wip

fixed_wide_vectors/src/macros/fixed_wide.rs

@@ -84,6 +84,60 @@ macro_rules! impl_wide_vector_operations {
 }
 
 
+// Notes:
+// Mat3<Vec2>.dot(Vec2) -> Vec3
+// Mat3<Vec4>.dot(Mat4<Vec2>) -> Mat3<Vec2>
+// mat.mat can be implemented off the back of mat.vec
+
+#[doc(hidden)]
+#[macro_export(local_inner_macros)]
+macro_rules! impl_wide_matrix_mul {
+	(
+		//TODO: Fixed point impls
+		$lhs: expr, $rhs: expr,
+		($struct_outer: ident { $($field_outer: ident), + }, $vector_outer: ident { $($vector_field_outer: ident), + }, $size_outer: expr),
+		($struct_inner: ident { $($field_inner: ident), + }, $matrix_inner: ident { $($matrix_field_inner: ident), + }, $size_inner: expr),
+		($rhs_struct_inner: ident { $($rhs_field_inner: ident), + }, $rhs_matrix_inner: ident { $($rhs_matrix_field_inner: ident), + }, $rhs_size_inner: expr)
+	) => {
+		impl<T,U> fixed_wide_traits::wide::WideDot<$matrix_inner<$rhs_struct_inner<U>>> for $struct_outer<$struct_inner<T>>
+			where
+				$struct_inner<T>:fixed_wide_traits::wide::WideDot<$rhs_struct_inner<U>>,
+		{
+			type Output=$struct_outer<<$struct_inner<T> as fixed_wide_traits::wide::WideDot<$rhs_struct_inner<U>>::Output>;
+			#[inline]
+			fn wide_dot(self,rhs:$matrix_inner<$rhs_struct_inner<U>>)->Self::Output{
+				//just made this up, don't trust it
+				let tr=rhs.transpose();
+				//TODO: use a macro expansion instead of transpose and map
+				self.map(|axis|
+					tr.map(|trax|
+						axis.wide_dot(trax)
+					).to_vector()
+				)
+			}
+		}
+	}
+}
+#[doc(hidden)]
+#[macro_export(local_inner_macros)]
+macro_rules! impl_wide_matrix_operations {
+	(
+		($struct_outer: ident { $($field_outer: ident), + }, $vector_outer: ident { $($vector_field_outer: ident), + }, $size_outer: expr),
+		($struct_inner: ident { $($field_inner: ident), + }, $matrix_inner: ident { $($matrix_field_inner: ident), + }, $size_inner: expr)
+	) => {
+		/* TODO: nasty determinant macro
+		impl<U:std::ops::Add<Output=U>,T:Copy+fixed_wide_traits::wide::WideMul<Output=U>> $struct<T> {
+			#[inline]
+			pub fn wide_det(&self) -> U {
+				$crate::sum_repeating!(
+					$( + self.$field.wide_mul(self.$field) ) +
+				)
+			}
+		}
+		*/
+	};
+}
+
 // HACK: Allows us to sum repeating tokens in macros.
 // See: https://stackoverflow.com/a/60187870/17452730
 #[doc(hidden)]