https://github.com/rreusser/glsl-hypot

The 2D hypot function for GLSL
https://github.com/rreusser/glsl-hypot

Last synced: 7 days ago
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The 2D hypot function for GLSL

• Host: GitHub
• URL: https://github.com/rreusser/glsl-hypot
• Owner: rreusser
• Created: 2016-09-20T04:08:25.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-09-20T18:57:27.000Z (over 8 years ago)
• Last Synced: 2024-10-26T12:13:44.223Z (2 months ago)
• Language: GLSL
• Size: 1.95 KB
• Stars: 9
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# glsl-hypot

> The 2D hypot function for GLSL

[![glsl-hypot](https://nodei.co/npm/glsl-hypot.png?mini=true)](https://nodei.co/npm/glsl-hypot)

## Introduction

`sqrt(x * x + y * y)` is easy, but it's subject to overflow and underflow in an environment with already limited precision. This function returns the length of a vec2 while avoiding overflow/underflow. Most of the time though, you're almost certainly fine without this.

## Usage

``` glsl

#pragma glslify: hypot = require(glsl-hypot)

attribute vec3 position;

void main () {

  gl_FragColor = vec4(vec3(hypot(position.xy)), 1.0);

}

```

## License

© 2016 Ricky Reusser. MIT License.