Struct Radial 

pub struct Radial {
    pub start: Point,
    pub start_radius: f32,
    pub end: Point,
    pub end_radius: f32,
    pub t_min: f32,
    pub t_max: f32,
    pub extend_start: bool,
    pub extend_end: bool,
}

A type 3 shading’s geometry.

Fields

start: Point

The first circle’s centre.

start_radius: f32

The first circle’s radius.

end: Point

The second circle’s centre.

end_radius: f32

The second circle’s radius.

t_min: f32

/Domain’s low bound.

t_max: f32

/Domain’s high bound.

extend_start: bool

Whether the gradient continues past the first circle.

extend_end: bool

Whether it continues past the second.

Implementations

impl Radial

pub fn is_decreasing(&self) -> bool

Whether the circles shrink as the gradient advances, which decides which root of the quadratic to prefer.

The centre distance is truncated to an integer before the comparison, so a shading whose centres are 3.9 units apart with dr == -3.5 counts as decreasing while one with dr == -3.0 does not. Reproduced.

pub fn position(&self, p: Point) -> RadialPosition

The parametric position of a point, or that it is uncovered.

Trait Implementations

impl Clone for Radial

fn clone(&self) -> Radial

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Radial

impl Debug for Radial

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

Formats the value using the given formatter.

impl PartialEq for Radial

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Radial