*/
for (i = 0; i < w*h; i++)
if (sqdata[i].valid) {
- sqdata[i].cx = sqdata[i].minx + sqdata[i].maxx + 1;
- sqdata[i].cy = sqdata[i].miny + sqdata[i].maxy + 1;
+ int cx, cy;
+ cx = sqdata[i].cx = sqdata[i].minx + sqdata[i].maxx + 1;
+ cy = sqdata[i].cy = sqdata[i].miny + sqdata[i].maxy + 1;
if (!(SPACE(state, sqdata[i].cx, sqdata[i].cy).flags & F_DOT))
sqdata[i].valid = FALSE; /* no dot at centre of symmetry */
+ if (dsf_canonify(dsf, (cy-1)/2*w+(cx-1)/2) != i ||
+ dsf_canonify(dsf, (cy)/2*w+(cx-1)/2) != i ||
+ dsf_canonify(dsf, (cy-1)/2*w+(cx)/2) != i ||
+ dsf_canonify(dsf, (cy)/2*w+(cx)/2) != i)
+ sqdata[i].valid = FALSE; /* dot at cx,cy isn't ours */
if (SPACE(state, sqdata[i].cx, sqdata[i].cy).flags & F_DOT_BLACK)
sqdata[i].colour = 2;
else