Created
November 3, 2017 14:10
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="js/paper.js"></script> | |
| <script type="text/javascript"> | |
| //plane flying behind the mouse pointer | |
| paper.install(window); | |
| function lerp(v0, v1, t) { | |
| return (1 - t) * v0 + t * v1; | |
| } | |
| function atan2(x1, y1, x2, y2) { | |
| var m = (y2-y1) / (x2-x1); | |
| var angleDeg = Math.floor(Math.atan2(y2-y1, x2 -x1) * 180 / Math.PI); | |
| return angleDeg; | |
| } | |
| window.onload = function() { | |
| var tool = new Tool(); | |
| var position = new Point(); | |
| var target = new Point(); | |
| var canvas = document.getElementById('myCanvas'); | |
| var rotation = 270; | |
| paper.setup(canvas); | |
| position.x = canvas.width / 2; | |
| position.y = canvas.height / 2; | |
| target = position; | |
| var path = new Raster('plane'); | |
| path.strokeColor = 'black'; | |
| view.onFrame = function(event) { | |
| var oldX = path.position.x; | |
| var oldY = path.position.y; | |
| path.position.x = lerp(path.position.x, target.x, event.delta * 5); | |
| path.position.y = lerp(path.position.y, target.y, event.delta * 5); | |
| lastRot = rotation; | |
| var newRot = atan2(path.position.x, path.position.y, target.x, target.y); | |
| console.log(lastRot + " "+newRot); | |
| angle = newRot - lastRot; | |
| rotation += angle; | |
| path.rotate(angle); | |
| } | |
| tool.onMouseDown = function(event) { | |
| target = event.point; | |
| } | |
| tool.onMouseDrag = function(event) { | |
| target = event.point; | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <canvas id="myCanvas" resize></canvas> | |
| <img id="plane" src="images/plane.png" style="display:none;"/> | |
| </body> | |
| </html> |
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