How to Create Polygon and Circle Shapes in Syncfusion Blazor Diagram

Syncfusion Blazor Diagram provides options to create custom shapes like polygons and circles. This guide demonstrates how to use the Shape property to create and display these shapes in a Blazor diagram.

Steps:

• Define a Polygon Shape: Configure points to create a polygon using NodeBasicShapes.Polygon.
• Define a Circle Shape: Set up a node with NodeBasicShapes.Ellipse for a circular shape.

<SfDiagramComponent @ref="@diagram" Height="500px" Nodes="@nodes" />

@code {
   SfDiagramComponent diagram;
   DiagramObjectCollection<Node> nodes = new DiagramObjectCollection<Node>();

   protected override void OnInitialized() {
       Node polygonNode = new Node() {
           ID = "polygonNode",
           OffsetX = 500,
           OffsetY = 200,
           Style = new ShapeStyle() { Fill = "#6495ED" },
           Shape = new BasicShape() {
               Type = NodeShapes.Basic,
               Points = new DiagramPoint[] {
                   new DiagramPoint() { X = 35 },
                   new DiagramPoint() { X = 65 },
                   new DiagramPoint() { X = 100, Y = 35 },
                   new DiagramPoint() { X = 100, Y = 65 },
                   new DiagramPoint() { X = 65, Y = 100 },
                   new DiagramPoint() { X = 35, Y = 100 },
                   new DiagramPoint() { Y = 65 },
                   new DiagramPoint() { Y = 35 }
               },
               Shape = NodeBasicShapes.Polygon
           }
       };

       Node circleNode = new Node() {
           ID = "circleNode",
           OffsetX = 600,
           OffsetY = 100,
           Height = 100,
           Width = 100,
           Style = new ShapeStyle() { Fill = "yellow", StrokeWidth = 3, StrokeColor = "Black" },
           Shape = new BasicShape() {
               Type = NodeShapes.Basic,
               Shape = NodeBasicShapes.Ellipse
           }
       };

       nodes.Add(polygonNode);
       nodes.Add(circleNode);
   }
} 

Result:
This code creates a polygon and a circle, both displayed on the diagram with customizable properties.

You can download the complete working sample from here.

Conclusion:

I hope you enjoyed how to Create a GroupNode

You can refer to our Blazor Diagram feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Blazor Diagram example to understand how to create and manipulate data.

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Related Resource
Shape Property
Node Customization