我试图绘制图像到画布上,像这样: var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
var img=document.getElementById("scream");
ctx.drawImage(img,0,0,100,100,0,0,200,200);
画布是由200像素和200像素的图像要大
我正在做一些HTML5 Canvas测试。我试图绘制使用for循环在画布图像的阵列: var blocks=["dirt","cactus","carvedSandstone","crackedStoneBrick","diamondOre","furnace","goldOre","grass","lapisOre","leaves","log1","sand","stone","stoneBr
我有一个函数,它可以接受图像并调整它的大小以适合画布,同时保持其纵横比。此代码只能从这个答案代码的minorly修改后的版本:c# Image resizing to different size while preserving aspect ratio 在这个例子中,我的画布高度是642,我的画布宽度为823 当我运行下面的功能,线路 graphic.DrawImage(image, posX