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 Entire forum ➜ MUSHclient ➜ Miniwindows ➜ vertical text
vertical text

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Posted by Nick Gammon   Australia  (23,133 posts)  Bio   Forum Administrator
Date Reply #15 on Thu 13 Feb 2020 12:35 AM (UTC)
Message
What you could do for the speed issue is cache the rotated text. So, when you want to draw a weapon, see if you already have a miniwindow (not shown) which contains the weapon name rotated. If not, you could make one. From then on, just copy from this rotated window onto the main window.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Zimmy   (31 posts)  Bio
Date Reply #16 on Thu 13 Feb 2020 02:20 AM (UTC)
Message
Nick Gammon said:

What you could do for the speed issue is cache the rotated text. So, when you want to draw a weapon, see if you already have a miniwindow (not shown) which contains the weapon name rotated. If not, you could make one. From then on, just copy from this rotated window onto the main window.

Would there be a difference in performance between creating the cache from miniwindows containing rotated text vs images that are copies of a miniwindow containing the rotated text. Do I need a separate secret miniwindow for each new weapon or can I just have a new image for each weapon?
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Posted by Nick Gammon   Australia  (23,133 posts)  Bio   Forum Administrator
Date Reply #17 on Thu 13 Feb 2020 06:05 AM (UTC)
Message
I don't really understand the question. What is option A and what is option B?
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Zimmy   (31 posts)  Bio
Date Reply #18 on Thu 13 Feb 2020 06:20 AM (UTC)

Amended on Thu 13 Feb 2020 06:28 AM (UTC) by Zimmy

Message
Nick Gammon said:

I don't really understand the question. What is option A and what is option B?


Option A: (what I thought you were suggesting) separate miniwindows for each rotated string.

Option B: using a single miniwindow to generate and copy images of each rotated string (clearing the contents after each time)

Anyways, here's what I have so far. I haven't coded in the cache mechanism yet. The only problem I'm having is with transparency.
[EDIT]Figured out the transparency. Edited the code.


--------------------------------------------------------------------------------
--   VERTICAL FONT
--------------------------------------------------------------------------------
function load_vertical_font(font, size, colour)
    rotated = {}
    WindowCreate(win.."upright", 0, 0, 0, 0, miniwin.pos_center_all, 0, ColourNameToRGB("black"))
    WindowCreate(win.."rotated", 0, 0, 0, 0, miniwin.pos_center_all, 0, ColourNameToRGB("black"))
    WindowFont(win.."upright", "vf", font, size, false, false, false, false)
    local alphabet = "-!?.'abcdefghijklmnopqrstucwxyz "
    alphabet:gsub(".", function(l)
        local w, h = WindowTextWidth(win.."upright", "vf", l), WindowFontInfo(win.."upright", "vf", 1)
        WindowResize(win.."upright", w, h, ColourNameToRGB("purple"))
        WindowRectOp(win.."upright", 2, 0, 0, w, h, ColourNameToRGB("purple"))
        WindowResize(win.."rotated", h, w, ColourNameToRGB("purple"))
        WindowText(win.."upright", "vf", l, 0, 0, w, h, colour, false)
        for x = 1, w do
            for y = 1, h do
                local pixel = WindowGetPixel(win.."upright", x, h - y)
                WindowSetPixel(win.."rotated", y, x, pixel)
                WindowImageFromWindow(win.."main", l, win.."rotated")
                rotated[l] = {x = h, y = w}
            end
        end
    end)
end

function print_vertical_text(text, x1, y1)
    text = string.lower(text)
    text:gsub("[-!?.'a-z ]", function(l)
        WindowDrawImage(win.."main", l, x1, y1, 0, 0, miniwin.image_transparent_copy)
        y1 = y1 + rotated[l].y
    end)
    WindowShow(win.."main", true)
end
--------------------------------------------------------------------------------
--   START EXECUTION HERE
--------------------------------------------------------------------------------
win = "win_"
WIN_X, WIN_Y = 300, 300
WindowCreate(win.."main", 0, 0, WIN_X, WIN_Y, miniwin.pos_center_all, 0, ColourNameToRGB("black"))
load_vertical_font("Dina", 14, ColourNameToRGB("white"))
print_vertical_text("Hello World!", 0, 0)
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Posted by Nick Gammon   Australia  (23,133 posts)  Bio   Forum Administrator
Date Reply #19 on Fri 14 Feb 2020 09:04 PM (UTC)
Message
Your technique seems perfectly acceptable.

Time taken to draw: 0.5 ms.


start = utils.timer ()
print_vertical_text("Hello World!", 0, 0)
print (string.format ("Time taken = %0.4f", utils.timer () - start))
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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