Skip to main content

QuadricMatrix

oxiphysics_geometry::decimation::types

Struct QuadricMatrix 

Source 
pub struct QuadricMatrix {
    pub q: [[f64; 4]; 4],
}
Expand description

4×4 symmetric quadric matrix used for QEM mesh simplification.

Fields§

§q: [[f64; 4]; 4]

Row-major 4×4 matrix entries.

Implementations§

Source§

impl QuadricMatrix

Source

pub fn zero() -> Self

Zero matrix.

Source

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

Fundamental error quadric Kp = pp^T for a plane ax + by + cz + d = 0. The plane coefficients must satisfy a² + b² + c² = 1 (unit normal).

Source

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

Element-wise sum of two quadrics.

Source

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

Vertex error v^T Q v in homogeneous coordinates [x, y, z, 1].

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

Source§

fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
Source§

fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
Source§

fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
Source§

fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.