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ray-tracing

C++ graphics library using Ray Tracing

Based on Phong's and Lambertian's shading

Main features

  • Objects have coordinates that can be described as functions of time

  • The camera's shutter and aperture can be modified

  • Virtual classes allow simple creation of new objects for the scene

Optimizations

  • Objects are inscribed in a sphere. If the ray does not touch the sphere, the expensive intersection computation is not performed

  • If an object's coordinates are not a function of time, they are optimized, making scenes with just a few moving objects much faster

  • More rays are casted on pixels where rays casted so far have an higher variation

  • Multithreading is used to improve performance

Results

This is an high resolution image (500x500) created in ~5hrs on a regular laptop:

image1

This is a lower resolution image (250x250) with an object really close to the camera:

image2

This is the heatmap of the number of rays for each pixel, showing where more rays were casted:

image3