Struct MTLCurveBasis 

#[repr(transparent)]
pub struct MTLCurveBasis(pub NSInteger);

Available on crate feature MTLAccelerationStructure only.

Basis function to use to interpolate curve control points

See also Apple’s documentation

Tuple Fields

0: NSInteger

Implementations

impl MTLCurveBasis

pub const BSpline: Self

B-Spline basis. Each curve segment must have 3 or 4 control points. Curve segments join with C^(N - 2) continuity, where N is the number of control points. The curve does not necessarily pass through the control points without additional control points at the beginning and end of the curve. Each curve segment can overlap N-1 control points.

pub const CatmullRom: Self

Catmull-Rom basis. Curves represented in this basis can also be easily converted to and from the Bézier basis. Each curve segment must have 4 control points. Each index in the control point index buffer points to the first of 4 consecutive control points in the control point buffer.

The tangent at each control point is given by (P_(i+1) - P_(i-1)) / 2. Therefore, the curve does not pass through the first and last control point of each connected sequence of curve segments. Instead, the first and last control point are used to control the tangent vector at the beginning and end of the curve.

Curve segments join with C^1 continuity and the curve passes through the control points. Each curve segment can overlap 3 control points.

pub const Linear: Self

Linear basis. The curve is made of a sequence of connected line segments each with 2 control points.

pub const Bezier: Self

Bezier basis

Trait Implementations

impl Clone for MTLCurveBasis

fn clone(&self) -> MTLCurveBasis

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MTLCurveBasis

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

Formats the value using the given formatter.

impl Encode for MTLCurveBasis

const ENCODING: Encoding = NSInteger::ENCODING

The Objective-C type-encoding for this type.

impl Hash for MTLCurveBasis

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MTLCurveBasis

fn cmp(&self, other: &MTLCurveBasis) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MTLCurveBasis

fn eq(&self, other: &MTLCurveBasis) -> 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 PartialOrd for MTLCurveBasis

fn partial_cmp(&self, other: &MTLCurveBasis) -> 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 RefEncode for MTLCurveBasis

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for MTLCurveBasis

impl Eq for MTLCurveBasis

impl StructuralPartialEq for MTLCurveBasis