Struct rten_imageproc::Painter

pub struct Painter<'a, T> { /* private fields */ }

Painter is a context for drawing into an image tensor.

Painter uses a mutable tensor with [channel, height, width] dimensions as the drawing surface. It has a current drawing state with properties such as stroke color and width and allows states to be saved to and restored from a stack.

Drawing currently operates in the first 3 channels of the surface, which are assumed to represent red, green and blue colors.

Implementations

impl<'a, T: Copy + Default> Painter<'a, T>

pub fn new(surface: NdTensorViewMut<'a, T, 3>) -> Painter<'a, T>

Create a Painter which draws into the CHW tensor surface.

pub fn save(&mut self)

Save the current drawing style on a stack.

pub fn restore(&mut self)

Pop and apply a drawing style from the stack created with Painter::save.

pub fn with_save<F: Fn(&mut Self)>(&mut self, f: F)

Save the current drawing style, run f(self) and then restore the saved style.

This avoids the need to manually save and restore state with Painter::save and Painter::restore.

pub fn set_stroke(&mut self, stroke: Rgb<T>)

Set the RGB color values used by the draw_* methods.

pub fn set_stroke_width(&mut self, width: u32)

pub fn draw_polygon(&mut self, points: &[Point])

Draw a polygon into the surface.