Struct RadialShading 

pub struct RadialShading {
    pub name: String,
    pub start_center: Point,
    pub start_radius: f64,
    pub end_center: Point,
    pub end_radius: f64,
    pub color_stops: Vec<ColorStop>,
    pub extend_start: bool,
    pub extend_end: bool,
}

Radial shading definition

Fields

name: String

Shading name for referencing

start_center: Point

Center point of the start circle

start_radius: f64

Radius of the start circle

end_center: Point

Center point of the end circle

end_radius: f64

Radius of the end circle

color_stops: Vec<ColorStop>

Color stops along the gradient

extend_start: bool

Whether to extend beyond the start circle

extend_end: bool

Whether to extend beyond the end circle

Implementations

impl RadialShading

pub fn new( name: String, start_center: Point, start_radius: f64, end_center: Point, end_radius: f64, color_stops: Vec<ColorStop>, ) -> Self

Create a new radial shading

pub fn with_extend(self, extend_start: bool, extend_end: bool) -> Self

Set extension options

pub fn radial_gradient( name: String, center: Point, start_radius: f64, end_radius: f64, start_color: Color, end_color: Color, ) -> Self

Create a simple two-color radial gradient

pub fn to_pdf_dictionary(&self) -> Result<Dictionary>

Generate PDF shading dictionary (ISO 32000-1 §8.7.4.4, Table 79).

Emits a real /Function interpolating the color_stops and the required /ColorSpace. The function is inlined; the writer hoists it to an indirect object when emitting the page (issue #297).

pub fn validate(&self) -> Result<()>

Validate radial shading parameters

Trait Implementations

impl Clone for RadialShading

fn clone(&self) -> RadialShading

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RadialShading

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

Formats the value using the given formatter.