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Corroder
Grandmaster Cheater Supreme
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 Posted: Sun Sep 13, 2020 6:57 am Post subject: Gradient Text |
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Below is functions to generate gradient text in Lua terminal, adopted from Egor S scripts.
When try in CE Lua, function generate_gradient and print_with_color give result:
| Code: | | @x021G@x020r@x020a@x055d@x055i@x054e@x090n@x089t@x125 @x125T@x160e@x160x@x196t |
How to use function generate_gradient on CE Form?
I tried:
| Code: | local abs, min, max, floor = math.abs, math.min, math.max, math.floor
local levels = {[0] = 0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff}
local function index_0_5(value) -- value = color component 0..255
return floor(max((value - 35) / 40, value / 58))
end
local function nearest_16_231(r, g, b) -- r, g, b = 0..255
-- returns color_index_from_16_to_231, appr_r, appr_g, appr_b
r, g, b = index_0_5(r), index_0_5(g), index_0_5(b)
return 16 + 36 * r + 6 * g + b, levels[r], levels[g], levels[b]
end
local function nearest_232_255(r, g, b) -- r, g, b = 0..255
local gray = (3 * r + 10 * g + b) / 14
-- this is a rational approximation for well-known formula
-- gray = 0.2126 * r + 0.7152 * g + 0.0722 * b
local index = min(23, max(0, floor((gray - 3) / 10)))
gray = 8 + index * 10
return 232 + index, gray, gray, gray
end
local function color_distance(r1, g1, b1, r2, g2, b2)
return abs(r1 - r2) + abs(g1 - g2) + abs(b1 - b2)
end
local function nearest_term256_color_index(r, g, b) -- r, g, b = 0..255
local idx1, r1, g1, b1 = nearest_16_231(r, g, b)
local idx2, r2, g2, b2 = nearest_232_255(r, g, b)
local dist1 = color_distance(r, g, b, r1, g1, b1)
local dist2 = color_distance(r, g, b, r2, g2, b2)
return dist1 < dist2 and idx1 or idx2
end
local unpack, tonumber = table.unpack or unpack, tonumber
local function convert_color_to_table(rrggbb)
if type(rrggbb) == "string" then
local r, g, b = rrggbb:match"(%x%x)(%x%x)(%x%x)"
return {tonumber(r, 16), tonumber(g, 16), tonumber(b, 16)}
else
return rrggbb
end
end
local function round(x)
return floor(x + 0.5)
end
local function generate_gradient(text, first_color, last_color)
local r, g, b = unpack(convert_color_to_table(first_color))
local dr, dg, db = unpack(convert_color_to_table(last_color))
local char_pattern = "[^\128-\191][\128-\191]*"
local n = max(1, select(2, text:gsub(char_pattern, "")) - 1)
dr, dg, db = (dr - r)/n, (dg - g)/n, (db - b)/n
local result = ""
for c in text:gmatch(char_pattern) do
result = result..("@x%03d"):format(nearest_term256_color_index(
round(r), round(g), round(b)))..c
r, g, b = r + dr, g + dg, b + db
end
return result
end
---- run on Lua terminal
local function print_with_colors(str)
print(
str:gsub("@x(%d%d%d)",
function(color_idx)
return "\27[38;5;"..color_idx.."m"
end)
.."\27[0m"
)
end
--------------------------------------------------------------------------------
f=createForm()
pb=createPaintBox(f)
pb.Canvas.Font.Size=20
pb.Align='alClient'
local rect={}
rect.Left=0
rect.Top=0
rect.Right=pb.Width
rect.Bottom=pb.Height
local str = "Gradient Text"
local blue, red = {0, 0, 255}, "#FF0000"
local str = generate_gradient(str, blue, red) -- gradient from blue to red\
print(str)
--print_with_colors(str)
pb.Canvas.clear()
pb.Canvas.textRect(rect,0,0,str) |
The result is nothing text draws on the paint box.
Or is any other CE Lua method to generating gradient text?
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.lua
Expert Cheater
 Reputation: 1
Joined: 13 Sep 2018
Posts: 189
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| Posted: Mon Sep 14, 2020 12:45 am Post subject: |
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Revised as：Maybe the result is not what you want：（Refer to the post of dark byte, I don't know where it is） | Code: | function setTextRGB(s)
local i=1
local r=''
for p,cnr in utf8.codes(s) do
local c=utf8.char(cnr)
local red=math.random(0,255) local green=math.random(0,127) local blue=math.random(0,55)
c=string.char(27)..'[38;2;'..red..';'..green..';'..blue..'m'..c r=r..c
end
return r
end
f=createForm()
pb=createPaintBox(f)
pb.Canvas.Font.Size=20
pb.Align='alClient'
local rect={}
rect.Left=0
rect.Top=0
rect.Right=pb.Width
rect.Bottom=pb.Height
local str = "Gradient Text"
pb.Repaint()
pb.Canvas.textRect(rect,0,0,setTextRGB(str)) |
| Description: |
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| Filesize: |
40.28 KB |
| Viewed: |
2164 Time(s) |
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Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1667
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| Posted: Mon Sep 14, 2020 3:06 am Post subject: |
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@Lua, thanks for the info. Yes, I knew and I have DB script to generate Rainbow Text as your example. But what I want to do is like attached image.
EDIT:
From the script on the first topic above, here is how to use:
| Code: | local function print_with_colors(str)
print(
str:gsub("@x(%d%d%d)",
function(color_idx)
return "\27[38;5;"..color_idx.."m"
end)
.."\27[0m"
)
end
--- generate from the script on the first topic
c = '@x021G@x020r@x020a@x055d@x055i@x054e@x090n@x089t@x125 @x125T@x160e@x160x@x196t'
str = print_with_colors(c)
print(str) -- the result is below
str = '[38;5;021mG[38;5;020mr[38;5;020ma[38;5;055md[38;5;055mi[38;5;054me[38;5;090mn[38;5;089mt[38;5;125m [38;5;125mT[38;5;160me[38;5;160mx[38;5;196mt[0m '
str = string.char(27)..str
f=createForm()
pb=createPaintBox(f)
pb.Canvas.Font.Size=20
pb.Align='alClient'
local rect={}
rect.Left=0
rect.Top=0
rect.Right=pb.Width
rect.Bottom=pb.Height
pb.Repaint()
pb.Canvas.textRect(rect,0,0,str) |
| Description: |
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| Filesize: |
14.65 KB |
| Viewed: |
2147 Time(s) |
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| Description: |
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| Filesize: |
183.68 KB |
| Viewed: |
2154 Time(s) |
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Last edited by Corroder on Mon Sep 14, 2020 3:49 am; edited 1 time in total |
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.lua
Expert Cheater
Reputation: 1
Joined: 13 Sep 2018
Posts: 189
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| Posted: Mon Sep 14, 2020 3:16 am Post subject: |
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| Corroder wrote: | | @Lua, thanks for the info. Yes, I knew and I have DB script to generate Rainbow Text as your example. But what I want to do is like attached image. |
It's really enjoyable to present your text like this. I like it very much. I hope you can complete the code as soon as possible。
You can refer to this post below：
https://forum.cheatengine.org/viewtopic.php?t=578415&postdays=0&postorder=asc&start=0
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Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1667
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| Posted: Mon Sep 14, 2020 3:53 am Post subject: |
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@Lua, see the edit post on my last post before. I think just need to make little adjustment to get perfect result. I hope DB or someone expert will helps.
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.lua
Expert Cheater
Reputation: 1
Joined: 13 Sep 2018
Posts: 189
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| Posted: Mon Sep 14, 2020 4:31 am Post subject: |
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| Corroder wrote: | | @Lua, see the edit post on my last post before. I think just need to make little adjustment to get perfect result. I hope DB or someone expert will helps. |
Maybe you need to use this:Change each pixel
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Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1667
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| Posted: Mon Sep 14, 2020 4:38 am Post subject: |
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Maybe, but I think use get and set pixels giving extreme slow process.
I'm just playing around CE Lua graphics and learn how it works, especially with canvas with some tricks. Example, to get out lines text or glowing text, like this script below:
| Code: | if f then f.destroy() end
f = createForm()
f.setSize(400,170)
f.Position = 'poScreenCenter'
pb=createPaintBox(f)
pb.Left,pb.Top,pb.Width,pb.Heigth = 0,30,400,170
f.OnPaint = function()
Canvas = f.Canvas
Canvas.GradientFill(0,0,f.Width, f.Height, 10263708, 197379, 1)
end
pb.OnPaint = function()
local rect, mytext
local rect={}
rect.Left=0
rect.Top=0
rect.Right=pb.Width
rect.Bottom=pb.Height
Canvas = pb.Canvas
mytext = 'Hello the world, Who am I ?'
Canvas.Font.Size = 20
Canvas.Font.Height = 42
Canvas.Font.Color = 16777215
test1 = [[
Canvas.TextRect(rect, 20 - 3, pb.Height - 80 - 0, mytext)
Canvas.TextRect(rect, 20 + 3, pb.Height - 80 + 0, mytext)
Canvas.TextRect(rect, 20 + 0, pb.Height - 80 - 3, mytext)
Canvas.TextRect(rect, 20 - 0, pb.Height - 80 + 3, mytext)
Canvas.TextRect(rect, 20 - 3, pb.Height - 80 - 3, mytext)
Canvas.TextRect(rect, 20 + 3, pb.Height - 80 + 3, mytext)
Canvas.TextRect(rect, 20 + 3, pb.Height - 80 - 3, mytext)
Canvas.TextRect(rect, 20 - 3, pb.Height - 80 + 3, mytext)
]]
Canvas.TextRect(rect, 10 - 1, pb.Height - 80 - 1, mytext)
Canvas.TextRect(rect, 10 + 1, pb.Height - 80 + 1, mytext)
Canvas.TextRect(rect, 10 + 1, pb.Height - 80 - 1, mytext)
Canvas.TextRect(rect, 10 - 1, pb.Height - 80 + 1, mytext)
Canvas.Font.Color = 1189470
Canvas.TextRect(rect, 10, pb.Height - 80, mytext)
end
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| Description: |
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| Filesize: |
18.66 KB |
| Viewed: |
2136 Time(s) |
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.lua
Expert Cheater
Reputation: 1
Joined: 13 Sep 2018
Posts: 189
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| Posted: Mon Sep 14, 2020 7:04 am Post subject: |
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I don't know the color gradient algorithm, so 5 doesn't look good. The next step is how to speed up the rendering process and solve the color gradient algorithm。
| Code: | if f==nil then f=createForm() end
Lab=createLabel(f)
Lab.Font.Size=40
Lab.Font.Style='fsBold'
Lab.Font.Name='Trebuchet MS'
Lab.Font.Color=0x555555
Lab.Caption='0123456789'
PixelX={} PixelY={}
i=0xf55555
function imgc(Thread2)
sleep(1)
for x=0,Lab.Canvas.Width-1 do i=i+1
for y=0,Lab.Canvas.Height-1 do
if Lab.Canvas.getPixel(x,y)==0x555555 then
Lab.Canvas.setPixel(x-2,y-2,i)
--print(i)
--table.insert(PixelX,x)
--table.insert(PixelY,y)
end
end
end
end
Thread2=createThread(imgc) |
I have an idea: as long as I save the X and Y retrieved for the first time to the array, I will directly operate on the array next time, although the first time is special (I also used threads, otherwise it will be stuck)
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2111 Time(s) |
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Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1667
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| Posted: Mon Sep 14, 2020 9:15 am Post subject: |
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Good!. I think just make different 1 or 2 point between label color value and i value.
| Code: | Lab.Font.Color= 10921638
Lab.Caption='0123456789'
i = 10921636
function imgc(Thread2)
sleep(1)
for x=0,Lab.Canvas.Width-1 do
i = i + 1
for y=0,Lab.Canvas.Height-1 do
if Lab.Canvas.getPixel(x,y)== 10921638 then
Lab.Canvas.setPixel(x-1,y-1,i)
end
end
end
end
Thread2=createThread(imgc) |
Also, because you use createThread() then try to change the label caption to something else. I also afraid using createThread will consume CPU if not set a condition to kill/terminate the thread.
Anyhow, that is nice try. Good luck.
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Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1667
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| Posted: Tue Sep 15, 2020 6:04 am Post subject: |
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I am done with this. Just using ANSI 256 color escape code pattern.
And I am no need to worry to slow or consume my CPU.
| Code: | -- ref ANSI 256 color = https://robotmoon.com/256-colors/
str = '\27[38;5;34mG\27[38;5;35mr\27[38;5;36ma\27[38;5;37md\27[38;5;38mi\27[38;5;39me\27[38;5;50mn\27[38;5;51mt\27'
if f then f.Destroy() end
f=createForm()
pb=createPaintBox(f)
pb.Canvas.Font.Size=52
pb.Align='alClient'
local rect={}
rect.Left=0
rect.Top=0
rect.Right=pb.Width
rect.Bottom=pb.Height
pb.Repaint()
pb.Canvas.Font.Style='fsBold'
pb.Canvas.Font.Name='Trebuchet MS'
pb.Canvas.Font.Color = 0
pb.Canvas.textRect(rect,16,54,'Gradient')
pb.Canvas.textRect(rect,12,50,str) |
| Description: |
| My ANSI 256 Color Gradient Text |
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| Filesize: |
20.08 KB |
| Viewed: |
2040 Time(s) |
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.lua
Expert Cheater
Reputation: 1
Joined: 13 Sep 2018
Posts: 189
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| Posted: Tue Sep 15, 2020 8:26 am Post subject: |
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| I also think it's better to adopt the method of dark byte, only to understand the gradient algorithm, and then to customize the color
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Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1667
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| Posted: Tue Sep 15, 2020 5:46 pm Post subject: |
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Yes DB method is use generating ANSI escape code pattern from RGB values. The ANSI color usually use on print on terminal also have 16, 32, 64, 256 color maps.
The thing need to do is to substitute the escape string to CE Lua format, like using string.char() and of course need to linear algorithm for gradient color.
Example: (I am use xterm 256 colors ANSI escape code pattern)
| Code: | | \27[38;5;34mG\27[38 ; 5;35mr\27[38;5;36ma |
\27 mean the ESC character or = string.char(27)
[38; is the foreground color
5 is the attribute
34m is background color
G is the letter G
Complete:
| Code: | -- attributes
reset = 0,
clear = 0,
bright = 1,
dim = 2,
underscore = 4,
blink = 5,
reverse = 7,
hidden = 8,
-- foreground
black = 30,
red = 31,
green = 32,
yellow = 33,
blue = 34,
magenta = 35,
cyan = 36,
white = 37,
-- background
onblack = 40,
onred = 41,
ongreen = 42,
onyellow = 43,
onblue = 44,
onmagenta = 45,
oncyan = 46,
onwhite = 47,
|
The script on my first topic is trying to generated ANSI Esc Code to Lua format plus linear gradient algorithm.
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