Tinyraytracer

Example output:

(Background image credit: P. Horálek / ESO)

This repository is based on the tinyraytracer project https://github.com/ssloy/tinyraytracer/ (see also the homework branch)

The code is changed so the background image rotates. Stitching the images to get a GIF needs to be done with an external tool.

Reproduction steps

• Grab a (preferably high resolution) 360° panorama image. I used a large JPEG that can be found here.

• Place it in the project directory and name it 360.jpeg.

• By default the resolution of the output images is 720x480. You can change this by editing width and height variables in the render function in tinyraytracer.cpp.

• The code will generate 200 images by default, which means a full rotation takes around 6 secs, assuming a framerate of 30fps. If you want to change it, change the variable nImages in tinyraytracer.cpp.

• Create a folder named output/ in the project directory.

• Run the code after compiling it (see compilation steps). Now output/ should contain the resulting images.

• Generate a gif from your jpeg files: you can either use an online service like this one, or use Photoshop following the steps here.

Compilation steps

git clone --recurse-submodules https://github.com/elrhaff/tinyraytracer
cd tinyraytracer
git submodule update --init
mkdir build
cd build
cmake ..  
make