U
    Dvfi  ã                   @   sR   d Z ddlmZ ddlmZmZmZmZ ddlZdgZ	dd„ Z
G dd„ deƒZdS )	z#Calculate the perimeter of a glyph.é    )ÚBasePen)ÚapproximateQuadraticArcLengthCÚcalcQuadraticArcLengthCÚapproximateCubicArcLengthCÚcalcCubicArcLengthCNÚPerimeterPenc                 C   s$   t  | d |d  | d |d  ¡S )Nr   é   )ÚmathÚhypot)Úp0Úp1© r   ú?/tmp/pip-unpacked-wheel-qlge9rch/fontTools/pens/perimeterPen.pyÚ	_distance   s    r   c                   @   s^   e Zd Zddd„Zdd„ Zdd„ Zd	d
„ Zdd„ Zdd„ Zdd„ Z	dd„ Z
dd„ Zdd„ ZdS )r   Nç{®Gázt?c                 C   sH   t  | |¡ d| _|| _|dkr&| jn| j| _|dkr<| jn| j| _	d S )Nr   gú~j¼t“X?gú~j¼t“H?)
r   Ú__init__ÚvalueÚ	toleranceÚ_addCubicQuadratureÚ_addCubicRecursiveÚ	_addCubicÚ_addQuadraticQuadratureÚ_addQuadraticExactÚ_addQuadratic)ÚselfZglyphsetr   r   r   r   r      s    ÿÿýzPerimeterPen.__init__c                 C   s
   || _ d S ©N)Ú_PerimeterPen__startPoint©r   r   r   r   r   Ú_moveTo'   s    zPerimeterPen._moveToc                 C   s"   |   ¡ }|| jkr|  | j¡ d S r   )Ú_getCurrentPointr   Ú_lineTor   r   r   r   Ú
_closePath*   s    
zPerimeterPen._closePathc                 C   s    |   ¡ }|  jt||ƒ7  _d S r   )r   r   r   )r   r   r   r   r   r   r    /   s    zPerimeterPen._lineToc                 C   s   |  j t|||ƒ7  _ d S r   )r   r   ©r   Úc0Úc1Úc2r   r   r   r   3   s    zPerimeterPen._addQuadraticExactc                 C   s   |  j t|||ƒ7  _ d S r   )r   r   r"   r   r   r   r   6   s    z$PerimeterPen._addQuadraticQuadraturec                 C   s&   |   ¡ }|  t|Ž t|Ž t|Ž ¡ d S r   )r   r   Úcomplex)r   r   Úp2r   r   r   r   Ú_qCurveToOne9   s    zPerimeterPen._qCurveToOnec                 C   s    |  j t||||| jƒ7  _ d S r   )r   r   r   ©r   r#   r$   r%   Úc3r   r   r   r   =   s    zPerimeterPen._addCubicRecursivec                 C   s   |  j t||||ƒ7  _ d S r   )r   r   r)   r   r   r   r   @   s    z PerimeterPen._addCubicQuadraturec                 C   s,   |   ¡ }|  t|Ž t|Ž t|Ž t|Ž ¡ d S r   )r   r   r&   )r   r   r'   Zp3r   r   r   r   Ú_curveToOneC   s    zPerimeterPen._curveToOne)Nr   )Ú__name__Ú
__module__Ú__qualname__r   r   r!   r    r   r   r(   r   r   r+   r   r   r   r   r      s   
)Ú__doc__ZfontTools.pens.basePenr   ZfontTools.misc.bezierToolsr   r   r   r   r	   Ú__all__r   r   r   r   r   r   Ú<module>   s   