Update plot_datatip.m

Author: totorotoby

src/m/plot/plot_datatip.m

@@ -1,21 +1,23 @@
-function output_txt = plot_datatip(~, event_obj, x, y, field, datatip)
-
+function output_txt = plot_datatip(~, event_obj, datatip)
+    p = event_obj.Target;
+    field = p.FaceVertexCData;
+    x = p.Vertices(:,1);
+    y = p.Vertices(:,2);
     pos = event_obj.Position;
     [~, idx] = min( (x - pos(1)).^2 + (y - pos(2)).^2 );
 
     if strcmp(datatip, 'vertex-field')
-    output_txt = {
-        ['X: ', num2str(pos(1))], ...
-        ['Y: ', num2str(pos(2))], ...
-        ['Vertex #: ', num2str(idx)], ...
-        ['Field: ', num2str(field(idx))]
-                 };
+        output_txt = {
+            ['X: ', num2str(pos(1))], ...
+            ['Y: ', num2str(pos(2))], ...
+            ['Vertex #: ', num2str(idx)], ...
+            ['Field: ', num2str(field(idx))]
+            };
     else
         output_txt = {
             ['X: ', num2str(pos(1))], ...
             ['Y: ', num2str(pos(2))], ...
             ['Value: ', num2str(datatip(idx))]
-                     };
+            };
     end
-
 end