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#ifndef IGL_SOLID_ANGLE_H
#define IGL_SOLID_ANGLE_H
#include "igl_inline.h"
#include <Eigen/Dense>
namespace igl
{
/// Compute the signed solid angle subtended by the oriented 3d triangle (A,B,C) at some point P
///
/// @param[in] A 3D position of corner
/// @param[in] B 3D position of corner
/// @param[in] C 3D position of corner
/// @param[in] P 3D position of query point
/// @return signed solid angle
template <
typename DerivedA,
typename DerivedB,
typename DerivedC,
typename DerivedP>
IGL_INLINE typename DerivedA::Scalar solid_angle(
const Eigen::MatrixBase<DerivedA> & A,
const Eigen::MatrixBase<DerivedB> & B,
const Eigen::MatrixBase<DerivedC> & C,
const Eigen::MatrixBase<DerivedP> & P);
}
#ifndef IGL_STATIC_LIBRARY
# include "solid_angle.cpp"
#endif
#endif