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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
include <gset.h>
include <gio.h>
# GRESET -- Initialize the internal state variables of GIO to their default
# values. Called upon startup and by GCANCEL and GCLEAR.
procedure greset (gp, flags)
pointer gp #I graphics descriptor
int flags #I flags indicating what to reset
int color, ch, i
real char_height, aspect
bool reset_wcs, reset_gio, reset_glabax
pointer sp, glbcolor, param, w, ap, ax, ax1, ax2, ip, op
bool streq()
real ggetr()
int envfind(), ctoi(), strncmp()
define next_ 91
errchk ggetr
begin
call smark (sp)
call salloc (glbcolor, SZ_LINE, TY_CHAR)
call salloc (param, SZ_FNAME, TY_CHAR)
# Initialize for a new frame; this is always done.
call gfrinit (gp)
reset_glabax = (and (flags, GR_RESETGLABAX) != 0)
reset_wcs = (and (flags, GR_RESETWCS) != 0)
reset_gio = (and (flags, GR_RESETGIO) != 0)
# Reset general GIO device and drawing parameters?
if (reset_gio) {
GP_CURSOR(gp) = 1
# All default sizes in NDC units are scaled to the height of a
# device character.
char_height = ggetr (gp, "ch")
if (char_height < EPSILON)
char_height = DEF_CHARHEIGHT
aspect = ggetr (gp, "ar")
if (aspect < EPSILON)
aspect = 1.0
GP_DEVASPECT(gp) = aspect
# Set default marker sizes.
do i = 1, 4
GP_SZMARKER(gp,i) = (char_height * i) / 4.0
# Set polyline attributes.
ap = GP_PLAP(gp)
PL_LTYPE(ap) = 1
PL_WIDTH(ap) = 1.0
PL_COLOR(ap) = 1
# Set polymarker attributes.
ap = GP_PMAP(gp)
PM_LTYPE(ap) = 1
PM_WIDTH(ap) = 1.0
PM_COLOR(ap) = 1
# Set fill area attributes.
ap = GP_FAAP(gp)
FA_STYLE(ap) = 1
FA_COLOR(ap) = 1
# Set default text attributes.
ap = GP_TXAP(gp)
TX_UP(ap) = 90
TX_SIZE(ap) = 1.0
TX_PATH(ap) = GT_RIGHT
TX_SPACING(ap) = 0.0
TX_HJUSTIFY(ap) = GT_LEFT
TX_VJUSTIFY(ap) = GT_DOWN
TX_FONT(ap) = GT_ROMAN
TX_QUALITY(ap) = GT_NORMAL
TX_COLOR(ap) = 1
}
# Reset GLABAX parameters?
if (reset_glabax) {
# Set general GLABAX parameters.
GP_DRAWTITLE(gp) = YES
GP_TITLESIZE(gp) = 1.0
GP_TITLECOLOR(gp) = 1
GP_TITLEJUST(gp) = GT_CENTER
GP_NTITLELINES(gp) = 0
GP_FRAMECOLOR(gp) = 0
GP_FRAMEDRAWN(gp) = 0
# Set GLABAX parameters for the X and Y axes.
do i = 1, 2 {
if (i == 1)
ax = GP_XAP(gp)
else
ax = GP_YAP(gp)
GL_DRAWAXES(ax) = 3
GL_SETAXISPOS(ax) = NO
GL_AXISPOS1(ax) = 0.0
GL_AXISPOS2(ax) = 0.0
GL_DRAWGRID(ax) = NO
GL_GRIDCOLOR(ax) = 1
GL_ROUND(ax) = NO
GL_LABELAXIS(ax) = YES
GL_AXISLABELSIZE(ax) = 1.0
GL_AXISLABELCOLOR(ax) = 1
GL_DRAWTICKS(ax) = YES
GL_LABELTICKS(ax) = YES
GL_NMAJOR(ax) = 6
GL_NMINOR(ax) = 4
GL_MAJORLENGTH(ax) = 0.6 * char_height
GL_MINORLENGTH(ax) = 0.3 * char_height
GL_MAJORWIDTH(ax) = 2.0
GL_MINORWIDTH(ax) = 2.0
GL_AXISWIDTH(ax) = 2.0
GL_AXISCOLOR(ax) = 1
GL_TICKLABELSIZE(ax) = 1.0
GL_TICKLABELCOLOR(ax) = 1
GL_TICKCOLOR(ax) = 1
GL_TICKFORMAT(ax) = EOS
}
# Correct the default tick length for the aspect ratio.
ax = GP_XAP(gp)
GL_MAJORLENGTH(ax) = GL_MAJORLENGTH(ax) / aspect
GL_MINORLENGTH(ax) = GL_MINORLENGTH(ax) / aspect
# Set user color defaults if specified. This is a simple string
# parameter of the form "pt=i,fr=i,ax=i,..." where I is the color
# index. The actual color corresponding to this index is defined
# externally, e.g. by the graphics server.
if (envfind ("glbcolor", Memc[glbcolor], SZ_LINE) > 0) {
ax1 = GP_XAP(gp)
ax2 = GP_YAP(gp)
for (ip=glbcolor; Memc[ip] != EOS; ) {
# Get color parameter code.
for (op=param; Memc[ip] != EOS &&
Memc[ip] != '=' && Memc[ip] != ':'; ip=ip+1) {
Memc[op] = Memc[ip]
op = op + 1
}
Memc[op] = EOS
ch = Memc[param+2]
# Get color index.
if (Memc[ip] == '=' || Memc[ip] == ':')
ip = ip + 1
if (ctoi (Memc, ip, color) <= 0)
goto next_
# Set parameter. The two character parameter name may
# have an "x" or "y" appended to set only one axis. For
# example, "pt=4,fr=3,ax=1,tk=1,al=5,tl=6". The color
# parameter code names are as follows:
#
# pt plot title
# fr viewport frame
# gr[xy] grid between tick marks
# ax[xy] axis
# al[xy] axis label
# tk[xy] tick
# tl[xy] tick label
#
# The color codes are simple integers corresponding to
# graphics device color codes, e.g. 0, 1, 2, and so on.
if (streq (Memc[param], "pt")) {
GP_TITLECOLOR(gp) = color
} else if (streq (Memc[param], "fr")) {
GP_FRAMECOLOR(gp) = color
} else if (strncmp (Memc[param], "gr", 2) == 0) {
if (ch == EOS || ch == 'x')
GL_GRIDCOLOR(ax1) = color
if (ch == EOS || ch == 'y')
GL_GRIDCOLOR(ax2) = color
} else if (strncmp (Memc[param], "ax", 2) == 0) {
if (ch == EOS || ch == 'x')
GL_AXISCOLOR(ax1) = color
if (ch == EOS || ch == 'y')
GL_AXISCOLOR(ax2) = color
} else if (strncmp (Memc[param], "al", 2) == 0) {
if (ch == EOS || ch == 'x')
GL_AXISLABELCOLOR(ax1) = color
if (ch == EOS || ch == 'y')
GL_AXISLABELCOLOR(ax2) = color
} else if (strncmp (Memc[param], "tk", 2) == 0) {
if (ch == EOS || ch == 'x')
GL_TICKCOLOR(ax1) = color
if (ch == EOS || ch == 'y')
GL_TICKCOLOR(ax2) = color
} else if (strncmp (Memc[param], "tl", 2) == 0) {
if (ch == EOS || ch == 'x')
GL_TICKLABELCOLOR(ax1) = color
if (ch == EOS || ch == 'y')
GL_TICKLABELCOLOR(ax2) = color
}
next_
while (Memc[ip] != EOS && Memc[ip] != ',')
ip = ip + 1
if (Memc[ip] == ',')
ip = ip + 1
}
}
}
# Reset the WCS?
if (reset_wcs) {
GP_WCS(gp) = 1
# Initialize the WCS to NDC coordinates.
do i = 0, MAX_WCS {
w = GP_WCSPTR(gp,i)
WCS_WX1(w) = 0.0
WCS_WX2(w) = 1.0
WCS_WY1(w) = 0.0
WCS_WY2(w) = 1.0
WCS_SX1(w) = 0.0
WCS_SX2(w) = 1.0
WCS_SY1(w) = 0.0
WCS_SY2(w) = 1.0
WCS_XTRAN(w) = LINEAR
WCS_YTRAN(w) = LINEAR
WCS_FLAGS(w) = WF_NEWFORMAT+WF_CLIP
}
}
call sfree (sp)
end
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