mtext.rotation, always in radians?

[joantopo]

Hi.

I am creating new mtext and I have to define the rotation properly for each one.

Which units is for rotation property?

I think that it is in radians.

Can I convert gradians to radians (with my conversor function) if some gradians is negative?

Or it must be from 0 to 400g to convert to radian?

If I change units drawing from Autocad or programming, I get always the same rotation in the drawing.

int intAUnit = db.Aunits;    

                //sentido horario
bool intAngDir = db.Angdir;   // si es true está activado el sentido horario.

double angulo = db.Angbase;  //para indicar si es al este ,oeste,norte,etc..

Thanks.

[hgasty1001]

Hi,

To my knowledge, all angular information in the Autocad .NET API use radians, and all rotations are specified in radians, no matter the units settings in Autocad, a program must use radians in the code.

Gaston Nunez

[joantopo]

Ok.

And the origin direction, what is it in API for angles?  Direction West in clockwise?

Thanks for your answer.

[norman.yuan]

You need to examine system variables "ANGBASE" and "ANGDIR".

[joantopo · Accepted solution]

OK.

I copy both system vars in my own vars.

  
                 SentidoHorario = db.Angdir; //clockwise
                  direccionAngular = db.Angbase; //angle direction


SentidoHorario = false; 
                  direccionAngular = System.Math.PI / 2;  

                  double orientaciónTexto =0;    //in radians
                  if (checkBox_TextoOrientado.Checked == true)
                  {
                  orientaciónTexto = Math.PI / 2 - OPERACIONES.Operacions.gradrad(acimutAlin);
                  }

 and before of ending, return the values of vars:

     db.Angdir = SentidoHorario;
              db.Angbase = direccionAngular;

P.S: acimutAlin is in gradian degrees, so I convert them to radians. "AcimutAlin" is from North Azimuth.  (oriented text will be orthogonal from azimut)

Thanks guys!