Method FromShapeParameters

src/colmap/feature/types.cc:65–79

    : x(x_), y(y_), a11(a11_), a12(a12_), a21(a21_), a22(a22_) {}

FeatureKeypoint FeatureKeypoint::FromShapeParameters(const float x,
                                                     const float y,
                                                     const float scale_x,
                                                     const float scale_y,
                                                     const float orientation,
                                                     const float shear) {
  THROW_CHECK_GE(scale_x, 0.0);
  THROW_CHECK_GE(scale_y, 0.0);
  return FeatureKeypoint(x,
                         y,
                         scale_x * std::cos(orientation),
                         -scale_y * std::sin(orientation + shear),
                         scale_x * std::sin(orientation),
                         scale_y * std::cos(orientation + shear));
}

void FeatureKeypoint::Rescale(const float scale) { Rescale(scale, scale); }