Method concatMatrix

src/text/text-state.ts:234–237

* Modify current transformation matrix (cm operator). * Prepends the given matrix to the CTM.

(a: number, b: number, c: number, d: number, e: number, f: number)

   * Prepends the given matrix to the CTM.
   */
  concatMatrix(a: number, b: number, c: number, d: number, e: number, f: number): void {
    const newMatrix = new Matrix(a, b, c, d, e, f);
    this.ctm = newMatrix.multiply(this.ctm);
  }

  /**
   * Calculate the bounding box for a character at the current position.