reorganized code into separate files

geometries/@rectangularPrism/distance.m

@@ -0,0 +1,32 @@
+function d = distance(obj, pos)
+    arguments (Input)
+        obj (1, 1) {mustBeA(obj, 'rectangularPrism')};
+        pos (:, 3) double;
+    end
+    arguments (Output)
+        d (:, 1) double
+    end
+    if obj.contains(pos)
+        % Queried point is inside geometry
+        % find minimum distance to any face
+        d = min([pos(1) - obj.minCorner(1), ...
+                 pos(2) - obj.minCorner(2), ...
+                 pos(3) - obj.minCorner(3), ...
+                 obj.maxCorner(1) - pos(1), ...
+                 obj.maxCorner(2) - pos(2), ...
+                 obj.maxCorner(3) - pos(3)]);
+    else
+        % Queried point is outside geometry
+        cPos = NaN(1, 3);
+        for ii = 1:3
+            if pos(ii) < obj.minCorner(ii)
+                cPos(ii) = obj.minCorner(ii);
+            elseif pos(ii) > obj.maxCorner(ii)
+                cPos(ii) = obj.maxCorner(ii);
+            else
+                cPos(ii) = pos(ii);
+            end
+        end
+        d = norm(cPos - pos);
+    end
+end