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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <link href='https://fonts.googleapis.com/css?family=Lato:300,900' rel='stylesheet' type='text/css'> | |
| <style> | |
| body{ | |
| background-color: whitesmoke; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <canvas width="1660" height="1400"></canvas> | |
| <script src="https://d3js.org/d3.v4.js"></script> | |
| <script> | |
| const width = 1660, | |
| height = 1400, | |
| radius = 28, | |
| spacing = radius*4, | |
| rows = 100; | |
| const canvas = document.querySelector("canvas"), | |
| context = canvas.getContext("2d"); | |
| context.globalCompositeOperation = "multiply" | |
| let movement = radius/2; | |
| let direction = 1; | |
| const drawCircle = (d, i, movement ) => { | |
| if (d.juices === "Y"){ | |
| context.fillStyle = "rgba(0, 255, 255, 0.8)" //blue | |
| context.beginPath(); | |
| context.ellipse(20 + spacing * (i % rows), 20 + spacing * Math.floor(i/rows) - movement, radius, radius, 45 * Math.PI/180, 0, 2 * Math.PI); | |
| context.fill() | |
| } | |
| if (d.cheese === "Y"){ | |
| context.fillStyle = "rgba(245, 245, 0, 0.8)" //yellow | |
| context.beginPath(); | |
| context.ellipse(20 + spacing * (i % rows) - movement, 20 + spacing * Math.floor(i/rows), radius, radius, 45 * Math.PI/180, 0, 2 * Math.PI); | |
| context.fill() | |
| } | |
| if (d.bakedgoods === "Y"){ | |
| context.fillStyle = "rgba(255, 0, 255, 0.8)" //pink | |
| context.beginPath(); | |
| context.ellipse(20 + spacing * (i % rows) + movement, 20 + spacing * Math.floor(i/rows), radius, radius, 45 * Math.PI/180, 0, 2 * Math.PI); | |
| context.fill() | |
| } | |
| if (d.cheese === "N" && d.juices === "N" && d.bakedgoods === "N") { | |
| context.beginPath(); | |
| context.strokeStyle = "grey" | |
| context.ellipse(20 + spacing * (i % rows), 20 + spacing * Math.floor(i/rows), radius, radius, 45 * Math.PI/180, 0, 2 * Math.PI); | |
| context.stroke() | |
| } | |
| } | |
| const draw = (data) => { | |
| context.clearRect(0,0,width,height); | |
| data.forEach((d, i) => drawCircle(d, i, Math.floor(movement)) ) | |
| window.requestAnimationFrame(draw.bind(null, data)) | |
| if (movement > radius){ | |
| direction = -1 | |
| } else if (movement < radius/2){ | |
| direction = 1 | |
| } | |
| movement += .5*direction | |
| } | |
| d3.json('https://gist.githubusercontent.com/susielu/3d194b8660ec6ab214a3/raw/38a2cdc96efaaaeb4849c86b600de5dfecea2dec/farmers-markets-lat-long.json', (error, data) => { | |
| draw(data) | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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