FastNoise plugin

rrraptor · December 2019

Added tileable texture geneation

I need to test it more, cuz it is a bit hardcoded.

SinisterSoft · December 2019

So the left/right and top/bottom match up with each other?

rrraptor · December 2019

SinisterSoft said:
So the left/right and top/bottom match up with each other?

Exactly

SinisterSoft · December 2019

Nice, also very useful.

SinisterSoft · December 2019

It might be good if you can pick a table of colours for it to use when generating the image.

rrraptor · December 2019

@SinisterSoft yeah, I want this too, but Im having some problems with C and lua tables api

rrraptor · December 2019

I made lua version of colored texture generation.

Example from image:

-- genTex(width, height, filtering, options)
-- options (table): texture parameters. Includes standart options like wrap, transparentColor etc.
-- 	noise (table): noise parameters
-- 		xoff (number): offset noise on x axis (optional)
-- 		yoff (number): offset noise on y axis (optional)
-- 		zoff (number): offset noise on z axis (optional)		
-- 		min (number): noise minimum value (optional, default: -1)
-- 		max (number): noise maximum value (optional, default: 1)
-- 		colors (table): noise color map
-- 			h (number): color height (from 0 to 1)
-- 			color (table): color in r g b a format (by default - white color)
 
local colors = {
	{h = 0.3, color = {52,99,195,255}},
	{h = 0.4, color = {54,102,198,255}},
	{h = 0.45, color = {209,208,128,255}},
	{h = 0.55, color = {88,151,24,255}},
	{h = 0.6, color = {63,106,20,255}},
	{h = 0.7, color = {92,68,61,255}},
	{h = 0.9, color = {75,60,55,255}},
	{h = 1, color = {255,255,255,255}},
}
 
n:setFrequency(0.03)
n:setFractalOctaves(5)
n:setFractalLacunarity(2.5)
n:setInterp(Noise.HERMITE)
n:setFractalGain(0.6)
n:setNoiseType(Noise.SIMPLEX_FRACTAL)
 
local tex = genTex(128, 128, false, {wrap=Texture.REPEAT, noise = {xoff = 0, yoff = 0, zoff = 0, min = -1, max = 1, colors = colors}})
local btm = Bitmap.new(tex)
btm:setPosition(10, 10)
btm:setScale(4)
stage:addChild(btm)
 
n:setSeed(6546)
n:setFrequency(0.02)
n:setFractalOctaves(3)
 
tex = genTex(128, 128, false, {wrap=Texture.REPEAT, noise = {xoff = 0, yoff = 0, zoff = 0, min = -1, max = 1, colors = colors}})
btm = Bitmap.new()
btm:setPosition(128*4 + 20, 10)
btm:setScale(4)
stage:addChild(btm)

The question is: is this parameters mess is ok?)

MoKaLux · December 2019

imho it needs to mature. In my short experience using gideros I found that some classes I had written some weeks ago needed some slight adjustments to make it more flexible, like in your case, some functions parameters needed to be added/removed.
So maybe use it for a couple more days (week) and see what you can mature.
This was my 2 cents.
Anyway your plugin looks AWESOME Can't wait to play with it.

rrraptor · December 2019

MoKaLux said:
imho it needs to mature. In my short experience using gideros I found that some classes I had written some weeks ago needed some slight adjustments to make it more flexible, like in your case, some functions parameters needed to be added/removed.
So maybe use it for a couple more days (week) and see what you can mature.
This was my 2 cents.

Any suggestions?)

MoKaLux said:
Anyway your plugin looks AWESOME Can't wait to play with it.

Well, you already can

I've attached plugin (works only on windows). Put into "Plugins" folder and you are ready to go)

Usage:

require "FastNoise"
noise = Noise.new()
print(noise:noise4D(1,2,3,4))

No need to add plugin in project library window!

Colored texture example:

application:setBackgroundColor(0x323232)
 
function byteColor(r,g,b,a)
	r=r or 255
	g=g or 255
	b=b or 255
	a=a or 255
	return string.format("%s%s%s%s", string.char(r), string.char(g), string.char(b), string.char(a))
end
 
function map(v, minC, maxC, minD, maxD)
	local newV = (v - minC) / (maxC - minC) * (maxD - minD) + minD
	return newV 
end
 
require "FastNoise"
 
local n = Noise.new()
 
function gen(w, h, filtering, options)
	local data = ""
	local t = options.noise or {}
	t.min = t.min or -1
	t.max = t.max or 1
	t.xoff = t.xoff or 0
	t.zoff = t.zoff or 0
	t.zoff = t.zoff or 0
 
	local colors = t.colors or {}
	for y = 1, h do 
		for x = 1, w do 
			local c = byteColor()
 
			local v = n:noise(x + t.xoff, y + t.yoff, t.zoff)
			local maped = map(v, t.min, t.max, 0, 1)
 
			for _,tc in ipairs(colors) do 
				if (maped <= tc.h) then 
					c = byteColor(unpack(tc.color))
					break
				end
			end
 
			data = data .. c
		end
	end
	return Texture.new(data,w,h,filtering,options)
end
local colors = {
	{h = 0.3, color = {52,99,195,255}},
	{h = 0.4, color = {54,102,198,255}},
	{h = 0.45, color = {209,208,128,255}},
	{h = 0.55, color = {88,151,24,255}},
	{h = 0.6, color = {63,106,20,255}},
	{h = 0.7, color = {92,68,61,255}},
	{h = 0.9, color = {75,60,55,255}},
	{h = 1, color = {255,255,255,255}},
}
 
n:setFrequency(0.03)
n:setFractalOctaves(5)
n:setFractalLacunarity(2.5)
n:setInterp(Noise.HERMITE)
n:setFractalType(Noise.FBM)
n:setFractalGain(0.6)
n:setNoiseType(Noise.SIMPLEX_FRACTAL)
 
local btm = Bitmap.new(gen(128, 128, false, {wrap=Texture.REPEAT, noise = {xoff = 0, yoff = 0, zoff = 0, min = -1, max = 1, colors = colors}}))
btm:setPosition(10, 10)
btm:setScale(4)
stage:addChild(btm)
 
--n:setSeed(6546)
n:setFrequency(0.02)
n:setFractalOctaves(3)
 
btm = Bitmap.new(gen(128, 128, false, {wrap=Texture.REPEAT, noise = {xoff = 0, yoff = 0, zoff = 0, min = -1, max = 1, colors = colors}}))
btm:setPosition(128*4 + 20, 10)
btm:setScale(4)
stage:addChild(btm)

MoKaLux · December 2019

rrraptor said:
Any suggestions?)

Sorry @rrraptor more experienced people may give you valuable suggestions. I need to use your plugin for quite a bit, then I could provide some feedback? Thank you for sharing

.

rrraptor · December 2019

Updated first post. I'll finish editing it later.

MoKaLux · December 2019

@rrraptor sorry to bother. I wanted to refer back to this thread for when I need to do the same (a gideros plugin) but now the first post with all your initial questions is gone and I won't know how to start. That's too bad

antix · December 2019

@rrraptor very nice man! Pity 1d noise isn't working

Just a question... if exporting directly to APK, will the right stuff be included?

sorry, haven;t tested as I've just been finishing my API Reference reader.

rrraptor · December 2019

antix said:
@rrraptor very nice man! Pity 1d noise isn't working

Well, you can use Noise:noise(x) or Noise:noise2D(x, 0), should work

Better to use "noise2D(x, y)" because it uses actaul 2D functions, where "noise([x, y, z])" uses 3D functions but all parameters are optional and by default = 0.

antix said:
Just a question... if exporting directly to APK, will the right stuff be included?

No, its not comiled for android. I'll try to compile someday ))) @hgy29 said, he will do it, so you just need to wait

antix said:
sorry, haven;t tested as I've just been finishing my API Reference reader.

Np, I did by myself.

MoKaLux said:
@rrraptor sorry to bother. I wanted to refer back to this thread for when I need to do the same (a gideros plugin) but now the first post with all your initial questions is gone and I won't know how to start. That's too bad

I'll try to write step by step guide.
Actualy, there is one already: http://forum.giderosmobile.com/discussion/1025/step-by-step-how-to-write-a-c-plugin-and-deploy-it-to-the-desktop-windows-player
This method still works (I mean VisualStudio), but its impossible to create a plugin that will have class defenition, becouse of that. All you need is QT. You can get it there -> https://wiki.giderosmobile.com/index.php/Compiling_Gideros_Source#1.1_Install_QT
Thats it. Now go to "All pugins" and try to open QT project (*.pro files), and compile it (CTRL+B)

hgy29 · December 2019

@rraptor, is your plugin finished ? If so send me the sources and I’ll add it to gideros

rrraptor · December 2019

hgy29 said:
@rraptor, is your plugin finished ? If so send me the sources and I’ll add it to gideros

No

The texture generation should be improved (texture options parameters (wrap, transperentColor etc...) and coloring). I think it will take some time, but if you want to release new version, texture generation can be removed for now. Also, 1D noise should be removed.
Sources are there -> https://github.com/MultiPain/Gideros_FastNoise_binding

SinisterSoft · December 2019

Leave them in, just say it's in beta.

hgy29 · December 2019

Added: https://github.com/gideros/gideros/commit/461ed0ef790ce4e203a55c6b47c27a3fc16e914f

rrraptor · December 2019

@hgy29 can you help a bit?)

I stacked with parsing lua table in C++

I want to have this format for colors:

colors = {	
	{h = 0.30, color = {52,99,194,255}},
	{h = 0.40, color = {55,102,199,255}},
	...
}

I have no problem of parsing "h" value, but have no idea how to parse "color" xDD

// im parsing a table which contains another table, called "colors"
lua_getfield(L, 6, "colors"); // stack: table, ...
lua_pushnil(L); // stack: nil, table
while (lua_next(L, -2)) // get key, value pair
{
        lua_getfield(L, -1, "h"); // stack: key, value, table, ...
        double hh = luaL_checknumber(L, -1); // get height value
        lua_pop(L, 2); // stack: key, table, ... 
}
lua_pop(L, 1);

I can change format to:

{
	{h = 0.30, r = 52, g = 99, b = 194, a = 255},
	{h = 0.40, r = 55, g = 102, b = 199, a = 255},
}

But it is very long

hgy29 · December 2019

use lua_rawgeti to fetch each color channel in your array in stead of going through lua_next

rrraptor · December 2019

@hgy29 hmm, like that?

        lua_getfield(L, 6, "colors");
        for (int i = 0; i < 8; i++)
        {
            lua_rawgeti(L, -1, i+1);
            lua_getfield(L, -1, "h");
            double hh = luaL_checknumber(L, -1);
            lua_pop(L, 1);
 
            lua_getfield(L, -1, "color");
            for (int j = 0; j < 3; j++)
            {
                lua_rawgeti(L, -1, j+1);
                double colorValue = luaL_checknumber(L, -1);
                lua_pop(L, 1);
            }
 
            lua_pop(L, 2);
        }

Now I have hardcoded array length

lua_objlen will help I guess...

hgy29 · December 2019

yes, that should be fine.
BTW I had to make some changes to your code to make it compile for all platforms: adding Math.h include at the top, checking if M_PI is defined, and changing some 'delete' into 'delete[]'

rrraptor · December 2019

hgy29 said:
yes, that should be fine.
BTW I had to make some changes to your code to make it compile for all platforms: adding Math.h include at the top, checking if M_PI is defined, and changing some 'delete' into 'delete[]'

Ok, I'll change my code then

SinisterSoft · December 2019

It would be good if any randomness could be optionally fixed - I mean so you could specify an optional seed. This would make it good for generating data based on a level number (so everyone sees the same data).

Also, a z direction might be useful (with optional wrapping) so you can create animated data that loops. (by playing through each z frame of data).

rrraptor · December 2019

@SinisterSoft it is already done

But the problem is that, we have to create new texture every time. We cant generate data and feed it to texture.

SinisterSoft · December 2019

Ahh, sorry I didn't see anything to set the seed here:

-- genTex(width, height, filtering, options)
-- options (table): texture parameters. Includes standart options like wrap, transparentColor etc.
-- noise (table): noise parameters
-- xoff (number): offset noise on x axis (optional)
-- yoff (number): offset noise on y axis (optional)
-- zoff (number): offset noise on z axis (optional)
-- min (number): noise minimum value (optional, default: -1)
-- max (number): noise maximum value (optional, default: 1)
-- colors (table): noise color map
-- h (number): color height (from 0 to 1)
-- color (table): color in r g b a format (by default - white color)

How do you set the seed? Also, don't forget the os random function work differently between each os. What are you using?

SinisterSoft · December 2019

Yes, you would have to generate multiple textures.

rrraptor · December 2019

@SinisterSoft I didnot develop this library

I took it and created a bridge between lua and c++
To set seed from lua you simply do

require "FastNoise"
local n = Noise.new()
n:setSeed(32231)
n:noise(x,y,z)

Set seed looks like this:

void FastNoise::SetSeed(int seed)
{
	m_seed = seed;
 
	std::mt19937_64 gen(seed);
 
	for (int i = 0; i < 256; i++)
		m_perm[i] = i;
 
	for (int j = 0; j < 256; j++)
	{
        int rng = (int)(gen() % (256 - j));
		int k = rng + j;
		int l = m_perm[j];
		m_perm[j] = m_perm[j + 256] = m_perm[k];
		m_perm[k] = l;
		m_perm12[j] = m_perm12[j + 256] = m_perm[j] % 12;
	}
}

My guess is that he shifts permutation table.

rrraptor · December 2019

~~Finaly, Its done.~~
EDIT: actualy...I forgot to fix tileable texture generation xD
EDIT2: probably fixed now

Added texture options support to "generateTexture" and "generateTileableTexture"
and color table support.

@hgy29 I updated files

https://github.com/MultiPain/Gideros_FastNoise_binding/

rrraptor · December 2019

Top left: Simplex fractal
Bottom left: perlin fractal
Right: tileable texture

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