C Library Functions - centertext (3)
NAME
centertext(3f) - [M_draw:TEXT] Turns centertext mode on or off for SOFTWARE fonts. (LICENSE:PD)
CONTENTS
Synopsis
Description
Options
Examples
SYNOPSIS
subroutine centertext(onoff)
logical,intent(in) :: onoff
DESCRIPTION
Turns centertext text on or off. .TRUE. is on. This centers strings and chars. This routine only affects software text.
OPTIONS
ONOFF set centering mode on or off
EXAMPLES
Sample program:
program demo_centertext use :: M_draw implicit none real :: x1, y1, r, ang, xx, yy integer :: i, j, ipaws !! set up drawing environment call prefsize(600,600) call vinit(’ ’) ! start graphics using device $M_DRAW_DEVICE call ortho2(-300.0,300.0,-300.0,300.0) call textsize(8.0,8.0) call linewidth(30) call color(D_BLACK) call clear()x1=-150 y1=-150 do j=1,4 select case(j) case(1); call xcentertext(); x1=-150; y1=-150; r=100 case(2); call ycentertext(); x1=+150; y1=-150; r= 30 case(3); call centertext(.true.); x1=-150; y1=+150; r=100 case(4); call centertext(.false.); x1=+150; y1=+150; r= 30 end select !! draw radial lines call color(D_RED) do i=1,80 call move2(x1,y1) call draw2(x1+150.0*cosd(i*12.0), y1+150.0*sind(i*12.0)) enddo
!! draw rotated text call color(D_GREEN) do i=1,30 ang=i*12.0 xx=x1+r*cosd(ang) yy=y1+r*sind(ang) call move2(xx,yy) call textang(ang) call color(D_WHITE) call drawstr(’This is angled text’) call color(D_RED) enddo enddo
ipaws=getkey()
call vexit()
end program demo_centertext
| Nemo Release 3.1 | centertext (3) | February 23, 2025 |
