DEMO访问地址:bupt-hjm.github.io/BoomGo/
插件及使用方法地址: github.com/BUPT-HJM/Bo…
动画:
2.Canvas API
1.参考JQuery,支持链式调用
(function(window, undefined) {
boom.prototype.init.prototype = boom.prototype;
window.boom = boom;
})(window)
2.Canvas API getImageData
对图像颜色采样
* 获取canvas像素值,构造colors数组 * @param ctx 绘图上下文 * @param canvas canvas元素 * @return colors colors数组 */
function initColors(ctx, canvas) {
var colors = [];
var imagedata = ctx.getImageData(0, 0, canvas.width, canvas.height);
var data = imagedata.data;
for (var x = 0; x < canvas.width; x++) {
for (var y = 0; y < canvas.height; y++) {
var i = ((y * canvas.width) + x) * 4;
var r = data[i];
var g = data[i + 1];
var b = data[i + 2];
var a = data[i + 3];
var color = {
r: r,
g: g,
b: b,
a: a
}
colors.push(color);
}
}
return colors;
}
3.支持自定义爆炸参数
var argOptions = {
'radius': 10,
'minVx': -30,
'maxVx': 30,
'minVy': -50,
'maxVy': 50,
'edgeOpacity': false
}
var argOptions = {
'radius': 10,
'minVx': -30,
'maxVx': 30,
'minVy': -50,
'maxVy': 50,
'edgeOpacity': false
}
boom("canvas1","imgs/test1.jpg",argOptions).go(3000);
更多东西由你发现
初学canvas,欢迎follow和star,pull request,提出您的宝贵意见 github地址: github.com/BUPT-HJM/Bo…
感谢
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