geometry: move up custom `to_s` to the interfaces

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/geometry/boxes.nit b/lib/geometry/boxes.nit
index 6ecf483..314cde3 100644 (file)
--- a/lib/geometry/boxes.nit
+++ b/lib/geometry/boxes.nit
@@ -83,6 +83,8 @@ interface Boxed[N: Numeric]
        # assert b.left == 2 and b.right == 8 and b.top == 13 and b.bottom == 7
        # ~~~
        fun padded(dist: N): Box[N] do return new Box[N].lrtb(left - dist, right + dist, top + dist, bottom - dist)
+
+       redef fun to_s do return "<{class_name} left: {left}, right: {right}, top: {top}, bottom: {bottom}>"
 end
 
 # A 2d bounded object and an implementation of `Boxed`
@@ -146,8 +148,6 @@ class Box[N: Numeric]
        do
                init(left, left+width, top, top - height)
        end
-
-       redef fun to_s do return "<left: {left}, right: {right}, top: {top}, bottom: {bottom}>"
 end
 
 # An 3d abstract bounded object
@@ -195,6 +195,8 @@ interface Boxed3d[N: Numeric]
        end
 
        redef fun padded(dist): Box3d[N] do return new Box3d[N].lrtbfb(left - dist, right + dist, top + dist, bottom - dist, front + dist, back - dist)
+
+       redef fun to_s do return "<{class_name} left: {left}, right: {right}, top: {top}, bottom: {bottom}, front: {front}, back: {back}>"
 end
 
 # A 3d bounded object and an implementation of Boxed
@@ -278,8 +280,6 @@ class Box3d[N: Numeric]
                self.front = front
                self.back = front - depth
        end
-
-       redef fun to_s do return "<left: {left}, right: {right}, top: {top}, bottom: {bottom}, front: {front}, back: {back}"
 end
 
 redef class IPoint[N]
@@ -330,7 +330,7 @@ class BoxedArray[E: Boxed[Numeric]]
        private var data: Array[E] = new Array[E]
 
        redef fun add(item) do data.add(item)
-       redef fun items_overlapping(item): SimpleCollection[E]
+       redef fun items_overlapping(item)
        do
                var arr = new Array[E]
                for i in data do