ptoy

Play web version

Native	Web

Screenshots from older version

Clone

git clone https://github.com/pkarnakov/ptoy.git

Requirements

• Linux or Mac OS X
• C++14 compiler
• CMake
• emscripten (optional to build WebAssembly)
• SDL2
• glew

Build

Build with CMake

make

Build with debug info and assertions

make debug

Run

./build/ptoy

or ./build_debug/ptoy for the debug build.

Control

Keyboard

• r: switch mouse to Repulsion mode
• a: switch mouse to Attraction mode
• p: switch mouse to Pick mode
• f: switch mouse to Freeze mode
• o: switch mouse to Portal mode
• b: switch mouse to Bonds mode
• n: switch mouse to No action mode
• s, m, l: restart with a small (10x10), medium (25x25) or large (45x45) grid of particles
• 1, 2: restart with the default scene or with a box filled half-way
• d: drop a block of 10x10 particles from above
• down, up: point gravity further down or further up, also turning it on
• t: switch the position update between second and first order
• g: toggle gravity
• i: remove last pair of portals
• space: toggle pause
• q: quit after pressing 3 times

Mouse

Click actions depend on the mode selected by keyboard, all mouse buttons are equivalent.

Mode	Key	Click action
Repulsion (default)	r	repulsive force
Attraction	a	attractive force
Portal	o	draw portals (blue, then orange)
Pick	p	pick the closest particle
Freeze	f	freeze/unfreeze particle
Bonds	b	draw bonds between particles
No action	n	nothing

Documentation

• docs/MODEL.md: the forces, the constants, the contact dashpot and the time integrator