view.arc

arc

Angle that gives the horizontal field of view. It's default value of 60 degrees corresponds to the human eye. By decreasing this angle you'll get a telescope effect.

Range

-180 .. 180 (default: 60)

Type:

var

Remarks:

If the arc has a negative value, the view is horizontally flipped. This way rear view mirrors can be realized.
For ISOMETRIC views, the arc defines the view volume in quants by the formula size = view.size * tan(view.arc/2). For an arc of 90 degrees, the width of the view volume is equal to the view width in pixels.

Example:

function sniper()
 {
   while(1)
   {
     if(mouse_right) // right mouse button pressed
     {
       camera.arc = max(camera.arc - time_step, 30);	 // reduce fiel of view
     }
     else
     {
       camera.arc = min(camera.arc + time_step, 90);    // increase fiel of view
     }
     wait(1);
   } 
 }

See also:

VIEW, view.aspect, view.flags

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