Galactica/crates/render/src/anchoredposition.rs

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2024-01-08 17:57:49 -08:00
/// The location of a UI element, in one of a few
/// possible coordinate systems.
///
/// Positive Y always points up,
/// positive X always points right.
#[derive(Debug, Clone)]
pub enum PositionAnchor {
/// Position of this sprite's center,
/// relative to the nw corner of the window.
NwC,
/// Position of this sprite's nw corner,
/// relative to the nw corner of the window.
NwNw,
/// Position of this sprite's ne corner,
/// relative to the nw corner of the window.
NwNe,
/// Position of this sprite's sw corner,
/// relative to the nw corner of the window.
NwSw,
/// Position of this sprite's se corner,
/// relative to the nw corner of the window.
NwSe,
/// Position of this sprite's ne corner,
/// relative to the ne corner of the window.
NeNe,
}
// These offsets are implemented in wgsl shaders.
impl PositionAnchor {
/// Get the uint that represents this anchor mode in shaders
pub fn to_int(&self) -> u32 {
match self {
Self::NwC => 0,
Self::NwNw => 1,
Self::NwNe => 2,
Self::NwSw => 3,
Self::NwSe => 4,
Self::NeNe => 5,
}
}
}