Collection of visual simulators

Here I am going to drop simulators with visual component. Or, in case of very slow evolution process, with output video in popular formats.

Current status: in development.

Dependencies for C++ programs: OpenCV, OpenMP, OpenGL, glm, glwf, glad, boost

Installation

• OpenCV: sudo apt-get install libopencv-dev
• OpenGL: sudo apt-get install libglu1-mesa-dev freeglut3-dev mesa-common-dev
• OpenMP: sudo apt-get install libomp-dev
• boost: sudo apt-get install libboost-all-dev
• glm: sudo apt-get install libglm-dev libglm-doc
• glwf: sudo apt-get install libglfw3-dev libglfw3-doc
• glad: todo: add script to load glad files to /user/include

2d Heat solver

This simulator propagate heat convection as a function of time. By touching canvas, user can add energy to the system in place where was drawed by user. Uses OpenCV for rendering.

Usage

cd heat2d
make

To list available parameters:

./heat_demo -h
Allowed arguments:
  -h [ --help ]                         print this message.
  -y [ --height ] arg (=600)            set height of the window.
  -x [ --width ] arg (=800)             set width of the window
  -a [ --alpha ] arg (=0.05)            alpha parameter of heat equation.
  -i [ --iter ] arg (=20)               number of iterations per render.
  -s [ --size ] arg (=15)               radius of the brush when drawing.
  -t [ --temp ] arg (=1.3)              temperature of the brush.
  -d [ --debug ]                        debug flag to print extra states' info

For example: ./heat_demo -t1 -a1e-4 -s20

3d Heat solver

This is similar to 2d simulator but this one support free camera. Uses OpenGL GLSL with OpenCV to render.

Usage

cd heat3d
make

To list available parameters:

./heat3d_demo -h
Allowed arguments:
  -h [ --help ]                         print this message.
  --dt arg (=0.0001)                    timestep per iteration.
  --dx arg (=0.01)                      space step in Ox, for stability dt <
                                        dr^2.
  --dy arg (=0.01)                      space step in Oy, for stability dt <
                                        dr^2.
  --dz arg (=0.01)                      space step in Oz, for stability dt <
                                        dr^2.
  -a [ --alpha ] arg (=0.005)           thermal diffusivity of the system.
  -d [ --debug ]                        run with debug information.
  -i [ --iter ] arg (=10)               number of iterations per frame.
  --width arg (=800)                    width of the window in startup.
  --height arg (=600)                   height of the window in startup.
  --yaw arg (=-90)                      initial yaw value of the camera.
  --pitch arg (=0)                      initial pitch value of the camera.
  --speed arg (=1.5)                    speed that camera moves in the front
                                        direction.
  --mouse arg (=0.10000000000000001)    mouse sesitivity while zooming.
  --fov arg (=90)                       fov of the camera.
  --video arg (=heat3d_video.avi)       name of recorded video, video is
                                        recorded if debug flag specified.
  --fps arg (=120)                      fps that video is captured.
  --fstate arg (=state.bin)             name of binary file with
                                        (1/dx+1)x(1/dy+1)x(1/dz+1) grid of
                                        float32 initial state.