Provided by: flydraw_4.07a~dfsg1-7_amd64 bug

NAME

       flydraw - an inline drawing tool

SYNOPSIS

       flydraw

DESCRIPTION

       flydraw  is  an  inline  drawing tool, which uses libgd to output PNG, JPG, GIF files.  It
       parse its standard input for drawing commands.  Each command takes one line.

   DRAWING COMMANDS
       In the following lines, [color] may be either a color name, or 3 integers  between  0  and
       255, separated by commas, for the values of red,green,blue.

       animate fra,del,rep
              This  command  is only available for WIMS OEF and doc, and MUST appear on the first
              line. Set up animation for fra frames, with del seconds  between  frames,  and  rep
              repetitions (rep=0 means infinite repetition).

       animstep n
              Set up an integer which can be called in any evaluation. Used for animation. Direct
              use of this command must be avoided under WIMS.

       arc x,y,w,h,a1,a2,[color]
              Arc segment of an ellipse of width w and hight h centered at (x,y), from  angle  a1
              to angle a2.

       arrow x1,y1,x2,y2,l,[color]
              Arrow (x1,y1)--->(x2,y2), where l is the length (in pixels) of arrowhead.

       circle x,y,d,[color]
              Circle of center (x,y) and diameter d (in pixels).

       comment
              Does nothing.

       copy x,y,x1,y1,x2,y2,[filename]
              (Synonym:  insert)  Insert  the  region  from  (x1,y1)  to  (x2,y2)  (in pixels) of
              [filename] to (x,y). If x1=y1=x2=y2=-1, the whole [filename] is copied.

       copyresized x1,y1,x2,y2,dx1,dy1,dx2,dy2,[filename]
              Insert the region from (x1,y1) to  (x2,y2)  (in  pixels)  of  [filename],  possibly
              resized,  to  the  region  of  (dx1,dy1) to (dx2,dy2). If x1=y1=x2=y2=-1, the whole
              [filename] is copied and resized.

       darrow x1,y1,x2,y2,l,[color]
              (Synonym: dasharrow dashedarrow) Dashed arrow (x1,y1)- - ->(x2,y2), where l is  the
              length (in pixels) of arrowhead.

       dhline x,y,[color]
              (Synonym:   dashedhorizontalline  dashhorizontalline  hdline  horizontaldashedline)
              Dashed horizontal line through (x,y).

       dline x1,y1,x2,y2,[color]
              (Synonym: dashedline dashline) Dashed line segment (x1,y1)---(x2,y2).

       dlines [color],x1,y1,x2,y2,x3,y3...
              (Synonym:     dashedlines)     dashlines      n      dashed      line      segments
              (x1,y1)---(x2,y2)---(x3,y3)...

       dvline x,y,[color]
              (Synonym:  dashedverticaline  dashverticalline  vdline  verticaldashedline)  Dashed
              vertical line through (x,y).

       ellipse x,y,w,h,[color]
              Ellipse with center (x,y), width w and height h.

       fcircle x,y,d,[color]
              (Synonym: ball disk filledcircle) Filled circle of center (x,y) and diameter d  (in
              pixels).

       fellipse x,y,w,h,[color]
              (Synonym: filledellipse) Filled ellipse with center (x,y), width w and height h.

       fill x,y,[color]
              (Synonym:  flood  floodfill)  Flood  fill the region containing (x,y) with the same
              original color, by color.

       filltoborder x,y,[color1],[color2]
              Flood fill by color2 the region containing (x,y) and bounded by color1.

       fpoly [color],x1,y1,x2,y2,x3,y3...
              (Synonym:     filledpoly      filledpolygon      fpolygon)      Filled      polygon
              (x1,y1)-(x2,y2)-(x3,y3)...

       frect x1,y1,x2,y2,[color]
              (Synonym:  filledrect  fillecrectangle  frectangle)  Filled  rectangle with corners
              (x1,y1) and (x2,y2).

       fsquare x,y,s,[color]
              (Synonym: filledsquare) Filled square with sides s (in pixels) and first corner  at
              (x,y).

       ftriangle x1,y1,x2,y2,x3,y3,[color]
              (Synonym: filledtriangle) Filled triangle with vertices (x1,y1),(x2,y2),(x3,y3).

       hline x,y,[color]
              (Synonym: horizontalline) Horizontal line through (x,y).

       interlace
              Set interlaced image

       killbrush
              Turns off brush selection for line drawing.

       killtile
              Turns off tile selection for filling.

       lattice x0,y0,x1,y1,x2,y2,n1,n2,[color]
              A  lattice  of  n1xn2  points  starting  with (x0,y0), with n1 rows in direction of
              (x1,y1) and n2 rows in direction of (x2,y2).

       line x1,y1,x2,y2,[color]
              (Synonym: seg segment) Line segment (x1,y1)---(x2,y2).

       lines [color],x1,y1,x2,y2,x3,y3...
              n line segments (x1,y1)---(x2,y2)---(x3,y3)...

       linewidth w
              Set line width to w (in pixels) for line drawing.

       new x,y
              Set a new image of size x,y.

       output [filename]
              Output the current image to [filename].

       parallel x1,y1,x2,y2,xv,yv,n,[color]
              n parallel lines starting from (x1,y1)---(x2,y2), with displacement (xv,yv).

       pixels [color],x1,y1,x2,y2,...
              Points (all of diameter 1) at (x1,y1), (x2,y2), ...

       plot [color],[formula]
              (Synonym: curve) Plot a curve  according  to  [formula]  which  can  be  either  an
              explicit function of x, or a pair of parametric functions in t.

       plotjump j
              Plotted  curve willjump is two consecutive points have distance more than j pixels.
              Useful to avoid plotting discontinuous functions as continuous. Default value: 200.

       plotstep n
              (Synonym: plotsteps tstep tsteps) Set the number of  point  computations  in  curve
              plot. Defaults to 100.

       point x,y,[color]
              A   (fat)   point   at  (x,y),  whose  diameter  is  equal  to  linewidth.   points
              [color],x1,y1,x2,y2,...  (Fat) points at (x1,y1), (x2,y2), ..., whose diameters are
              equal to linewidth.

       poly [color],x1,y1,x2,y2,x3,y3...
              (Synonym: polygon) Polygon (x1,y1)-(x2,y2)-(x3,y3)...

       range x1,x2,y1,y2
              Set  the drawing range to [x1,x2] horizontally and [y1,y2] vertically. Note that by
              default, horizontal range is [0,xsize-1] and vertical range is [ysize-1,0].

       rays [color],x0,y0,x1,y1,x2,y2...
              Line segments (x0,y0)---(x1,y1), (x0,y0)---(x2,y2), ...

       rect x1,y1,x2,y2,[color]
              (Synonym: rectangle) Rectangle with corners (x1,y1) and (x2,y2).

       setbrush [filename]
              Use the image [filename] as a brush for all line draws.

       setpixel x,y,[color]
              A point (of diameter 1 pixel) at (x,y).

       setstyle [color1],[color2],...
              Set the line style to color1,color2,...

       settile [filename]
              Use the image [filename] as a tile for all filling commands.

       size x,y
              Set the image size to x pixels horizontally and y pixels vertically.

       square x,y,s,[color]
              Square with sides s (in pixels) and first corner at (x,y).

       text [color],x,y,[font],[string]
              (Synonym:   print   string   write)   Write   the    string    at    (x,y),    with
              font=small,medium,large or giant.

       textup [color],x,y,[font],[string]
              (Synonym:   stringup   writeup)   Write   upwards   the   string   at  (x,y),  with
              font=small,medium,large or giant.

       trange t1,t2
              (Synonym: ranget) Set the  t  range  to  [t1,t2]  for  parametric  curve  plotting.
              Defaults to [0,1].

       transparent [color]
              Makes [color] a transparent color.

       triangle x1,y1,x2,y2,x3,y3,[color]
              Triangle with vertices (x1,y1),(x2,y2),(x3,y3).

       vline x,y,[color]
              (Synonym: verticalline) Vertical line through (x,y).

       xrange x1,x2
              (Synonym:  rangex)  Set  the  horizontal  drawing  range  to  [x1,x2].  Defaults to
              [0,xsize-1].

       yrange y1,y2
              (Synonym: rangey)  Set  the  horizontal  drawing  range  to  [y1,y2].  Defaults  to
              [ysize-1,0].

AUTHORS

       Flydraw  was  completely  rewritten  to replace a public domain program called Fly by XIAO
       Gang from the University of Nice (France) in April 2000.