o h.@sdZddlZddlmZddlmZddlmZddlm Z ddl m Z m Z m Z mZmZd d gZd Zd ZeeZeZd dZGdddeZddZddZd!ddZd!ddZ d"ddZ       d#dd ZddZd d Z dS)$aConverts cubic bezier curves to quadratic splines. Conversion is performed such that the quadratic splines keep the same end-curve tangents as the original cubics. The approach is iterative, increasing the number of segments for a spline until the error gets below a bound. Respective curves from multiple fonts will be converted at once to ensure that the resulting splines are interpolation-compatible. N) AbstractPen)PointToSegmentPen)ReverseContourPen)curves_to_quadratic)UnequalZipLengthsErrorIncompatibleSegmentNumberErrorIncompatibleSegmentTypesErrorIncompatibleGlyphsErrorIncompatibleFontsErrorfonts_to_quadraticfont_to_quadraticgMbP?z&com.github.googlei18n.cu2qu.curve_typecGs.ttdd|Ddkrt|tt|S)zyEnsure each argument to zip has the same length. Also make sure a list is returned for python 2/3 compatibility. css|]}t|VqdSNlen).0arg/var/www/html/construction_image-detection-poc/venv/lib/python3.10/site-packages/fontTools/cu2qu/ufo.py <zzip..r)rsetrlist_zip)argsrrrzip7s rc@sXeZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ dS)GetSegmentsPenzPen to collect segments into lists of points for conversion. Curves always include their initial on-curve point, so some points are duplicated between segments. cCsd|_g|_dSr)_last_ptsegmentsselfrrr__init__Hs zGetSegmentsPen.__init__cGs&|dvr |d|_|j||fdS)N)movelineqcurvecurve)rrappend)r tagrrrr _add_segmentLs zGetSegmentsPen._add_segmentcC|d|dS)Nr"r)r ptrrrmoveToQzGetSegmentsPen.moveTocCr*)Nr#r+r,rrrlineToTr/zGetSegmentsPen.lineTocG|jd|jg|RdS)Nr$r)rr pointsrrrqCurveToWzGetSegmentsPen.qCurveTocGr1)Nr%r2r3rrrcurveToZr6zGetSegmentsPen.curveTocC|ddS)Ncloser+rrrr closePath]zGetSegmentsPen.closePathcCr8)Nendr+rrrrendPath`r;zGetSegmentsPen.endPathcCsdSrr)r glyphNametransformationrrr addComponentcszGetSegmentsPen.addComponentN) __name__ __module__ __qualname____doc__r!r)r.r0r5r7r:r=r@rrrrrAs rcCs"t}t|dd}|||jS)z6Get a glyph's segments as extracted by GetSegmentsPen.T)outputImpliedClosingLine)rr drawPointsr)glyphpenpointPenrrr _get_segmentsgs rJcCs||}|rt|}|D]K\}}|dkr|j|q|dkr(|j|q|dkr6|j|ddq|dkrD|j|ddq|dkrM|q|dkrV|qt d |dS) z=Draw segments as extracted by GetSegmentsPen back to a glyph.r"r#r%rNr$r9r<zUnhandled segment type "%s") clearContoursgetPenrr.r0r7r5r:r=AssertionError)rGrreverse_directionrHr(rrrr _set_segmentszs&      rOTcstdd|Ds Jdtdd|D||}t|dtfdd|dd Ds1Jd td }||dd||<|sGd krNd d|DSdd|DS)z2Return quadratic approximations of cubic segments.css|] }|ddkVqdS)rr%Nrrsrrrrz)_segments_to_quadratic..zNon-cubic given to convertcSg|]}|dqS)rrrPrrr z*_segments_to_quadratic..rc3s|] }t|kVqdSrrrPnrrrrRrNzConverted incompatiblycSg|]}d|fqS)r$rrprrrrTrUcSrZ)r%rr[rrrrTrU)allrrstrget)rmax_errstats all_quadratic new_points spline_lengthrrVr_segments_to_quadratics &  recs z tdd|D}Wn tyt|wt|sdS|}g}i}t|D]=\} } | ddtfdd| ddDsJd d| D|| <nd kr_t| |||} |s[| | kr]d }| } || q'|r{t|} t|| D] \} } t| | |qp|rt ||d |S) zDo the actual conversion of a set of compatible glyphs, after arguments have been set up. Return True if the glyphs were modified, else return False. cSsg|]}t|qSr)rJ)rgrrrrTrUz(_glyphs_to_quadratic..Frc3s|] }|dkVqdS)rNrrPr(rrrrRz'_glyphs_to_quadratic..rNcSrS)rrrPrrrrTrUr%T)r) rrrany enumerater]rer'rOr )glyphsr`rNrarbsegments_by_locationglyphs_modifiednew_segments_by_location incompatibleir new_segmentsnew_segments_by_glyphrGrrgr_glyphs_to_quadratics:     rrFcCs^|duri}|s td}t|ttfr|}n|gt|}t|t|ks'Jt|||||S)aConvert the curves of a set of compatible of glyphs to quadratic. All curves will be converted to quadratic at once, ensuring interpolation compatibility. If this is not required, calling glyphs_to_quadratic with one glyph at a time may yield slightly more optimized results. Return True if glyphs were modified, else return False. Raises IncompatibleGlyphsError if glyphs have non-interpolatable outlines. Ni)DEFAULT_MAX_ERR isinstancertuplerrr)rjr`rNrarb max_errorsrrrglyphs_to_quadratics  rwc sZ|r4dd|D}t|dkr)tt|} | dvr tddS| dkr%nt| t|dkr4tdd ur:irB|rBtd sH|sHtt |t t fr\t|t|ksYJ|} n |re|gt|} t t t frt|tksvJd d t |D} n rfd d |D} t } i} t jdd|DD]J} g}g}t || D]\}}| |vr||| ||qzt||||r| | Wqty}zt||| | <WYd }~qd }~ww| rt| | r |r t}tddfdd|D|r+|D]}|jtd} |rdnd}| |kr)||jt<q| S)aConvert the curves of a collection of fonts to quadratic. All curves will be converted to quadratic at once, ensuring interpolation compatibility. If this is not required, calling fonts_to_quadratic with one font at a time may yield slightly more optimized results. Return the set of modified glyph names if any, else return an empty set. By default, cu2qu stores the curve type in the fonts' lib, under a private key "com.github.googlei18n.cu2qu.curve_type", and will not try to convert them again if the curve type is already set to "quadratic". Setting 'remember_curve_type' to False disables this optimization. Raises IncompatibleFontsError if same-named glyphs from different fonts have non-interpolatable outlines. cSsh|] }|jtdqS)cubic)libr_CURVE_TYPE_LIB_KEYrfrrr sz%fonts_to_quadratic..r) quadraticmixedz%Curves already converted to quadraticFrxz'fonts may contain different curve typesNz4Only one of max_err and max_err_em can be specified.cSsg|] \}}|jj|qSrinfo unitsPerEm)rr|errrrT'sz&fonts_to_quadratic..csg|]}|jjqSrrr{) max_err_emrrrT)scss|]}|VqdSr)keysr{rrrr-rz%fonts_to_quadratic..zNew spline lengths: %sz, c3s |] }d||fVqdS)z%s: %dNr)rl)rarrrDsr~r)rnextiterloggerrNotImplementedErrorwarning TypeErrorrsrtrrurrunionr'rraddr errorr sortedrjoinryr_rz)fontsrr`rNra dump_statsremember_curve_typerb curve_types curve_typervmodified glyph_errorsnamerjcur_max_errorsfontrexcspline_lengthsnew_curve_typer)rrarr s             cKt|gfi|S)zConvenience wrapper around glyphs_to_quadratic, for just one glyph. Return True if the glyph was modified, else return False. )rw)rGkwargsrrrglyph_to_quadraticPrcKr)zConvenience wrapper around fonts_to_quadratic, for just one font. Return the set of modified glyph names if any, else return empty set. )r )rrrrrr Xr)T)NFNT)NNFNFTT)!rDloggingfontTools.pens.basePenrfontTools.pens.pointPenr fontTools.pens.reverseContourPenrrerrorsrrr r r __all__rsrz getLoggerrArrrrrJrOrerrrwr rr rrrrs<       &  + ! c