Struct widgetry::tools::lasso::Lasso

pub struct Lasso {
    points: Vec<Pt2D>,
    polygon: Option<Polygon>,
    threshold: Distance,
}

Draw freehand polygons

Fields

points: Vec<Pt2D>

polygon: Option<Polygon>

threshold: Distance

Implementations

impl Lasso

pub fn new(threshold: Distance) -> Self

How far do points need to be spaced apart to add?

pub fn event(&mut self, ctx: &mut EventCtx<'_>) -> Option<Polygon>

When this returns a polygon, the interaction is finished

pub fn draw(&self, g: &mut GfxCtx<'_>)