matrix can handle any type for input

features/src/lib.rs

@@ -8,6 +8,13 @@ pub mod canvas;
 pub mod matrix;
 pub mod transformations;
 
+#[macro_export]
+macro_rules! num_traits_cast {
+    ($tt:expr) => {
+        num_traits::cast($tt).unwrap()
+    };
+}
+
 #[cfg(test)]
 mod tests {
     #[test]