Ângelo Morgado - github
Henrique Jesus - github
Manuel Magalhães - github
This projects aims to simulate the movement of a group of bodies in space. In order to do that an highly costumizable particle system was conceived. This project was made using C++ and OpenGL.
In order to run the program in Windows you need to install the g++ compiler. This project was made using the MinGW compiler. The preferred way to run the program is to use the visual studio code IDE. The instalation tutorial can be found in this link.
In order to run the program in Linux you need to install the g++ compiler. To install the dependencies run the following commands:
- sudo apt-get install libglfw3
- sudo apt-get install assimp-utils
To run the program in Windows you need to open the project in visual studio code and press the run button. The program will be compiled and run due to the tasks.json file. Alternatively you can also compile it in the command line. To run it simply open the the Main.exe file or any executables already compiled for windows.
To run the program in Linux you need to open the terminal in the project folder and use the makefile. To compile the program run the following command:
- make
To run the program run the following command:
- ./Main
To give more freedom to the user, the camera can be moved using the following keys:
W: Move forwardS: Move backwardA: Move leftD: Move rightSpace: Move up (In the direction of the up vector)C: Move down (In the direction of the up vector)Scroll Up: Zoom inScroll Down: Zoom outP: Check the vertices of the world
To properly visualize the simulation we created 6 scenarios. Each scenario tries to identify a different aspect of the n body simulation and its uses.
To change the scenario you need to change the value of the scenario variable in the Main.cpp file.
The scenarios are:
This scenario aims to simulate the real interaction between celestial bodies in space. To do that, each particle will interact with the other particles in the system. The interaction is based on the gravitational force. There are 3 types of particles: red(heavy), yellow(medium), white(light); this was done to check how mass will impact the simulation.
In order to improve the simulation input was included:
Right Arrow: Increase the mass of the particlesLeft Arrow: Decrease the mass of the particlesUp Arrow: Increase the force between the particlesDown Arrow: Decrease the force between the particles
This scenario aims to simulate the interaction between a black hole and a group of particles. The black hole is represented by a custom kirby object. The force between the particles and the black hole is based on the gravitational force. The particles have different masses.
Like the previous scenario, however there are two black holes in the system and they are moving. To improve the simulation, input was included:
Left Arrow: Only the first black hole will exert a force on the particlesRight Arrow: Only the second black hole will exert a force on the particlesUp Arrow: Default mode, both black holes will exert a force on the particlesDown Arrow: Increase the force between the particles and the black holes
This scenario aims to simulate the big bang. To do that, the particles are created in a random position and with a random velocity. The particles are created in a sphere with a radius of 100 units. The particles have different masses. They are then pulled into the center for 5 seconds, and then they are released using an explosion force.
This scenario aims to simulate the movement of a group of particles in a spiral. To make it more interesting, the color of the particles are also changing using the sin and cos functions; this gives the illusion that the colors never change.
This scenario tries to create point clouds using the particles. Firstly a file containing the positions and colors for each vertex is read. Then the particles are moved into the correct position. The available point clouds and their input are:
B: BoatR: RoseH: Sphere
