Function poly_points

std/src/console/graphics.rs:132–135

Returns true if the polygon has at least one non-degenerate edge.

(points: &[PixelsXY])

/// Returns true if the polygon has at least one non-degenerate edge.
fn poly_points(points: &[PixelsXY]) -> bool {
    points.windows(2).any(|ps| ps[0] != ps[1])
        || (points.len() > 2 && points.first() != points.last())
}

/// Given two points, calculates the origin and size of the rectangle they define.
fn rect_points(x1y1: PixelsXY, x2y2: PixelsXY) -> Option<(PixelsXY, SizeInPixels)> {