Published
Edited
Jul 17, 2019
md`# Another Design`
width = 1000
height = 1000
viewof c1 = color({
value: "#E19D18",
title: "Circle Color",
description: "Switch colors for the nodes in the graph below"
})
nightlights2 = {
const numberOfNodes = 30
const maxRadius = 120
const context = DOM.context2d(width, height);
context.fillStyle = "black";
var w = width; var h = height;
context.fillRect(0, 0, w, h);
var nodes = [];
for (var i = 0; i < numberOfNodes; i++) {
nodes.push({
value:0,
index:i,
x:100,
y:200,
r:Math.floor((Math.random() * maxRadius) + 1),
text: ""
})
}
const textRadius = 200
nodes.push({text:"Digital Fluency",r:textRadius,x:100,y:200})
nodes.push({text:"Data Visualization",r:textRadius,x:100,y:200})
nodes.push({text:"Ethics",r:textRadius,x:100,y:200})
nodes.push({text:"Code Competency",r:textRadius,x:100,y:200})
nodes.push({text:"Teaching and Learning",r:textRadius,x:100,y:200})
nodes.push({text:"Diversity and Inclusion",r:textRadius,x:100,y:200})
nodes.push({text:"Communications and Storytelling",r:textRadius,x:100,y:200})
nodes.push({text:"Data Curation",r:textRadius,x:100,y:200})
nodes.push({text:"Design Thinking",r:textRadius,x:100,y:200})
const lightWidth = d3.max(nodes,d=>d.r)*1;
context.globalCompositeOperation = "lighter"
nodes.forEach(function(d,i) {
context.fillStyle = createGradientWithOuterRadius([d.x,d.y],1,1,context,c1);
context.fillRect((d.x-lightWidth),(d.y-lightWidth),(d.x+lightWidth),(d.y+lightWidth));
})
var simulation = d3.forceSimulation()
.force("x", d3.forceX(w/2).strength(.5))
.force("y", d3.forceY(h / 2).strength(.5))
.force("charge", d3.forceManyBody().strength(function(d) { return -500; }))
.force("collide", d3.forceCollide(d=>d.r*.45).strength(.1));
simulation
.nodes(nodes)
.on("tick", ticked);
d3.select(context.canvas)
.call(d3.drag()
.container(context.canvas)
.subject(dragsubject)
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
function ticked() {
context.clearRect(0, 0, width, height);
context.fillStyle = "black";
context.fillRect(0, 0, w, h);
nodes.forEach(function(d,i) {
context.fillStyle = createGradientWithOuterRadius([d.x,d.y],d.r,.7,context,c1);
context.fillRect((d.x-lightWidth),(d.y-lightWidth),(d.x+lightWidth),(d.y+lightWidth));
context.fillStyle = createGradientWithOuterRadius([d.x,d.y],d.r,1,context,"white")
context.font = "30px Arial";
if (d.x<0) console.log(d.x);
var txt = d.text.split(" ")
for (var j = 0; j < txt.length; j++) {
//console.log(context.measureText(txt[j]).width)
context.fillText(txt[j], d.x-(context.measureText(txt[j]).width/2),d.y+(j*25))
}
})
}
function createGradientWithOuterRadius(center,radius,bright,context,cl) {
var radgrad = context.createRadialGradient(center[0],center[1],radius/4,center[0],center[1],radius);
var color = d3.color(cl)
radgrad.addColorStop(0, 'rgba('+color.r+','+color.g+','+color.b+','+bright+')');
radgrad.addColorStop(1, 'rgba(0,0,0,0)');
return radgrad;
}
function dragsubject() {
return simulation.find(d3.event.x, d3.event.y);
}
function dragstarted() {
if (!d3.event.active) simulation.alphaTarget(.1).restart();
d3.event.subject.fx = d3.event.subject.x;
d3.event.subject.fy = d3.event.subject.y;
}
function dragged() {
d3.event.subject.fx = d3.event.x;
d3.event.subject.fy = d3.event.y;
}
function dragended() {
if (!d3.event.active) simulation.alphaTarget(0);
d3.event.subject.fx = null;
d3.event.subject.fy = null;
}
context.restore();
return context.canvas;
}
import {color,slider} from "@jashkenas/inputs"
d3 = require("d3@5","d3-color")
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