Struct Plane 

pub struct Plane { /* private fields */ }

A plane in Hessian normal form: ax + by + cz + d = 0.

The normal [a, b, c] is always unit-length after extraction. The sign convention is: positive distance_to_point means the query point is on the inside (visible) half-space.

Implementations

impl Plane

pub fn new(normal: [f64; 3], d: f64) -> Self

Construct a plane from a unit normal and signed distance.

The caller is responsible for ensuring the normal is unit-length; no normalisation is performed here.

pub fn normal(&self) -> [f64; 3]

The inward-facing normal of this plane.

For frustum planes extracted via the Gribb/Hartmann method, this normal points into the frustum volume. A positive distance_to_point value means the query point is on the inside (visible) side of the plane.

pub fn d(&self) -> f64

The signed distance constant d in n . p + d = 0.

pub fn distance_to_point(&self, x: f64, y: f64, z: f64) -> f64

Signed distance from a point to this plane.

• Positive: the point is inside the frustum on this plane’s side.
• Zero: the point lies exactly on the plane.
• Negative: the point is outside.

Because the normal is unit-length, the returned value is a true metric distance in the same units as the input coordinates (meters).

Trait Implementations

impl Clone for Plane

fn clone(&self) -> Plane

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Plane

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

Formats the value using the given formatter.

impl PartialEq for Plane

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Plane

impl StructuralPartialEq for Plane