OpenEuphoria

Mysterious green line

• Posted by simulat <simulat at INTERGATE.BC.CA> Aug 15, 1999
• 406 views

Hi
When I make my own palette, I get a green line at the top of my monitor.
This line doesn't appear if I accept the system palette. The line doesn't
get saved if the screen is saved to disk as a bitmap file.

This is a mystery for me- not a problem. Though it would be a problem if I
actually needed to make the green line go away.

Does anyone know what's going on?

Thanks

Martin


<<<<<START OF EUPHORIA CODE>>>>
-- When I try to make my own palette, I get a green line at the top of the
--  screen. Why is it there?



include misc.e
include graphics.e
include image.e
include get.e

function InitGraphics(atom grafmode)
atom gr
    gr=graphics_mode(grafmode)
    return video_config()
end function

constant degtorad=PI/180
--constant radtodeg=180/PI

global constant vidok=1
global constant vidmode=2
global constant vidwide=5
global constant vidhigh=6
global constant vidcolrs=7
global constant yes=1
global constant no=0

sequence videoconfig  -- Set up the screen graphic mode
videoconfig=InitGraphics(261)-- I'm using video mode 261

global constant numcolours=videoconfig[vidcolrs]-1
global constant sw=videoconfig[vidwide]
global constant sh=videoconfig[vidhigh]




function Radian(atom i) return degtorad*i end function

procedure wait()
        atom a
        a=wait_key()
end procedure

global procedure prinseq(sequence label, sequence string)
     printf(1, "%s", {label&" "})
    printf(1, "%s \n", {string})
end procedure



-- This is the palette making routine that makes the green line
global procedure browns1colourit(atom cn) -- Makes a palette of colours
atom red, green, blue, t1, t2
sequence colours

        colours={{0,0,0}}

        for colour=2 to cn do
   t1=colour/cn*180
   t2=colour/cn*89.09
  red=63*sin(Radian(t1-10))    green=63*cos(Radian(t1+30))
blue=tan(Radian(t2))
     colours=append(colours,{red, green, blue})
        end for
        all_palette(colours)
end procedure

atom sav

--with trace trace(1)


browns1colourit(256) -- This line calls the palette making routine
prinseq("","Do you see a green line at the top of the screen?")
prinseq("","Why is it there?")
prinseq("","It only occurs when I make up my own palette.")
prinseq("","Press any key twice to exit")

    sav=save_screen(0,"e:\\pictures\\new\\test.bmp")

wait()
--clear_screen()

<<<<END OF EUPHORIA CODE