GoJS resize every element of diagram

Question

My diagram has elements of fixed size. For example I have couple elements with different sizes: First is 250x200px, second 307x501px etc.

There are lot of panels, shapes etc.

Is there any way to resize/rescale every element on current diagram?

For example I want to double every element size so I would like just multiply it by 2.

diagram.scale = diagram.scale * 2; //resize elements like 250px X 200px to 500px X 400px

I've read about scale and resizing from documentation but scale does not seem work.

I am not attaching any code because it is generic question.

Answer 1

I would think that would work (to double the Diagram's scale) but that isn't exactly resizing elements.

You can programatically go over all nodes:

myDiagram.startTransaction();
myDiagram.nodes.each(function(node) {
  node.scale = node.scale * 2;
});
myDiagram.commitTransaction();

Or else resize them by setting their width and height, or setting the width and height of some element inside the node.

Maybe related depending on what you are trying to do: This tool extension demonstrates how to modify the ResizingTool to work with multiple selection: https://gojs.net/latest/extensions/ResizeMultiple.html