewport into a 3D world using perspective or orthographic projection.

Fields

position: Vector3D

The world-space position of the camera (eye).

target: Vector3D

The point the camera is looking at (target).

up: Vector3D

The up direction for the camera.

fov: f64

The vertical field of view in radians.

near: f64

The near clipping plane distance.

far: f64

The far clipping plane distance.

Implementations

impl Camera3D

Implements 3D camera transformation and projection methods for Camera3D.

pub fn create( position: Vector3D, target: Vector3D, viewport_width: f64, viewport_height: f64, ) -> Camera3D

Creates a new 3D camera at the given position looking at the target.

Arguments

• Vector3D - The eye position.
• Vector3D - The target position to look at.
• f64 - The viewport width.
• f64 - The viewport height.

Returns

• Camera3D - The new camera.

pub fn aspect(&self) -> f64

Returns the aspect ratio (width / height).

Returns

• f64 - The aspect ratio.

pub fn forward(&self) -> Vector3D

Returns the forward direction (from position to target, normalized).

Returns

• Vector3D - The forward direction.

pub fn right(&self) -> Vector3D

Returns the right direction (cross product of forward and up).

Returns

• Vector3D - The right direction.

pub fn view_matrix(&self) -> Matrix4x4

Returns the view matrix for this camera.

Returns

• Matrix4x4 - The view matrix.

pub fn view_proj_matrix(&self) -> Matrix4x4

Returns the combined view-projection matrix.

Returns

• Matrix4x4 - The view-projection matrix.

pub fn world_to_screen(&self, world: Vector3D) -> Vector3D

Converts a 3D world-space point to screen-space (NDC) coordinates.

Arguments

• Vector3D - The world-space point.

Returns

• Vector3D - The screen-space point where x and y are in [0, 1] and z is the depth.

pub fn in_frustum(&self, world: Vector3D) -> bool

Projects a world-space point and returns whether it is within the camera frustum.

Arguments

• Vector3D - The world-space point.

Returns

• bool - True if the point is within the frustum.

pub fn translate(&mut self, offset: Vector3D)

Moves the camera position by the given offset, keeping the target offset by the same amount.

Arguments

• Vector3D - The translation offset.

pub fn zoom(&mut self, distance: f64)

Moves the camera position towards the target by the given distance.

Arguments

• f64 - The distance to zoom in (positive) or out (negative).

pub fn orbit(&mut self, yaw_delta: f64, pitch_delta: f64)

Orbits the camera around the target by the given yaw and pitch angles.

Arguments

• f64 - The yaw delta in radians (horizontal rotation).
• f64 - The pitch delta in radians (vertical rotation).

impl Camera3D

pub fn get_position(&self) -> Vector3D

pub fn set_position(&mut self, val: Vector3D) -> &mut Self

pub fn get_target(&self) -> Vector3D

pub fn set_target(&mut self, val: Vector3D) -> &mut Self

pub fn get_up(&self) -> Vector3D

pub fn set_up(&mut self, val: Vector3D) -> &mut Self

pub fn get_fov(&self) -> f64

pub fn set_fov(&mut self, val: f64) -> &mut Self

pub fn get_near(&self) -> f64

pub fn set_near(&mut self, val: f64) -> &mut Self

pub fn get_far(&self) -> f64

pub fn set_far(&mut self, val: f64) -> &mut Self

impl Camera3D

pub fn new( position: Vector3D, target: Vector3D, viewport_width: f64, viewport_height: f64, ) -> Self

Trait Implementations

impl Clone for Camera3D

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Camera3D

impl Debug for Camera3D

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Camera3D

Implements Default for Camera3D as a camera at (0, 0, 5) looking at the origin.

fn default() -> Camera3D

Constructs a default Camera3D value.

Returns

• Camera3D - A default-constructed instance with the documented initial state.

impl PartialEq for Camera3D

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for Camera3D

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Camera3D