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Connector in JavaScript Diagram control

08 May 2023 / 33 minutes to read

Connectors are objects used to create link between two points, nodes or ports to represent the relationships between them.

Create connector

Connector can be created by defining the source and target point of the connector. The path to be drawn can be defined with a collection of segments. To explore the properties of a connector, refer to Connector Properties.

Add connectors through connectors collection

The sourcePoint and targetPoint properties of connector allow you to define the end points of a connector.

The following code example illustrates how to add a connector through connector collection.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = [{
    // Name of the connector
    id: "connector1",
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    // Sets source and target points
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    }
}]
let diagram: Diagram = new Diagram({
    width: '100%',
    height: '600px',
    connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Add connector at runtime

Connectors can be added at runtime by using public method, diagram.add and can be removed at runtime by using public method, diagram.remove.

The following code example illustrates how to add connector at runtime.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
    id: "connector1",
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    }
}
let diagram: Diagram = new Diagram({
    width: '100%',
    height: '600px',
});
diagram.appendTo('#element');
// Adds to the diagram
diagram.add(connectors)
// Remove from the diagram
diagram.remove(connectors)

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Connectors from palette

Connectors can be predefined and added to the symbol palette. You can drop those connectors into the diagram, when required.

For more information about adding connectors from symbol palette, refer to Symbol Palette.

Draw connectors

Connectors can be interactively drawn by clicking and dragging on the diagram surface by using drawingObject.

For more information about drawing connectors, refer to Draw Connectors.

Update connector at runtime

Various connector properties such as sourcePoint, targetPoint, style, sourcePortID, targetPortID, etc., can be updated at the runtime.

The following code example illustrates how to update a connector’s source point, target point, styles properties at runtime.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = [{
    id: "connector1",
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    }
}]
let diagram: Diagram = new Diagram({
    width: '100%',
    height: '600px',
    connectors: connectors,
});
diagram.appendTo('#element');
// Update the connector properties at the run time
diagram.connectors[0].style.strokeColor = '#6BA5D7';
diagram.connectors[0].style.fill = '#6BA5D7';
diagram.connectors[0].style.strokeWidth = 2;
diagram.connectors[0].targetDecorator.style.fill = '#6BA5D7';
diagram.connectors[0].targetDecorator.style.strokeColor = '#6BA5D7';
diagram.connectors[0].sourcePoint.x = 150;
diagram.connectors[0].targetPoint.x = 150;
diagram.dataBind();

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Connect nodes

The sourceID and targetID properties allow to define the nodes to be connected.
The connectorSpacing property allows you to define the distance between the source node and the connector. It is the minimum distance the connector will re-rout or the new segment will create.
The following code example illustrates how to connect two nodes.

Source

Preview

index.ts

index.html

import {Diagram,NodeModel,ConnectorModel} from '@syncfusion/ej2-diagrams';
let nodes: NodeModel[] = [{
    id: 'Start',
    width: 140,
    height: 50,
    offsetX: 100,
    offsetY: 100,
    annotations: [{
        id: 'label1',
        content: 'Start'
    }],
    shape: {
        type: 'Flow',
        shape: 'Terminator'
    }
},
{
    id: 'Init',
    width: 140,
    height: 50,
    offsetX: 300,
    offsetY: 300,
    shape: {
        type: 'Flow',
        shape: 'Process'
    },
    annotations: [{
        content: 'var i = 0;'
    }]
}
];
let connectors: ConnectorModel = {
// Name of the connector
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
// ID of the source and target nodes
sourceID: "Start",
targetID: "Init",
connectorSpacing: 7,
type: 'Orthogonal'
};

let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
nodes: nodes,
connectors: [connectors],
// Defines the default properties for the node
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
});

diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

When you remove NodeConstraints InConnect from Default, the node accepts only an outgoing connection to dock in it. Similarly, when you remove NodeConstraints OutConnect from Default, the node accepts only an incoming connection to dock in it.
When you remove both InConnect and OutConnect NodeConstraints from Default, the node restricts connector to establish connection in it.
The following code illustrates how to disable InConnect constraints.

//Initialize diagram
let diagram: Diagram = new Diagram({
 nodes:[
     {
        id: 'node', width: 100, height: 100, offsetX: 100, offsetY: 150,
        shape: { type: 'Basic', shape: 'Rectangle' },
        //Disable InConnect constraints
        constraints: NodeConstraints.Default & ~NodeConstraints.InConnect,
     }
 ]
});
diagram.appendTo('#diagram');

Connections with ports

The sourcePortID and targetPortID properties allow to create connections between some specific points of source/target nodes. The following code example illustrates how to create port to port connections.

Source

Preview

index.ts

index.html

import {ConnectorModel,NodeModel,BasicShapeModel,PointPortModel,Diagram,PortVisibility} from'@syncfusion/ej2-diagrams';
let port1: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
}
port1.shape = 'Circle';
port1.id = 'nodeportnew'
port1.visibility = PortVisibility.Visible
port1.id = 'port';
port1.offset = {
x: 1,
y: 1
};
let port2: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
};
port2.offset = {
x: 1,
y: 0.5
};
port2.id = 'port1';
port2.visibility = PortVisibility.Visible
port2.shape = 'Circle';
let port3: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
};
port3.offset = {
x: 0,
y: 1
};
port3.id = 'newnodeport1';
port3.visibility = PortVisibility.Visible
port3.shape = 'Circle';
let nodes: NodeModel[] = [{
    id: 'node',
    width: 100,
    height: 100,
    offsetX: 100,
    offsetY: 100,
    ports: [port1]
},
{
    id: 'node1',
    width: 100,
    height: 100,
    offsetX: 300,
    offsetY: 100,
    ports: [port2, port3]
},
];
let connectors: ConnectorModel = {
id: "connector1",
sourcePoint: {
    x: 100,
    y: 100
},
type: 'Orthogonal',
targetPoint: {
    x: 200,
    y: 200
},
sourceID: 'node',
targetID: 'node1',
sourcePortID: 'port',
targetPortID: 'port1'
}
let diagram: Diagram = new Diagram({
width: 900,
height: 900,
nodes: nodes,
connectors: [connectors],
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Similarly, the sourcePortID or targetPortID can be changed at the runtime by changing the port sourcePortID or targetPortID.

Source

Preview

index.ts

index.html

import {ConnectorModel,NodeModel,BasicShapeModel,PointPortModel,Diagram,PortVisibility} from'@syncfusion/ej2-diagrams';
let port1: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
}
port1.shape = 'Circle';
port1.id = 'nodeportnew'
port1.visibility = PortVisibility.Visible
port1.id = 'port';
port1.offset = {
x: 1,
y: 1
};
let port2: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
};
port2.offset = {
x: 1,
y: 0.5
};
port2.id = 'port1';
port2.visibility = PortVisibility.Visible
port2.shape = 'Circle';
let port3: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
};
port3.offset = {
x: 0,
y: 1
};
port3.id = 'newnodeport1';
port3.visibility = PortVisibility.Visible
port3.shape = 'Circle';
let nodes: NodeModel[] = [{
    id: 'node',
    width: 100,
    height: 100,
    offsetX: 100,
    offsetY: 100,
    ports: [port1]
},
{
    id: 'node1',
    width: 100,
    height: 100,
    offsetX: 300,
    offsetY: 100,
    ports: [port2, port3]
},
];
let connectors: ConnectorModel = {
id: "connector1",
sourcePoint: {
    x: 100,
    y: 100
},
type: 'Orthogonal',
targetPoint: {
    x: 200,
    y: 200
},
sourceID: 'node',
targetID: 'node1',
sourcePortID: 'port',
targetPortID: 'port1'
}
let diagram: Diagram = new Diagram({
width: 900,
height: 900,
nodes: nodes,
connectors: [connectors],
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
});
diagram.appendTo('#element');
// Update the target portID at the run time
diagram.connectors[0].targetPortID = 'newnodeport1'

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

When you set PortConstraints to InConnect, the port accepts only an incoming connection to dock in it. Similarly, when you set PortConstraints to OutConnect, the port accepts only an outgoing connection to dock in it.
When you set PortConstraints to None, the port restricts connector to establish connection in it.

//Initialize diagram
let diagram: Diagram = new Diagram({
 nodes:[
     {
        id: 'node', width: 100, height: 100, offsetX: 100, offsetY: 150,
        shape: { type: 'Basic', shape: 'Rectangle' },
        ports: [
         //Enable portConstraints Inconnect
         { id: 'port', height: 10, width: 10, offset: { x: 1, y: 0.5 }, constraints: PortConstraints.InConnect },
       ]
     }
 ]
});
diagram.appendTo('#diagram');

Segments

The path of the connector is defined with a collection of segments. There are three types of segments.

Straight

To create a straight line, specify the type of the segment as straight and add a straight segment to segments collection and need to specify type for the connector. The following code example illustrates how to create a default straight segment.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel,StraightSegmentModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
id: "connector1",
type: 'Straight',
segments: [{
    // Defines the segment type of the connector
    type: 'Straight'
}],
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
}
}
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: [connectors],
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

The point property of straight segment allows you to define the end point of it. The following code example illustrates how to define the end point of a straight segment.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel,StraightSegmentModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
id: "connector1",
// Defines the segment type of the connector
segments: [{
    type: 'Straight',
    // Defines the point of the segment
    point: {
        x: 100,
        y: 150
    }
}],
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
type: 'Straight',
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
}
}
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: [connectors],
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Orthogonal

Orthogonal segments is used to create segments that are perpendicular to each other.

Set the segment type as orthogonal to create a default orthogonal segment and need to specify type. The following code example illustrates how to create a default orthogonal segment.

Multiple segments can be defined one after another. To create a connector with multiple segments, define and add the segments to connector.segments collection. The following code example illustrates how to create a connector with multiple segments.

The property maxSegmentThumb is used to limit the number of segment thumb in the connector.

Source

Preview

index.ts

index.html

import {
Diagram,
ConnectorModel,
OrthogonalSegmentModel,ConnectorConstraints
} from '@syncfusion/ej2-diagrams';

Diagram.Inject(ConnectorEditing);
let connectors: ConnectorModel[] = [{
    id: "connector1",
    // Define the type of the segment
    type: 'Orthogonal',
    segments: [{
        type: 'Orthogonal'
    }],
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    },
    maxSegmentThumb: 3,
    constraints:ConnectorConstraints.Default | ConnectorConstraints.DragSegmentThumb,
},]

let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
});

diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

maxSegmentThumb

The length and direction properties allow to define the flow and length of segment. The following code example illustrates how to create customized orthogonal segments.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel,OrthogonalSegmentModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = [{
    id: "connector1",
    type: 'Orthogonal',
    segments: [{
        type: 'Orthogonal',
        // Defines the direction for the segment lines
        direction: 'Right',
        // Defines the length for the segment lines
        length: 50
    }],
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    }
},
{
    id: "connector2",
    type: 'Orthogonal',
    // Defines multile segemnts for the connectors
    segments: [{
            type: 'Orthogonal',
            direction: 'Bottom',
            length: 150
        },
        {
            type: 'Orthogonal',
            direction: 'Right',
            length: 150
        }
    ],
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    sourcePoint: {
        x: 300,
        y: 100
    },
    targetPoint: {
        x: 400,
        y: 200
    }
}
]
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Note: You need to mention the segment type as same as what you mentioned in connector type. There should be no contradiction between connector type and segment type.

Avoid overlapping

Orthogonal segments are automatically re-routed, in order to avoid overlapping with the source and target nodes. The following preview illustrates how orthogonal segments are re-routed.

Source

Preview

index.ts

index.html

import {ConnectorModel,NodeModel,BasicShapeModel,PointPortModel,Diagram,PortVisibility} from '@syncfusion/ej2-diagrams';

let nodeport: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
};
nodeport.shape = 'Circle';
nodeport.visibility = PortVisibility.Visible
nodeport.id = 'port';
nodeport.offset = {
x: 0,
y: 0.5
};
let port2: PointPortModel = {
style: {
    strokeColor: '#366F8C',
    fill: '#366F8C'
}
}
port2.offset = {
x: 0,
y: 0.5
};
port2.id = 'port1';
port2.visibility = PortVisibility.Visible
port2.shape = 'Circle';
let nodes: NodeModel[] = [{
    id: 'node',
    width: 100,
    height: 100,
    offsetX: 100,
    offsetY: 100,
    ports: [nodeport]
},
{
    id: 'node1',
    width: 100,
    height: 100,
    offsetX: 300,
    offsetY: 100,
    ports: [port2]
},
];
let connectors: ConnectorModel = {
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
type: 'Orthogonal',
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
},
sourceID: 'node',
targetID: 'node1',
sourcePortID: 'port',
targetPortID: 'port1'
}
let diagram: Diagram = new Diagram({
width: 900,
height: 900,
nodes: nodes,
connectors: [connectors],
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

How to customize Orthogonal Segment Thumb Shape

The orthogonal connector can have any number of segments in between the source and the target point. Segments are rendered with the rhombus shape by default. The segmentThumbShape property allows you to change the default shape of the segment thumb. The following predefined shapes are provided:

Shape name	Shape
Rhombus
Square
Rectangle
Ellipse
Arrow
OpenArrow
Circle
Fletch
OpenFetch
IndentedArrow
OutdentedArrow
DoubleArrow

You can customize the style of the thumb shape by overriding the class e-orthogonal-thumb.

Source

Preview

index.ts

index.html

import { Diagram, ConnectorModel } from '@syncfusion/ej2-diagrams';

Diagram.Inject(ConnectorEditing);



let connector2: ConnectorModel = {};

connector2.id = 'connector2';

// Define the type of the segment

connector2.type = 'Orthogonal';

connector2.sourcePoint = { x: 250, y: 250 };

connector2.targetPoint = { x: 350, y: 350 };

connector2.segments = [{

        type: 'Orthogonal',

         // Defines the direction for the segment lines

        direction: "Right",

          // Defines the length for the segment lines

        length:70

        },

        {

        type:'Orthogonal',

        direction: "Bottom",

        length: 20

        }]



let diagram: Diagram = new Diagram({

width: '900px', height: '500px', connectors: [connector2],

getConnectorDefaults: function (connector: ConnectorModel) {

connector.constraints = ConnectorConstraints.Default | ConnectorConstraints.DragSegmentThumb;

}

});

diagram.appendTo('#diagram');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Segment Thumb Shape

Use the following CSS to customize the segment thumb shape.

 .e-orthogonal-thumb {

        stroke:#24039e;

        fill:rgb(126, 190, 219);

        stroke-width: 3px;

        }

Bezier

Bezier segments are used to create curve segments and the curves are configurable either with the control points or with vectors.

To create a bezier segment, the segment.type is set as bezier and need to specify type for the connector. The following code example illustrates how to create a default bezier segment.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel[] = [

{
    id: 'connector1',
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    type: 'Bezier',
    segments: [{
        // Defines the type of the segment
        type: 'Bezier',
    }],
    sourcePoint: {
        x: 50,
        y: 100
    },
    targetPoint: {
        x: 150,
        y: 200
    },
},
];
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

The point1 and point2 properties of bezier segment enable you to set the control points. The following code example illustrates how to configure the bezier segments with control points.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel[] = [

{
    id: 'connector3',
    type: 'Bezier',
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    segments: [{
        type: 'Bezier',
        // First control point: an absolute position from the page origin
        point1: {
            x: 100,
            y: 100
        },
        // Second control point: an absolute position from the page origin
        point2: {
            x: 200,
            y: 200
        }
    }],
    sourcePoint: {
        x: 100,
        y: 200
    },
    targetPoint: {
        x: 200,
        y: 100
    },
},
];
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

The vector1 and vector2 properties of bezier segment enable you to define the vectors. The following code illustrates how to configure a bezier curve with vectors.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel[] = [{
id: 'connector2',
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
// Defines the type of the segment
type: 'Bezier',
segments: [{
    type: 'Bezier',
    // Length and angle between the source point and the first control point
    vector1: {
        distance: 100,
        angle: 90
    },
    // Length and angle between the target point and the second control point
    vector2: {
        distance: 45,
        angle: 270
    }
}],
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
},
}, ];
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Avoid overlapping with bezier

By default, when there are no segments defined for a bezier connector, the bezier segments will be created automatically and routed in such a way that avoids overlapping with the source and target nodes.

Source

Preview

index.ts

index.html

import {Diagram,NodeModel,ConnectorModel,ConnectorEditing,ConnectorConstraints} from '@syncfusion/ej2-diagrams';
Diagram.Inject(ConnectorEditing);


let nodes: NodeModel[] = [{
id: 'Start',
offsetX: 250,
offsetY: 150,
annotations: [{ content: 'Start' }]
},
{
id: 'End',
offsetX: 450,
offsetY: 200,
annotations: [{ content: 'End' }]
}];

let connectors: ConnectorModel[] = [{
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: { shape: 'None' },
// ID of the source and target nodes
sourceID: "Start",
targetID: "End",
type: 'Bezier'
}];

let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
nodes: nodes,
connectors: connectors,
// Defines the default properties for the node
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.shape = { type: 'Basic', shape: 'Rectangle' }
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
getConnectorDefaults: (connector: ConnectorModel) => {
    connector.constraints = ConnectorConstraints.Default | ConnectorConstraints.DragSegmentThumb;
    return connector;
}
});

diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Also, the intermediate point of two adjacent bezier segments can be edited interactively based on the bezierSettings.segmentEditOrientation property of the connector class.

How to interact with the bezier segments efficiently

While interacting with multiple bezier segments, maintain their control points at the same distance and angle by using the bezierSettings.smoothness property of the connector class.

BezierSmoothness value	Description
SymmetricDistance	Both control points of adjacent segments will be at the same distance when any one of them is editing.
SymmetricAngle	Both control points of adjacent segments will be at the same angle when any one of them is editing.
Default	Both control points of adjacent segments will be at the same angle and same distance when any one of them is editing.
None	Segment’s control points are interacted independently from each other.

Source

Preview

index.ts

index.html

import {Diagram,NodeModel,ConnectorModel,ConnectorEditing,ConnectorConstraints} from '@syncfusion/ej2-diagrams';
Diagram.Inject(ConnectorEditing);


let nodes: NodeModel[] = [{
id: 'Start',
offsetX: 250,
offsetY: 150,
annotations: [{ content: 'Start' }],
ports: [{
    id: 'StartPort',
    visibility: PortVisibility.Visible,
    shape: 'Circle',
    offset: { x: 1, y: 0.5 },
    style: { strokeColor: '#366F8C', fill: '#366F8C' }
}]
},
{
id: 'End',
offsetX: 450,
offsetY: 200,
annotations: [{ content: 'End' }],
ports: [{
    id: 'EndPort',
    visibility: PortVisibility.Visible,
    shape: 'Circle',
    offset: { x: 0, y: 0.5 },
    style: { strokeColor: '#366F8C', fill: '#366F8C' }
}]
}];

let connectors: ConnectorModel[] = [{
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: { shape: 'None' },
// ID of the source and target nodes
sourceID: "Start",
sourcePortID: "StartPort",
targetID: "End",
targetPortID: "EndPort",
type: 'Bezier',

// Configuring settings for bezier interactions
bezierSettings : { smoothness: BezierSmoothness.SymmetricAngle }
}];

let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
nodes: nodes,
connectors: connectors,
// Defines the default properties for the node
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.shape = { type: 'Basic', shape: 'Rectangle' }
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
getConnectorDefaults: (connector: ConnectorModel) => {
    connector.constraints = ConnectorConstraints.Default | ConnectorConstraints.DragSegmentThumb;
    return connector;
}
});

diagram.appendTo('#element');



Also, the visibility of control points can be controlled using the bezierSettings.controlPointsVisibility property of the connector class.

{% tab template= "diagram/connectors", es5Template="es5ConnectorBezierVisibility" %}


import {Diagram,NodeModel,ConnectorModel,ConnectorEditing,ConnectorConstraints} from '@syncfusion/ej2-diagrams';
Diagram.Inject(ConnectorEditing);


let nodes: NodeModel[] = [{
id: 'Start',
offsetX: 250,
offsetY: 150,
annotations: [{ content: 'Start' }],
ports: [{
    id: 'StartPort',
    visibility: PortVisibility.Visible,
    shape: 'Circle',
    offset: { x: 1, y: 0.5 },
    style: { strokeColor: '#366F8C', fill: '#366F8C' }
}]
},
{
id: 'End',
offsetX: 450,
offsetY: 200,
annotations: [{ content: 'End' }],
ports: [{
    id: 'EndPort',
    visibility: PortVisibility.Visible,
    shape: 'Circle',
    offset: { x: 0, y: 0.5 },
    style: { strokeColor: '#366F8C', fill: '#366F8C' }
}]
}];

let connectors: ConnectorModel[] = [{
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: { shape: 'None' },
// ID of the source and target nodes
sourceID: "Start",
sourcePortID: "StartPort",
targetID: "End",
targetPortID: "EndPort",
type: 'Bezier',

// Configuring settings for bezier interactions
bezierSettings : { controlPointsVisibility: ControlPointsVisibility.Source | ControlPointsVisibility.Target }
}];

let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
nodes: nodes,
connectors: connectors,
// Defines the default properties for the node
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.shape = { type: 'Basic', shape: 'Rectangle' }
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
getConnectorDefaults: (connector: ConnectorModel) => {
    connector.constraints = ConnectorConstraints.Default | ConnectorConstraints.DragSegmentThumb;
    return connector;
}
});

diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Decorator

Starting and ending points of a connector can be decorated with some customizable shapes like arrows, circles, diamond, or path. The connection end points can be decorated with the sourceDecorator and targetDecorator properties of the connector.
The shape property of sourceDecorator allows to define the shape of the decorators. Similarly, the shape property of targetDecorator allows to define the shape of the decorators.
To create custom shape for source decorator, use pathData property. Similarly, to create custom shape for target decorator, use pathData property.
The following code example illustrates how to create decorators of various shapes.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
id: "connector1",
type: 'Straight',
// Decorator shape- circle
sourceDecorator: {
    shape: 'Circle',
    // Defines the style for the sourceDecorator
    style: {
        // Defines the strokeWidth for the sourceDecorator
        strokeWidth: 3,
        // Defines the strokeColor for the sourceDecorator
        strokeColor: 'red'
    },
},
// Decorator shape - Diamond
targetDecorator: {
    // Defines the custom shape for the connector's target decorator
    shape: 'Custom',
    //Defines the  path for the connector's target decorator
    pathData: 'M80.5,12.5 C80.5,19.127417 62.59139,24.5 40.5,24.5 C18.40861,24.5 0.5,19.127417 0.5,12.5' +
        'C0.5,5.872583 18.40861,0.5 40.5,0.5 C62.59139,0.5 80.5,5.872583 80.5,12.5 z'
    //defines the style for the target decorator
    style: {
        // Defines the strokeWidth for the targetDecorator
        strokeWidth: 3,
        // Defines the strokeColor for the sourceDecorator
        strokeColor: 'green',
        // Defines the opacity for the sourceDecorator
        opacity: .8
    },
},
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
}
};
let connectors2: ConnectorModel = {
id: "connectors2",
type: 'Straight',
// Decorator shape - IndentedArrow
sourceDecorator: {
    shape: 'IndentedArrow',
    style: {
        strokeWidth: 3,
        strokeColor: 'blue'
    },
},
// Decorator shape - OutdentedArrow
targetDecorator: {
    shape: 'OutdentedArrow',
    style: {
        strokeWidth: 3,
        strokeColor: 'yellow'
    },
},
sourcePoint: {
    x: 400,
    y: 100
},
targetPoint: {
    x: 300,
    y: 200
}
}
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: [connectors, connectors2],
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Padding

Padding is used to leave the space between the Connector’s end point and the object to where it is connected.

The sourcePadding property of connector defines space between the source point and the source node of the connector.
The targetPadding property of connector defines space between the end point and the target node of the connector.
The following code example illustrates how to leave space between the connection end points and source and target nodes.

Source

Preview

index.ts

index.html

import {ConnectorModel,NodeModel,BasicShapeModel,Diagram} from '@syncfusion/ej2-diagrams';
let nodes: NodeModel[] = [{
    id: 'node',
    width: 100,
    height: 100,
    offsetX: 100,
    offsetY: 100,
},
{
    id: 'node1',
    width: 100,
    height: 100,
    offsetX: 300,
    offsetY: 100,
},
];
let connectors: ConnectorModel = {
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
sourceID: 'node',
targetID: 'node1',
// Set Source Padding value
sourcePadding:20,
// Set Target Padding value
targetPadding:20
}
let diagram: Diagram = new Diagram({
width: '100%',
height: 900,
nodes: nodes,
connectors: [connectors],
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Flip

The diagram Provides support to flip the connector. The flip is performed to give the mirrored image of the original element.

The flip types are as follows:

HorizontalFlip Horizontal is used to interchange the connector source and target x points.
VerticalFlip Vertical is used to interchange the connector source and target y points.
Both Both is used to interchange the source point as target point and target point as source point .

Source

Preview

index.ts

index.html

import {ConnectorModel,NodeModel,BasicShapeModel,Diagram} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
id: "connector1",
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
type: 'Orthogonal',
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
},
// Flip the connector in horizontal direction
flip:"Horizontal"
}
let diagram: Diagram = new Diagram({
width: '100%',
height: 900,
connectors: [connectors],
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Note: The flip is not applicable when the connectors connect in nodes

Bridging

Line bridging creates a bridge for lines to smartly cross over the other lines, at points of intersection. By default, bridgeDirection is set to top. Depending upon the direction given bridging direction appears. Bridging can be enabled/disabled either with the connector.constraints or diagram.constraints. The following code example illustrates how to enable line bridging.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorBridging,DiagramConstraints,ConnectorModel,NodeModel}from'@syncfusion/ej2-diagrams';
Diagram.Inject(ConnectorBridging);
let node1: NodeModel = {
id: 'Transaction',
width: 150,
height: 60,
offsetX: 300,
offsetY: 60,
shape: {
    type: 'Flow',
    shape: 'Terminator'
},
annotations: [{
    id: 'label1',
    content: 'Start Transaction',
    offset: {
        x: 0.5,
        y: 0.5
    }
}],
};
let node2: NodeModel = {
id: 'Verification',
width: 150,
height: 60,
offsetX: 300,
offsetY: 250,
shape: {
    type: 'Flow',
    shape: 'Process'
},
annotations: [{
    id: 'label2',
    content: 'Verification',
    offset: {
        x: 0.5,
        y: 0.5
    }
}]
};
let connectors: ConnectorModel = {
id: 'connector1',
type: 'Straight',
sourceID: 'Transaction',
targetID: 'Verification'
};
let connectors2: ConnectorModel = {
id: 'connector2',
type: 'Straight',
sourcePoint: {
    x: 200,
    y: 130
},
targetPoint: {
    x: 400,
    y: 130
}
};
let connector3: ConnectorModel = {
id: 'connector3',
type: 'Straight',
sourcePoint: {
    x: 200,
    y: 170
},
targetPoint: {
    x: 400,
    y: 170
}
};
// Enables bridging for every connector added in the model
let diagram: Diagram = new Diagram({
width: '100%',
getConnectorDefaults: (obj: ConnectorModel): ConnectorModel => {
    obj.style.strokeColor = '#6BA5D7';
    obj.style.fill = '#6BA5D7';
    obj.style.strokeWidth = 2;
    obj.targetDecorator.style.fill = '#6BA5D7';
    obj.targetDecorator.style.strokeColor = '#6BA5D7';
    return obj;
},
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
nodes: [node1, node2],
height: '600px',
// Enables the bridging constraints for the connector
constraints: DiagramConstraints.Default | DiagramConstraints.Bridging,
connectors: [connectors, connectors2, connector3]
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Note: You need to inject connector bridging module into the diagram.

The bridgeSpace property of connectors can be used to define the width for line bridging.

Limitation: Bezier segments do not support bridging.

Corner radius

Corner radius allows to create connectors with rounded corners. The radius of the rounded corner is set with the cornerRadius property.

Source

Preview

index.ts

index.html

import {Diagram,NodeModel,ConnectorModel} from '@syncfusion/ej2-diagrams';
let nodes: NodeModel[] = [{
    id: 'node1',
    width: 100,
    height: 100,
    offsetX: 100,
    offsetY: 100,
},
{
    id: 'node2',
    width: 100,
    height: 100,
    offsetX: 100,
    offsetY: 350,
},
]
let connectors: ConnectorModel[] = [{
id: "connector1",
type: 'Orthogonal',
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
targetDecorator: {
    style: {
        fill: '#6BA5D7',
        strokeColor: '#6BA5D7'
    }
},
// Sets the radius for the rounded corner
cornerRadius: 10,
sourceID: 'node1',
targetID: 'node2',
segments: [{
    type: 'Orthogonal',
    direction: 'Right',
    length: 50
}],
}]
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
nodes: nodes,
getNodeDefaults: (node: NodeModel) => {
    node.height = 100;
    node.width = 100;
    node.style.fill = '#6BA5D7';
    node.style.strokeColor = 'white';
    return node;
},
});

diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Appearance

The connector’s strokeWidth, strokeColor, strokeDashArray, and opacity properties are used to customize the appearance of the connector segments.
The visible property of the connector enables or disables the visibility of connector.
Default values for all the connectors can be set using the getConnectorDefaults properties. For example, if all connectors have the same type or having the same property then such properties can be moved into getConnectorDefaults.

Segment appearance

The following code example illustrates how to customize the segment appearance.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel[] = [{
    id: "connector1",
    targetDecorator: {
        style: {
            strokeColor: '#6BA5D7',
            fill: '#6BA5D7',
            strokeWidth: 2
        }
    },
    style: {
        // Stroke color
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        // Stroke width of the line
        strokeWidth: 2,
        // Line style
        strokeDashArray: '2,2'
    },
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    },
    segments: [{
        type: 'Orthogonal',
        direction: 'Right',
        length: 50
    }],
},
{
    id: "connector2",
    // Set the visibility of the connector to false
    visible: false,
    targetDecorator: {
        style: {
            strokeColor: '#6BA5D7',
            fill: '#6BA5D7',
            strokeWidth: 2
        }
    },
    style: {
        // Stroke color
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        // Stroke width of the line
        strokeWidth: 2,
        // Line style
        strokeDashArray: '2,2'
    },
    sourcePoint: {
        x: 300,
        y: 300
    },
    targetPoint: {
        x: 400,
        y: 400
    },
    segments: [{
        type: 'Orthogonal',
        direction: 'Right',
        length: 50
    }],
}
]
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
// Define the default values for all the connector.Similary we can add all the properties
getConnectorDefaults: (obj: ConnectorModel): ConnectorModel => {
    obj.type = 'Orthogonal'
    return obj;
}
connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Decorator appearance

The source decorator’s strokeColor, strokeWidth, and strokeDashArray properties are used to customize the color, width, and appearance of the decorator.
To set the border stroke color, stroke width, and stroke dash array for the target decorator, use strokeColor, strokeWidth, and strokeDashArray.
To set the size for source and target decorator, use width and height property.

The following code example illustrates how to customize the appearance of the decorator.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel[] = [{
id: "connector1",
type: 'Straight',
style: {
    strokeColor: '#6BA5D7',
    fill: '#6BA5D7',
    strokeWidth: 2
},
bridgeSpace: 20,
// Cutomize the target decorator
targetDecorator: {
    style: {
        // Fill color of the decorator
        fill: '#6BA5D7',
        // Stroke color of the decorator
        strokeColor: '#6BA5D7'
    }
},
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
}
}];
let diagram: Diagram = new Diagram({
width: '100%',
height: '600px',
connectors: connectors,
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Interaction

Diagram allows to edit the connectors at runtime. To edit the connector segments at runtime, refer to Connection Editing.

Automatic line routing

Diagram provides additional flexibility to re-route the diagram connectors. A connector will frequently re-route itself when a shape moves next to it. The following screenshot illustrates how the connector automatically re-routes the segments.

Dependency LineRouting module should be injected to the application as the following code snippet.

/**
 * Injecting the automatic line routing module.
 */
Diagram.Inject(LineRouting);

Now, the line routing constraints must be included to the default diagram constraints to enable automatic line routing support like below.

/**
 *  Initialize the Diagram
 */
   let diagram: Diagram = new Diagram({
     //Add Line routing constraints to diagram.
    constraints: ej.diagrams.DiagramConstraints.Default |
                ej.diagrams.DiagramConstraints.LineRouting
});
diagram.appendTo('#diagram');

The following code block shows how to create the diagram with specifying nodes, connectors, constraints, and necessary modules for line routing.

Source

Preview

index.ts

index.html

import {
  Diagram, SnapConstraints, LineRouting, DiagramConstraints, NodeModel, ConnectorModel
} from '@syncfusion/ej2-diagrams';
Diagram.Inject(LineRouting);
let nodes: NodeModel[] = [
  { id: 'shape1', offsetX: 100, offsetY: 100, width: 120, height: 50 },
  { id: 'shape2', offsetX: 300, offsetY: 300, width: 120, height: 50 },
  { id: 'shape3', offsetX: 150, offsetY: 200, width: 120, height: 50 }
];
let connectors: ConnectorModel[] = [
  { id: 'connector', sourceID: 'shape1', targetID: 'shape2', type: 'Orthogonal' }
];
//initialize the diagram control
let diagram: Diagram = new Diagram({
  width: '100%', height: 900, nodes: nodes, connectors: connectors,
  //Add Line routing constraints to diagram.
  constraints: DiagramConstraints.Default | DiagramConstraints.LineRouting,
  getNodeDefaults: function (node) {
node = { style: { strokeColor: '#6BA5D7', fill: '#6BA5D7' } }
return node;
  },
  snapSettings: {
constraints: SnapConstraints.None,
  }
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

In some situations, automatic line routing enabled diagram needs to ignore a specific connector from automatic line routing. So, in this case, auto routing feature can be disabled to the specific connector using the constraints property of the connector like the following code snippet.

Source

Preview

index.ts

index.html

import {
  Diagram, SnapConstraints,ConnectorConstraints, LineRouting, DiagramConstraints, NodeModel, ConnectorModel
} from '@syncfusion/ej2-diagrams';
Diagram.Inject(LineRouting);
let nodes: NodeModel[] = [
  { id: 'shape1', offsetX: 100, offsetY: 100, width: 120, height: 50 },
  { id: 'shape2', offsetX: 350, offsetY: 300, width: 120, height: 50 },
  { id: 'shape3', offsetX: 150, offsetY: 200, width: 120, height: 50 },
  { id: 'shape4', offsetX: 300, offsetY: 200, width: 120, height: 50 }
];
let connectors: ConnectorModel[] = [
  { id: 'connector', sourceID: 'shape1', targetID: 'shape2', type: 'Orthogonal',annotations:[{offset:.7,content:' Routing \n enabled',style:{fill:"white"}}]},
  { id: 'connector2', sourceID: 'shape1', targetID: 'shape2',annotations:[{offset:.6,content:' Routing \n disabled',style:{fill:"white"}}], type: 'Orthogonal', constraints: ConnectorConstraints.Default &~ ConnectorConstraints.InheritLineRouting }
];
//initialize the diagram control
let diagram: Diagram = new Diagram({
  width: '100%', height: 900, nodes: nodes, connectors: connectors,
  //Add Line routing constraints to diagram.
  constraints: DiagramConstraints.Default | DiagramConstraints.LineRouting,
  getNodeDefaults: function (node) {
node = { style: { strokeColor: '#6BA5D7', fill: '#6BA5D7' } }
return node;
  },
  snapSettings: {
constraints: SnapConstraints.None,
  }
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Constraints

The constraints property of connector allows to enable/disable certain features of connectors.
To enable or disable the constraints, refer constraints.

The following code illustrates how to disable selection.

Source

Preview

index.ts

index.html

import {Diagram,DiagramConstraints,ConnectorConstraints,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
    id: "connector1",
    // Disables selection constraints
    constraints: ConnectorConstraints.Default & ~ConnectorConstraints.Select,
    type: 'Straight',
    style: {
        strokeColor: '#6BA5D7',
        fill: '#6BA5D7',
        strokeWidth: 2
    },
    targetDecorator: {
        style: {
            fill: '#6BA5D7',
            strokeColor: '#6BA5D7'
        }
    },
    sourcePoint: {
        x: 100,
        y: 100
    },
    targetPoint: {
        x: 200,
        y: 200
    }
};
let diagram: Diagram = new Diagram({
width: 1500,
height: 1500,
connectors: [connectors]
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Custom properties

The addInfo property of connectors allow you to maintain additional information to the connectors.

let connectors: ConnectorModel = {
id: 'connector1',
// Defines the information about the connector
addInfo:'centralconnector',
type: 'Straight',
sourceID: 'Transaction',
targetID: 'Verification'
};

Stack order

The connectors zIndex property specifies the stack order of the connector. A connector with greater stack order is always in front of a connector with a lower stack order.

The following code illustrates how to render connector based on the stack order.

Source

Preview

index.ts

index.html

import {Diagram,ConnectorModel} from '@syncfusion/ej2-diagrams';
let connectors: ConnectorModel = {
id: 'connector1',
// Defines the z-index value for the connector
zIndex: 2,
type: 'Straight',
sourcePoint: {
    x: 300,
    y: 100
},
targetPoint: {
    x: 300,
    y: 200
}
};
let connectors2: ConnectorModel = {
id: 'connector2',
type: 'Straight',
// Defines the z-index value for the connector
zIndex: 1,
sourcePoint: {
    x: 100,
    y: 100
},
targetPoint: {
    x: 200,
    y: 200
}
};
let diagram: Diagram = new Diagram({
width: '100%',
getConnectorDefaults: (obj: ConnectorModel): ConnectorModel => {
    obj.style.strokeColor = '#6BA5D7';
    obj.style.fill = '#6BA5D7';
    obj.style.strokeWidth = 2;
    obj.targetDecorator.style.fill = '#6BA5D7';
    obj.targetDecorator.style.strokeColor = '#6BA5D7';
    return obj;
},
height: '600px',
connectors: [connectors, connectors2]
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Enable Connector Splitting

The connectors are used to create a link between two points, ports, or nodes to represent the relationship between them. Split the connector between two nodes when dropping a new node onto an existing connector and create a connection between the new node and existing nodes by setting the enableConnectorSplit as true. The default value of the enableConnectorSplit is false

The following code illustrates how to split the connector and create a connection with new node.

Source

Preview

index.ts

index.html

import {
Diagram,NodeModel,ConnectorModel,ConnectorConstraints
} from '@syncfusion/ej2-diagrams';

let node1: NodeModel = {
id: 'node1',
width: 100, height: 100,
offsetX: 150, offsetY: 150,
annotations: [{ content: 'node1' }]
};
let node2: NodeModel = {
id: 'node2',
width: 100, height: 100,
offsetX: 650, offsetY: 150,
annotations: [{ content: 'node2' }]
};
let node3: NodeModel = {
id: 'node3',
width: 100, height: 100,
offsetX: 490, offsetY: 290,
annotations: [{ content: 'node3' }]
};
let connector1: ConnectorModel = {
id: 'connector1',sourceID:"node1",targetID:"node2",
constraints: ConnectorConstraints.Default | ConnectorConstraints.AllowDrop
};
let diagram:Diagram = new Diagram({
width: 1500, height: 1000,
enableConnectorSplit:true,
nodes: [node1, node2, node3],
connectors: [connector1]
});
diagram.appendTo('#element');

<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>EJ2 Diagram</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-diagrams/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/fabric.css" rel="stylesheet" />
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Enable Connector Split

Connector in JavaScript Diagram control

Create connector

Add connectors through connectors collection

Add connector at runtime

Connectors from palette

Draw connectors

Update connector at runtime

Connect nodes

Connections with ports

Segments

Straight

Orthogonal

Avoid overlapping

How to customize Orthogonal Segment Thumb Shape

Bezier

Avoid overlapping with bezier

How to interact with the bezier segments efficiently

Decorator

Padding

Flip

Bridging

Corner radius

Appearance

Segment appearance

Decorator appearance

Interaction

Automatic line routing

Constraints

Custom properties

Stack order

Enable Connector Splitting

See Also