File indexing completed on 2024-04-21 03:54:30

 /*
     SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef SPATIAL_INDEX_ENTRY_P_H
 #define SPATIAL_INDEX_ENTRY_P_H
 
 #include <cstdint>
 
 #pragma pack(push)
 #pragma pack(1)
 
 /** Entry in the spatial index.
  *  This is essentially just a pair of numbers, the first being the position
  *  on the z-order curve and defines the order, the second being the index into the
  *  property table.
  *
  *  These entries exist in very large quantities, so compact storage is important.
  */
 class SpatialIndexEntry
 {
 public:
     inline constexpr SpatialIndexEntry(uint32_t z, uint32_t propertyIdx)
         : m_z(z)
         , m_unused(0)
         , m_propHigh(propertyIdx >> 8)
         , m_propLow(propertyIdx)
     {
     }
 
     inline constexpr uint32_t z() const
     {
         return m_z;
     }
 
     inline constexpr uint32_t propertyIndex() const
     {
         return m_propHigh << 8 | m_propLow;
     }
 
 private:
     uint32_t m_z : 22;
     [[maybe_unused]] uint32_t m_unused : 6;
     uint32_t m_propHigh : 4;
     uint8_t m_propLow;
 };
 
 #pragma pack(pop)
 
 inline constexpr bool operator<(SpatialIndexEntry lhs, SpatialIndexEntry rhs)
 {
     return lhs.z() < rhs.z();
 }
 
 inline constexpr bool operator<(SpatialIndexEntry lhs, uint32_t rhs)
 {
     return lhs.z() < rhs;
 }
 
 inline constexpr bool operator<(uint32_t lhs, SpatialIndexEntry rhs)
 {
     return lhs < rhs.z();
 }
 
 #endif