Struct valora::canvas::Canvas

pub struct Canvas { /* fields omitted */ }

A painting surface.

Methods

impl Canvas

pub fn paint(&mut self, element: impl Paint)

Paints an element.

pub fn set_color(&mut self, color: impl IntoColor)

Sets the current color.

pub fn set_color_alpha(&mut self, color: impl IntoColor, alpha: f32)

Sets the current color.

pub fn move_to(&mut self, dest: P2)

Stats a new path at the given point.

pub fn line_to(&mut self, dest: P2)

Adds a line to the current path which ends at the given point.

pub fn quadratic_to(&mut self, ctrl: P2, end: P2)

Adds a quadratic bezier curve to the current path with the given control and end points.

pub fn cubic_to(&mut self, ctrl0: P2, ctrl1: P2, end: P2)

Adds a cubic bezier curve to the current path with the given control and end points.

pub fn arc(&mut self, center: P2, radii: V2, sweep: Angle, phase: Angle)

Adds an arc segment to the path.

pub fn close_path(&mut self)

Closes the current path.

pub fn set_stroke_width(&mut self, stroke_width: f32)

Sets the width of lines drawn with the stroke().

pub fn fill(&mut self)

Paints the current path by filling the region inside the path.

pub fn stroke(&mut self)

Paints the current path by stroking the path.

pub fn set_shader(&mut self, shader: Shader)

Sets the current shader used to shade rastered paths.

Changing shaders requires making a new draw call to the GPU and tearing down some state. Changing shaders 0-10 times per frame is likely to be fast enough. Changing shaders 500 times per frame will be slow.

Trait Implementations

impl IntoIterator for Canvas

type Item = Element

The type of the elements being iterated over.

type IntoIter = IntoIter<Self::Item>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.