# Questions tagged [simplex-noise]

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### 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 ...
134 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?
943 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, ...
905 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 ...
1k 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 ...
1k 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 ...
886 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 ...
38 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 ...
206 views

### 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 ...
439 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 ...
494 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,...
125 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- ...
217 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: ...
689 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 ...
1k views

### 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 ...
342 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 ...
386 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 ...
614 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 ...
191 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 ...
321 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 ...
43 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 ...