Provided by: gmt_4.5.11-1build1_amd64 
NAME
pslib 4.3 - A PostScript based plotting library
DESCRIPTION
pslib was created to make the generation of PostScript page description code easier. It is a library
that contains a series of tools that can be used to create plots. The resulting PostScript code is ASCII
text and can be edited using any text editor. Thus, it is fairly easy to modify a plot file even after
it has been created, e.g., to change text strings, set new gray shades or colors, experiment with various
pen widths, etc. pslib is written in C but now includes FORTRAN bindings (thanks to John Goff, WHOI) and
can therefore be called from both C and FORTRAN programs. To use this library, you must link your
plotting program with pslib.a. pslib is the core of the GMT graphics programs. pslib output conforms to
the Adobe Encapsulated PostScript File Specification Version 3.0 (EPSL), and may be used as EPS files and
inserted into, say, a Word document on a Mac. See Appendix F in the Technical Reference for detailed
instructions.
Before any pslib calls can be issued, the plotting system must be initialized. This is done by calling
ps_plotinit (or ps_plotinit_hires), which defines macros, sets up the plot-coordinate system, scales, and
[optionally] opens a file where all the PostScript code will be written. Normally, the plot code is
written to stdout. The measure unit for sizes and positions can be set to be centimeter (c), inch (i),
or meter (m). When all plotting is done, you must terminate the plotting system by calling ps_plotend.
pslib uses the direct color model where red, green, and blue are given separately, each must be in the
range from 0-255. If red < 0 then no fill operation takes place. Most plot-items can be plotted with or
without outlines. If outline is desired (i.e., set to 1), it will be drawn using the current linewidth
and pattern. pslib uses highly optimized macro substitutions and scales the coordinates depending on the
resolution of the hardcopy device so that the output file is kept as compact as possible.
A wide variety of output devices that support PostScript exist, including laserwriters (color or
monochrome) and workstations running PostScript based window systems like Sun's OpenWindows. xnews (part
of OpenWindows) or ghostscript (public domain) can be used to create rasterfiles at a user-defined
resolution (DPI), making it possible to render PostScript on a Versatec and other non-PostScript raster
devices. Regular Sun rasterfiles created under NeWS from PostScript files can be sent to a variety of
color hardcopy units. Check the devices available on your network.
The pslib is now fully 64-bit compliant. However, only a few function parameters are affected by this
(such as the number of point in an array which can now be a 64-bit integer). These few parameters are
here given the type long to distinguish them from int. Note that under standard 32-bit compilation they
are equivalent. Users of this library under 64-bit mode must make sure they pass proper long variables
(under Unix flavors) or __int64 under Windows 64.
FUNCTION CALLS
The following is a list of available functions and a short description of what they do and what
parameters they expect. All floating point variables are expected to be double (i.e., 8 bytes), whereas
all integers are assumed to be 4 bytes long. All plotting functions are declared as functions returning
an int. Currently, the return value is undefined.
void ps_arc (x, y, radius, angle1, angle2, status)
double x, y, radius, angle1, angle2;
int status;
Draws a circular arc centered on (x,y) from angle angle1 to angle2. Angles must be given in
decimal degrees. If angle1 > angle2, a negative arc is drawn. status is a value from 0
through 3. 1 means set new anchor point, 2 means stroke the circle, 3 means both, 0 means none
of the above.
void ps_axis (xpos, ypos, length, startval, stopval, tickval, label, annotpointsize, side)
double xpos, ypos, length, startval, stopval, tickval;
double annotpointsize, side;
char *label;
Plots an axis with tickmarks, annotation, and label. xpos, ypos, and length are in inches (or
cm or meters), annotpointsize in points (72 points = 1 inch), else data units are used. side
can be 0, 1, 2, or 3, which selects lower x-axis, right y-axis, upper x-axis, or left y-axis,
respectively. labelpointsize = 1.5 * annotpointsize. A negative tickval will reverse the
sense of positive direction, e.g., to have the y-axis be positive down.
void ps_bitimage (xpos, ypos, xlength, ylength, buffer, nx, ny, invert, f_rgb, b_rgb)
double xpos, ypos, xlength, ylength;
unsigned char buffer[];
int nx, ny, invert, f_rgb[3], b_rgb[3];
Plots a 1-bit image using the given foreground color f_rgb and background color b_rgb. Specify
position of lower left corner and size (in inches) of image. buffer is an unsigned character
array with 8 pixels per byte. nx,ny refers to the number of pixels in image. The rowlength of
buffer must be an integral number of 8. buffer[0] is upper left corner. buffer values are
stored as columns, starting at the lower left corner and ending at the upper right corner. If
invert is 0 then the bits that are 1 are painted with the foreground color, while bits that are
0 are painted with the backgound color. If invert is 1, foreground and background are
switched. To get a partly transparent image, set the first index of the foreground or
background color to -1, i.e., f_rgb[0]=-1 or b_rgb[0]=1. See the Adobe Systems PostScript
Reference Manual for more details.
void ps_circle (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a circle and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern.
void ps_clipoff ()
Resets the clip path to what it was before the last call to ps_clipon.
void ps_clipon (xarray, yarray, npoints, rgb, flag)
double xarray[], yarray[];
long npoints;
int rgb[3], flag;
Sets up a user-definable clip path. Plotting outside this polygon will be clipped until
ps_clipoff is called. If red >= 0 the inside of the path is filled with the specified color.
flag is used to create complex clip paths consisting of several disconnected regions, and takes
on values 0-3. flag = 1 means this is the first path in a multi-segment clip path. flag = 2
means this is the last segment. Thus, for a single path, flag = 3.
void ps_colorimage (xpos, ypos, xlength, ylength, buffer, nx, ny, depth)
double xpos, ypos, xlength, ylength;
unsigned char buffer[];
int nx, ny, depth;
Plots a 1-, 2-, 4-, 8-, or 24-bit deep image. This functions sets up a call to the PostScript
colorimage or image operators. xpos, ypos, xlength, ylength specify the position of lower left
corner and size (in inches) of image. The pixel values are stored in buffer, an unsigned
character array in scanline orientation with gray shade or r/g/b values (0 - 255) where 0 is
black, 255 is white. buffer[0] is upper left corner. depth is number of bits per pixel (24,
8, 4, 2, or 1). nx,ny refers to the number of pixels in image. The rowlength of buffer must
be an integral number of 8/depth. E.g. if depth = 4, then buffer[j]/16 gives shade for
pixel[2j-1] and buffer[j]%16 (mod 16) gives shade for pixel[2j]. When -depth is passed instead
then "hardware" interpolation of the image is requested. If -nx is passed with 8- or 24-bit
images then the first one or three bytes of buffer holds the gray or r/g/b color for pixels
that are to be masked out using the PostScript Level 3 Color Mask method. See the Adobe
Systems PostScript Reference Manual for more details.
void ps_colortiles (x0, y0, xlength, ylength, buffer, nx, ny)
double x0, y0, xlength, ylength;
int nx, ny;
unsigned char buffer[];
Plots a true color image based on individual color tiles. x0, y0 is the location of the lower
left corner of the image in inches. xlength, ylength is the image size in inches. buffer
contains rgb triplets stored as rgbrgbrgb... nx, ny is the image size in pixels.
void ps_command (text)
char *text;
Writes a raw PostScript command to the PostScript output file, e.g., "1 setlinejoin".
void ps_comment (text)
char *text;
Writes a comment (text) to the PostScript output file, e.g., "Start of graph 2".
void ps_cross (xcenter, ycenter, diameter)
double xcenter, ycenter, diameter;
Plots a cross (x) at the specified point using current pen-width and -pattern that fits inside
a circle of given diameter. No fill possible.
void ps_diamond (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a diamond and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern. The symbol will fit inside a circle of given
diameter.
void ps_ellipse (xcenter, ycenter, angle, major, minor, rgb, outline)
double xcenter, ycenter, angle, major, minor;
int rgb[3], outline;
Plots a ellipse with its major axis rotated by angle degrees and fills it with the specified
color. If outline == 1, the outline will be drawn using current pen-width and -pattern.
void ps_encode_font (font_no)
int font_no;
Will reencode this font using the current encoding vector if it is not StandardEncoding.
void ps_epsimage (xpos, ypos, xlength, ylength, buffer, size, nx, ny, ox, oy)
double xpos, ypos, xlength, ylength;
unsigned char buffer[];
int size, nx, ny, ox, oy;
Plots an Encapsulated PostScript (EPS) image. The EPS file is stored in buffer and has size
bytes. This functions simply includes the image in the PostScript output stream within an
appropriate wrapper. Specify position of lower left corner and size (in inches) of image.
nx,ny,ox,oy refers to the width, height and origin (lower left corner) of the BoundingBox.
void ps_flush ()
Flushes the output buffer.
void ps_hexagon (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a hexagon and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern. The symbol will fit inside a circle of given
diameter.
void ps_image (xpos, ypos, xlength, ylength, buffer, nx, ny, bits)
double xpos, ypos, xlength, ylength;
unsigned char buffer[];
int nx, ny, bits;
Obsolete, simply passes arguments to ps_colorimage.
void ps_imagefill (x, y, n, image, imagefile, invert, dpi, outline, f_rgb, b_rgb)
double x[], y[], x0, y0;
int n, image, invert, dpi, outline, f_rgb[3], b_rgb[3];
char imagefile;
Similar to ps_polygon, but fills the area with an image pattern rather than a color or
grayshade. x and y hold the arrays of n points. 90 predefined patterns are available (See
GMT Appendix E). image gives the image number (1-90). If set to 0, imagefile must be the name
to the user's image, which must be stored as a Sun 1-, 8-, or 24-bit rasterfile.
1-bit images only: (i) The set pixels (1) are colored using the RGB combination in f_rgb, while
the unset pixels (0) are painted with b_rgb. Set the f_rgb[0] to -1 to make set pixels
transparent. Set b_rgb[0] to -1 to make the unset pixels transparent. (ii) If invert is TRUE
(1), the set and unset pixels are interchanged before plotting.
The unit size of the image is controlled by dpi (in dots-per-inch). If set to zero, the image
is plotted at the device resolution. If outline is TRUE, the current penwidth is used to draw
the polygon outline.
void ps_itriangle (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots an inverted and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern. The symbol will fit inside a circle of given
diameter.
long ps_line (xarray, yarray, npoints, type, close, dummy)
double xarray[], yarray[];
long npoints;
int type, close, dummy;
Draw a continuous line from the positions in the x-y arrays. If close == 1, the first and last
point will automatically be closed by the PostScript driver. If this is the first segment in a
multi-segment path, set type == 1. To end the segments and have the line(s) drawn, set type
== 2. Thus, for a single segment, type must be 3. The line is drawn using the current
penwidth. The dummy is an obsolete parameter no longer used internally.
unsigned char *ps_load_image (fp, header)
FILE *fp;
struct imageinfo *header;
Reads the image contents of the EPS file or Sun rasterfile pointed to by the open filepointer
fp. The routine can handle Encapsulated PostScript files or 1-, 8-, 24-, or 32-bit rasterfiles
in old, standard, run-length encoded, or RGB-style Sun format.
void ps_octagon (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a octagon and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern. The symbol will fit inside a circle of given
diameter.
void ps_patch (xarray, yarray, npoints, rgb, outline)
double xarray[], yarray[];
long npoints;
int rgb[3], outline;
Identical to ps_polygon except polygon must be < 20 points long and there will be no attempt to
shorten the path by discarding unnecessary intermediate points along straight segments.
Primarily used when painting large number of small polygons and not waste output space. If
more than 20 points are given we pass the buck to ps_polygon.
void ps_pentagon (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a pentagon and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern. The symbol will fit inside a circle of given
diameter.
void ps_pie (xcenter, ycenter, radius, azimuth1, azimuth2, rgb, outline)
double xcenter, ycenter, radius, azimuth1, azimuth2;
int rgb[3], outline;
Plots a sector of a circle and paints it with the specified RGB combination. If outline == 1,
the outline will be drawn using current pen-width and -pattern.
void ps_plot (xabs, yabs, kpen)
double xabs, yabs;
int kpen;
Absolute move (kpen=3) or draw (kpen=2), using current linewidth. Use (kpen=-2) to make sure
the line is stroked.
void ps_plotend (last_page)
int last_page;
Terminates the plotting sequence and closes plot file (if other than stdout). If last_page ==
1, then a PostScript showpage command is issued, which initiates the printing process on
hardcopy devices.
void ps_plotinit (plotfile, overlay, mode, xoff, yoff, xscl, yscl, ncopies, dpi, unit, pagesize,
rgb, encoding, eps)
char *plotfile, *encoding;
int overlay, mode, ncopies, dpi, unit;
double xoff, yoff, xscl, yscl;
int pagesize[2], rgb[3]; struct EPS * eps;
Initializes the plotting. If plotfile == NULL (or ""), then output is sent to stdout, else
output is sent to plotfile. overlay should be 1 only if you plan to append it to some existing
PostScript file. mode contains three flags in the three lowest bits. The lowest bit controls
the plot orientation and can be 0 (Landscape) or 1 (Portrait). The next bit, if set to 1, will
re-encode the fonts to include European accented characters using the now-obsolete GMT 3.4
encoding. To use the ISOLatin1 encoding set the 5th bit to 1. The third bit controls the
format used to write PostScript images: 0 means binary, 1 means hexadecimal. Most printers
needs the latter while some can handle binary which are 50% smaller and therefore execute
faster. xoff,yoff are used to move the origin from the default position in the lower left
corner. xscl,yscl are used to scale the entire plot (Usually set to 1.0, 1.0). Set ncopies to
get more than 1 copy. dpi sets the hardcopy resolution in dots pr units. For optimum plot
quality and processing speed, choose dpi to match the intended plotter resolution. Examples
are 300 for most laserwriters, 2540 for Linotype-300, and ~85 for Sun screens. When in doubt,
use 300. unit can be any of 0 (cm), 1 (inch), or 2 (m), telling the plot system what units are
used for distance and sizes. Note that, regardless of choice of unit, dpi is still in dots-pr-
inch. pagesize means the physical width and height of the plotting media in points, (typically
612 by 792 for Letter or 595 by 842 for A4 laserwriter plotters. The rgb array holds the color
of the page (usually white = 255,255,255). The encoding is the name of a character encoding
scheme to be used, e.g., Standard, ISOLatin1, ISO-8859-2, etc. The EPS structure is defined in
the pslib.h include file and contains information that will make up the comments header of a
EPS file. Programmers who plan to call pslib routines should read the comments in pslib.h
first. Note that the FORTRAN binding does not expect this last argument.
void ps_plotinit_hires (plotfile, overlay, mode, xoff, yoff, xscl, yscl, ncopies, dpi, unit,
pagesize, rgb, encoding, eps)
char *plotfile, *encoding;
int overlay, mode, ncopies, dpi, unit, rgb[3];
double xoff, yoff, xscl, yscl;
double pagesize[2]; struct EPS * eps;
Same as ps_plotinit but expects the page size to be given in double precision points.
void ps_plotr (xrel, yrel, kpen)
double xrel, yrel;
int kpen;
Move (kpen = 3) or draw (kpen = 2) relative to current point (see ps_plot). Use (kpen=-2) to
make sure the line is stroked.
void ps_plus (xcenter, ycenter, diameter)
double xcenter, ycenter, diameter;
Plots a plus (+) at the specified point using current pen-width and -pattern that fits inside a
circle of given diameter. No fill possible.
void ps_point (xcenter, ycenter, diameter)
double xcenter, ycenter, diameter;
Plots a point (dot) using current pen with given diameter. Note the linecap setting must first
be set to 1 for this function to work.
void ps_polygon (xarray, yarray, npoints, rgb, outline)
double xarray[], yarray[];
long npoints;
int rgb[3], outline;
Creates a colored polygon from the positions in the x-y arrays. Polygon will automatically be
closed by the PostScript driver. If outline == 0, no outline is drawn. If outline == 1, the
outline is drawn using current penwidth.
void ps_rect (x1, y1, x2, y2, rgb, outline)
double x1, y1, x2, y2;
int rgb[3], outline;
Plots a colored rectangle. (x1,y1) and (x2,y2) are any two corners on a diagonal. If outline
== 1, the outline will be drawn using current pen-width and -pattern.
void ps_rotaterect (x, y, angle, xsize, ysize, rgb, outline)
double x, y, angle, xsize, ysize;
int rgb[3], outline;
Plots a colored rectangle rotated angle degrees from baseline. (x,y) is the center and
(xsize,ysize) are the dimensions. If outline == 1, the outline will be drawn using current
pen-width and -pattern.
void ps_rotatetrans (x, y, angle)
double x, y, angle;
Rotates the coordinate system by angle degrees, then translates origin to (x,y).
void ps_segment (x0, y0, x1, y1)
double x0, y0, x1, y1;
Draws a line segment between the two points using current pen attributes.
void ps_setdash (pattern, offset)
char *pattern;
int offset;
Changes the current dashpattern. The character string pattern is set to the desired pattern.
E.g., "4 2" and offset = 1 will plot like:
x ---- ---- ----
etc, where x is starting point (The x is not plotted). That is, the line is made up of a
repeating pattern of a 4 units long line and a 2 unit long gap, starting 1 unit after the x.
To reset to solid line, specify pattern = NULL ("") and offset = 0. Units are in dpi units.
void ps_setfill (rgb, outline)
int rgb[3], outline;
Sets the current fill color and whether or not outline is needed for symbols.
void ps_setfont (fontnr)
int fontnr;
Changes the current font number to fontnr. The fonts available are: 0 = Helvetica, 1 = H.
Bold, 2 = H. Oblique, 3 = H. Bold-Oblique, 4 = Times, 5 = T. Bold, 6 = T. Italic, 7 = T. Bold
Italic, 8 = Courier, 9 = C. Bold, 10 = C Oblique, 11 = C Bold Oblique, 12 = Symbol, 13 =
AvantGarde-Book, 14 = A.-BookOblique, 15 = A.-Demi, 16 = A.-DemiOblique, 17 = Bookman-Demi, 18
= B.-DemiItalic, 19 = B.-Light, 20 = B.-LightItalic, 21 = Helvetica-Narrow, 22 = H-N-Bold, 23 =
H-N-Oblique, 24 = H-N-BoldOblique, 25 = NewCenturySchlbk-Roman, 26 = N.-Italic, 27 = N.-Bold,
28 = N.-BoldItalic, 29 = Palatino-Roman, 30 = P.-Italic, 31 = P.-Bold, 32 = P.-BoldItalic, 33 =
ZapfChancery-MediumItalic, 34 = ZapfDingbats, 35 = Ryumin-Light-EUC-H, 36 = Ryumin-Light-EUC-V,
37 = GothicBBB-Medium-EUC-H, and 38 = GothicBBB-Medium-EUC-V. If fontnr is outside this range,
it is set to 0.
void ps_setformat (n_decimals)
int n_decimals;
Sets number of decimals to be used when writing color or gray values. The default setting of 3
gives 1000 choices per red, green, and blue value, which is more than the 255 choices offered
by most 24-bit platforms. Choosing a lower value will make the output file smaller at the
expense of less color resolution. Still, a value of 2 gives 100 x 100 x 100 = 1 million
colors, more than most eyes can distinguish. For a setting of 1, you will have 10 nuances per
primary color and a total of 1000 unique combinations.
void ps_setline (linewidth)
int linewidth;
Changes the current linewidth in DPI units. 0 gives thinnest line, but the use of 0 is
implementation-dependent (Works fine on most laserwriters).
void ps_setlinecap (cap)
int cap;
Changes the current linecap. 0 gives butt cap [Default], 1 gives round, and 2 gives square.
void ps_setlinejoin (join)
int join;
Changes the current linejoin. 0 gives mitered [Default], 1 gives round, and 2 gives bevel
joins.
void ps_setmiterlimit (limit)
int limit;
Changes the current miter limit. 0 gives default miter, other values are the cutoff-, acute-
angle when mitering takes place.
void ps_setpaint (rgb)
int rgb[3];
Changes the current RGB setting for pens and text.
void ps_square (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a square and fills it with the specified color. If outline == 1, the outline will be
drawn using current pen-width and -pattern. The symbol will fit inside a circle of given
diameter.
void ps_star (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a star and fills it with the specified color. If outline == 1, the outline will be drawn
using current pen-width and -pattern. The symbol will fit inside a circle of given diameter.
void ps_text (x, y, pointsize, text, angle, justify, form)
double x, y, pointsize, angle;
char *text;
int justify, form;
The text is plotted starting at (x,y), and will make an angle with the horizontal. The point
(x,y) maps onto different points of the textstring by giving various values for justify. It is
used as follows:
9------------10----------- 11
| |
5 6 7
| |
1------------ 2------------ 3
The box represents the textstring. E.g., to plot a textstring with its center of gravity at
(x,y), you must use justify == 6. If justify is negative, then all leading and trailing blanks
are stripped before plotting. Certain character sequences (flags) have special meaning to
ps_text. @~ toggles between current font and the Mathematical Symbols font. @%no% sets font to
no; @%% resets to starting font. @- turns subscript on/off, @+ turns superscript on/off, @#
turns small caps on/off, and @\ will make a composite character of the following two character.
@;r/g/b; changes the font color (@;; resets it), @:size: changes the font size (@:: resets it),
and @_ toggles underline on/off. Give fontsize in points (72 points = 1 inch). Normally, the
text is typed using solid characters. To draw outline characters, set form == 1. If pointsize
is negative it means that the current point has already been set before ps_text was called and
that (x,y) should be ignored.
void ps_textbox (x, y, pointsize, text, angle, justify, outline, dx, dy, rgb)
double x, y, angle, pointsize, dx, dy;
char *text;
int justify, outline, rgb[3];
This function is used in conjugation with ps_text when a box surrounding the text string is
desired. Taking most of the arguments of ps_text, the user must also specify the color of the
resulting rectangle, and whether its outline should be drawn. More room between text and
rectangle can be obtained by setting dx and dy accordingly.
void ps_transrotate (x, y, angle)
double x, y, angle;
Translates the origin to (x,y), then rotates the coordinate system by angle degrees.
void ps_triangle (xcenter, ycenter, diameter, rgb, outline)
double xcenter, ycenter, diameter;
int rgb[3], outline;
Plots a triangle and paints it with the specified RGB combination. If outline == 1, the
outline will be drawn using current pen-width and -pattern. The symbol will fit inside a
circle of given diameter.
void ps_vector (xtail, ytail, xtip, ytip, tailwidth, headlength, headwidth, headshape, rgb,
outline)
double xtail, ytail, xtip, ytip, tailwidth, headlength, headwidth, headshape;
int rgb[3], outline;
Draws a vector of size and appearance as specified by the various parameters. headshape can
take on values from 0-1 and specifies how far the intersection point between the base of a
straight vector head and the vector line is moved toward the tip. 0 gives a triangular head,
1.0 gives an arrow shaped head. If outline == 1, the outline will be drawn using current
penwidth. Add 8 to outline for a double-headed vector.
void ps_words (x, y, text, n_words, line_space, par_width, par_just, font, font_size, angle, rgb,
justify, draw_box, x_off, y_off, x_gap, y_gap, boxpen_width, boxpen_texture, boxpen_offset,
boxpen_rgb, vecpen_width, vecpen_texture, vecpen_offset, vecpen_rgb, boxfill_rgb)
double x, y, line_space, par_width, angle, x_off, y_off, x_gap, y_gap;
long n_words;
int font, font_size, justify, draw_box, boxpen_width, boxpen_offset;
int boxpen_rgb[3], vecpen_width, vecpen_offset, vecpen_rgb[3], boxfill_rgb[3];
char **text, *boxpen_texture, *vecpen_texture;
Typesets paragraphs of text. text is an array of the words to typeset, using the given line-
spacing and paragraph width. The whole text block is positioned at x, y which is the anchor
point on the box as indicated by justify (see ps_text). The whole block is then shifted by
x_off, y_off. Inside the box, text is justified left, centered, right, or justified as governed
by par_just (lcrj). draw_box contains 4 bit flags pertaining to the surrounding outline box.
If on, the first (lowest) bit draws the box outline. The second bit fills the box interior.
The third bit makes the outline box have rounded corners (unless x_gap, y_gap, which specifies
the padding between the text and the box, are zero), while the forth bit draws a line from the
original x, y point to the shifted position. The escape sequences described for ps_text
applies as well.
AUTHOR
Paul Wessel, School of Ocean and Earth Science and Technology, 1680 East-West Road, Honolulu, Hawaii
96822, (808) 956-4778, Internet address: pwessel@hawaii.edu.
BUGS
Caveat Emptor: The author is not responsible for any disasters, suicide attempts, or ulcers caused by
correct or incorrect use of pslib. If you find bugs, please report them to the author by electronic
mail. Be sure to provide enough detail so that I can recreate the problem.
REFERENCES
Adobe Systems Inc., 1990, PostScript language reference manual, 2nd edition, Addison-Wesley, (ISBN
0-201-18127-4).