39 lines
801 B
C++
39 lines
801 B
C++
#ifndef OSRM_INCLUDE_GUIDANCE_TURN_BEARING_HPP_
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#define OSRM_INCLUDE_GUIDANCE_TURN_BEARING_HPP_
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#include <cstdint>
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#include <boost/assert.hpp>
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namespace osrm
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{
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namespace guidance
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{
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namespace
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{
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const double bearing_scale = 360.0 / 256.0;
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}
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#pragma pack(push, 1)
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class TurnBearing
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{
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public:
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// discretizes a bearing into distinct units of 1.4 degrees
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TurnBearing(const double value = 0) : bearing(value / bearing_scale)
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{
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BOOST_ASSERT_MSG(value >= 0 && value < 360.0,
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"Bearing value needs to be between 0 and 360 (exclusive)");
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}
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double Get() const { return bearing * bearing_scale; }
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private:
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std::uint8_t bearing;
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};
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#pragma pack(pop)
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} // namespace guidance
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} // namespace osrm
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#endif /* OSRM_INCLUDE_GUIDANCE_TURN_BEARING_HPP_ */
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