condzi/px_particles

Basic particles on the screen using OpenGL and C++.

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 library for SIMD, 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

Pulse demo

Clicking demo

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:

Pulsating particles mode:

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