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LibCapy - freehandbezier

FreeHandBezier class.

Macros:

#define CAPY_FREEHANDBEZIER_H

Enumerations:

None.

Typedefs:

None.

Struct CapyFreeHandBezierPos :

Struct CapyFreeHandBezierPos's properties:

  union {

    double vals[2];

    struct { double x, y; };

};

Struct CapyFreeHandBezierPos's methods:

None.

Struct CapyFreeHandBezier :

Struct CapyFreeHandBezier's properties:

  CapyFreeHandBezierPos* ctrls;

Array of controls of the curve under drawing

  size_t nbSegment;

Number of segments in the curve

  double lengthLastSegment;

Length of the last segment

  double thresholdDrift;

Threshold for the shift (default: 1.0)

  double cumulDrift;

Cumulative drift for the last segment

  bool flagContinuity;

Flag for continuity (default: true)

  CapyPad(bool, flagContinuity);

Struct CapyFreeHandBezier's methods:

  void (*destruct)(void);

Destructor

  void (*start)(CapyFreeHandBezierPos const pos);

Start a new Bezier curve from a given position

Input argument(s):

pos: the position

  void (*extend)(CapyFreeHandBezierPos const pos);

Extend a Bezier curve to a new position

Input argument(s):

pos: the position

  CapyBezierSpline* (*end)(void);

End a Bezier curve

Output and side effect(s):

Return a CapyBezierSpline

  CapyFreeHandBezierPos (*eval)(
    size_t const iSegment,
    double const t);

Eval the Bezier curve

Input argument(s):

iSegment: index of the segment
t: parameter (in [0,1]

Output and side effect(s):

Return the position as a CapyFreeHandBezierPos

Functions:

CapyFreeHandBezier CapyFreeHandBezierCreate(void);

Create a CapyFreeHandBezier

Output and side effect(s):

Return a CapyFreeHandBezier

CapyFreeHandBezier* CapyFreeHandBezierAlloc(void);

Allocate memory for a new CapyFreeHandBezier and create it

Output and side effect(s):

Return a CapyFreeHandBezier

Exception(s):

May raise CapyExc_MallocFailed.

void CapyFreeHandBezierFree(CapyFreeHandBezier** const that);

Free the memory used by a CapyFreeHandBezier* and reset '*that' to NULL

Input argument(s):

that: a pointer to the CapyFreeHandBezier to free

2026-07-30
in LibCapy,
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