51 lines
908 B
C
51 lines
908 B
C
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#ifndef __ARCBALL_H__
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#define __ARCBALL_H__
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typedef struct
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{
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double x, y, z, w;
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} Quat;
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enum QuatPart
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{
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X,
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Y,
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Z,
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W,
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QuatLen
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};
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typedef Quat HVect;
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typedef double HMatrix[QuatLen][QuatLen];
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typedef enum AxisSet
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{
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NoAxes,
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CameraAxes,
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BodyAxes,
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OtherAxes,
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NSets
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} AxisSet;
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typedef double *ConstraintSet;
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extern Quat qOne;
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void ArcBall_Init (void);
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void ArcBall_Place (HVect Center,
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double Radius);
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void ArcBall_UseSet (AxisSet axis_Set);
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void ArcBall_Update (void);
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void ArcBall_Value (HMatrix m_Now);
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void ArcBall_Values (double *alpha,
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double *beta,
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double *gamma);
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void ArcBall_BeginDrag (void);
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void ArcBall_EndDrag (void);
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void ArcBall_Mouse (HVect v_Now);
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void ArcBall_CopyMat (HMatrix inm,
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HMatrix outm);
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#endif /* __ARCBALL_H__ */
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