multiplyScalarAndAdd(b, scale)
    {
        this.a += (b.a * scale);
        this.b += (b.b * scale);
        this.c += (b.c * scale);
        this.d += (b.d * scale);
        this.tx += (b.tx * scale);
        this.ty += (b.ty * scale);

        return this;
    }
/**
     * Scales each component of the passed matrix by the given scalar, then adds the result
     * to each respective component of this matrix.
     *
     * @param {Matrix2d} b - the matrix to scale before adding into this matrix.
     * @param {number} scale - the amount to scale b's elements by before adding.
     * @return {Matrix2d} returns itself.
     */
Scales each component of the passed matrix by the given scalar, then adds the result
to each respective component of this matrix.

@param {Matrix2d} b - the matrix to scale before adding into this matrix.
@param {number} scale - the amount to scale b's elements by before adding.
@return {Matrix2d} returns itself.
Scales each component of the passed matrix by the given scalar then adds the result to each respective component of this matrix . @param { Matrix2d } b - the matrix to scale before adding into this matrix . @param { number } scale - the amount to scale b ' s elements by before adding . @return { Matrix2d } returns itself .
multiplyScalarAndAdd(b, scale)
    {
        this.a += (b.a * scale);
        this.b += (b.b * scale);
        this.c += (b.c * scale);
        this.d += (b.d * scale);
        this.tx += (b.tx * scale);
        this.ty += (b.ty * scale);
        return this;
    }
multiplyScalarAndAdd ( b , scale ) { this . a += ( b . a * scale ) ; this . b += ( b . b * scale ) ; this . c += ( b . c * scale ) ; this . d += ( b . d * scale ) ; this . tx += ( b . tx * scale ) ; this . ty += ( b . ty * scale ) ; return this ; }
Scales each component of the passed matrix by the given scalar, then adds the result
 to each respective component of this matrix.
Scales each component of the passed matrix by the given scalar then adds the result to each respective component of this matrix .