You are right Larry. Having a second look on things, it seems I forced myself into some OO design. It is still early to bother with design at this point. I will keep it simple now and have just one function for over and additional helper static methods.
Anyway, about the functions you talked about yesterday over_impl, over_impl_R and over_impl_RA, for handling all internal pixel data types. I am trying to deal with all types in the enum BASETYPE for TypeDesc: http://pastebin.com/9trn5sNn I don't know how to handle these types: 1. TypeDesc::UNKNOWN 2. TypeDesc::NONE 3. TypeDesc::HALF 4. TypeDesc::STRING // std::string or char* ? 5. TypeDesc::PTR 6. TypeDesc::LASTBASE Stefan
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