static double getValue(SparseMat& M, const int* idx, RNG& rng)
{
int d = M.dims();
size_t hv = 0, *phv = 0;
if( (unsigned)rng % 2 )
{
hv = d == 2 ? M.hash(idx[0], idx[1]) :
d == 3 ? M.hash(idx[0], idx[1], idx[2]) : M.hash(idx);
phv = &hv;
}
const uchar* ptr = d == 2 ? M.ptr(idx[0], idx[1], false, phv) :
d == 3 ? M.ptr(idx[0], idx[1], idx[2], false, phv) :
M.ptr(idx, false, phv);
return !ptr ? 0 : M.type() == CV_32F ? *(float*)ptr : M.type() == CV_64F ? *(double*)ptr : 0;
}
static void setValue(SparseMat& M, const int* idx, double value, RNG& rng)
{
int d = M.dims();
size_t hv = 0, *phv = 0;
if( (unsigned)rng % 2 )
{
hv = d == 2 ? M.hash(idx[0], idx[1]) :
d == 3 ? M.hash(idx[0], idx[1], idx[2]) : M.hash(idx);
phv = &hv;
}
uchar* ptr = d == 2 ? M.ptr(idx[0], idx[1], true, phv) :
d == 3 ? M.ptr(idx[0], idx[1], idx[2], true, phv) :
M.ptr(idx, true, phv);
if( M.type() == CV_32F )
*(float*)ptr = (float)value;
else if( M.type() == CV_64F )
*(double*)ptr = value;
else
CV_Error(CV_StsUnsupportedFormat, "");
}