js核心代码
代码如下:
标签id
*imageid:html img 标签id
*gridcountX:x轴图片分割个数
*gridcountY:y轴图片分割个数
*gridspace:宫格空隙
*offsetX：x*y宫格相对canvas（0，0）X坐标偏移量
**offsetX：x*y宫格相对canvas（0，0）Y坐标偏移量
*isanimat：是否启用动画显示
*/
function ImageGrid(canvasid,imageid,gridcountX,gridcountY,gridspace,offsetX,offsetY,isanimat) {
var image = new Image();
var g = document.getElementById(canvasid).getContext("2d");
var img=document.getElementById(imageid);
image.src=img.getAttribute("src");
g.drawImage(image,0);
var imagedata = g.getImageData(0,image.width,image.height);
var grid_width = imagedata.width / gridcountX;
var grid_height = imagedata.height / gridcountY;
//动画
if (isanimat) {
var x = 0,
y = 0;
var inter = setInterval(function() {
g.putImageData(imagedata,gridspace * x + offsetX,gridspace * y + offsetY,grid_width * x,grid_height * y,grid_width,grid_height);
x < gridcountX ? x++ : x = 0;
if (x == 0) {
y < gridcountY ? y++ : y = 0;
}
},200);
y == gridcountY ? clearInterval(inter) : null;
} else { //非动画
for (var y = 0; y < gridcountY; y++) {
for (var x = 0; x < gridcountX; x++) {
g.putImageData(imagedata,grid_height);
}
}
}
}
代码如下:
