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48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#include "geometry/nearby_points_sweeper.hpp"
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namespace m2
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{
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// NearbyPointsSweeper::Event ----------------------------------------------------------------------
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NearbyPointsSweeper::Event::Event(Type type, double y, double x, size_t index, uint8_t priority)
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: m_type(type), m_y(y), m_x(x), m_index(index), m_priority(priority)
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{
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}
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bool NearbyPointsSweeper::Event::operator<(Event const & rhs) const
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{
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if (m_y != rhs.m_y)
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return m_y < rhs.m_y;
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if (m_type != rhs.m_type)
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return m_type < rhs.m_type;
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if (m_x != rhs.m_x)
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return m_x < rhs.m_x;
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if (m_index != rhs.m_index)
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return m_index < rhs.m_index;
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return m_priority < rhs.m_priority;
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}
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// NearbyPointsSweeper -----------------------------------------------------------------------------
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NearbyPointsSweeper::NearbyPointsSweeper(double eps) : m_xEps(eps), m_yEps(eps)
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{
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CHECK_GREATER_OR_EQUAL(m_xEps, 0.0, ());
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CHECK_GREATER_OR_EQUAL(m_yEps, 0.0, ());
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}
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NearbyPointsSweeper::NearbyPointsSweeper(double xEps, double yEps) : m_xEps(xEps), m_yEps(yEps)
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{
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CHECK_GREATER_OR_EQUAL(m_xEps, 0.0, ());
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CHECK_GREATER_OR_EQUAL(m_yEps, 0.0, ());
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}
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void NearbyPointsSweeper::Add(double x, double y, size_t index, uint8_t priority)
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{
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auto const yEpsHalf = 0.5 * m_yEps;
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m_events.emplace_back(Event::TYPE_SEGMENT_START, y - yEpsHalf, x, index, priority);
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m_events.emplace_back(Event::TYPE_SEGMENT_END, y + yEpsHalf, x, index, priority);
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}
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} // namespace m2
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