export function isFunction (func) {
|
return (typeof func === 'function' || Object.prototype.toString.call(func) === '[object Function]')
|
}
|
|
// 生成随机字符串, e表示长度
|
export function randomString(e) {
|
e = e || 32;
|
var t = "ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678",
|
a = t.length,
|
n = "";
|
for (let i = 0; i < e; i++) n += t.charAt(Math.floor(Math.random() * a));
|
return n
|
}
|
|
export function snapToGrid (grid, pendingX, pendingY, scale = 1) {
|
const x = Math.round((pendingX / scale) / grid[0]) * grid[0]
|
const y = Math.round((pendingY / scale) / grid[1]) * grid[1]
|
|
return [x, y]
|
}
|
|
export function getSize (el) {
|
const rect = el.getBoundingClientRect()
|
|
return [
|
parseInt(rect.width),
|
parseInt(rect.height)
|
]
|
}
|
|
export function restrictToBounds (value, min, max) {
|
if (min !== null && value < min) {
|
return min
|
}
|
|
if (max !== null && max < value) {
|
return max
|
}
|
|
return value
|
}
|
