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C Library Functions  - drawstr (3)

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NAME

drawstr(3f) - [M_pixel:TEXT] Draw the text string at the current position (LICENSE:PD)

CONTENTS

Synopsis
Description
Examples
Author
License

SYNOPSIS

definition:

   subroutine drawstr(string)
   character(len=*),intent(in) :: string

DESCRIPTION

Draw a text string at the current position. Uses current line color and thickness and text centering mode.

EXAMPLES

Sample program:

      program demo_drawstr
      use M_pixel
      use :: M_pixel__writegif, only : writegif
      implicit none
      call prefsize(400,400)
      call vinit()
      call ortho2(-1.0,1.0,-1.0,1.0)
      ! by default the drawing surface is
      ! a square ranging from -1 to 1 in both
      ! the X and Y axis
      write(*,*)D_BLACK, D_GREEN, D_RED

      call color(D_BLACK)    ! set current color to black
      call clear()           ! clear to current color

      ! SET COMMON TEXT ATTRIBUTES
      call color(D_GREEN)    ! we want to draw in green
      call circle(0.0,0.0,1.0)
      call font(’futura.m’)  ! set font
      call textsize(0.1,0.1) ! font size

      ! DRAW A STRING
      call move2(-1.0, 0.0)
      call drawstr(’Hello’)  ! draw string at current position
      ! note that current position is now at end of this string

      ! CHANGE SOME TEXT ATTRIBUTES AGAIN
      call linewidth(20)     ! set line width
      call color(D_RED)      ! change color
      call textang(45.0)     ! change text angle

      call drawstr(’ World!’)! draw string at current position
      !-! render pixel array to a file
      call writegif(’drawstr.3m_pixel.gif’,P_pixel,P_colormap)
      !-! display graphic assuming display(1) is available
      call execute_command_line(’display drawstr.3m_pixel.gif’)

      call vexit()           !  wrap up and exit graphics mode

      end program demo_drawstr

Results:

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

drawstr (3)

February 23, 2025

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