a Sic @sddlZddlZddlZddlmZmZddlmZGdddZdddZ z ej j Z Wne yndZ Yn0dd d Zdd d Zd dZddZdS)N)Image ImageColor) deprecatec @seZdZd9ddZddZd:ddZd;d d ZdddZ d?ddZ d@ddZ dAddZ dBddZ dCddZdDddZdEddZdFd d!Zd"d#Zd$d%Zd&d'ZdGd+d,ZdHd-d.ZdId/d0ZdJd1d2ZdKd3d4ZdLd5d6ZdMd7d8ZdS)N ImageDrawNcCs||jr|d}|dur(|j}||jkrR|dkrJ|jdkrJd}ntd|dkrd|j|_nd|_||_|j|_tj |j||_ ||_|dvr|j d|_ n|j d |_ |d vrd |_ nd |_ d|_d|_dS) a Create a drawing instance. :param im: The image to draw in. :param mode: Optional mode to use for color values. For RGB images, this argument can be RGB or RGBA (to blend the drawing into the image). For all other modes, this argument must be the same as the image mode. 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draw_texts^    $      $z!ImageDraw.text..draw_text)rN)rmultiline_textrrr&)rr/rrrrralignrrrr stroke_fillrrrrrrZ stroke_inkr rr!rs>  "/  zImageDraw.textcCs|dkrtd|durd}n*t|dkr4tdn|ddvrHtdg}d }||}|||| }|D],}|j|||| | d }||t||}ql|d}|dd kr|t|d|d 8}n |dd kr|t|d|8}t|D]\}}|d }|||}|d d kr(||d 8}n|d dkr>||8}|dkrJn4|dkrb||d 7}n|dkrv||7}ntd|j||f|||||| | | | | d ||7}qdS)Nttb/ttb direction is unsupported for multiline textlar?#anchor must be a 2 character stringrtb'anchor not supported for multiline textrrrrm@rrrcenterright)align must be "left", "center" or "right")rrrrrr) rr`rr textlengthappendmax enumerater)rr/rrrrrrrrrrrrwidths max_widthlines line_spacingrb line_widthtopidxrwidth_differencer r r!rsf               zImageDraw.multiline_textc Cstddd||rbt4tjdtd||||||||WdS1sX0Y|durr|}t0tjdtd||||||WdS1s0YdS)z*Get the size of a given string, in pixels.r ztextbbox or textlengthrrN) rrrrrrmultiline_textsizer&getsize)rrrrrrrrr r r!rBs0   "  zImageDraw.textsizec Cstdddd}||} ||||} tLtjdtd| D](} || ||||||\} } t|| }qDWdn1s0Y|t | | |fS)Nrrmultiline_textbboxrrr) rrrrrrrrrr`)rrrrrrrrrrrrbr line_heightr r r!rgs$    *zImageDraw.multiline_textsizec Cs||rtd|r(|jdvr(td|dur8|}|r@dn|j}z||||||WStytddt 2tj dt d |j |||||d }Wdn1s0Y|d kr|d YS|d YS0dS)z@Get the length of a given string, in pixels with 1/64 precision.z&can't measure length of multiline textrrNrz.textlength support for fonts without getlengthrrrrrrr) rrrr&rZ getlengthrrrrrrr) rrrrrrrrror r r!rs.    $ zImageDraw.textlengthc  Cs| r|jdvrtd||r>|||||||||| | | S|durN|}| rVdn|j} ||| ||| | |} | d|d| d|d| d|d| d|dfS) z2Get the bounding box of a given string, in pixels.rrNrrrr?r\)rrrrr&rgetbbox)rr/rrrrrrrrrrrbboxr r r!textbboxs. zImageDraw.textbboxc  Cs.|dkrtd|durd}n*t|dkr4tdn|ddvrHtdg} d } ||}|||| }|D].}|j||||| | d }| |t| |} ql|d}|dd kr|t|d|d 8}n |dd kr|t|d|8}d}t|D] \}}|d }| | |}|d d kr0||d 8}n|d dkrF||8}|dkrRn4|dkrj||d 7}n|dkr~||7}ntd|j||f|||||| | | d }|dur|}nDt |d |d t |d|dt|d|dt|d|df}||7}q|dur*|d |d|d |dfS|S)Nrrrr?rrrrr)rrrrrrrrrrrr)rrrrrr\) rr`rrrrrrrmin)rr/rrrrrrrrrrrrrrrbrrrrrrZ bbox_liner r r!rs                zImageDraw.multiline_textbbox)N)N)Nr)N)NNr)NNr)NrN)NN)NNr)N)NNr)rNN)NNr)rNNr) NNNr>rNNNrNF) NNNr>rNNNrNF)Nr>NNNr)Nr>NNNr)NNNNF) NNr>rNNNrF) NNr>rNNNrF)__name__ __module__ __qualname__r"r&r-r3r5r9r<rbrirarcrsrxrzrrrrrrrrrrrr r r r!r0s *     <      S r Q (  ' -rcCs.z ||WSty(t||YS0dS)a A simple 2D drawing interface for PIL images. :param im: The image to draw in. :param mode: Optional mode to use for color values. For RGB images, this argument can be RGB or RGBA (to blend the drawing into the image). For all other modes, this argument must be the same as the image mode. If omitted, the mode defaults to the mode of the image. N)getdrawrr)rrr r r!rq0s   rqcCs^d}|rd|vr4zddlm}Wnty2Yn0|durHddlm}|rV||}||fS)a (Experimental) A more advanced 2D drawing interface for PIL images, based on the WCK interface. :param im: The image to draw in. :param hints: An optional list of hints. :returns: A (drawing context, drawing resource factory) tuple. NZnicestr) _imagingagg) ImageDraw2)r$r ImportErrorrrq)rhintshandlerr r r!rHs     rc Csf|}|\}}z0|||f}t|||kr2WdS||||f<WnttfyXYdS0||fh} t} | rbt} | D]\}}|d|f|d|f||df||dffD]\} } | | f| vs| dks| dkrqz|| | f}WnttfyYq0| | | f|dur$t|||k}n||ko4||k}|r||| | f<| | | fqqz| } | } qjdS)a (experimental) Fills a bounded region with a given color. :param image: Target image. :param xy: Seed position (a 2-item coordinate tuple). See :ref:`coordinate-system`. :param value: Fill color. :param border: Optional border value. If given, the region consists of pixels with a color different from the border color. If not given, the region consists of pixels having the same color as the seed pixel. :param thresh: Optional threshold value which specifies a maximum tolerable difference of a pixel value from the 'background' in order for it to be replaced. Useful for filling regions of non-homogeneous, but similar, colors. Nrr)r _color_diffr IndexErrorsetadd)imager/valueborderthreshpixelrUrV backgroundedgeZ full_edgeZnew_edgestrMrr r r! floodfill`s<   4  rcst|tstd|dkr"tdt|ttfs8tdt|dkrP|^nt|dkrf|\ntdtddgRDstd tdkstd d krtd t|ttfstd ddfdddd}|||}fdd|DS)u Generate a list of vertices for a 2D regular polygon. :param bounding_circle: The bounding circle is a tuple defined by a point and radius. The polygon is inscribed in this circle. (e.g. ``bounding_circle=(x, y, r)`` or ``((x, y), r)``) :param n_sides: Number of sides (e.g. ``n_sides=3`` for a triangle, ``6`` for a hexagon) :param rotation: Apply an arbitrary rotation to the polygon (e.g. ``rotation=90``, applies a 90 degree rotation) :return: List of regular polygon vertices (e.g. ``[(25, 50), (50, 50), (50, 25), (25, 25)]``) How are the vertices computed? 1. Compute the following variables - theta: Angle between the apothem & the nearest polygon vertex - side_length: Length of each polygon edge - centroid: Center of bounding circle (1st, 2nd elements of bounding_circle) - polygon_radius: Polygon radius (last element of bounding_circle) - angles: Location of each polygon vertex in polar grid (e.g. A square with 0 degree rotation => [225.0, 315.0, 45.0, 135.0]) 2. For each angle in angles, get the polygon vertex at that angle The vertex is computed using the equation below. X= xcos(φ) + ysin(φ) Y= −xsin(φ) + ycos(φ) Note: φ = angle in degrees x = 0 y = polygon_radius The formula above assumes rotation around the origin. In our case, we are rotating around the centroid. To account for this, we use the formula below X = xcos(φ) + ysin(φ) + centroid_x Y = −xsin(φ) + ycos(φ) + centroid_y zn_sides should be an intr\zn_sides should be an int > 2z!bounding_circle should be a tupler?z[bounding_circle should contain 2D coordinates and a radius (e.g. (x, y, r) or ((x, y), r) )css|]}t|ttfVqdSr')r(intfloatrAr r r!rOrEz4_compute_regular_polygon_vertices..z0bounding_circle should only contain numeric datazBbounding_circle centre should contain 2D coordinates (e.g. (x, y))rz$bounding_circle radius should be > 0z"rotation should be an int or floatc Sst|dttd||dttd||ddt|dttd||dttd||ddfS)NrrFrr?)roundrGrPrQrR)rcrHcentroidr r r!_apply_rotations"z:_compute_regular_polygon_vertices.._apply_rotationcs|dg}|||S)Nrr )rpolygon_radiusrTZ start_point)rr r!_compute_polygon_vertexszB_compute_regular_polygon_vertices.._compute_polygon_vertexcSsRg}d|}dd||}td|D]&}||||7}|dkr&|d8}q&|S)NrFr{g?r)r_r)rvrwrdrHZ current_angle_r r r! _get_angless  z6_compute_regular_polygon_vertices.._get_anglescsg|]}|qSr r )rBrT)rrrr r!rDsz5_compute_regular_polygon_vertices..) r(rrrr^r@r`allr)rurvrwrrdr )rrrrr!rts<)        rtcs<ttr,tfddtdtDStSdS)zJ Uses 1-norm distance to calculate difference between two values. c3s"|]}t||VqdSr')absrAZcolor1Zcolor2r r!rOrEz_color_diff..rN)r(r@sumr_r`rrr rr!r s "r)N)NN)Nr)rGr+rr$rr _deprecaterrrqrr8ZOutlinerrrrtrr r r r!!s(       8u