advance_position()

bool MayaFlux::Kakshya::RegionProcessorBase::advance_position ( std::vector< uint64_t > &  position, uint64_t  steps = 1, const OrganizedRegion *  region = nullptr  )

protectedvirtual

Advance position according to memory layout and looping.

Supports both linear and multi-dimensional advancement, and respects region-specific looping.

Parameters

position	Position vector to advance (modified in place).
steps	Number of steps to advance.
region	Optional region to constrain advancement.

Returns

true if position was advanced, false if at end.

Definition at line 57 of file RegionProcessorBase.cpp.

{
    if (position.empty())
        return false;
 
    for (auto& pos : position) {
        pos += steps;
    }
 
    if ((region != nullptr) && region->looping_enabled && !region->loop_start.empty() && !region->loop_end.empty()) {
        for (size_t dim = 0; dim < std::min(position.size(), region->loop_start.size()); ++dim) {
            if (position[dim] >= region->loop_end[dim]) {
                position[dim] = region->loop_start[dim] + (position[dim] - region->loop_end[dim]);
            }
        }
    }
 
    auto frame_count = m_structure.get_frame_count();
    for (auto& pos : position) {
        if (pos >= frame_count) {
            pos = frame_count - 1;
            return false;
        }
    }
 
    return true;
}

References MayaFlux::Kakshya::ContainerDataStructure::get_frame_count(), MayaFlux::Kakshya::OrganizedRegion::loop_end, MayaFlux::Kakshya::OrganizedRegion::loop_start, MayaFlux::Kakshya::OrganizedRegion::looping_enabled, and m_structure.

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