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#ifndef BLACKSHADES_QUATERNIONS_H
#define BLACKSHADES_QUATERNIONS_H
struct XYZ {
float x, y, z;
};
#ifdef __cplusplus
constexpr bool operator==(const XYZ& u, const XYZ& v)
{
return u.x == v.x && u.y == v.y && u.z == v.z;
}
constexpr XYZ operator+(XYZ u, const XYZ& v)
{
return {u.x + v.x, u.y + v.y, u.z + v.z};
}
constexpr XYZ operator-(XYZ u, const XYZ& v)
{
return {u.x - v.x, u.y - v.y, u.z - v.z};
}
constexpr XYZ operator*(XYZ u, const XYZ& v)
{
return {u.x * v.x, u.y * v.y, u.z * v.z};
}
constexpr XYZ operator*(XYZ u, float k)
{
return {u.x * k, u.y * k, u.z * k};
}
constexpr XYZ operator/(XYZ u, float k)
{
return {u.x / k, u.y / k, u.z / k};
}
constexpr XYZ& operator+=(XYZ& u, const XYZ& v) { return u = u + v; }
constexpr XYZ& operator-=(XYZ& u, const XYZ& v) { return u = u - v; }
constexpr XYZ& operator*=(XYZ& u, const XYZ& v) { return u = u * v; }
constexpr XYZ& operator*=(XYZ& u, float k) { return u = u * k; }
constexpr XYZ& operator/=(XYZ& u, float k) { return u = u / k; }
#endif // __cplusplus
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
void CrossProduct(struct XYZ P, struct XYZ Q, struct XYZ *V);
void Normalise(struct XYZ *vectory);
bool PointInTriangle(struct XYZ *p, struct XYZ normal,
struct XYZ *p1, struct XYZ *p2, struct XYZ *p3);
float LineFacetd(struct XYZ p1, struct XYZ p2,
struct XYZ pa, struct XYZ pb, struct XYZ pc,
struct XYZ n, struct XYZ *p);
void ReflectVector(struct XYZ *vel, struct XYZ *n);
struct XYZ DoRotation(struct XYZ thePoint,
float xang, float yang, float zang);
float findDistance(struct XYZ point1, struct XYZ point2);
float findLengthfast(struct XYZ point1);
float findDistancefast(struct XYZ point1, struct XYZ point2);
float dotproduct(struct XYZ point1, struct XYZ point2);
bool sphere_line_intersection(float x1, float y1, float z1,
float x2, float y2, float z2,
float x3, float y3, float z3, float r);
#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus
#endif // BLACKSHADES_QUATERNIONS_H
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