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use math::relative_source_rectangle;
use types::SourceRectangle;
/// Should be implemented by contexts that
/// have source rectangle information.
pub trait SourceRectangled {
/// Adds a source rectangle.
fn src_rect(self, x: i32, y: i32, w: i32, h: i32) -> Self;
/// Moves to a relative source rectangle using
/// the current source rectangle as tile.
fn src_rel(self, x: i32, y: i32) -> Self;
/// Flips the source rectangle horizontally.
fn src_flip_h(self) -> Self;
/// Flips the source rectangle vertically.
fn src_flip_v(self) -> Self;
/// Flips the source rectangle horizontally and vertically.
fn src_flip_hv(self) -> Self;
}
impl SourceRectangled for SourceRectangle {
#[inline(always)]
fn src_rect(self, x: i32, y: i32, w: i32, h: i32) -> Self {
[x, y, w, h]
}
#[inline(always)]
fn src_rel(self, x: i32, y: i32) -> Self {
relative_source_rectangle(self, x, y)
}
#[inline(always)]
fn src_flip_h(self) -> Self {
[
self[0] + self[2],
self[1],
-self[2],
self[3]
]
}
#[inline(always)]
fn src_flip_v(self) -> Self {
[
self[0],
self[1] + self[3],
self[2],
-self[3]
]
}
#[inline(always)]
fn src_flip_hv(self) -> Self {
[
self[0] + self[2],
self[1] + self[3],
-self[2],
-self[3]
]
}
}