Function applyTransform

libs/echarts/echarts.simple.js:1118–1124

* 矩阵左乘向量 * @param {Vector2} out * @param {Vector2} v * @param {Vector2} m

(out, v, m)

 * @param {Vector2} m
 */
function applyTransform(out, v, m) {
    var x = v[0];
    var y = v[1];
    out[0] = m[0] * x + m[2] * y + m[4];
    out[1] = m[1] * x + m[3] * y + m[5];
    return out;
}

/**
 * 求两个向量最小值