射影変換 (Homography) - jsdo.it - Share JavaScript, HTML5 and CSSvar IMG_URL = 'http://jsrun.it/assets/4/W/u/U/4WuUH.png', SPACE = 10, SRC_WIDTH = 295, SRC_HEIGHT = 295, DST_WIDTH = 465 - SRC_WIDTH - SPACE * 3, DST_HEIGHT = 465 - SRC_HEIGHT - SPACE * 3; var img, canvas, context, points, srcImageData, draggingPoint = null; window.addEventListener('DOMContentLoaded', function() { canvas = document.getElementById('c'); context = canvas.getContext('2d'); srcBounds
