103 lines
2.6 KiB
C++
103 lines
2.6 KiB
C++
namespace dk {
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namespace implem {
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template <size_t D>
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inline size_t get_index_from_pos (const Vector<CoordinateScalarType, D>& parPos, const Vector<CoordinateScalarType, D>& parSize) {
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size_t index = 0;
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for (size_t d = 0; d < D; ++d) {
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size_t pos = static_cast<size_t>(parPos[D - 1 - d]);
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for (size_t p = 0; p < D - 1 - d; ++p) {
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pos *= static_cast<size_t>(parSize[p]);
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}
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index += pos;
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}
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return index;
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}
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#if defined(NDEBUG)
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template <>
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inline size_t get_index_from_pos<2> (const Vector<CoordinateScalarType, 2>& parPos, const Vector<CoordinateScalarType, 2>& parSize) {
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return parPos.y() * parSize.x() + parPos.x();
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}
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#endif
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} //namespace implem
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template <typename T, size_t D>
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TileIterator<T, D>::TileIterator() :
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m_pos(CoordinateScalarType()),
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m_from(CoordinateScalarType()),
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m_to(CoordinateScalarType()),
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m_areafrom(CoordinateScalarType()),
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m_areato(CoordinateScalarType()),
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m_total(CoordinateScalarType()),
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m_data(nullptr)
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{
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}
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template <typename T, size_t D>
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TileIterator<T, D>::TileIterator (std::vector<T>* parData, const coords& parFrom, const coords& parTo) :
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m_pos(parFrom),
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m_from(parFrom),
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m_to(parTo),
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m_areafrom(parFrom),
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m_areato(parTo),
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m_total(parTo - parFrom),
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m_data(parData)
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{
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DK_ASSERT(parData);
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}
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template <typename T, size_t D>
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TileIterator<T, D>::TileIterator (std::vector<T>* parData, const coords& parFrom, const coords& parTo, const coords& parAreaFrom, const coords& parAreaTo, const coords& parTotal) :
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m_pos(parFrom),
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m_from(parFrom),
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m_to(parTo),
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m_areafrom(parAreaFrom),
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m_areato(parAreaTo),
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m_total(parTotal),
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m_data(parData)
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{
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DK_ASSERT(parData);
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}
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template <typename T, size_t D>
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void TileIterator<T, D>::increment() {
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for (size_t d = 0; d < D - 1; ++d) {
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++m_pos[d];
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if (m_pos[d] >= m_areato[d])
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m_pos[d] = m_areafrom[d];
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else
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return;
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}
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++m_pos[D - 1];
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}
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template <typename T, size_t D>
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void TileIterator<T, D>::decrement() {
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for (size_t d = 0; d < D; ++d) {
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if (m_pos[d] > m_areafrom[d]) {
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--m_pos[d];
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return;
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}
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else {
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m_pos[d] = m_areato[d];
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}
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}
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++m_pos[D - 1];
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}
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template <typename T, size_t D>
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void TileIterator<T, D>::advance (size_t parAdvance) {
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//TODO: implement
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}
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template <typename T, size_t D>
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ptrdiff_t TileIterator<T, D>::distance_to (const TileIterator& parOther) {
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return std::distance(this->get_current_index(), parOther.get_current_index());
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}
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template <typename T, size_t D>
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bool TileIterator<T, D>::equal (const TileIterator& parOther) const {
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return m_data == parOther.m_data and m_pos == parOther.m_pos;
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}
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} //namespace dk
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