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//! Primitive widgets are special in that they are built into conrod's `render`ing logic.
//!
//! By providing a set of foundational graphics widgets, we avoid the need for other widgets to
//! define their own methods for rendering. Instead, conrod graphics backends only need to define
//! rendering methods for a small set of primitives.

pub mod image;
pub mod line;
pub mod point_path;
pub mod shape;
pub mod text;

use {Point, Range, Rect};

/// Find the bounding rect for the given series of points.
pub fn bounding_box_for_points<I>(mut points: I) -> Rect
where
    I: Iterator<Item = Point>,
{
    points
        .next()
        .map(|first| {
            let start_rect = Rect {
                x: Range {
                    start: first[0],
                    end: first[0],
                },
                y: Range {
                    start: first[1],
                    end: first[1],
                },
            };
            points.fold(start_rect, Rect::stretch_to_point)
        })
        .unwrap_or_else(|| Rect::from_xy_dim([0.0, 0.0], [0.0, 0.0]))
}