Provided by: libncarg-dev_6.4.0-9_amd64 
NAME
Scrolled_title_params - This document briefly describes all Scrolled_title internal
parameters.
DESCRIPTION
Parameter descriptions, in alphabetical order, of all Scrolled_title internal parameters
follow. Each description begins with a line giving the parameter name and its default
value.
´ALN´ - 0
Flag to control whether alignment frames with dots in the corners are produced in
non-test mode. ´ALN´ = 0 means "suppress them", ´ALN´ = 1 means "produce them", and
´ALN´ = 2 means "produce them and label the frames as ´alignment frames´".
´BGC´ - 0
An integer specifying the color index to be used for the background color. If
´BGC´ = 0, GKS is depended upon to fill the background; otherwise, STITLE does a
GFA call to fill it.
´BGF´ - -2
An integer specifying the type of background fade-in/fade-out.
The value "-1" implies that background fades are suppressed.
The value "-2" implies a fade from/to black by mapping RGB values to HSV values and
varying V.
A non-negative value of the form "ni x 1000 + no" implies a fade-in from the color
with color index "ni" and a fade-out to the color with color index "no"; for
example, the value "11012" implies fading in from color 11 and out to color 12.
Use "999" to suppress one of the fades; for example, the value "26999" implies
fading in from color 26, but no fade-out, while the value "999026" implies no fade-
in, but a fade-out to color 26. These fades are done using linear interpolation in
the RGB system.
´BGR´, ´BGG´, and ´BGB´ - Device default.
Real values, in the range 0. to 1., to be used for the red, green, and blue
components of the background color. When one of these values is set, it defines a
component of the color associated with the current value of the color index ´BGC´.
´FGC´ - 1
An integer specifying the color index to be used for the default foreground color.
All informative information on "test run" frames and all title lines for which no
other color index is specified will be in the color specified by this color index.
´FGF´ - -2
An integer specifying the type of foreground fade-in/fade-out.
The value "-1" implies that foreground fades are suppressed.
The value "-2" implies a fade from/to black by mapping RGB values to HSV values and
varying V.
A non-negative value of the form "ni x 1000 + no" implies a fade-in from the color
with color index "ni" and a fade-out to the color with color index "no"; for
example, the value "11012" implies fading in from color 11 and out to color 12.
Use "999" to suppress one of the fades; for example, the value "26999" implies
fading in from color 26, but no fade-out, while the value "999026" implies no fade-
in, but a fade-out to color 26. These fades are done using linear interpolation in
the RGB system.
Fades are done on all foreground colors known to STITLE because SLSETR has been
called to define their RGB components or because their color indices have appeared
on card images defined by the argument CRDS.
´FGR´,´FGG´, and ´FGB´ - Device default.
Real values, in the range 0. to 1., to be used for the red, green, and blue
components of a specified foreground color.
The index of the color being defined may be specified in parentheses following the
´FGR´, ´FGG´, or ´FGB´; for example, the statement "CALL SLSETR ('FGR(2)',.5)"
defines the red component of the color associated with color index 2 to be .5. If
no subscript appears, the color index defined by the current value of ´FGC´ is the
one whose definition is affected.
A color can also be defined by calling the GKS subroutine GSCR and specifying the
color index on one of the card images in the CRDS array. Note, however, that any
color which is to be used solely in a user-supplied version of the routine SLUBKG
and which is desired to be subject to fade-in/fade-out should be defined by means
of SLSETR calls.
Characters may be drawn in any of the foreground colors.
´FIN´ - 0.
Number of seconds during which to fade in titles. The background color and
foreground color are faded in independently. Each color is faded in in the manner
specified by the value of either ´BGF´ or ´FGF´, whichever is appropriate.
´FOU´ - 0.
Number of seconds during which to fade out titles. The background color and
foreground color are faded out independently. Each color is faded out in the
manner specified by the value of either ´BGF´ or ´FGF´, whichever is appropriate.
´GSZ´ - 40.
Value for interline spacing, defined in terms of a 1024x1024 grid. Used only by
FTITLE.
´ICO´ - 1
Centering option. Set to 0 to get left edges lined up at X-coordinate 64, and to 2
to get right edges lined up at X-coordinate 960. Set to 1 for centered text. Used
only by FTITLE.
´ICU´ - 5
Unit number for reading input. Used only by FTITLE.
´INC´ - 300
Vertical spacing between test frames.
´LOG´ - 4
FORTRAN logical unit number for opening WISS (Workstation-Independent Segment
Storage).
´LX1´ - 0
Integer, in the range 0 to 32767, specifying the X coordinate of the lower left
corner of the viewport. Use ´VPL´, instead.
´LX2´ - 32767
Integer, in the range 0 to 32767, specifying the X coordinate of the upper right
corner of the viewport. Use ´VPR´, instead.
´LY1´ - 0
Integer, in the range 0 to 32767, specifying the Y coordinate of the lower left
corner of the viewport. Use ´VPB´, instead.
´LY2´ - 32767
Integer, in the range 0 to 32767, specifying the Y coordinate of the upper right
corner of the viewport. Use ´VPT´, instead.
´MAP´ - 100
internal parameter ´MA´ is to be set; otherwise, the user will be assumed to have
set it. The default values of ´MAP´ and ´ORV´ are such as to create scrolled
titles in the normal way; other values may be used to create titles that scroll
upwards on the surface of the globe or that scroll off into space (a la Star Wars);
the appropriate transformations need to be embedded in a user-written version of
the Plotchar routine PCMPXY. (This is still rather new; eventually, there will be
an example showing how to do this.)
´NFS´ - 24.
The number of frames per second. The default, 24, is appropriate for film. For
video, use ´NFS´ = 30.
´NXE´ - 512
Analogous to the Scrolled_title argument IYND, to allow for limited scrolling in
the X direction. ´NXE´ must be within the current Scrolled_title window.
´NXS´ - 512
Analogous to the Scrolled_title argument IYST, to allow for limited scrolling in
the X direction. ´NXS´ must be within the current Scrolled_title window.
´ORV´ - 1.E12
If non-zero, the value to which Plotchar´s internal parameter ´OR´ is to be set;
otherwise, the user will be assumed to have set it. See the discussion of the
parameter ´MAP´, above.
´PSZ´ - 21.
Default character height on a 1024 by 1024 grid.
´SBK´ - 0
Suppresses fade in/out of the background color when a fade in/out time has been
specified. If ´SBK´=0, then the fade in/out will be honored; otherwise, the
background color will appear at full intensity during a fade in/out. This
parameter has been superseded by ´BGF´, which should be used instead. ´SBK´ = 0 is
equivalent to ´BGF´ = -2, while ´SBK´ = 1 is equivalent to ´BGF´ = -1.
´SFG´ - 0
Suppresses fade in/out of the foreground color when a fade in/out time has been
specified. If ´SFG´=0, then the fade in/out will be honored; otherwise, the
foreground color will appear at full intensity during a fade in/out. This
parameter has been superseded by ´FGF´, which should be used instead. ´SFG´ = 0 is
equivalent to ´FGF´ = -2, while ´SFG´ = 1 is equivalent to ´FGF´ = -1.
´TM1´ - 1.
Number of seconds worth of blank frames (at ´NFS´ frames/second) generated before
any title frames produced by a call to FTITLE. Used only by FTITLE.
´TM2´ - .5
Number of seconds worth of blank frames (at ´NFS´ frames/second), between sets of
title frames, and after the last set of title frames, produced by a call to FTITLE.
Used only by FTITLE.
´TM3´ - 0.
Number of additional seconds worth of blank frames (at ´NFS´ frames/second) after
the last title frame produced by a call to FTITLE. ´TM3´ may be negative to
suppress some of the frames specified by ´TM2´; the number of seconds of blank
frames after the last title frame will be the sum of ´TM2´ and ´TM3´. Used only by
FTITLE.
´VPB´ - 0.
A real, in the range from 0. to 1., specifying the Y coordinate of the bottom edge
of the STITLE viewport.
The STITLE viewport is used in two ways: 1) characters are clipped at its edges;
and 2) it defines the rectangle which is filled by STITLE when the value of 'BGC'
is non-zero.
Changing the values of ´VPL´, ´VPR´, ´VPB´, and ´VPT´ changes the values of ´LX1´,
´LX2´, ´LY1´, and ´LY2´ (and vice-versa); use of the names ´VPL´, ´VPR´, ´VPB´, and
´VPT´ is now preferred.
´VPL´ - 0.
A real, in the range from 0. to 1., specifying the X coordinate of the left edge of
the STITLE viewport.
´VPR´ - 0.
A real, in the range from 0. to 1., specifying the X coordinate of the right edge
of the STITLE viewport.
´VPT´ - 0.
A real, in the range from 0. to 1., specifying the Y coordinate of the top edge of
the STITLE viewport.
´WID´ - 9
Workstation identifier for WISS (Workstation-Independent Segment Storage); this is
used internally in the calls to Gflash.
SEE ALSO
Online: gflash, plotchar, slgeti, slgetr, slseti, slsetr, ncarg_cbind.
Hardcopy: NCAR Graphics Fundamentals, UNIX Version; User's Guide for NCAR GKS-0A Graphics
COPYRIGHT
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
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