home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
gondwana.ecr.mu.oz.au/pub/
/
Graphics.tar
/
Graphics
/
VOGLE.ZIP
/
VOGLE
/
EXAMPLES
/
FCIRCTXT.FOR
< prev
next >
Wrap
Text File
|
2000-02-11
|
3KB
|
167 lines
c
c display all the hershey fonts and demonstrate textang
c
program fcirctxt
character*40 str1, str2, str3, str4, fonts(22)
character*100 buf
character*1 c
integer BLACK, YELLOW, GREEN
integer i, getkey
parameter (BLACK = 0, YELLOW = 3, GREEN = 2)
data fonts/ 'astrology', 'cursive', 'futura.l',
+ 'futura.m', 'gothic.eng', 'gothic.ger',
+ 'gothic.ita', 'greek', 'japanese', 'markers',
+ 'math.low', 'math.upp', 'meteorology', 'music',
+ 'cyrillic', 'script', 'symbolic', 'times.g',
+ 'times.ib', 'times.i', 'times.r', 'times.rb' /
data str1/ 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' /
data str2/ 'abcdefghijklmnopqrstuvwxyz' /
data str3/ '1234567890+-=!@#$%^&*(){}[]' /
data str4/ '<>,./?~`\|_BONK,blark' /
print*,'Enter output device:'
read(*,'(a)')buf
call vinit(buf)
call vsetflush(.false.)
call color(BLACK)
call clear
c
c define the world space
c
call ortho2(-14.0, 14.0, -14.0, 14.0)
do 10 i = 1, 22
c
c textang is used to specify the orientation of text. As
c we want the title to come out straight we make sure it is
c zero each time we go through this loop.
c
call textang(0.0)
c
c do the title
c
call color(YELLOW)
call font('futura.m')
write(buf, '(''This is Hershey font '',a)') fonts(i)
call boxtext(-11.0, 12.0, 20.0, 1.0, buf)
c
c draw a box around the title
c
call rect(-11.0, 12.0, 9.0, 13.0)
call color(GREEN)
c
c grab a font from the table
c
call font(fonts(i))
c
c show the outer ring
c
call textsize(1.5, 1.5)
call ShowCircularText(11.0, str1)
c
c show the second ring
c
call textsize(1.3, 1.3)
call ShowCircularText(8.5, str2)
c
c show the third ring
c
call textsize(1.1, 1.1)
call ShowCircularText(7.0, str3)
c
c show the inside ring
c
call textsize(0.9, 0.9)
call ShowCircularText(5.0, str4)
c = char(getkey())
if (c .eq. 'q') then
call vexit
stop
end if
call color(BLACK)
call clear
10 continue
call vexit
end
c
c nchars
c
c return the real length of a string padded with blanks
c
integer function nchars(str)
character *(*) str
do 10 i = len(str), 1, -1
if (str(i:i) .ne. ' ') then
nchars = i
return
end if
10 continue
nchars = 0
return
end
c
c ShowCircularText
c
c show a ring of text
c
subroutine ShowCircularText(r, str)
real r
character*(*) str
real i, inc, x, y, a, pi
integer j
character*1 c
parameter (pi = 3.1415926535)
j = 1
inc = 360.0 / nchars(str)
do 10 i = 0, 360.0, inc
c
c calculate the next drawing position
c
c = str(j:j)
x = r * cos(i * pi / 180.0)
y = r * sin(i * pi / 180.0)
call move2(x, y)
c
c calculate angle for next character
c
a = 90.0 + i
c
c set the orientation of the next character
c
call textang(a)
c
c draw the character
c
call drawchar(c)
j = j + 1
10 continue
end