clay-core/src/Matrix4/rotate.js

Provide a more friendly web-side drawing interface!

// 围绕0Z轴旋转
// 其它的旋转可以借助transform实现
// 旋转角度单位采用弧度制
var _rotate = function (deg) {
    var sin = Math.sin(deg),
        cos = Math.cos(deg);
    return [
        cos, sin, 0, 0,
        -sin, cos, 0, 0,
        0, 0, 1, 0,
        0, 0, 0, 1
    ];
};