Struct cogl::MatrixEntry

pub struct MatrixEntry(_);

Implementations

impl MatrixEntry

pub fn calculate_translation(
    &self,
    entry1: &MatrixEntry
) -> (Bool, f32, f32, f32)

Determines if the only difference between two transforms is a translation and if so returns what the x, y, and z components of the translation are.

If the difference between the two translations involves anything other than a translation then the function returns false.

entry1

A second reference transform

x

The destination for the x-component of the translation

y

The destination for the y-component of the translation

z

The destination for the z-component of the translation

Returns

true if the only difference between the transform of self and the transform of entry1 is a translation, otherwise false.

pub fn is_identity(&self) -> Bool

Determines whether self is known to represent an identity transform.

If this returns true then the entry is definitely the identity matrix. If it returns false it may or may not be the identity matrix but no expensive comparison is performed to verify it.

Returns

true if self is definitely an identity transform, otherwise false.

Trait Implementations

impl Clone for MatrixEntry

fn clone(&self) -> MatrixEntry

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MatrixEntry

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

Formats the value using the given formatter.

impl Hash for MatrixEntry

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl StaticType for MatrixEntry

fn static_type() -> Type

Returns the type identifier of Self.