Field Samplers

////////////////////////////////////////////////////////
// sampler-variations
// Different ways of sampling the same source field.
////////////////////////////////////////////////////////

&dim = (16,16,1);

&spc = 0.55;
&time = mlt(step, 0.06125);

// initialize a source field with random values
#src {
   dim = &dim;
   set = rand(1,2,3); 
}

// sample #src while varying the X lookup coordinate
#A {
   dim = &dim;
   run = #src(&time, 0);
}

// sample #src while varying the Y lookup coordinate
#B {
   dim = &dim;
   run = #src(0, &time);
}

// sample #src through a spatial mask (x)
#C {
   dim = &dim;
   run =
   mlt(
      #src,
      sml(dst(C.x, cos(&time)), 0.125)
   );
}

#D {
   dim = &dim;
   run =
   mlt(
      #src,
      sml(
         dst(C.xyz, 0.0),
         abs(sin(mlt(step, 0.01)))
      )
   );
}

// add two fields together 
#E{
   dim = &dim;
   set = #src;
   run = add(#C, #D);
}

////////////////////////////////////////
// FORMATIONS 

// ~src {
//    col = #src;
//    pos = (0, &spc, 0);
//    scl = (0.25);
// }

~src {
   col = #src;
   pos = (-&spc, mlt(&spc,.5), 0);
   scl = (0.25);
}

~A {
   col = #A;
   pos = (0, mlt(&spc,.5), 0);
   scl = (0.25);
}

~B {
   col = #B;
   pos = (&spc, mlt(&spc,.5), 0);
   scl = (0.25);
}

~C {
   col = #C;
   pos = (-&spc, mlt(&spc,-.5), 0);
   scl = (0.25);
}

~D {
   col = #D;
   pos = (0, mlt(&spc,-.5), 0);
   scl = (0.25);
}

~E {
   col = #E;
   pos = (&spc, mlt(&spc,-.5), 0);
   scl = (0.25);
}