Struct gemini_engine::elements::geometry::Polygon

pub struct Polygon {
    pub points: Vec<Vec2D>,
    pub fill_char: ColChar,
}

The Polygon takes a vec of Vec2Ds and returns a polygon with those vertices when blit to a View

Fields

points: Vec<Vec2D>

The points that make up the polygon

fill_char: ColChar

The ColChar used to fill the polygon

Implementations

impl Polygon

pub const fn new(points: Vec<Vec2D>, fill_char: ColChar) -> Self

Create a new polygon

pub fn triangulate(vertices: &[Vec2D]) -> Vec<[Vec2D; 3]>

Split a polygon up into triangles using the ear cutting algorithm. Returns a vec of coordinate sets for each triangle

pub fn draw(vertices: &[Vec2D]) -> Vec<Vec2D>

Draw a polygon from points. Supports convex and concave polygons

Trait Implementations

impl ViewElement for Polygon

fn active_pixels(&self) -> Vec<Pixel>

Return a vector of the element’s Pixels - A ColChar. If your whole object is a solid colour, consider using utils::points_to_pixels() which will add the same ColChar to every point and can then be used as this function’s output

fn active_points(&self) -> Vec<Vec2D>

Return the positions the ViewElement occupies, essentially active_pixels() without the ColChars. This has a default setting that extracts the Vec2Ds from active_pixels but you can set it to something else to make it faster