a g2@sddlZddlmZmZddlmZddlmZddlm Z ddl m Z ddl m Z Gdd d eZ Gd d d e ZGd d d ZdS)N)curve_to_quadraticcurves_to_quadratic)decomposeSuperBezierSegment) FilterPenReverseContourPen)BasePointToSegmentPen)ReverseContourPointPencs6eZdZdZd fdd ZfddZd d ZZS) Cu2QuPena A filter pen to convert cubic bezier curves to quadratic b-splines using the FontTools SegmentPen protocol. Args: other_pen: another SegmentPen used to draw the transformed outline. max_err: maximum approximation error in font units. For optimal results, if you know the UPEM of the font, we recommend setting this to a value equal, or close to UPEM / 1000. reverse_direction: flip the contours' direction but keep starting point. stats: a dictionary counting the point numbers of quadratic segments. all_quadratic: if True (default), only quadratic b-splines are generated. if False, quadratic curves or cubic curves are generated depending on which one is more economical. FNTcs.|r t|}t|||_||_||_dSN)rsuper__init__max_errstats all_quadratic)selfZ other_penrreverse_directionrr __class__P/var/www/sistema_ama/venv/lib/python3.9/site-packages/fontTools/pens/cu2quPen.pyr )s  zCu2QuPen.__init__cs|j|||f}t||j|j}|jdurPtt|d}|j|dd|j|<|jrj|j|ddnDt|dkr|j|ddn$t|dksJt j |dddS)Nr) current_ptrrrrstrlengetqCurveTor curveTo)rZpt1Zpt2Zpt3curveresultnrrr_convert_curve8s  zCu2QuPen._convert_curvecGsLt|}|dkr|j|n,|dkr>t|D]}|j|q,n |j|dS)Nr)rr$rr)rpointsr#segmentrrrr Gs  zCu2QuPen.curveTo)FNT)__name__ __module__ __qualname____doc__r r$r __classcell__rrrrr s r c@s`eZdZdZdejfdejfdejfdejfdZdd d Zd d Z d dZ ddZ ddZ dS) Cu2QuPointPenaA filter pen to convert cubic bezier curves to quadratic b-splines using the FontTools PointPen protocol. Args: other_point_pen: another PointPen used to draw the transformed outline. max_err: maximum approximation error in font units. For optimal results, if you know the UPEM of the font, we recommend setting this to a value equal, or close to UPEM / 1000. reverse_direction: reverse the winding direction of all contours. stats: a dictionary counting the point numbers of quadratic segments. all_quadratic: if True (default), only quadratic b-splines are generated. if False, quadratic curves or cubic curves are generated depending on which one is more economical. rrr)movelineqcurver!FNTcCs6t||rt||_n||_||_||_||_dSr )rr r penrrr)rZother_point_penrrrrrrrr js  zCu2QuPointPen.__init__cCst|dksJ|dddk}g}|dd}|dd}|D]\}}|dkrF||D]}|d\} } } } |dd|dd} }|| || g}t||j|j}|jdurtt|d}|j|dd|j|<dd|ddD}|| | | | f|jst|dkr(|d |gn|d|g|dd}q^q@|||g|dd}q@|r|dd|dd}| |dS) Nrrr-r!rcSsg|]}|ddifqS)FNr).0ptrrr z/Cu2QuPointPen._flushContour..r/) r_split_super_bezier_segmentsrrrrrrappend _drawPoints)rsegmentsclosedZ new_segmentsZ prev_pointsZ prev_on_curve segment_typer% sub_pointson_curvesmoothnamekwargsZbcp1Zbcp2ZcubicZquadr#Z new_pointsrrr _flushContour{s4     zCu2QuPointPen._flushContourc Csg}t|d}|dkr$||n|dkr|d\}}}}|d}ttdd|DD]p\} } g} | ddD]} | | ddifqr| |dkr| ||||fn| | dddif|| qZn td||S) Nrrr1cSsg|]\}}}}|qSrr)r2r3_rrrr4r5z>Cu2QuPointPen._split_super_bezier_segments..FTz$expected 2 control points, found: %d)rr7 enumeraterAssertionError) rr%Z sub_segmentsr#r=r>r?r@Znum_sub_segmentsir<Z new_segmentZpointrrrr6s&     z*Cu2QuPointPen._split_super_bezier_segmentsc Cs6|j}|g}|j}t|D]\}\}}||vr||\}} | t||slJd|d|dt||dd} |dkr| }n*| D]$\} } } }|j| d| | fi|q|d\} } } }| dur|dksJq|j| || | fi|q td|q |D]&\} } } }|j| d| | fi|q|dS)Nzillegal z segment point count: expected z, got r1rr/zunexpected segment type: %r)r0Z beginPath_Cu2QuPointPen__points_requiredrCrZaddPointrDendPath)rr9r0Zlast_offcurvesZpoints_requiredrEr;r%r#opZ offcurvesr3r>r?r@rrrr8s8   zCu2QuPointPen._drawPointscCs |jdusJ|j||dSr )Z currentPathr0 addComponent)rZ baseGlyphNameZtransformationrrrrIszCu2QuPointPen.addComponent)FNT) r'r(r)r*operatoreqgerFr rAr6r8rIrrrrr,Ss  !#r,c@sreZdZdZdddZddZddZd d Zd d Zd dZ ddZ ddZ ddZ ddZ ddZddZdS) Cu2QuMultiPenaA filter multi-pen to convert cubic bezier curves to quadratic b-splines in a interpolation-compatible manner, using the FontTools SegmentPen protocol. Args: other_pens: list of SegmentPens used to draw the transformed outlines. max_err: maximum approximation error in font units. For optimal results, if you know the UPEM of the font, we recommend setting this to a value equal, or close to UPEM / 1000. reverse_direction: flip the contours' direction but keep starting point. This pen does not follow the normal SegmentPen protocol. Instead, its moveTo/lineTo/qCurveTo/curveTo methods take a list of tuples that are arguments that would normally be passed to a SegmentPen, one item for each of the pens in other_pens. 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