Questions tagged [simplex-noise]

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biome blending using multiple biome (altitude, humidity) points

I have a noise function for altitude: float getAltitude(x, z) and noise function for humidity: float getHumidity(x, z) and at each cell of my terrain I calculate a (altitude, humidity) point, and then ...
BogdanB's user avatar
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1 answer
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How to scale down noise intensity?

I'm currently making a planet and for that, I added noise, to create terrain on the surface. The method I'm using is creating simplex noise (that ends up looking like the image below) And I write ...
Chillzy's user avatar
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How do I find the gradient of a noise value which has been re-evaluated on a curve

I have a function Evaluate(), which is used to remap a noise value based on a curve/spline to make the noise more interesting. There are 3 inputs: the noise value ...
Shiv-iwnl's user avatar
1 vote
1 answer
158 views

How do I smooth out the edges at the end of the threshold on noise?

I'm making a terrain generator for a game and I need it to smooth down to a float, I've tried a bunch of different things with lerping but I can't figure it out. I need to stop this from happening by ...
Indiepixel's user avatar
-1 votes
1 answer
419 views

Generating noise heightmap in C# Console

I want to generate a heightmap for a 2D world (top-down, not a side-scroller), I've followed a guide that worked fine in Unity but in my current project which is a C# console application it doesn't ...
Taceo's user avatar
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1 vote
1 answer
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How do you generate seamless Perlin noise?

I've done a research and tried implementing for months, but I've gotten nowhere trying to make seamless/tileable Perlin noise. Here is my current Perlin noise file without seamless implementation. In ...
Lono's user avatar
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20 votes
2 answers
7k views

Continents with Simplex noise

How do I turn Simplex noise like: into something like: or The noise has too many white spots and varies too much to represent things like continents. Where it's water, water, water, and then land ...
Janis Taranda's user avatar
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1 answer
467 views

How to make one-axis tileable simplex noise?

I made a program that uses perlin noise to generate a height map. It worked very good. Later I changed it to use simplex noise. What I want to achieve now is that the left edge fits in the right ...
yente paternotte's user avatar
4 votes
1 answer
2k views

Zooming in on procedural generated 2D terrain? (LOD)

My question is what methods are there to "zoom in" on a procedurally generated map using Perlin Noise (or Simplex). If I have for example this generated and I wanted to "zoom" into that little red ...
RayShawnOfNapalm's user avatar
1 vote
1 answer
726 views

Procedural generation of heightmap for non rectangular surface

I'm working on procedural generation of terrain for a continent, meaning I need a wide range of hills, mountains and valleys generated around the continent. For mountains I've adopted Amit's algorithm ...
user1617735's user avatar
1 vote
0 answers
971 views

Using Perlin/Simplex noise in a 2d tile game for terrain generation

I've been doing a bunch of research regarding procedural 2d terrain generation and have come to the conclusion that the use of perlin/simplex noise seems to be the way to go for most things. I've ...
Jesse's user avatar
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2 answers
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How should I use this 1D perlin noise function?

I'm trying to create a terraria like terrain with SDL2 and C++. For generating the terrain I'm trying to use the 1D noise function from here: https://github.com/SRombauts/SimplexNoise It's pretty ...
IHazza's user avatar
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2 votes
1 answer
2k views

Are there any methods for generating rivers on-demand with Perlin/Simplex noise?

I'm aware of many methods for procedurally generating rivers, but they require an entire heightmap beforehand in order to work. For instance, they may require to find a high position on the map and ...
rcpinto's user avatar
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1 answer
843 views

How do I create the terrain mentioned in GPU Gems 3

So, i want to create this style of terrain: Nvidia GPU Gems 3 - Chapter 1 However, as much as I scour the web trying to find ways to implement this inside Unity, I can't find it. My current ...
salarc's user avatar
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4 votes
1 answer
1k views

How do I perform interpolation between noise values sampled at a lower resolution?

I'm doing some experimentation with terrain generating using a method similar to that described in this blog post by Markus Persson, where I use 3D simplex noise as a "density" value. Like him, ...
Ethan Bierlein's user avatar
1 vote
0 answers
515 views

How do I create tileable 3D Perlin/Simplex noise?

I have a library which provides functions for 1/2/3/4-D simplex noise. With that I successfuly created a tileable 2D cloud texture (see How do you generate tileable Perlin noise?). Now I want to ...
Pikkostack's user avatar
1 vote
1 answer
606 views

Heightmap using Simplex noise with octaves: help with parameters and interpretation

I've found a few pieces of code around, where Java code for Simplex noise (based on this widely quoted paper) was coupled with octaves to get a heightmap. However those classes/snippets are NOT in the ...
Fabio's user avatar
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1 vote
1 answer
975 views

Deterministically shuffling of array

I couldn't find an answer to this so I'm asking here, I've made a voxel engine and it's working reasonably well, except for a small detail: I have yet to figure out how to seed my simplex noise engine,...
Cocaine Johnsson's user avatar
2 votes
2 answers
1k views

2D Simplex Smooth Cave Generation

So I'm creating a system of caves below my random terrain generation, and I'm using 2D Simplex Noise to do so and I have a pretty good grasp on generating the random caves. However, the cutoff from ...
TheUnrealMegashark's user avatar
1 vote
1 answer
143 views

1D Simplex Noise Returns Same Generation

I've been using 1D Simplex Noise to create a random world surface, and it keeps generating with the same looking surface terrain, with some minor variations. Here is my sample code- ...
TheUnrealMegashark's user avatar
6 votes
1 answer
2k views

Stepping through 3D noise to generate a cubemap for a sphere

This is somewhat related to a previous question I asked How to create a seamless cubemap noise texture? I have managed to successfully step through a 3D noise function to create a cubemap texture ...
NeomerArcana's user avatar
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0 answers
53 views

Placing tiles on 2D Simplex noise [duplicate]

I have been experimenting with 2D Simplex noise for a mini-project and while I cannot say I understand the maths behind it, I begin to feel quite confident with how I can manipulate it to get ...
roqvist's user avatar
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1 vote
1 answer
232 views

Why is my Simplex Noise appearing in four columns?

I'm trying to make a Texture out of Simplex noise, but it keeps appearing like this regardless of how big or small scale is: ...
Joe the Person's user avatar
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1 answer
339 views

Java: Irrelative Simplex Noise [closed]

I am stuck in another problem with Noise(I´ve never did this before). Now Terrain is generating and its quite well but its Irrelative to each other. Here is a screenshot As you might notice Each ...
Zaphyk's user avatar
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0 answers
128 views

Wrapping 3D noise functions like simplex and perlin in c# [duplicate]

I'm experimenting with loop-able worlds that have a height-map for terrain data. While I can easily create loop-able .BMP textures for this in Photoshop and just load the terrain from them, but that ...
That Homeless Guy's user avatar
4 votes
1 answer
146 views

Does a patch of simplex noise sum up to zero?

Just for interest, when sampling simplex noise in any given dimension, would the sum of all samples run towards zero?
danijar's user avatar
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