基本信息
源码名称:上下扫描线(canvas2d 示例)
源码大小:1.36KB
文件格式:.html
开发语言:CSS
更新时间:2019-05-28
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源码介绍
canvas2d.lineWidth = 2;
var add = 1;
function saomiao()
{
canvas2d.clearRect(0,0,c_w,c_h);
canvas2d.fillStyle = "white";
canvas2d.fillRect(0,0,c_w,c_h);
canvas2d.strokeStyle = "black";
canvas2d.beginPath();
canvas2d.moveTo(0,be_y);
canvas2d.lineTo(c_w,be_y);
be_y = add;
canvas2d.stroke();
if(be_y == c_h)
add = 0 - add;
if(be_y == 0)
add = Math.abs(add);
var be_y = 1;
canvas2d.lineWidth = 2;
var add = 1;
function saomiao()
{
canvas2d.clearRect(0,0,c_w,c_h);
canvas2d.fillStyle = "white";
canvas2d.fillRect(0,0,c_w,c_h);
canvas2d.strokeStyle = "black";
canvas2d.beginPath();
canvas2d.moveTo(0,be_y);
canvas2d.lineTo(c_w,be_y);
be_y = add;
canvas2d.stroke();
if(be_y == c_h)
add = 0 - add;
if(be_y == 0)
add = Math.abs(add);