quattypes.h

[Game.Programming].Academic - Graphics Gems (6 books source code)

/**** QuatTypes.h - Basic type declarations ****/
#ifndef _H_QuatTypes
#define _H_QuatTypes
/*** Definitions ***/
typedef struct {float x, y, z, w;} Quat; /* Quaternion */
enum QuatPart {X, Y, Z, W};
typedef float HMatrix[4][4]; /* Right-handed, for column vectors */
typedef Quat EulerAngles;    /* (x,y,z)=ang 1,2,3, w=order code  */
#endif