Method dotProduct

src/scripting/api/Display/Matrix.ts:173–186

(a:Array<number>, b:Array<number>)

    }

    private dotProduct(a:Array<number>, b:Array<number>):Array<number> {
      if (a.length !== 16 || b.length !== 16) {
        throw new Error('Matrix3D dot product expects a 4xr Matrix3D');
      }
      var res:Array<number> = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
      for (var i = 0; i < 4; i++) {
        for (var j = 0; j < 4; j++) {
          for (var k = 0; k < 4; k++) {
            res[i * 4 + j] += a[i * 4 + k] * b[k * 4 + j];
          }
        }
      }
      return res;
    }

    private rotationMatrix(angle:number, axis:Vector3D):Array<number> {
      var sT:number = Math.sin(angle), cT:number = Math.cos(angle);