stub fn origin and iter

dizzle

@@ -1 +1 @@
-Subproject commit 44b2be57ca8d1f69a95f2eb02f4b5474ec77ac0a
+Subproject commit 192a1d8257a9f2ad43ebceacb7b5ca348c601471

src/space.rs

@@ -57,11 +57,47 @@ impl<N: Coord> XYWH<N> {
 }
 
 /// Something that has `[0, 0]` at a particular point.
-pub trait HasOrigin {
+pub trait HasOrigin { fn origin (&self) -> Origin;
-    fn origin (&self) -> Origin;
 }
-impl<T: AsRef<Origin>> HasOrigin for T {
+impl<T: AsRef<Origin>> HasOrigin for T { fn origin (&self) -> Origin { *self.as_ref() } }
-    fn origin (&self) -> Origin { *self.as_ref() }
+pub struct Anchor<T>(Origin, T);
+impl<T> AsRef<Origin> for Anchor<T> {
+    fn as_ref (&self) -> &Origin {
+        &self.0
+    }
+}
+impl<T: Screen, U: Draw<T>> Draw<T> for Anchor<U> {
+    fn draw (self, to: &mut T) -> Usually<XYWH<T::Unit>> {
+        todo!()
+    }
+}
+
+pub const fn origin_nw <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::NW, a)
+}
+pub const fn origin_n <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::N, a)
+}
+pub const fn origin_ne <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::NE, a)
+}
+pub const fn origin_w <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::W, a)
+}
+pub const fn origin_c <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::C, a)
+}
+pub const fn origin_e <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::E, a)
+}
+pub const fn origin_sw <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::SW, a)
+}
+pub const fn origin_s <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::S, a)
+}
+pub const fn origin_se <T: Screen> (a: impl Draw<T>) -> impl Draw<T> {
+    Anchor(Origin::SE, a)
 }
 
 /// Where is [0, 0] located?
@@ -203,21 +239,6 @@ impl Split {
             Self::Below  => (C, C),
         }
     }
-    /// Iterate over a collection of renderables:
-    ///
-    /// ```
-    /// use tengri::draw::{Origin::*, Split::*};
-    /// let _ = Below.iter([
-    ///   NW.align(W(15).max(W(10).min("Leftbar"))),
-    ///   NE.align(W(12).max(W(10).min("Rightbar"))),
-    ///   Center.align(W(40).max(H(20.max("Center"))))
-    /// ].iter(), |x|x);
-    /// ```
-    pub fn iter <T: Screen, U: Draw<T>, F: Fn(U)->dyn Draw<T>> (
-        _items: impl Iterator<Item = U>, _cb: F
-    ) -> impl Draw<T> {
-        thunk(move|_to: &mut T|{ todo!() })
-    }
 }
 
 /// Horizontal axis.
@@ -385,3 +406,77 @@ pub const fn wh_clip <T: Screen> (
 ) -> impl Draw<T> {
     thunk(move|to: &mut T|draw.draw(todo!()))
 }
+
+pub const fn wh_full <T: Screen> (a: impl Draw<T>) -> impl Draw<T> { a }
+pub const fn w_full <T: Screen> (a: impl Draw<T>) -> impl Draw<T> { a }
+pub const fn h_full <T: Screen> (a: impl Draw<T>) -> impl Draw<T> { a }
+
+#[macro_export] macro_rules! north {
+    ($($tt:tt)*) => { unimplemented!() };
+}
+#[macro_export] macro_rules! south {
+    ($($tt:tt)*) => { unimplemented!() };
+}
+#[macro_export] macro_rules! east {
+    ($($tt:tt)*) => { unimplemented!() };
+}
+#[macro_export] macro_rules! west {
+    ($($tt:tt)*) => { unimplemented!() };
+}
+#[macro_export] macro_rules! above {
+    ($($tt:tt)*) => { unimplemented!() };
+}
+#[macro_export] macro_rules! below {
+    ($($tt:tt)*) => { unimplemented!() };
+}
+
+/// Iterate over a collection of renderables:
+///
+/// ```
+/// use tengri::draw::{Origin::*, Split::*};
+/// let _ = Below.iter([
+///   NW.align(W(15).max(W(10).min("Leftbar"))),
+///   NE.align(W(12).max(W(10).min("Rightbar"))),
+///   Center.align(W(40).max(H(20.max("Center"))))
+/// ].iter(), |x|x);
+/// ```
+pub fn iter <
+    T: Screen,
+    V: Fn()->I,
+    I: Iterator<Item = dyn Draw<T>>,
+    F: Fn(&dyn Draw<T>)->dyn Draw<T>,
+> (_items: V, _cb: F) -> impl Draw<T> {
+    thunk(move|_to: &mut T|{ todo!() })
+}
+pub fn iter_north <
+    T: Screen,
+    V: Fn()->I,
+    I: Iterator<Item = dyn Draw<T>>,
+    F: Fn(&dyn Draw<T>)->dyn Draw<T>,
+> (_items: V, _cb: F) -> impl Draw<T> {
+    thunk(move|_to: &mut T|{ todo!() })
+}
+pub fn iter_east <
+    T: Screen,
+    V: Fn()->I,
+    I: Iterator<Item = dyn Draw<T>>,
+    F: Fn(&dyn Draw<T>)->dyn Draw<T>,
+> (_items: V, _cb: F) -> impl Draw<T> {
+    thunk(move|_to: &mut T|{ todo!() })
+}
+pub fn iter_south <
+    T: Screen,
+    V: Fn()->I,
+    I: Iterator<Item = dyn Draw<T>>,
+    F: Fn(&dyn Draw<T>)->dyn Draw<T>,
+> (_items: V, _cb: F) -> impl Draw<T> {
+    thunk(move|_to: &mut T|{ todo!() })
+}
+pub fn iter_west <
+    T: Screen,
+    V: Fn()->I,
+    I: Iterator<Item = dyn Draw<T>>,
+    F: Fn(&dyn Draw<T>)->dyn Draw<T>,
+> (_items: V, _cb: F) -> impl Draw<T> {
+    thunk(move|_to: &mut T|{ todo!() })
+}