<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> <html> <head> <script src="../js/resources/js-test-pre.js"></script> </head> <body> <canvas id="canvas" width="100" height="100"></canvas> <script> description("Bug 105650: Test correct rendering of quadratic and bezier curves with coincident endpoints"); var ctx = document.getElementById('canvas').getContext('2d'); var data; function shouldBeYellow(x,y) { blue_value = ctx.getImageData(x, y, 1, 1).data[2]; shouldBe("blue_value", "0"); } function shouldBeBlue(x,y) { blue_value = ctx.getImageData(x, y, 1, 1).data[2]; shouldBe("blue_value", "255"); } ctx.fillStyle = '#00f'; ctx.strokeStyle = '#ff0'; ctx.lineWidth = 30; ctx.beginPath(); ctx.fillRect(0,0,100,100); // quadratic with coincident endpoint ctx.moveTo(20,20); //Next line should be close to ctx.bezierCurveTo(81,80,80,80,20,20); ctx.quadraticCurveTo(110,110,20,20); shouldBeBlue(70,70); ctx.stroke(); shouldBeYellow(70,70); </script> </body> </html>