int findBitmapInRect(MMBitmapRef needle,
MMBitmapRef haystack,
MMPoint *point,
MMRect rect,
float tolerance)
{
UTHashTable badShiftTable;
int ret;
initBadShiftTable(&badShiftTable, needle);
ret = findBitmapInRectAt(needle, haystack, point, rect,
tolerance, MMPointZero, &badShiftTable);
destroyBadShiftTable(&badShiftTable);
return ret;
}
size_t countOfBitmapInRect(MMBitmapRef needle, MMBitmapRef haystack,
MMRect rect, float tolerance)
{
size_t count = 0;
MMPoint point = MMPointZero;
UTHashTable badShiftTable;
initBadShiftTable(&badShiftTable, needle);
while (findBitmapInRectAt(needle, haystack, &point, rect,
tolerance, point, &badShiftTable) == 0) {
const size_t scanWidth = (haystack->width - needle->width) + 1;
++count;
ITER_NEXT_POINT(point, scanWidth, 0);
}
destroyBadShiftTable(&badShiftTable);
return count;
}
MMPointArrayRef findAllBitmapInRect(MMBitmapRef needle, MMBitmapRef haystack,
MMRect rect, float tolerance)
{
MMPointArrayRef pointArray = createMMPointArray(0);
MMPoint point = MMPointZero;
UTHashTable badShiftTable;
initBadShiftTable(&badShiftTable, needle);
while (findBitmapInRectAt(needle, haystack, &point, rect,
tolerance, point, &badShiftTable) == 0) {
const size_t scanWidth = (haystack->width - needle->width) + 1;
MMPointArrayAppendPoint(pointArray, point);
ITER_NEXT_POINT(point, scanWidth, 0);
}
destroyBadShiftTable(&badShiftTable);
return pointArray;
}