Difference between revisions of "User:Toady Nakamura/Touch Toggle Rotate"

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m (some readability improvements)
m (Undo revision 1173348 by Kireji Haiku (Talk) Your version no longer matches the student notes inworld.)
Line 4: Line 4:


<lsl>
<lsl>
integer spinning;// = FALSE;
integer spinning = FALSE;
 
default
default
{
{
     touch_start(integer num_detected)
     touch_start(integer total_number)
     {
     {
    //  toggle between TRUE (1) and FALSE (0)
         if(!spinning) // if not presently spinning
        spinning = !spinning;
         {
 
             llTargetOmega(<0.0, 0.0, 1.0>, -PI_BY_TWO, -0.01); //start spinning
         if (spinning)// is on turn it off
            spinning = TRUE; // remember that spinning is now true
            llTargetOmega(ZERO_VECTOR, (float)FALSE, (float)FALSE);
        }
 
        else  // if presently spinning
         else// turn it back on
        {
             llTargetOmega(<0.0, 0.0, 1.0>, -PI_BY_TWO, -0.01);
            llTargetOmega(ZERO_VECTOR, 0, 0);  // stop spin
            spinning = FALSE; // remember that spinning is now false
        }
     }
     }
}
}
</lsl>
</lsl>


Revision as of 10:10, 4 November 2012

Make a cylinder that looks like a record or a CD.

Place this script inside...

<lsl> integer spinning = FALSE; default { 

   touch_start(integer total_number)
   {
       if(!spinning)  // if not presently spinning
       {
           llTargetOmega(<0.0, 0.0, 1.0>, -PI_BY_TWO, -0.01); //start spinning
           spinning = TRUE; // remember that spinning is now true
       }
       else  // if presently spinning
       {
           llTargetOmega(ZERO_VECTOR, 0, 0);  // stop spin
           spinning = FALSE; // remember that spinning is now false
       }
   }

}

</lsl>


How llTargetOmega works...

  • for the function that reads: llTargetOmega(<0.0, 1.0, 0.0>, TWO_PI, 1);
  • The first parameter is axis of rotation expressed as a vector (<0,1,0>) which will rotate the prim on the Y axis
  • To change the axis to x <1,0,0>... to change it to z <0,0,1> and to reverse direction <-1,0,0>, <0,-1,0>, <0,0,-1>

The second parameter is the rate of rotation in radians per second.

  • PI_BY_TWO (slow counterclockwise), -PI_BY_TWO (slow clockwise)
  • PI (counterclockwise) or -PI (clockwise)
  • TWO_PI (counterclockwise) or -TWO_PI (clockwise)

The third parameter is the gain. (should not equal zero - subtle effect)

script written 02-22-08 inspired by Torley's record player--Toady Nakamura 11:40, 14 May 2012 (PDT)

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