vector_normal.h

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/***************************************************************************
 *   Copyright (C) 1998-2010 by authors (see AUTHORS.txt )                 *
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#ifndef _LUXRAYS_VECTOR_NORMAL_H
#define _LUXRAYS_VECTOR_NORMAL_H

#include "luxrays/core/geometry/vector.h"
#include "luxrays/core/geometry/normal.h"

namespace luxrays {

// Geometry Inline Functions
inline Vector Cross(const Vector &v1, const Normal &v2) {
        return Vector((v1.y * v2.z) - (v1.z * v2.y),
                  (v1.z * v2.x) - (v1.x * v2.z),
                  (v1.x * v2.y) - (v1.y * v2.x));
}

inline Vector Cross(const Normal &v1, const Vector &v2) {
        return Vector((v1.y * v2.z) - (v1.z * v2.y),
                  (v1.z * v2.x) - (v1.x * v2.z),
                  (v1.x * v2.y) - (v1.y * v2.x));
}

inline float Dot(const Normal &n1, const Vector &v2) {
        return n1.x * v2.x + n1.y * v2.y + n1.z * v2.z;
}

inline float Dot(const Vector &v1, const Normal &n2) {
        return v1.x * n2.x + v1.y * n2.y + v1.z * n2.z;
}

inline float AbsDot(const Vector &v1, const Normal &n2) {
        return fabsf(v1.x * n2.x + v1.y * n2.y + v1.z * n2.z);
}

inline float AbsDot(const Normal &n1, const Vector &v2) {
        return fabsf(n1.x * v2.x + n1.y * v2.y + n1.z * v2.z);
}

}

#endif  /* _LUXRAYS_VECTOR_NORMAL_H */

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