C Library Functions - color_name2rgb (3)
NAME
COLOR_NAME2RGB(3f) - [M_pixel:COLOR] returns the RGB values in the range 0 to 100 for a given known color name. (LICENSE:PD)
CONTENTS
Synopsis
Description
Examples
Author
License
SYNOPSIS
definition:
subroutine color_name2rgb(name,r,g,b,echoname)character(len=20),intent(in) :: name real,intent(out) :: r,g,b character(len=20),intent(out) :: echoname
DESCRIPTION
COLOR_NAME2RGB() returns the RGB values in the range 0 to 100 for a given known color name. Most X11 Windows color names are supported. If the name is not found, ECHONAME is set to "Unknown".
EXAMPLES
A sample program:
program demo_color_name2rgb use M_pixel, only : hue, color_name2rgb implicit none ! ! list colors known to colorname2rgb(3f) & corresponding RGB values ! character(len=20) :: name character(len=20) :: echoname real :: red,green,blue integer :: i TRYALL: do i=1,10000 ! weird little thing where the color names have aliases ! that are numeric strings write(name,’(i0)’)i ! get the RGB values and English name of the color call color_name2rgb(name,red,green,blue,echoname) ! the last color name is "Unknown" so the loop should exit if(echoname.eq.’Unknown’)exit TRYALL ! display the English name and RGB values for the name write(*,*)echoname,int([red,green,blue]) enddo TRYALL !write(*,*)’Number of colors found is ’,i-1 end program demo_color_name2rgb
AUTHOR
John S. Urban
LICENSE
Public Domain
| Nemo Release 3.1 | color_name2rgb (3) | February 23, 2025 |
