anchor_mask.hpp

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#pragma once
 
#include <cstdint>
 
namespace physics {
 
enum class AnchorFace : uint8_t {
  neg_x = 0b000001,
  pos_x = 0b000010,
  neg_y = 0b000100,
  pos_y = 0b001000,
  neg_z = 0b010000,
  pos_z = 0b100000,
};
 
using AnchorMask = uint8_t;
inline constexpr AnchorMask k_anchor_null = 0;
inline constexpr AnchorMask k_anchor_bottom = static_cast<AnchorMask>(AnchorFace::neg_z);
 
constexpr auto anchorFaceBit(AnchorFace face) -> AnchorMask {
  return static_cast<AnchorMask>(face);
}
 
constexpr auto hasAnchorFace(AnchorMask mask, AnchorFace face) -> bool {
  return (mask & anchorFaceBit(face)) != 0;
}
 
}