Method mul

src/common/overlay/levelRenderer/Matrix.js:80–88

* @function LevelRenderer.Tool.Matrix.prototype.mul * @description 矩阵相乘。 * @param {(Float32Array|Array. )} out - 单位矩阵。 * @param {(Float32Array|Array. )} m1 - 矩阵m1。 * @param {(Float32Array|Array. )} m2- 矩阵m2。 * @returns {(Float32Array|Array. )} 结果矩

(out, m1, m2)

     * @returns {(Float32Array|Array.<number>)} 结果矩阵。
     */
    mul(out, m1, m2) {
        out[0] = m1[0] * m2[0] + m1[2] * m2[1];
        out[1] = m1[1] * m2[0] + m1[3] * m2[1];
        out[2] = m1[0] * m2[2] + m1[2] * m2[3];
        out[3] = m1[1] * m2[2] + m1[3] * m2[3];
        out[4] = m1[0] * m2[4] + m1[2] * m2[5] + m1[4];
        out[5] = m1[1] * m2[4] + m1[3] * m2[5] + m1[5];
        return out;
    }

    /**
     * @function LevelRenderer.Tool.Matrix.prototype.mul