//! Coordinate space marker types.
//!
//! These are zero-sized types (ZSTs) used as type parameters to distinguish
//! between different coordinate systems at compile time.
use fmt;
/// Marker type for pixel coordinates (absolute values).
///
/// Pixel coordinates are integers or floats representing absolute positions
/// within an image, where (0, 0) is typically the top-left corner.
/// Marker type for normalized coordinates (0.0 to 1.0).
///
/// Normalized coordinates represent positions as fractions of the image
/// dimensions, making them resolution-independent.