<div id="diagram"></div>
<script>
var diagram = kendo.dataviz.diagram;
var initialRect = new diagram.Rect(0, 0, 200, 150);
var layout = new diagram.Layout(initialRect, {
    orientation: "horizontal"
});

// Get current rectangle
var currentRect = layout.rect();
console.log("Current rectangle:", currentRect);

// Set new rectangle
var newRect = new diagram.Rect(50, 50, 300, 250);
layout.rect(newRect);
console.log("Updated rectangle:", layout.rect());
</script>