int WangTilesProcessor::TileMismatch(const TilePack & tiles,
const Pyramid & input)
{
int result = -1;
for(int lev = 0; lev < input.NumLevels(); lev++)
{
if(TileMismatch(tiles, input[lev]))
{
result = lev;
break;
}
}
return result;
}
int WangTilesProcessor::BoxSanitize(const TilePack & tiles,
const Pyramid & input,
Pyramid & output,
const int do_corner)
{
// initialize output size
output = input;
// sanitize each level, from high resolution to low resolution
for(int level = 0; level < input.NumLevels(); level++)
{
Array3D<Pixel> & level_now = output[level];
if(level > 0)
{
const Array3D<Pixel> & level_up = output[level-1];
// perform initial box filtering + down-sampling from previous level
for(int row = 0; row < level_now.Size(0); row++)
for(int col = 0; col < level_now.Size(1); col++)
for(int cha = 0; cha < level_now.Size(2); cha++)
{
Pixel temp = 0;
for(int i = 2*row; i <= 2*row+1; i++)
for(int j = 2*col; j <= 2*col+1; j++)
{
const int row_up = i%level_up.Size(0);
const int col_up = j%level_up.Size(1);
temp += level_up[row_up][col_up][cha];
}
level_now[row][col][cha] = temp/4.0;
}
}
if(!SanitizeEdges(tiles, level_now, level_now)) return 0;
if(do_corner && !SanitizeCorners(tiles, level_now, level_now)) return 0;
}
// done
return 1;
}