Created
July 19, 2019 11:36
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <style> | |
| .circle:hover { | |
| /* calculate using: (2 * PI * R) */ | |
| stroke-dasharray: 227; | |
| stroke-dashoffset: 0; | |
| animation-iteration-count: infinite; | |
| animation-name: rotate; | |
| animation-duration: 2s; | |
| animation-direction: alternate; | |
| animation-timing-function: linear; | |
| } | |
| @keyframes rotate { | |
| to { | |
| stroke-dashoffset: 227; | |
| } | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg width="960" height="500" style="border:1px solid red;"></svg> | |
| <script src="https://d3js.org/d3.v5.js"></script> | |
| <script> | |
| let log = console.log | |
| let isStartedToDraw = false | |
| let pointStart = document.querySelector("svg").createSVGPoint() | |
| let pointStop = document.querySelector("svg").createSVGPoint() | |
| var svg = d3.select("svg"); | |
| svg | |
| .on("mousedown", function () { | |
| log('basildi: ', pointStart, isStartedToDraw) | |
| isStartedToDraw = true | |
| pointStart.x = event.x | |
| pointStart.y = event.y | |
| svg.append("line") | |
| .attr("x1", pointStart.x) | |
| .attr("y1", pointStart.y) | |
| .attr("stroke", "black") | |
| }) | |
| .on("mousemove", function () { | |
| if (isStartedToDraw) { | |
| pointStop.x = event.x | |
| pointStop.y = event.y | |
| //log('sürükleniyor: ', pointStop) | |
| svg.select("line") | |
| .attr("x2", pointStop.x) | |
| .attr("y2", pointStop.y) | |
| } | |
| }) | |
| .on("mouseup", function () { | |
| if (isStartedToDraw) { | |
| pointStop.x = event.x | |
| pointStop.y = event.y | |
| log('birakildi: ', pointStop) | |
| svg.select("line") | |
| .attr("x2", pointStop.x) | |
| .attr("y2", pointStop.y) | |
| isStartedToDraw = false | |
| } | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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