Custom shape example
In addition to NetChart's built-in node shapes, developers can provide their own shapes and their own rendering functions.
HTML
HTML
<script src="https://cdn.zoomcharts-cloud.com/1/nightly/zoomcharts.js"></script>
<div id="demo"></div>
CSS
CSS
//No CSS for this example
JavaScript
JavaScript
var defaultUpdateFunction = function (ctx, radius) {
var halfWidth, halfHeight;
halfWidth = halfHeight = radius;
return {
bounds: [-halfHeight, -halfHeight, halfWidth, halfHeight],
HWidth: halfWidth,
HHeight: halfHeight,
anchor: [0, 0]
};
};
var someUserDefinedShapes = {
rect: {
onUpdate: defaultUpdateFunction,
paint: function (ctx, offsetX, offsetY, Hwidth, Hheight) {
if (this.hovered) {
ctx.fillStyle = "rgba(111,82,184,1)";
} else {
ctx.fillStyle = this.fillColor;
}
ctx.fillRect(offsetX - Hwidth, offsetY - Hheight, Hwidth * 2, Hheight * 2);
},
paintSelection: function (ctx, offsetX, offsetY, Hwidth, Hheight) {
ctx.fillStyle = this.layer.style.selection.fillColor;
ctx.fillRect(offsetX - Hwidth-10, offsetY - Hheight-10, Hwidth * 2 + 20, Hheight * 2 + 20);
}
},
diamond: {
onUpdate: defaultUpdateFunction,
paint: function (ctx, offsetX, offsetY, Hwidth, Hheight) {
ctx.fillStyle = this.fillColor;
ctx.beginPath();
ctx.moveTo(offsetX, offsetY - Hheight);
ctx.lineTo(offsetX + Hwidth, offsetY);
ctx.lineTo(offsetX, offsetY + Hheight);
ctx.lineTo(offsetX - Hwidth, offsetY);
ctx.closePath();
ctx.fill();
},
paintSelection: null
},
hexagon: {
onUpdate: function (ctx, radius) {
// hexagon does not have square bounds, so the bounds for node repulsion forces are calculated here
var halfWidth, halfHeight;
halfWidth = radius;
halfHeight = radius * Math.tan(Math.PI / 3) * 0.5;
return {
bounds: [-halfHeight, -halfHeight, halfWidth, halfHeight],
HWidth: halfWidth,
HHeight: halfHeight,
anchor: [0, 0]
};
},
paint: function (ctx, offsetX, offsetY, Hwidth, Hheight, image) {
Hheight = Hwidth * Math.tan(Math.PI / 3) * 0.5;
var x = Hwidth / 2;
var imageRadius = Hheight * 0.8;
ctx.fillStyle = this.fillColor;
ctx.beginPath();
ctx.moveTo(offsetX + x, offsetY - Hheight);
ctx.lineTo(offsetX + Hwidth, offsetY);
ctx.lineTo(offsetX + x, offsetY + Hheight);
ctx.lineTo(offsetX - x, offsetY + Hheight);
ctx.lineTo(offsetX - Hwidth, offsetY);
ctx.lineTo(offsetX - x, offsetY - Hheight);
ctx.closePath();
ctx.fill();
if (image) {
// Optionally you can paint the image supplied in the desired position for your custom shape
ctx.drawImage(image, offsetX - imageRadius, offsetY - imageRadius, imageRadius * 2, imageRadius * 2);
}
},
paintSelection: null
}
};
var chart = new NetChart({
container: document.getElementById("demo"),
area: { height: null },
data: { url: "/dvsl/data/net-chart/friend-net.json" },
navigation: { initialNodes: ["m-1"], mode: "focusnodes" },
style: {
node: {
display: "customShape",
customShape: someUserDefinedShapes.rect,
imageCropping: true
},
nodeStyleFunction: function (node) {
node.image = "/dvsl/data/net-chart/friend-net/" + node.id + ".png";
if (node.data.name) {
// Note that node labels are added here as items.
// This means that label rendering will be handled by ZoomCharts.
// However if you want to implement your own logic for node text
// rendering, you can set node.label = "your text", and then
// implement your custom text rendering logic in your custom paint method.
node.items = [
{
text: node.data.name,
aspectRatio: 0,
px: 0, py: 1, y: 6,
textStyle: { fillColor: "black" }
}
];
}
}
}
});
var div = $('<div class="type-select" style="position:absolute;z-index:2" >');
var x = $('<label for="v1"><input id="v1" type="radio" checked="checked" name="nodeType" value="rect" />Rectangle <b>(Note: Rectangle shape is also available as a built-in shape since 1.9)</label><br/>');
div.append(x);
x = $('<label for="v2"><input id="v2" type="radio" name="nodeType" value="diamond"/> Diamond</label><br/>');
div.append(x);
x = $('<label for="v3"><input id="v3" type="radio" name="nodeType" value="hexagon"/> Hexagon</label><br/>');
div.append(x);
$("#demo").before(div);
// using jquery to add event handler
// Update the chart settings, when user changes desired node display type
$('.type-select input:radio').change(function () {
var selected = $('.type-select input:radio:checked').val();
chart.updateSettings({
style: {
node: {
customShape: someUserDefinedShapes[selected]
}
}
});
});
Data
Data
Download Data
{
"nodes": [
{
"id": "m-1",
"age": 20,
"name": "Joe",
"loaded": true
},
{
"id": "m-2",
"age": 15,
"name": "Fred",
"loaded": true
},
{
"id": "m-3",
"age": 16,
"name": "Tom",
"loaded": true
},
{
"id": "m-4",
"age": 35,
"name": "Robert",
"loaded": true
},
{
"id": "m-5",
"age": 38,
"name": "Mark",
"loaded": true
},
{
"id": "m-6",
"age": 42,
"name": "Jason",
"loaded": true
},
{
"id": "m-7",
"age": 37,
"name": "Bill",
"loaded": true
},
{
"id": "m-8",
"age": 60,
"name": "Andre",
"loaded": true
},
{
"id": "m-9",
"age": 63,
"name": "Daniel",
"loaded": true
},
{
"id": "m-10",
"age": 17,
"name": "Thomas",
"loaded": true
},
{
"id": "m-11",
"age": 21,
"name": "Sergejs",
"loaded": true
},
{
"id": "m-12",
"age": 26,
"name": "Bryon",
"loaded": true
},
{
"id": "m-13",
"age": 29,
"name": "Toby",
"loaded": true
},
{
"id": "f-1",
"age": 28,
"name": "Anna",
"loaded": true
},
{
"id": "f-2",
"age": 21,
"name": "Wendy",
"loaded": true
},
{
"id": "f-3",
"age": 17,
"name": "Dina",
"loaded": true
},
{
"id": "f-4",
"age": 26,
"name": "Cate",
"loaded": true
},
{
"id": "f-5",
"age": 31,
"name": "Elisa",
"loaded": true
},
{
"id": "f-6",
"age": 34,
"name": "Suzie",
"loaded": true
},
{
"id": "f-7",
"age": 26,
"name": "Trixie",
"loaded": true
},
{
"id": "f-8",
"age": 37,
"name": "Emily",
"loaded": true
},
{
"id": "f-9",
"age": 39,
"name": "Alice",
"loaded": true
},
{
"id": "f-10",
"age": 42,
"name": "Violet",
"loaded": true
},
{
"id": "f-11",
"age": 32,
"name": "Sara",
"loaded": true
},
{
"id": "f-12",
"age": 28,
"name": "Julia",
"loaded": true
},
{
"id": "f-13",
"age": 19,
"name": "Ramona",
"loaded": true
},
{
"id": "f-14",
"age": 20,
"name": "Flavia",
"loaded": true
},
{
"id": "f-15",
"age": 23,
"name": "Liga",
"loaded": true
},
{
"id": "f-16",
"age": 27,
"name": "Jessica",
"loaded": true
},
{
"id": "f-17",
"age": 40,
"name": "Barbara",
"loaded": true
},
{
"id": "f-18",
"age": 45,
"name": "Hanna",
"loaded": true
},
{
"id": "f-19",
"age": 53,
"name": "Giselle",
"loaded": true
},
{
"id": "f-20",
"age": 27,
"name": "Mia",
"loaded": true
},
{
"id": "f-21",
"age": 19,
"name": "Rose",
"loaded": true
},
{
"id": "f-23",
"age": 28,
"name": "Judy",
"loaded": true
},
{
"id": "f-22",
"age": 32,
"name": "Nikola",
"loaded": true
},
{
"id": "f-24",
"age": 34,
"name": "Sofia",
"loaded": true
},
{
"id": "f-25",
"age": 37,
"name": "Fatima",
"loaded": true
},
{
"id": "f-26",
"age": 44,
"name": "Samantha",
"loaded": true
},
{
"id": "f-27",
"age": 23,
"name": "Chelia",
"loaded": true
},
{
"id": "f-28",
"age": 18,
"name": "Alexa",
"loaded": true
},
{
"id": "f-29",
"age": 21,
"name": "Karla",
"loaded": true
},
{
"id": "f-30",
"age": 23,
"name": "Karina",
"loaded": true
},
{
"id": "f-31",
"age": 51,
"name": "Patricia",
"loaded": true
},
{
"id": "f-32",
"age": 47,
"name": "Anna",
"loaded": true
},
{
"id": "f-33",
"age": 38,
"name": "Laura",
"loaded": true
}
],
"links": [
{
"id": "l01",
"from": "m-1",
"to": "f-1",
"type": "friend"
},
{
"id": "l02",
"from": "m-1",
"to": "f-2",
"type": "friend"
},
{
"id": "l03",
"from": "m-1",
"to": "f-3",
"type": "friend"
},
{
"id": "l04",
"from": "m-1",
"to": "f-4",
"type": "friend"
},
{
"id": "l06",
"from": "m-1",
"to": "f-6",
"type": "friend"
},
{
"id": "l07",
"from": "m-2",
"to": "f-2",
"type": "collegue"
},
{
"id": "l12",
"from": "m-3",
"to": "f-10",
"type": "spouse"
},
{
"id": "l13",
"from": "m-3",
"to": "f-5",
"type": "enemy"
},
{
"id": "l14",
"from": "m-3",
"to": "f-8",
"type": "friend"
},
{
"id": "l15",
"from": "m-3",
"to": "f-4",
"type": "friend"
},
{
"id": "l16",
"from": "m-3",
"to": "f-9",
"type": "friend"
},
{
"id": "l17",
"from": "m-4",
"to": "f-15",
"type": "spouse"
},
{
"id": "l18",
"from": "m-4",
"to": "f-14",
"type": "collegue"
},
{
"id": "l22",
"from": "m-5",
"to": "f-15",
"type": "collegue"
},
{
"id": "l23",
"from": "m-5",
"to": "f-4",
"type": "collegue"
},
{
"id": "l27",
"from": "f-11",
"to": "f-15",
"type": "collegue"
},
{
"id": "l28",
"from": "m-5",
"to": "m-6",
"type": "friend"
},
{
"id": "l29",
"from": "m-6",
"to": "m-7",
"type": "friend"
},
{
"id": "l30",
"from": "m-7",
"to": "m-8",
"type": "friend"
},
{
"id": "l31",
"from": "m-8",
"to": "m-9",
"type": "friend"
},
{
"id": "l32",
"from": "m-9",
"to": "m-10",
"type": "friend"
},
{
"id": "l33",
"from": "m-10",
"to": "m-11",
"type": "friend"
},
{
"id": "l34",
"from": "m-11",
"to": "m-12",
"type": "friend"
},
{
"id": "l35",
"from": "m-12",
"to": "m-13",
"type": "friend"
},
{
"id": "l36",
"from": "m-13",
"to": "m-5",
"type": "friend"
},
{
"id": "l101",
"from": "m-7",
"to": "f-25",
"type": "collegue"
},
{
"id": "l102",
"from": "m-7",
"to": "f-26",
"type": "collegue"
},
{
"id": "l103",
"from": "m-9",
"to": "f-26",
"type": "collegue"
},
{
"id": "l104",
"from": "m-9",
"to": "f-25",
"type": "collegue"
},
{
"id": "l105",
"from": "f-25",
"to": "f-26",
"type": "collegue"
},
{
"id": "l106",
"from": "m-7",
"to": "m-9",
"type": "collegue"
},
{
"id": "l107",
"from": "f-26",
"to": "f-28",
"type": "friend"
},
{
"id": "l108",
"from": "f-27",
"to": "f-28",
"type": "friend"
},
{
"id": "l109",
"from": "f-27",
"to": "f-29",
"type": "friend"
},
{
"id": "l110",
"from": "f-10",
"to": "f-29",
"type": "friend"
},
{
"id": "l111",
"from": "f-29",
"to": "f-33",
"type": "friend"
},
{
"id": "l112",
"from": "f-29",
"to": "f-32",
"type": "friend"
},
{
"id": "l113",
"from": "f-29",
"to": "f-31",
"type": "friend"
},
{
"id": "l114",
"from": "f-24",
"to": "f-31",
"type": "friend"
},
{
"id": "l115",
"from": "f-24",
"to": "f-32",
"type": "friend"
},
{
"id": "l116",
"from": "f-24",
"to": "f-33",
"type": "friend"
},
{
"id": "l117",
"from": "f-24",
"to": "f-23",
"type": "friend"
},
{
"id": "l118",
"from": "f-23",
"to": "f-22",
"type": "friend"
},
{
"id": "l119",
"from": "f-22",
"to": "f-21",
"type": "friend"
},
{
"id": "l120",
"from": "f-21",
"to": "f-20",
"type": "friend"
},
{
"id": "l121",
"from": "f-20",
"to": "f-19",
"type": "friend"
},
{
"id": "l122",
"from": "f-19",
"to": "f-18",
"type": "friend"
},
{
"id": "l123",
"from": "f-18",
"to": "f-17",
"type": "friend"
},
{
"id": "l124",
"from": "f-17",
"to": "f-16",
"type": "friend"
},
{
"id": "l125",
"from": "f-16",
"to": "f-30",
"type": "friend"
},
{
"id": "l126",
"from": "f-19",
"to": "f-30",
"type": "friend"
},
{
"id": "l130",
"from": "f-15",
"to": "m-10",
"type": "friend"
},
{
"id": "l131",
"from": "f-23",
"to": "m-4",
"type": "friend"
},
{
"id": "l132",
"from": "f-15",
"to": "m-7",
"type": "friend"
},
{
"id": "l133",
"from": "f-12",
"to": "m-13",
"type": "friend"
},
{
"id": "l134",
"from": "f-21",
"to": "m-12",
"type": "friend"
},
{
"id": "l135",
"from": "f-29",
"to": "m-11",
"type": "friend"
},
{
"id": "l136",
"from": "f-13",
"to": "m-11",
"type": "friend"
},
{
"id": "l137",
"from": "f-13",
"to": "m-7",
"type": "friend"
},
{
"id": "l138",
"from": "f-13",
"to": "m-12",
"type": "friend"
},
{
"id": "l139",
"from": "f-13",
"to": "m-6",
"type": "friend"
},
{
"id": "l140",
"from": "f-17",
"to": "f-9",
"type": "friend"
},
{
"id": "l141",
"from": "f-2",
"to": "m-4",
"type": "collegue"
},
{
"id": "l142",
"from": "f-5",
"to": "m-13",
"type": "friend"
},
{
"id": "l143",
"from": "f-7",
"to": "f-20",
"type": "friend"
}
]
}