Struct Quadric 

pub struct Quadric {
    pub q: [f64; 10],
}

A symmetric 4×4 quadric error matrix stored in compact upper-triangle form. Indices: Q[0]=q00, Q[1]=q01, Q[2]=q02, Q[3]=q03, Q[4]=q11, Q[5]=q12, Q[6]=q13, Q[7]=q22, Q[8]=q23, Q[9]=q33.

Fields

q: [f64; 10]

Upper-triangle elements of the 4×4 symmetric matrix.

Implementations

impl Quadric

pub fn zero() -> Self

Create a zero quadric.

pub fn add(&self, other: &Quadric) -> Quadric

Add another quadric to this one.

pub fn from_plane(a: f64, b: f64, c: f64, d: f64) -> Quadric

Build a fundamental error quadric for the plane (a,b,c,d) where ax + by + cz + d = 0 and (a,b,c) is the unit normal.

pub fn evaluate(&self, v: [f64; 3]) -> f64

Evaluate Q(v) = vᵀQv (cost of placing a vertex at v).

Trait Implementations

impl Clone for Quadric

fn clone(&self) -> Quadric

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Quadric

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

Formats the value using the given formatter.

impl Default for Quadric

fn default() -> Quadric

Returns the “default value” for a type.

impl Copy for Quadric