o a*@sdddlmZddlmZmZddlmZddlmZddlm Z GdddeZ Gdd d eZ d S) )curve_to_quadratic) AbstractPendecomposeSuperBezierSegment)ReverseContourPen)BasePointToSegmentPen)ReverseContourPointPenc@sveZdZdZ  dddZddZdd Zd d Zd d ZddZ ddZ ddZ ddZ ddZ ddZddZdS)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. ignore_single_points: don't emit contours containing only a single point NOTE: The "ignore_single_points" argument is deprecated since v1.3.0, which dropped Robofab subpport. It's no longer needed to special-case UFO2-style anchors (aka "named points") when using ufoLib >= 2.0, as these are no longer drawn onto pens as single-point contours, but are handled separately as anchors. FNcCsT|rt||_n||_||_||_|rddl}|jdtdd||_d|_d|_ dS)NrzIignore_single_points is deprecated and will be removed in future versions) stacklevel) rpenmax_errstatswarningswarn UserWarningignore_single_pointsstart_pt current_pt)selfZ other_penr reverse_directionr rrr9/usr/lib/python3/dist-packages/fontTools/pens/cu2quPen.py__init__+s  zCu2QuPen.__init__cCs|jdur tddS)NzmoveTo is requiredrAssertionErrorrrrr_check_contour_is_open< zCu2QuPen._check_contour_is_opencCs|jdur tddS)Nz closePath or endPath is requiredrrrrr_check_contour_is_closed@rz!Cu2QuPen._check_contour_is_closedcCs&|jdur|j|jd|_dSdSN)rr moveTorrrr _add_moveToDs  zCu2QuPen._add_moveTocCs*|||_|_|js|dSdSr)rrrrr!rptrrrr Is   zCu2QuPen.moveTocCs&|||j|||_dSr)rr!r lineTorr"rrrr$Os  zCu2QuPen.lineTocGs`|t|}|dkr||ddS|dkr*||jj||d|_dStd|)Nr&illegal qcurve segment point count: %d)rlenr$r!r qCurveTorr)rpointsnrrrr)Us  zCu2QuPen.qCurveTocCsb|j|||f}t||j}|jdur&tt|d}|j|dd|j|<|j|dddS)Nr rr%)rrr r strr(getr))rZpt1Zpt2Zpt3curveZ quadraticr+rrr_curve_to_quadraticas   zCu2QuPen._curve_to_quadraticcGs|t|}|dkr|j|dS|dkr%t|D]}|j|qdS|dkr0|j|dS|dkr=||ddStd|)Nr r%rz%illegal curve segment point count: %d)rr(r/rr)r$r)rr*r+ZsegmentrrrcurveTois   zCu2QuPen.curveTocC,||jdur|jd|_|_dSr)rrr closePathrrrrrr3ys  zCu2QuPen.closePathcCr2r)rrr endPathrrrrrr4s  zCu2QuPen.endPathcCs||j||dSr)rr addComponent)rZ glyphNametransformationrrrr5szCu2QuPen.addComponent)FNF)__name__ __module__ __qualname____doc__rrrr!r r$r)r/r1r3r4r5rrrrrs    rc@s>eZdZdZ  dddZddZdd Zd d Zd d ZdS) Cu2QuPointPena4 A filter pen to convert cubic bezier curves to quadratic b-splines using the RoboFab 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. FNcCs0t||r t||_n||_||_||_dSr)rrrr r r )rZother_point_penr rr rrrrs   zCu2QuPointPen.__init__cCs^t|dksJ|dddk}g}|dd}|dd}|D]y\}}|dkr||D]]}|d\} } } } |dd|dd} }|| || g}t||j}|jduritt|d}|j|dd|j|<dd|ddD}|| | | | f|d |g|dd}q-q |||g|dd}q |r|dd|dd}||dS) Nr%rmover&r.r cSsg|]}|ddifqSFNr).0r#rrr sz/Cu2QuPointPen._flushContour..qcurve) r(_split_super_bezier_segmentsrr r r,r-append _drawPoints)rsegmentsclosedZ new_segmentsZ prev_pointsZ prev_on_curve segment_typer* sub_pointson_curvesmoothnamekwargsZbcp1Zbcp2ZcubicZquadr+Z new_pointsrrr _flushContours2       zCu2QuPointPen._flushContourc Csg}t|d}|dkr|||S|dkri|d\}}}}|d}ttdd|DD]8\} } g} | ddD] } | | ddifq:| |dkrV| ||||fn | | dddif|| q.|Std|) Nr%r r&cSsg|]\}}}}|qSrr)r>r#_rrrr?s z>Cu2QuPointPen._split_super_bezier_segments..FTz$expected 2 control points, found: %d)r(rB enumeraterr) rr*Z sub_segmentsr+rHrIrJrKZnum_sub_segmentsirGZ new_segmentZpointrrrrAs,     z*Cu2QuPointPen._split_super_bezier_segmentsc CsV|j}|g}t|D]\}\}}|dvr:t|dks%Jdt||d\}}} } |j|||| fi| q |dkrt|dksLJdt||dd} | rp|dkr[| }n| D]\}}} } |j|d|| fi| q]|d\}}} } |dur}q |j|||| fi| q td ||D]\}}} } |j|d|| fi| q|dS) N)r<liner%z$illegal line segment point count: %drr@r r'r&zunexpected segment type: %r)r Z beginPathrNr(ZaddPointrr4) rrDr Zlast_offcurvesrOrFr*r#rIrJrKZ offcurvesrrrrCs<    zCu2QuPointPen._drawPointscCs |jdusJ|j||dSr)Z currentPathr r5)rZ baseGlyphNamer6rrrr5szCu2QuPointPen.addComponentr=) r7r8r9r:rrLrArCr5rrrrr;s    &r;N) ZfontTools.cu2qurZfontTools.pens.basePenrrZ fontTools.pens.reverseContourPenrZfontTools.pens.pointPenrrrr;rrrrs    u