Function fill_raw_2dnoise16

src/noise.cpp.hpp:756–785

}

void fill_raw_2dnoise16(fl::u16 *pData, int width, int height, fl::u8 octaves, fl::q88 freq88, fract16 amplitude, int skip, fl::u32 x, fl::i32 scalex, fl::u32 y, fl::i32 scaley, fl::u32 time) {
  if(octaves > 1) {
    fill_raw_2dnoise16(pData, width, height, octaves-1, freq88, amplitude, skip, x *freq88 , scalex *freq88, y * freq88, scaley * freq88, time);
  } else {
    // amplitude is always 255 on the lowest level
    amplitude=65535;
  }

  scalex *= skip;
  scaley *= skip;
  fract16 invamp = 65535-amplitude;
  for(int i = 0; i < height; i+=skip, y+=scaley) {
    fl::u16 *pRow = pData + (i*width);
    for(int j = 0,xx=x; j < width; j+=skip, xx+=scalex) {
      fl::u16 noise_base = inoise16(xx,y,time);
      noise_base = (0x8000 & noise_base) ? noise_base - (32767) : 32767 - noise_base;
      noise_base = scale16(noise_base<<1, amplitude);
      if(skip==1) {
        pRow[j] = scale16(pRow[j],invamp) + noise_base;
      } else {
        for(int ii = i; ii<(i+skip) && ii<height; ++ii) {
          fl::u16 *pRow = pData + (ii*width);
          for(int jj=j; jj<(j+skip) && jj<width; ++jj) {
            pRow[jj] = scale16(pRow[jj],invamp) + noise_base;
          }
        }
      }
    }
  }
}

/// Unused
/// @todo Remove?