79 lines
2 KiB
C
79 lines
2 KiB
C
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#ifndef VECTOR3_H
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#define VECTOR3_H
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#include "basics_global.h"
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/*
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* Cartesian coordinates (X, Y, Z) - right handed :
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*
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* Y (up)
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* |
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* |
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* +----X
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* /
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* /
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* Z
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*
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* Spherical coordinates (R, PHI, THETA) :
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*
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* R is the distance to origin
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* PHI is typical azimuth
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* THETA is elevation angle (not polar angle!)
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*
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* X=1 Y=0 Z=0 => PHI=0
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* X=0 Y=0 Z=-1 => PHI=PI/2
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* X=-1 Y=0 Z=0 => PHI=PI
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* X=0 Y=0 Z=1 => PHI=3*PI/2
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*
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* X=1 Y=0 Z=0 => THETA=0
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* X=0 Y=1 Z=0 => THETA=PI/2
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* X=0 Y=-1 Z=0 => THETA=-PI/2
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*/
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namespace paysages {
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namespace system {class PackStream;}
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}
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typedef struct
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{
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double x;
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double y;
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double z;
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} Vector3;
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typedef struct
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{
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double r;
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double theta;
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double phi;
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} VectorSpherical;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_ZERO;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_DOWN;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_UP;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_NORTH;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_SOUTH;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_EAST;
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BASICSSHARED_EXPORT extern Vector3 VECTOR_WEST;
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static inline Vector3 v3(double x, double y, double z)
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{
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Vector3 result = {x, y, z};
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return result;
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}
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BASICSSHARED_EXPORT void v3Save(PackStream* stream, Vector3* v);
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BASICSSHARED_EXPORT void v3Load(PackStream* stream, Vector3* v);
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BASICSSHARED_EXPORT Vector3 v3Translate(Vector3 v1, double x, double y, double z);
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BASICSSHARED_EXPORT Vector3 v3Add(Vector3 v1, Vector3 v2);
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BASICSSHARED_EXPORT Vector3 v3Sub(Vector3 v1, Vector3 v2);
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BASICSSHARED_EXPORT Vector3 v3Neg(Vector3 v);
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BASICSSHARED_EXPORT Vector3 v3Scale(Vector3 v, double scale);
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BASICSSHARED_EXPORT double v3Norm(Vector3 v);
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BASICSSHARED_EXPORT Vector3 v3Normalize(Vector3 v);
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BASICSSHARED_EXPORT double v3Dot(Vector3 v1, Vector3 v2);
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BASICSSHARED_EXPORT Vector3 v3Cross(Vector3 v1, Vector3 v2);
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BASICSSHARED_EXPORT VectorSpherical v3ToSpherical(Vector3 v);
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BASICSSHARED_EXPORT Vector3 v3FromSpherical(VectorSpherical v);
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#endif // VECTOR3_H
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