https://github.com/konrad-kubacki/px_particles

Basic particles on the screen using OpenGL and C++.
https://github.com/konrad-kubacki/px_particles

cpp opengl particles simd

Last synced: over 1 year ago
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Basic particles on the screen using OpenGL and C++.

• Host: GitHub
• URL: https://github.com/konrad-kubacki/px_particles
• Owner: konrad-kubacki
• Created: 2020-10-24T19:09:51.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-10-27T09:51:47.000Z (over 5 years ago)
• Last Synced: 2025-03-01T21:20:29.800Z (over 1 year ago)
• Topics: cpp, opengl, particles, simd
• Language: C++
• Homepage:
• Size: 4.65 MB
• Stars: 6
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

          
# OpenGL + SIMD + C++

## v1.0

It's a test project. Main purpose is to play with SIMD (Single Instruction Multiple Data). I'm using [vectorclass](https://github.com/vectorclass) library for SIMD, [SFML](https://github.com/sfml/sfml) for Window creation and input handling. 

# **Usage**

Use *left mouse button* to attract particles towards it. Hold *left shift* to attract them continuously. Use *R* key to reset the particles.

# **Command line arguments**

`-arg_name=value`, for example `-win_w=1280 -win_h=720`.

| argument  |  description | default value |

| :-  |  :- | :- |

| win_w  | window width, has to be divisible by 4 | 800 |

| win_h  | window height | 600 |

| fps  | FPS limit | 0 (no limit) |

| alignment  | alignment of particles memory, has to be power of 2 | 32 |

| pulse_demo | are we running the pulsating demo mode? Interaction is disabled in pulse mode. | 0 (non-zero means yes) |

| pulse_min | minimum pulse time, in milliseconds | 100 |

| pulse_max | maximum pulse time, in milliseconds | 900 |

| use_lines | use GL_LINE_LOOP instead of GL_POINTS, gives a cool effect | 0 (non-zero means yes) |

# Compiling

Just open the .sln using Visual Studio 2019 and compile. Binaries will in the `_binaries` folder.

# [Lines demo](https://youtu.be/ypdq5brqjEE)

# [Pulse demo](https://youtu.be/V5rohV-xLDM)

# [Clicking demo](https://youtu.be/A0FwfGXOCbs)

# Screens

Just note that the coolset thing about this program is that particles move really fast. It's hard to catch the fun stuff on still images. 

## Lines mode:

![](_img/ss_lines.png)

## Pulsating particles mode:

![](_img/ss_0.png)

## Following screenshots were captured in a 1000x1000 window, 1 milion particles, clicking mode.

![](_img/ss_1.png)

![](_img/ss_2.png)

![](_img/ss_3.png)

![](_img/ss_4.png)